Date: 2016-07-24T16:48:17+00:00

Actual source code: plog.c
petsc-3.7.3 2016-07-24
Report Typos and Errors

      2: /*
      3:       PETSc code to log object creation and destruction and PETSc events.

      5:       This provides the public API used by the rest of PETSc and by users.

      7:       These routines use a private API that is not used elsewhere in PETSc and is not
      8:       accessible to users. The private API is defined in logimpl.h and the utils directory.

     10: */
     11: #include <petsc/private/logimpl.h>        /*I    "petscsys.h"   I*/
     12: #include <petsctime.h>
     13: #include <petscviewer.h>

     15: PetscErrorCode PetscLogObjectParent(PetscObject p,PetscObject c)
     16: {
     17:   if (!c || !p) return 0;
     18:   c->parent   = p;
     19:   c->parentid = p->id;
     20:   return 0;
     21: }

     23: PetscErrorCode PetscLogObjectMemory(PetscObject p,PetscLogDouble m)
     24: {
     25:   if (!p) return 0;
     26:   p->mem += m;
     27:   return 0;
     28: }

     30: PetscLogEvent PETSC_LARGEST_EVENT = PETSC_EVENT;

     32: #if defined(PETSC_USE_LOG)
     33: #include <petscmachineinfo.h>
     34: #include <petscconfiginfo.h>

     36: /* used in the MPI_XXX() count macros in petsclog.h */

     38: /* Action and object logging variables */
     39: Action    *petsc_actions            = NULL;
     40: Object    *petsc_objects            = NULL;
     41: PetscBool petsc_logActions          = PETSC_FALSE;
     42: PetscBool petsc_logObjects          = PETSC_FALSE;
     43: int       petsc_numActions          = 0, petsc_maxActions = 100;
     44: int       petsc_numObjects          = 0, petsc_maxObjects = 100;
     45: int       petsc_numObjectsDestroyed = 0;

     47: /* Global counters */
     48: PetscLogDouble petsc_BaseTime        = 0.0;
     49: PetscLogDouble petsc_TotalFlops      = 0.0;  /* The number of flops */
     50: PetscLogDouble petsc_tmp_flops       = 0.0;  /* The incremental number of flops */
     51: PetscLogDouble petsc_send_ct         = 0.0;  /* The number of sends */
     52: PetscLogDouble petsc_recv_ct         = 0.0;  /* The number of receives */
     53: PetscLogDouble petsc_send_len        = 0.0;  /* The total length of all sent messages */
     54: PetscLogDouble petsc_recv_len        = 0.0;  /* The total length of all received messages */
     55: PetscLogDouble petsc_isend_ct        = 0.0;  /* The number of immediate sends */
     56: PetscLogDouble petsc_irecv_ct        = 0.0;  /* The number of immediate receives */
     57: PetscLogDouble petsc_isend_len       = 0.0;  /* The total length of all immediate send messages */
     58: PetscLogDouble petsc_irecv_len       = 0.0;  /* The total length of all immediate receive messages */
     59: PetscLogDouble petsc_wait_ct         = 0.0;  /* The number of waits */
     60: PetscLogDouble petsc_wait_any_ct     = 0.0;  /* The number of anywaits */
     61: PetscLogDouble petsc_wait_all_ct     = 0.0;  /* The number of waitalls */
     62: PetscLogDouble petsc_sum_of_waits_ct = 0.0;  /* The total number of waits */
     63: PetscLogDouble petsc_allreduce_ct    = 0.0;  /* The number of reductions */
     64: PetscLogDouble petsc_gather_ct       = 0.0;  /* The number of gathers and gathervs */
     65: PetscLogDouble petsc_scatter_ct      = 0.0;  /* The number of scatters and scattervs */

     67: /* Logging functions */
     68: PetscErrorCode (*PetscLogPHC)(PetscObject) = NULL;
     69: PetscErrorCode (*PetscLogPHD)(PetscObject) = NULL;
     70: PetscErrorCode (*PetscLogPLB)(PetscLogEvent, int, PetscObject, PetscObject, PetscObject, PetscObject) = NULL;
     71: PetscErrorCode (*PetscLogPLE)(PetscLogEvent, int, PetscObject, PetscObject, PetscObject, PetscObject) = NULL;

     73: /* Tracing event logging variables */
     74: FILE             *petsc_tracefile            = NULL;
     75: int              petsc_tracelevel            = 0;
     76: const char       *petsc_traceblanks          = "                                                                                                    ";
     77: char             petsc_tracespace[128]       = " ";
     78: PetscLogDouble   petsc_tracetime             = 0.0;
     79: static PetscBool PetscLogInitializeCalled = PETSC_FALSE;

     81: /*---------------------------------------------- General Functions --------------------------------------------------*/
     84: /*@C
     85:   PetscLogDestroy - Destroys the object and event logging data and resets the global counters.

     87:   Not Collective

     89:   Notes:
     90:   This routine should not usually be used by programmers. Instead employ
     91:   PetscLogStagePush() and PetscLogStagePop().

     93:   Level: developer

     95: .keywords: log, destroy
     96: .seealso: PetscLogDump(), PetscLogAllBegin(), PetscLogView(), PetscLogStagePush(), PlogStagePop()
     97: @*/
     98: PetscErrorCode  PetscLogDestroy(void)
     99: {
    100:   PetscStageLog  stageLog;

    104:   PetscFree(petsc_actions);
    105:   PetscFree(petsc_objects);
    106:   PetscLogSet(NULL, NULL);

    108:   /* Resetting phase */
    109:   PetscLogGetStageLog(&stageLog);
    110:   PetscStageLogDestroy(stageLog);

    112:   petsc_TotalFlops            = 0.0;
    113:   petsc_numActions            = 0;
    114:   petsc_numObjects            = 0;
    115:   petsc_numObjectsDestroyed   = 0;
    116:   petsc_maxActions            = 100;
    117:   petsc_maxObjects            = 100;
    118:   petsc_actions               = NULL;
    119:   petsc_objects               = NULL;
    120:   petsc_logActions            = PETSC_FALSE;
    121:   petsc_logObjects            = PETSC_FALSE;
    122:   petsc_BaseTime              = 0.0;
    123:   petsc_TotalFlops            = 0.0;
    124:   petsc_tmp_flops             = 0.0;
    125:   petsc_send_ct               = 0.0;
    126:   petsc_recv_ct               = 0.0;
    127:   petsc_send_len              = 0.0;
    128:   petsc_recv_len              = 0.0;
    129:   petsc_isend_ct              = 0.0;
    130:   petsc_irecv_ct              = 0.0;
    131:   petsc_isend_len             = 0.0;
    132:   petsc_irecv_len             = 0.0;
    133:   petsc_wait_ct               = 0.0;
    134:   petsc_wait_any_ct           = 0.0;
    135:   petsc_wait_all_ct           = 0.0;
    136:   petsc_sum_of_waits_ct       = 0.0;
    137:   petsc_allreduce_ct          = 0.0;
    138:   petsc_gather_ct             = 0.0;
    139:   petsc_scatter_ct            = 0.0;
    140:   PETSC_LARGEST_EVENT         = PETSC_EVENT;
    141:   PetscLogPHC                 = NULL;
    142:   PetscLogPHD                 = NULL;
    143:   petsc_tracefile             = NULL;
    144:   petsc_tracelevel            = 0;
    145:   petsc_traceblanks           = "                                                                                                    ";
    146:   petsc_tracespace[0]         = ' '; petsc_tracespace[1] = 0;
    147:   petsc_tracetime             = 0.0;
    148:   PETSC_LARGEST_CLASSID       = PETSC_SMALLEST_CLASSID;
    149:   PETSC_OBJECT_CLASSID        = 0;
    150:   petsc_stageLog              = 0;
    151:   PetscLogInitializeCalled = PETSC_FALSE;
    152:   return(0);
    153: }

    157: /*@C
    158:   PetscLogSet - Sets the logging functions called at the beginning and ending of every event.

    160:   Not Collective

    162:   Input Parameters:
    163: + b - The function called at beginning of event
    164: - e - The function called at end of event

    166:   Level: developer

    168: .seealso: PetscLogDump(), PetscLogDefaultBegin(), PetscLogAllBegin(), PetscLogTraceBegin()
    169: @*/
    170: PetscErrorCode  PetscLogSet(PetscErrorCode (*b)(PetscLogEvent, int, PetscObject, PetscObject, PetscObject, PetscObject),
    171:                             PetscErrorCode (*e)(PetscLogEvent, int, PetscObject, PetscObject, PetscObject, PetscObject))
    172: {
    174:   PetscLogPLB = b;
    175:   PetscLogPLE = e;
    176:   return(0);
    177: }

    179: #if defined(PETSC_HAVE_PAPI)
    180: #include <papi.h>
    181: int PAPIEventSet = PAPI_NULL;
    182: #endif

    184: /*------------------------------------------- Initialization Functions ----------------------------------------------*/
    187: /*
    188:     The data structures for logging are always created even if no logging is turned on. This is so events etc can
    189:   be registered in the code before the actually logging is turned on.
    190:  */
    191: PetscErrorCode  PetscLogInitialize(void)
    192: {
    193:   int            stage;
    194:   PetscBool      opt;

    198:   if (PetscLogInitializeCalled) return(0);
    199:   PetscLogInitializeCalled = PETSC_TRUE;

    201:   PetscOptionsHasName(NULL,NULL, "-log_exclude_actions", &opt);
    202:   if (opt) petsc_logActions = PETSC_FALSE;
    203:   PetscOptionsHasName(NULL,NULL, "-log_exclude_objects", &opt);
    204:   if (opt) petsc_logObjects = PETSC_FALSE;
    205:   if (petsc_logActions) {
    206:     PetscMalloc1(petsc_maxActions, &petsc_actions);
    207:   }
    208:   if (petsc_logObjects) {
    209:     PetscMalloc1(petsc_maxObjects, &petsc_objects);
    210:   }
    211:   PetscLogPHC = PetscLogObjCreateDefault;
    212:   PetscLogPHD = PetscLogObjDestroyDefault;
    213:   /* Setup default logging structures */
    214:   PetscStageLogCreate(&petsc_stageLog);
    215:   PetscStageLogRegister(petsc_stageLog, "Main Stage", &stage);
    216: #if defined(PETSC_HAVE_PAPI)
    217:   PAPI_library_init(PAPI_VER_CURRENT);
    218:   if (ierr != PAPI_VER_CURRENT) SETERRQ(PETSC_COMM_SELF,PETSC_ERR_LIB,"Cannot initialize PAPI");
    219:   PAPI_query_event(PAPI_FP_INS);
    220:   PAPI_create_eventset(&PAPIEventSet);
    221:   PAPI_add_event(PAPIEventSet,PAPI_FP_INS);
    222:   PAPI_start(PAPIEventSet);
    223: #endif

    225:   /* All processors sync here for more consistent logging */
    226:   MPI_Barrier(PETSC_COMM_WORLD);
    227:   PetscTime(&petsc_BaseTime);
    228:   PetscLogStagePush(stage);
    229:   return(0);
    230: }

    234: /*@C
    235:   PetscLogDefaultBegin - Turns on logging of objects and events. This logs flop
    236:   rates and object creation and should not slow programs down too much.
    237:   This routine may be called more than once.

    239:   Logically Collective over PETSC_COMM_WORLD

    241:   Options Database Keys:
    242: . -log_view [viewertype:filename:viewerformat] - Prints summary of flop and timing information to the
    243:                   screen (for code configured with --with-log=1 (which is the default))

    245:   Usage:
    246: .vb
    247:       PetscInitialize(...);
    248:       PetscLogDefaultBegin();
    249:        ... code ...
    250:       PetscLogView(viewer); or PetscLogDump();
    251:       PetscFinalize();
    252: .ve

    254:   Notes:
    255:   PetscLogView(viewer) or PetscLogDump() actually cause the printing of
    256:   the logging information.

    258:   Level: advanced

    260: .keywords: log, begin
    261: .seealso: PetscLogDump(), PetscLogAllBegin(), PetscLogView(), PetscLogTraceBegin()
    262: @*/
    263: PetscErrorCode  PetscLogDefaultBegin(void)
    264: {

    268:   PetscLogSet(PetscLogEventBeginDefault, PetscLogEventEndDefault);
    269:   return(0);
    270: }

    274: /*@C
    275:   PetscLogAllBegin - Turns on extensive logging of objects and events. Logs
    276:   all events. This creates large log files and slows the program down.

    278:   Logically Collective on PETSC_COMM_WORLD

    280:   Options Database Keys:
    281: . -log_all - Prints extensive log information

    283:   Usage:
    284: .vb
    285:      PetscInitialize(...);
    286:      PetscLogAllBegin();
    287:      ... code ...
    288:      PetscLogDump(filename);
    289:      PetscFinalize();
    290: .ve

    292:   Notes:
    293:   A related routine is PetscLogDefaultBegin() (with the options key -log), which is
    294:   intended for production runs since it logs only flop rates and object
    295:   creation (and shouldn't significantly slow the programs).

    297:   Level: advanced

    299: .keywords: log, all, begin
    300: .seealso: PetscLogDump(), PetscLogDefaultBegin(), PetscLogTraceBegin()
    301: @*/
    302: PetscErrorCode  PetscLogAllBegin(void)
    303: {

    307:   PetscLogSet(PetscLogEventBeginComplete, PetscLogEventEndComplete);
    308:   return(0);
    309: }

    313: /*@
    314:   PetscLogTraceBegin - Activates trace logging.  Every time a PETSc event
    315:   begins or ends, the event name is printed.

    317:   Logically Collective on PETSC_COMM_WORLD

    319:   Input Parameter:
    320: . file - The file to print trace in (e.g. stdout)

    322:   Options Database Key:
    323: . -log_trace [filename] - Activates PetscLogTraceBegin()

    325:   Notes:
    326:   PetscLogTraceBegin() prints the processor number, the execution time (sec),
    327:   then "Event begin:" or "Event end:" followed by the event name.

    329:   PetscLogTraceBegin() allows tracing of all PETSc calls, which is useful
    330:   to determine where a program is hanging without running in the
    331:   debugger.  Can be used in conjunction with the -info option.

    333:   Level: intermediate

    335: .seealso: PetscLogDump(), PetscLogAllBegin(), PetscLogView(), PetscLogDefaultBegin()
    336: @*/
    337: PetscErrorCode  PetscLogTraceBegin(FILE *file)
    338: {

    342:   petsc_tracefile = file;

    344:   PetscLogSet(PetscLogEventBeginTrace, PetscLogEventEndTrace);
    345:   return(0);
    346: }

    350: /*@
    351:   PetscLogActions - Determines whether actions are logged for the graphical viewer.

    353:   Not Collective

    355:   Input Parameter:
    356: . flag - PETSC_TRUE if actions are to be logged

    358:   Level: intermediate

    360:   Note: Logging of actions continues to consume more memory as the program
    361:   runs. Long running programs should consider turning this feature off.

    363:   Options Database Keys:
    364: . -log_exclude_actions - Turns off actions logging

    366: .keywords: log, stage, register
    367: .seealso: PetscLogStagePush(), PetscLogStagePop()
    368: @*/
    369: PetscErrorCode  PetscLogActions(PetscBool flag)
    370: {
    372:   petsc_logActions = flag;
    373:   return(0);
    374: }

    378: /*@
    379:   PetscLogObjects - Determines whether objects are logged for the graphical viewer.

    381:   Not Collective

    383:   Input Parameter:
    384: . flag - PETSC_TRUE if objects are to be logged

    386:   Level: intermediate

    388:   Note: Logging of objects continues to consume more memory as the program
    389:   runs. Long running programs should consider turning this feature off.

    391:   Options Database Keys:
    392: . -log_exclude_objects - Turns off objects logging

    394: .keywords: log, stage, register
    395: .seealso: PetscLogStagePush(), PetscLogStagePop()
    396: @*/
    397: PetscErrorCode  PetscLogObjects(PetscBool flag)
    398: {
    400:   petsc_logObjects = flag;
    401:   return(0);
    402: }

    404: /*------------------------------------------------ Stage Functions --------------------------------------------------*/
    407: /*@C
    408:   PetscLogStageRegister - Attaches a charactor string name to a logging stage.

    410:   Not Collective

    412:   Input Parameter:
    413: . sname - The name to associate with that stage

    415:   Output Parameter:
    416: . stage - The stage number

    418:   Level: intermediate

    420: .keywords: log, stage, register
    421: .seealso: PetscLogStagePush(), PetscLogStagePop()
    422: @*/
    423: PetscErrorCode  PetscLogStageRegister(const char sname[],PetscLogStage *stage)
    424: {
    425:   PetscStageLog  stageLog;
    426:   PetscLogEvent  event;

    430:   PetscLogGetStageLog(&stageLog);
    431:   PetscStageLogRegister(stageLog, sname, stage);
    432:   /* Copy events already changed in the main stage, this sucks */
    433:   EventPerfLogEnsureSize(stageLog->stageInfo[*stage].eventLog, stageLog->eventLog->numEvents);
    434:   for (event = 0; event < stageLog->eventLog->numEvents; event++) {
    435:     EventPerfInfoCopy(&stageLog->stageInfo[0].eventLog->eventInfo[event],&stageLog->stageInfo[*stage].eventLog->eventInfo[event]);
    436:   }
    437:   ClassPerfLogEnsureSize(stageLog->stageInfo[*stage].classLog, stageLog->classLog->numClasses);
    438:   return(0);
    439: }

    443: /*@C
    444:   PetscLogStagePush - This function pushes a stage on the stack.

    446:   Not Collective

    448:   Input Parameter:
    449: . stage - The stage on which to log

    451:   Usage:
    452:   If the option -log_sumary is used to run the program containing the
    453:   following code, then 2 sets of summary data will be printed during
    454:   PetscFinalize().
    455: .vb
    456:       PetscInitialize(int *argc,char ***args,0,0);
    457:       [stage 0 of code]
    458:       PetscLogStagePush(1);
    459:       [stage 1 of code]
    460:       PetscLogStagePop();
    461:       PetscBarrier(...);
    462:       [more stage 0 of code]
    463:       PetscFinalize();
    464: .ve

    466:   Notes:
    467:   Use PetscLogStageRegister() to register a stage.

    469:   Level: intermediate

    471: .keywords: log, push, stage
    472: .seealso: PetscLogStagePop(), PetscLogStageRegister(), PetscBarrier()
    473: @*/
    474: PetscErrorCode  PetscLogStagePush(PetscLogStage stage)
    475: {
    476:   PetscStageLog  stageLog;

    480:   PetscLogGetStageLog(&stageLog);
    481:   PetscStageLogPush(stageLog, stage);
    482:   return(0);
    483: }

    487: /*@C
    488:   PetscLogStagePop - This function pops a stage from the stack.

    490:   Not Collective

    492:   Usage:
    493:   If the option -log_sumary is used to run the program containing the
    494:   following code, then 2 sets of summary data will be printed during
    495:   PetscFinalize().
    496: .vb
    497:       PetscInitialize(int *argc,char ***args,0,0);
    498:       [stage 0 of code]
    499:       PetscLogStagePush(1);
    500:       [stage 1 of code]
    501:       PetscLogStagePop();
    502:       PetscBarrier(...);
    503:       [more stage 0 of code]
    504:       PetscFinalize();
    505: .ve

    507:   Notes:
    508:   Use PetscLogStageRegister() to register a stage.

    510:   Level: intermediate

    512: .keywords: log, pop, stage
    513: .seealso: PetscLogStagePush(), PetscLogStageRegister(), PetscBarrier()
    514: @*/
    515: PetscErrorCode  PetscLogStagePop(void)
    516: {
    517:   PetscStageLog  stageLog;

    521:   PetscLogGetStageLog(&stageLog);
    522:   PetscStageLogPop(stageLog);
    523:   return(0);
    524: }

    528: /*@
    529:   PetscLogStageSetActive - Determines stage activity for PetscLogEventBegin() and PetscLogEventEnd().

    531:   Not Collective

    533:   Input Parameters:
    534: + stage    - The stage
    535: - isActive - The activity flag, PETSC_TRUE for logging, else PETSC_FALSE (defaults to PETSC_TRUE)

    537:   Level: intermediate

    539: .seealso: PetscLogStagePush(), PetscLogStagePop(), PetscLogEventBegin(), PetscLogEventEnd(), PetscPreLoadBegin(), PetscPreLoadEnd(), PetscPreLoadStage()
    540: @*/
    541: PetscErrorCode  PetscLogStageSetActive(PetscLogStage stage, PetscBool isActive)
    542: {
    543:   PetscStageLog  stageLog;

    547:   PetscLogGetStageLog(&stageLog);
    548:   PetscStageLogSetActive(stageLog, stage, isActive);
    549:   return(0);
    550: }

    554: /*@
    555:   PetscLogStageGetActive - Returns stage activity for PetscLogEventBegin() and PetscLogEventEnd().

    557:   Not Collective

    559:   Input Parameter:
    560: . stage    - The stage

    562:   Output Parameter:
    563: . isActive - The activity flag, PETSC_TRUE for logging, else PETSC_FALSE (defaults to PETSC_TRUE)

    565:   Level: intermediate

    567: .seealso: PetscLogStagePush(), PetscLogStagePop(), PetscLogEventBegin(), PetscLogEventEnd(), PetscPreLoadBegin(), PetscPreLoadEnd(), PetscPreLoadStage()
    568: @*/
    569: PetscErrorCode  PetscLogStageGetActive(PetscLogStage stage, PetscBool  *isActive)
    570: {
    571:   PetscStageLog  stageLog;

    575:   PetscLogGetStageLog(&stageLog);
    576:   PetscStageLogGetActive(stageLog, stage, isActive);
    577:   return(0);
    578: }

    582: /*@
    583:   PetscLogStageSetVisible - Determines stage visibility in PetscLogView()

    585:   Not Collective

    587:   Input Parameters:
    588: + stage     - The stage
    589: - isVisible - The visibility flag, PETSC_TRUE to print, else PETSC_FALSE (defaults to PETSC_TRUE)

    591:   Level: intermediate

    593: .seealso: PetscLogStagePush(), PetscLogStagePop(), PetscLogView()
    594: @*/
    595: PetscErrorCode  PetscLogStageSetVisible(PetscLogStage stage, PetscBool isVisible)
    596: {
    597:   PetscStageLog  stageLog;

    601:   PetscLogGetStageLog(&stageLog);
    602:   PetscStageLogSetVisible(stageLog, stage, isVisible);
    603:   return(0);
    604: }

    608: /*@
    609:   PetscLogStageGetVisible - Returns stage visibility in PetscLogView()

    611:   Not Collective

    613:   Input Parameter:
    614: . stage     - The stage

    616:   Output Parameter:
    617: . isVisible - The visibility flag, PETSC_TRUE to print, else PETSC_FALSE (defaults to PETSC_TRUE)

    619:   Level: intermediate

    621: .seealso: PetscLogStagePush(), PetscLogStagePop(), PetscLogView()
    622: @*/
    623: PetscErrorCode  PetscLogStageGetVisible(PetscLogStage stage, PetscBool  *isVisible)
    624: {
    625:   PetscStageLog  stageLog;

    629:   PetscLogGetStageLog(&stageLog);
    630:   PetscStageLogGetVisible(stageLog, stage, isVisible);
    631:   return(0);
    632: }

    636: /*@C
    637:   PetscLogStageGetId - Returns the stage id when given the stage name.

    639:   Not Collective

    641:   Input Parameter:
    642: . name  - The stage name

    644:   Output Parameter:
    645: . stage - The stage, , or -1 if no stage with that name exists

    647:   Level: intermediate

    649: .seealso: PetscLogStagePush(), PetscLogStagePop(), PetscPreLoadBegin(), PetscPreLoadEnd(), PetscPreLoadStage()
    650: @*/
    651: PetscErrorCode  PetscLogStageGetId(const char name[], PetscLogStage *stage)
    652: {
    653:   PetscStageLog  stageLog;

    657:   PetscLogGetStageLog(&stageLog);
    658:   PetscStageLogGetStage(stageLog, name, stage);
    659:   return(0);
    660: }

    662: /*------------------------------------------------ Event Functions --------------------------------------------------*/
    665: /*@C
    666:   PetscLogEventRegister - Registers an event name for logging operations in an application code.

    668:   Not Collective

    670:   Input Parameter:
    671: + name   - The name associated with the event
    672: - classid - The classid associated to the class for this event, obtain either with
    673:            PetscClassIdRegister() or use a predefined one such as KSP_CLASSID, SNES_CLASSID, the predefined ones
    674:            are only available in C code

    676:   Output Parameter:
    677: . event - The event id for use with PetscLogEventBegin() and PetscLogEventEnd().

    679:   Example of Usage:
    680: .vb
    681:       PetscLogEvent USER_EVENT;
    682:       PetscClassId classid;
    683:       PetscLogDouble user_event_flops;
    684:       PetscClassIdRegister("class name",&classid);
    685:       PetscLogEventRegister("User event name",classid,&USER_EVENT);
    686:       PetscLogEventBegin(USER_EVENT,0,0,0,0);
    687:          [code segment to monitor]
    688:          PetscLogFlops(user_event_flops);
    689:       PetscLogEventEnd(USER_EVENT,0,0,0,0);
    690: .ve

    692:   Notes:
    693:   PETSc automatically logs library events if the code has been
    694:   configured with --with-log (which is the default) and
    695:   -log_view or -log_all is specified.  PetscLogEventRegister() is
    696:   intended for logging user events to supplement this PETSc
    697:   information.

    699:   PETSc can gather data for use with the utilities Jumpshot
    700:   (part of the MPICH distribution).  If PETSc has been compiled
    701:   with flag -DPETSC_HAVE_MPE (MPE is an additional utility within
    702:   MPICH), the user can employ another command line option, -log_mpe,
    703:   to create a logfile, "mpe.log", which can be visualized
    704:   Jumpshot.

    706:   The classid is associated with each event so that classes of events
    707:   can be disabled simultaneously, such as all matrix events. The user
    708:   can either use an existing classid, such as MAT_CLASSID, or create
    709:   their own as shown in the example.

    711:   If an existing event with the same name exists, its event handle is
    712:   returned instead of creating a new event.

    714:   Level: intermediate

    716: .keywords: log, event, register
    717: .seealso: PetscLogEventBegin(), PetscLogEventEnd(), PetscLogFlops(),
    718:           PetscLogEventMPEActivate(), PetscLogEventMPEDeactivate(),
    719:           PetscLogEventActivate(), PetscLogEventDeactivate(), PetscClassIdRegister()
    720: @*/
    721: PetscErrorCode  PetscLogEventRegister(const char name[],PetscClassId classid,PetscLogEvent *event)
    722: {
    723:   PetscStageLog  stageLog;
    724:   int            stage;

    728:   *event = PETSC_DECIDE;
    729:   PetscLogGetStageLog(&stageLog);
    730:   EventRegLogGetEvent(stageLog->eventLog, name, event);
    731:   if (*event > 0) return(0);
    732:   EventRegLogRegister(stageLog->eventLog, name, classid, event);
    733:   for (stage = 0; stage < stageLog->numStages; stage++) {
    734:     EventPerfLogEnsureSize(stageLog->stageInfo[stage].eventLog, stageLog->eventLog->numEvents);
    735:     ClassPerfLogEnsureSize(stageLog->stageInfo[stage].classLog, stageLog->classLog->numClasses);
    736:   }
    737:   return(0);
    738: }

    742: /*@
    743:   PetscLogEventActivate - Indicates that a particular event should be logged.

    745:   Not Collective

    747:   Input Parameter:
    748: . event - The event id

    750:   Usage:
    751: .vb
    752:       PetscLogEventDeactivate(VEC_SetValues);
    753:         [code where you do not want to log VecSetValues()]
    754:       PetscLogEventActivate(VEC_SetValues);
    755:         [code where you do want to log VecSetValues()]
    756: .ve

    758:   Note:
    759:   The event may be either a pre-defined PETSc event (found in include/petsclog.h)
    760:   or an event number obtained with PetscLogEventRegister().

    762:   Level: advanced

    764: .keywords: log, event, activate
    765: .seealso: PetscLogEventMPEDeactivate(),PetscLogEventMPEActivate(),PlogEventDeactivate()
    766: @*/
    767: PetscErrorCode  PetscLogEventActivate(PetscLogEvent event)
    768: {
    769:   PetscStageLog  stageLog;
    770:   int            stage;

    774:   PetscLogGetStageLog(&stageLog);
    775:   PetscStageLogGetCurrent(stageLog, &stage);
    776:   EventPerfLogActivate(stageLog->stageInfo[stage].eventLog, event);
    777:   return(0);
    778: }

    782: /*@
    783:   PetscLogEventDeactivate - Indicates that a particular event should not be logged.

    785:   Not Collective

    787:   Input Parameter:
    788: . event - The event id

    790:   Usage:
    791: .vb
    792:       PetscLogEventDeactivate(VEC_SetValues);
    793:         [code where you do not want to log VecSetValues()]
    794:       PetscLogEventActivate(VEC_SetValues);
    795:         [code where you do want to log VecSetValues()]
    796: .ve

    798:   Note:
    799:   The event may be either a pre-defined PETSc event (found in
    800:   include/petsclog.h) or an event number obtained with PetscLogEventRegister()).

    802:   Level: advanced

    804: .keywords: log, event, deactivate
    805: .seealso: PetscLogEventMPEDeactivate(),PetscLogEventMPEActivate(),PlogEventActivate()
    806: @*/
    807: PetscErrorCode  PetscLogEventDeactivate(PetscLogEvent event)
    808: {
    809:   PetscStageLog  stageLog;
    810:   int            stage;

    814:   PetscLogGetStageLog(&stageLog);
    815:   PetscStageLogGetCurrent(stageLog, &stage);
    816:   EventPerfLogDeactivate(stageLog->stageInfo[stage].eventLog, event);
    817:   return(0);
    818: }

    822: /*@
    823:   PetscLogEventSetActiveAll - Sets the event activity in every stage.

    825:   Not Collective

    827:   Input Parameters:
    828: + event    - The event id
    829: - isActive - The activity flag determining whether the event is logged

    831:   Level: advanced

    833: .keywords: log, event, activate
    834: .seealso: PetscLogEventMPEDeactivate(),PetscLogEventMPEActivate(),PlogEventActivate(),PlogEventDeactivate()
    835: @*/
    836: PetscErrorCode  PetscLogEventSetActiveAll(PetscLogEvent event, PetscBool isActive)
    837: {
    838:   PetscStageLog  stageLog;
    839:   int            stage;

    843:   PetscLogGetStageLog(&stageLog);
    844:   for (stage = 0; stage < stageLog->numStages; stage++) {
    845:     if (isActive) {
    846:       EventPerfLogActivate(stageLog->stageInfo[stage].eventLog, event);
    847:     } else {
    848:       EventPerfLogDeactivate(stageLog->stageInfo[stage].eventLog, event);
    849:     }
    850:   }
    851:   return(0);
    852: }

    856: /*@
    857:   PetscLogEventActivateClass - Activates event logging for a PETSc object class.

    859:   Not Collective

    861:   Input Parameter:
    862: . classid - The event class, for example MAT_CLASSID, SNES_CLASSID, etc.

    864:   Level: developer

    866: .keywords: log, event, activate, class
    867: .seealso: PetscInfoActivate(),PetscInfo(),PetscInfoAllow(),PetscLogEventDeactivateClass(), PetscLogEventActivate(),PetscLogEventDeactivate()
    868: @*/
    869: PetscErrorCode  PetscLogEventActivateClass(PetscClassId classid)
    870: {
    871:   PetscStageLog  stageLog;
    872:   int            stage;

    876:   PetscLogGetStageLog(&stageLog);
    877:   PetscStageLogGetCurrent(stageLog, &stage);
    878:   EventPerfLogActivateClass(stageLog->stageInfo[stage].eventLog, stageLog->eventLog, classid);
    879:   return(0);
    880: }

    884: /*@
    885:   PetscLogEventDeactivateClass - Deactivates event logging for a PETSc object class.

    887:   Not Collective

    889:   Input Parameter:
    890: . classid - The event class, for example MAT_CLASSID, SNES_CLASSID, etc.

    892:   Level: developer

    894: .keywords: log, event, deactivate, class
    895: .seealso: PetscInfoActivate(),PetscInfo(),PetscInfoAllow(),PetscLogEventActivateClass(), PetscLogEventActivate(),PetscLogEventDeactivate()
    896: @*/
    897: PetscErrorCode  PetscLogEventDeactivateClass(PetscClassId classid)
    898: {
    899:   PetscStageLog  stageLog;
    900:   int            stage;

    904:   PetscLogGetStageLog(&stageLog);
    905:   PetscStageLogGetCurrent(stageLog, &stage);
    906:   EventPerfLogDeactivateClass(stageLog->stageInfo[stage].eventLog, stageLog->eventLog, classid);
    907:   return(0);
    908: }

    910: /*MC
    911:    PetscLogEventBegin - Logs the beginning of a user event.

    913:    Synopsis:
    914:    #include <petsclog.h>
    915:    PetscErrorCode PetscLogEventBegin(int e,PetscObject o1,PetscObject o2,PetscObject o3,PetscObject o4)

    917:    Not Collective

    919:    Input Parameters:
    920: +  e - integer associated with the event obtained from PetscLogEventRegister()
    921: -  o1,o2,o3,o4 - objects associated with the event, or 0

    924:    Fortran Synopsis:
    925:    void PetscLogEventBegin(int e,PetscErrorCode ierr)

    927:    Usage:
    928: .vb
    929:      PetscLogEvent USER_EVENT;
    930:      PetscLogDouble user_event_flops;
    931:      PetscLogEventRegister("User event",0,&USER_EVENT);
    932:      PetscLogEventBegin(USER_EVENT,0,0,0,0);
    933:         [code segment to monitor]
    934:         PetscLogFlops(user_event_flops);
    935:      PetscLogEventEnd(USER_EVENT,0,0,0,0);
    936: .ve

    938:    Notes:
    939:    You need to register each integer event with the command
    940:    PetscLogEventRegister().

    942:    Level: intermediate

    944: .seealso: PetscLogEventRegister(), PetscLogEventEnd(), PetscLogFlops()

    946: .keywords: log, event, begin
    947: M*/

    949: /*MC
    950:    PetscLogEventEnd - Log the end of a user event.

    952:    Synopsis:
    953:    #include <petsclog.h>
    954:    PetscErrorCode PetscLogEventEnd(int e,PetscObject o1,PetscObject o2,PetscObject o3,PetscObject o4)

    956:    Not Collective

    958:    Input Parameters:
    959: +  e - integer associated with the event obtained with PetscLogEventRegister()
    960: -  o1,o2,o3,o4 - objects associated with the event, or 0

    963:    Fortran Synopsis:
    964:    void PetscLogEventEnd(int e,PetscErrorCode ierr)

    966:    Usage:
    967: .vb
    968:      PetscLogEvent USER_EVENT;
    969:      PetscLogDouble user_event_flops;
    970:      PetscLogEventRegister("User event",0,&USER_EVENT,);
    971:      PetscLogEventBegin(USER_EVENT,0,0,0,0);
    972:         [code segment to monitor]
    973:         PetscLogFlops(user_event_flops);
    974:      PetscLogEventEnd(USER_EVENT,0,0,0,0);
    975: .ve

    977:    Notes:
    978:    You should also register each additional integer event with the command
    979:    PetscLogEventRegister().

    981:    Level: intermediate

    983: .seealso: PetscLogEventRegister(), PetscLogEventBegin(), PetscLogFlops()

    985: .keywords: log, event, end
    986: M*/

    988: /*MC
    989:    PetscLogEventBarrierBegin - Logs the time in a barrier before an event.

    991:    Synopsis:
    992:    #include <petsclog.h>
    993:    PetscErrorCode PetscLogEventBarrierBegin(int e,PetscObject o1,PetscObject o2,PetscObject o3,PetscObject o4,MPI_Comm comm)

    995:    Not Collective

    997:    Input Parameters:
    998: .  e - integer associated with the event obtained from PetscLogEventRegister()
    999: .  o1,o2,o3,o4 - objects associated with the event, or 0
    1000: .  comm - communicator the barrier takes place over

    1003:    Usage:
    1004: .vb
    1005:      PetscLogEventBarrierBegin(VEC_NormBarrier,0,0,0,0,comm);
    1006:        MPIU_Allreduce()
    1007:      PetscLogEventBarrierEnd(VEC_NormBarrier,0,0,0,0,comm);
    1008: .ve

    1010:    Notes:
    1011:    This is for logging the amount of time spent in a barrier for an event
    1012:    that requires synchronization.

    1014:    Additional Notes:
    1015:    Synchronization events always come in pairs; for example, VEC_NormBarrier and
    1016:    VEC_NormComm = VEC_NormBarrier + 1

    1018:    Level: advanced

    1020: .seealso: PetscLogEventRegister(), PetscLogEventEnd(), PetscLogFlops(), PetscLogEventBegin(),
    1021:           PetscLogEventBarrierEnd()

    1023: .keywords: log, event, begin, barrier
    1024: M*/

    1026: /*MC
    1027:    PetscLogEventBarrierEnd - Logs the time in a barrier before an event.

    1029:    Synopsis:
    1030:    #include <petsclog.h>
    1031:    PetscErrorCode PetscLogEventBarrierEnd(int e,PetscObject o1,PetscObject o2,PetscObject o3,PetscObject o4,MPI_Comm comm)

    1033:    Logically Collective on MPI_Comm

    1035:    Input Parameters:
    1036: .  e - integer associated with the event obtained from PetscLogEventRegister()
    1037: .  o1,o2,o3,o4 - objects associated with the event, or 0
    1038: .  comm - communicator the barrier takes place over

    1041:     Usage:
    1042: .vb
    1043:      PetscLogEventBarrierBegin(VEC_NormBarrier,0,0,0,0,comm);
    1044:        MPIU_Allreduce()
    1045:      PetscLogEventBarrierEnd(VEC_NormBarrier,0,0,0,0,comm);
    1046: .ve

    1048:    Notes:
    1049:    This is for logging the amount of time spent in a barrier for an event
    1050:    that requires synchronization.

    1052:    Additional Notes:
    1053:    Synchronization events always come in pairs; for example, VEC_NormBarrier and
    1054:    VEC_NormComm = VEC_NormBarrier + 1

    1056:    Level: advanced

    1058: .seealso: PetscLogEventRegister(), PetscLogEventEnd(), PetscLogFlops(), PetscLogEventBegin(),
    1059:           PetscLogEventBarrierBegin()

    1061: .keywords: log, event, begin, barrier
    1062: M*/

    1066: /*@C
    1067:   PetscLogEventGetId - Returns the event id when given the event name.

    1069:   Not Collective

    1071:   Input Parameter:
    1072: . name  - The event name

    1074:   Output Parameter:
    1075: . event - The event, or -1 if no event with that name exists

    1077:   Level: intermediate

    1079: .seealso: PetscLogEventBegin(), PetscLogEventEnd(), PetscLogStageGetId()
    1080: @*/
    1081: PetscErrorCode  PetscLogEventGetId(const char name[], PetscLogEvent *event)
    1082: {
    1083:   PetscStageLog  stageLog;

    1087:   PetscLogGetStageLog(&stageLog);
    1088:   EventRegLogGetEvent(stageLog->eventLog, name, event);
    1089:   return(0);
    1090: }

    1093: /*------------------------------------------------ Output Functions -------------------------------------------------*/
    1096: /*@C
    1097:   PetscLogDump - Dumps logs of objects to a file. This file is intended to
    1098:   be read by bin/petscview. This program no longer exists.

    1100:   Collective on PETSC_COMM_WORLD

    1102:   Input Parameter:
    1103: . name - an optional file name

    1105:   Usage:
    1106: .vb
    1107:      PetscInitialize(...);
    1108:      PetscLogDefaultBegin(); or PetscLogAllBegin();
    1109:      ... code ...
    1110:      PetscLogDump(filename);
    1111:      PetscFinalize();
    1112: .ve

    1114:   Notes:
    1115:   The default file name is
    1116: $    Log.<rank>
    1117:   where <rank> is the processor number. If no name is specified,
    1118:   this file will be used.

    1120:   Level: advanced

    1122: .keywords: log, dump
    1123: .seealso: PetscLogDefaultBegin(), PetscLogAllBegin(), PetscLogView()
    1124: @*/
    1125: PetscErrorCode  PetscLogDump(const char sname[])
    1126: {
    1127:   PetscStageLog      stageLog;
    1128:   PetscEventPerfInfo *eventInfo;
    1129:   FILE               *fd;
    1130:   char               file[PETSC_MAX_PATH_LEN], fname[PETSC_MAX_PATH_LEN];
    1131:   PetscLogDouble     flops, _TotalTime;
    1132:   PetscMPIInt        rank;
    1133:   int                action, object, curStage;
    1134:   PetscLogEvent      event;
    1135:   PetscErrorCode     ierr;

    1138:   /* Calculate the total elapsed time */
    1139:   PetscTime(&_TotalTime);
    1140:   _TotalTime -= petsc_BaseTime;
    1141:   /* Open log file */
    1142:   MPI_Comm_rank(PETSC_COMM_WORLD, &rank);
    1143:   if (sname) sprintf(file, "%s.%d", sname, rank);
    1144:   else sprintf(file, "Log.%d", rank);
    1145:   PetscFixFilename(file, fname);
    1146:   PetscFOpen(PETSC_COMM_WORLD, fname, "w", &fd);
    1147:   if ((!rank) && (!fd)) SETERRQ1(PETSC_COMM_SELF,PETSC_ERR_FILE_OPEN, "Cannot open file: %s", fname);
    1148:   /* Output totals */
    1149:   PetscFPrintf(PETSC_COMM_WORLD, fd, "Total Flops %14e %16.8e\n", petsc_TotalFlops, _TotalTime);
    1150:   PetscFPrintf(PETSC_COMM_WORLD, fd, "Clock Resolution %g\n", 0.0);
    1151:   /* Output actions */
    1152:   if (petsc_logActions) {
    1153:     PetscFPrintf(PETSC_COMM_WORLD, fd, "Actions accomplished %d\n", petsc_numActions);
    1154:     for (action = 0; action < petsc_numActions; action++) {
    1155:       PetscFPrintf(PETSC_COMM_WORLD, fd, "%g %d %d %d %d %d %d %g %g %g\n",
    1156:                           petsc_actions[action].time, petsc_actions[action].action, (int)petsc_actions[action].event, (int)petsc_actions[action].classid, petsc_actions[action].id1,
    1157:                           petsc_actions[action].id2, petsc_actions[action].id3, petsc_actions[action].flops, petsc_actions[action].mem, petsc_actions[action].maxmem);
    1158:     }
    1159:   }
    1160:   /* Output objects */
    1161:   if (petsc_logObjects) {
    1162:     PetscFPrintf(PETSC_COMM_WORLD, fd, "Objects created %d destroyed %d\n", petsc_numObjects, petsc_numObjectsDestroyed);
    1163:     for (object = 0; object < petsc_numObjects; object++) {
    1164:       PetscFPrintf(PETSC_COMM_WORLD, fd, "Parent ID: %d Memory: %d\n", petsc_objects[object].parent, (int) petsc_objects[object].mem);
    1165:       if (!petsc_objects[object].name[0]) {
    1166:         PetscFPrintf(PETSC_COMM_WORLD, fd,"No Name\n");
    1167:       } else {
    1168:         PetscFPrintf(PETSC_COMM_WORLD, fd, "Name: %s\n", petsc_objects[object].name);
    1169:       }
    1170:       if (petsc_objects[object].info[0] != 0) {
    1171:         PetscFPrintf(PETSC_COMM_WORLD, fd, "No Info\n");
    1172:       } else {
    1173:         PetscFPrintf(PETSC_COMM_WORLD, fd, "Info: %s\n", petsc_objects[object].info);
    1174:       }
    1175:     }
    1176:   }
    1177:   /* Output events */
    1178:   PetscFPrintf(PETSC_COMM_WORLD, fd, "Event log:\n");
    1179:   PetscLogGetStageLog(&stageLog);
    1180:   PetscIntStackTop(stageLog->stack, &curStage);
    1181:   eventInfo = stageLog->stageInfo[curStage].eventLog->eventInfo;
    1182:   for (event = 0; event < stageLog->stageInfo[curStage].eventLog->numEvents; event++) {
    1183:     if (eventInfo[event].time != 0.0) flops = eventInfo[event].flops/eventInfo[event].time;
    1184:     else flops = 0.0;
    1185:     PetscFPrintf(PETSC_COMM_WORLD, fd, "%d %16d %16g %16g %16g\n", event, eventInfo[event].count,
    1186:                         eventInfo[event].flops, eventInfo[event].time, flops);
    1187:   }
    1188:   PetscFClose(PETSC_COMM_WORLD, fd);
    1189:   return(0);
    1190: }

    1194: /*
    1195:   PetscLogView_Detailed - Each process prints the times for its own events

    1197: */
    1198: PetscErrorCode  PetscLogView_Detailed(PetscViewer viewer)
    1199: {
    1200:   MPI_Comm           comm       = PetscObjectComm((PetscObject) viewer);
    1201:   PetscEventPerfInfo *eventInfo = NULL;
    1202:   PetscLogDouble     locTotalTime, numRed, maxMem;
    1203:   PetscStageLog      stageLog;
    1204:   int                numStages,numEvents,stage,event;
    1205:   PetscMPIInt        rank,size;
    1206:   PetscErrorCode     ierr;

    1209:   MPI_Comm_size(comm, &size);
    1210:   MPI_Comm_rank(comm, &rank);
    1211:   /* Must preserve reduction count before we go on */
    1212:   numRed = petsc_allreduce_ct + petsc_gather_ct + petsc_scatter_ct;
    1213:   /* Get the total elapsed time */
    1214:   PetscTime(&locTotalTime);  locTotalTime -= petsc_BaseTime;
    1215:   PetscViewerASCIIPrintf(viewer,"numProcs   = %d\n",size);
    1216:   PetscViewerASCIIPrintf(viewer,"LocalTimes = {}\n");
    1217:   PetscViewerASCIIPrintf(viewer,"LocalFlops = {}\n");
    1218:   PetscViewerASCIIPrintf(viewer,"LocalMessageLens = {}\n");
    1219:   PetscViewerASCIIPrintf(viewer,"LocalMessages = {}\n");
    1220:   PetscViewerASCIIPrintf(viewer,"LocalReductions = {}\n");
    1221:   PetscViewerASCIIPrintf(viewer,"LocalObjects = {}\n");
    1222:   PetscViewerASCIIPrintf(viewer,"LocalMemory = {}\n");
    1223:   PetscLogGetStageLog(&stageLog);
    1224:   MPIU_Allreduce(&stageLog->numStages, &numStages, 1, MPI_INT, MPI_MAX, comm);
    1225:   PetscViewerASCIIPrintf(viewer,"Stages = {}\n");
    1226:   for (stage=0; stage<numStages; stage++) {
    1227:     PetscViewerASCIIPrintf(viewer,"Stages[\"%s\"] = {}\n",stageLog->stageInfo[stage].name);
    1228:     PetscViewerASCIIPrintf(viewer,"Stages[\"%s\"][\"summary\"] = {}\n",stageLog->stageInfo[stage].name);
    1229:     MPIU_Allreduce(&stageLog->stageInfo[stage].eventLog->numEvents, &numEvents, 1, MPI_INT, MPI_MAX, comm);
    1230:     for (event = 0; event < numEvents; event++) {
    1231:       PetscViewerASCIIPrintf(viewer,"Stages[\"%s\"][\"%s\"] = {}\n",stageLog->stageInfo[stage].name,stageLog->eventLog->eventInfo[event].name);
    1232:     }
    1233:   }
    1234:   PetscViewerASCIIPushSynchronized(viewer);
    1235:   PetscViewerASCIISynchronizedPrintf(viewer,"LocalTimes[%d] = %g\n",rank,locTotalTime);
    1236:   PetscViewerASCIISynchronizedPrintf(viewer,"LocalFlops[%d] = %g\n",rank,petsc_TotalFlops);
    1237:   PetscViewerASCIISynchronizedPrintf(viewer,"LocalMessageLens[%d] = %g\n",rank,(petsc_irecv_len + petsc_isend_len + petsc_recv_len + petsc_send_len));
    1238:   PetscViewerASCIISynchronizedPrintf(viewer,"LocalMessages[%d] = %g\n",rank,(petsc_irecv_ct + petsc_isend_ct + petsc_recv_ct + petsc_send_ct));
    1239:   PetscViewerASCIISynchronizedPrintf(viewer,"LocalReductions[%d] = %g\n",rank,numRed);
    1240:   PetscViewerASCIISynchronizedPrintf(viewer,"LocalObjects[%d] = %g\n",rank,petsc_numObjects);
    1241:   PetscMallocGetMaximumUsage(&maxMem);
    1242:   PetscViewerASCIISynchronizedPrintf(viewer,"LocalMemory[%d] = %g\n",rank,maxMem);
    1243:   PetscViewerFlush(viewer);
    1244:   for (stage=0; stage<numStages; stage++) {
    1245:     PetscViewerASCIISynchronizedPrintf(viewer,"Stages[\"%s\"][\"summary\"][%d] = {\"time\" : %g, \"numMessages\" : %g, \"messageLength\" : %g, \"numReductions\" : %g, \"flops\" : %g}\n",
    1246:                                               stageLog->stageInfo[stage].name,rank,
    1247:                                               stageLog->stageInfo[stage].perfInfo.time,stageLog->stageInfo[stage].perfInfo.numMessages,stageLog->stageInfo[stage].perfInfo.messageLength,
    1248:                                               stageLog->stageInfo[stage].perfInfo.numReductions,stageLog->stageInfo[stage].perfInfo.flops);
    1249:     MPIU_Allreduce(&stageLog->stageInfo[stage].eventLog->numEvents, &numEvents, 1, MPI_INT, MPI_MAX, comm);
    1250:     for (event = 0; event < numEvents; event++) {
    1251:       eventInfo = stageLog->stageInfo[stage].eventLog->eventInfo;
    1252:       PetscViewerASCIISynchronizedPrintf(viewer,"Stages[\"%s\"][\"%s\"][%d] = {\"count\" : %D, \"time\" : %g, \"numMessages\" : %g, \"messageLength\" : %g, \"numReductions\" : %g, \"flops\" : %g}\n",stageLog->stageInfo[stage].name,stageLog->eventLog->eventInfo[event].name,rank,
    1253:                                                 eventInfo[event].count, eventInfo[event].time,eventInfo[event].numMessages, eventInfo[event].messageLength,
    1254:                                                 eventInfo[event].numReductions,eventInfo[event].flops);
    1255:     }
    1256:   }
    1257:   PetscViewerFlush(viewer);
    1258:   PetscViewerASCIIPopSynchronized(viewer);
    1259:   return(0);
    1260: }

    1264: PetscErrorCode  PetscLogView_Default(PetscViewer viewer)
    1265: {
    1266:   FILE               *fd;
    1267:   PetscLogDouble     zero       = 0.0;
    1268:   PetscStageLog      stageLog;
    1269:   PetscStageInfo     *stageInfo = NULL;
    1270:   PetscEventPerfInfo *eventInfo = NULL;
    1271:   PetscClassPerfInfo *classInfo;
    1272:   char               arch[128],hostname[128],username[128],pname[PETSC_MAX_PATH_LEN],date[128];
    1273:   const char         *name;
    1274:   PetscLogDouble     locTotalTime, TotalTime, TotalFlops;
    1275:   PetscLogDouble     numMessages, messageLength, avgMessLen, numReductions;
    1276:   PetscLogDouble     stageTime, flops, flopr, mem, mess, messLen, red;
    1277:   PetscLogDouble     fracTime, fracFlops, fracMessages, fracLength, fracReductions, fracMess, fracMessLen, fracRed;
    1278:   PetscLogDouble     fracStageTime, fracStageFlops, fracStageMess, fracStageMessLen, fracStageRed;
    1279:   PetscLogDouble     min, max, tot, ratio, avg, x, y;
    1280:   PetscLogDouble     minf, maxf, totf, ratf, mint, maxt, tott, ratt, ratCt, totm, totml, totr;
    1281:   PetscMPIInt        minCt, maxCt;
    1282:   PetscMPIInt        size, rank;
    1283:   PetscBool          *localStageUsed,    *stageUsed;
    1284:   PetscBool          *localStageVisible, *stageVisible;
    1285:   int                numStages, localNumEvents, numEvents;
    1286:   int                stage, oclass;
    1287:   PetscLogEvent      event;
    1288:   PetscErrorCode     ierr;
    1289:   char               version[256];
    1290:   MPI_Comm           comm;

    1293:   PetscObjectGetComm((PetscObject)viewer,&comm);
    1294:   PetscViewerASCIIGetPointer(viewer,&fd);
    1295:   MPI_Comm_size(comm, &size);
    1296:   MPI_Comm_rank(comm, &rank);
    1297:   /* Get the total elapsed time */
    1298:   PetscTime(&locTotalTime);  locTotalTime -= petsc_BaseTime;

    1300:   PetscFPrintf(comm, fd, "************************************************************************************************************************\n");
    1301:   PetscFPrintf(comm, fd, "***             WIDEN YOUR WINDOW TO 120 CHARACTERS.  Use 'enscript -r -fCourier9' to print this document            ***\n");
    1302:   PetscFPrintf(comm, fd, "************************************************************************************************************************\n");
    1303:   PetscFPrintf(comm, fd, "\n---------------------------------------------- PETSc Performance Summary: ----------------------------------------------\n\n");
    1304:   PetscGetArchType(arch,sizeof(arch));
    1305:   PetscGetHostName(hostname,sizeof(hostname));
    1306:   PetscGetUserName(username,sizeof(username));
    1307:   PetscGetProgramName(pname,sizeof(pname));
    1308:   PetscGetDate(date,sizeof(date));
    1309:   PetscGetVersion(version,sizeof(version));
    1310:   if (size == 1) {
    1311:     PetscFPrintf(comm,fd,"%s on a %s named %s with %d processor, by %s %s\n", pname, arch, hostname, size, username, date);
    1312:   } else {
    1313:     PetscFPrintf(comm,fd,"%s on a %s named %s with %d processors, by %s %s\n", pname, arch, hostname, size, username, date);
    1314:   }

    1316:   PetscFPrintf(comm, fd, "Using %s\n", version);

    1318:   /* Must preserve reduction count before we go on */
    1319:   red = petsc_allreduce_ct + petsc_gather_ct + petsc_scatter_ct;

    1321:   /* Calculate summary information */
    1322:   PetscFPrintf(comm, fd, "\n                         Max       Max/Min        Avg      Total \n");
    1323:   /*   Time */
    1324:   MPIU_Allreduce(&locTotalTime, &min, 1, MPIU_PETSCLOGDOUBLE, MPI_MIN, comm);
    1325:   MPIU_Allreduce(&locTotalTime, &max, 1, MPIU_PETSCLOGDOUBLE, MPI_MAX, comm);
    1326:   MPIU_Allreduce(&locTotalTime, &tot, 1, MPIU_PETSCLOGDOUBLE, MPI_SUM, comm);
    1327:   avg  = (tot)/((PetscLogDouble) size);
    1328:   if (min != 0.0) ratio = max/min;
    1329:   else ratio = 0.0;
    1330:   PetscFPrintf(comm, fd, "Time (sec):           %5.3e   %10.5f   %5.3e\n", max, ratio, avg);
    1331:   TotalTime = tot;
    1332:   /*   Objects */
    1333:   avg  = (PetscLogDouble) petsc_numObjects;
    1334:   MPIU_Allreduce(&avg,          &min, 1, MPIU_PETSCLOGDOUBLE, MPI_MIN, comm);
    1335:   MPIU_Allreduce(&avg,          &max, 1, MPIU_PETSCLOGDOUBLE, MPI_MAX, comm);
    1336:   MPIU_Allreduce(&avg,          &tot, 1, MPIU_PETSCLOGDOUBLE, MPI_SUM, comm);
    1337:   avg  = (tot)/((PetscLogDouble) size);
    1338:   if (min != 0.0) ratio = max/min;
    1339:   else ratio = 0.0;
    1340:   PetscFPrintf(comm, fd, "Objects:              %5.3e   %10.5f   %5.3e\n", max, ratio, avg);
    1341:   /*   Flops */
    1342:   MPIU_Allreduce(&petsc_TotalFlops,  &min, 1, MPIU_PETSCLOGDOUBLE, MPI_MIN, comm);
    1343:   MPIU_Allreduce(&petsc_TotalFlops,  &max, 1, MPIU_PETSCLOGDOUBLE, MPI_MAX, comm);
    1344:   MPIU_Allreduce(&petsc_TotalFlops,  &tot, 1, MPIU_PETSCLOGDOUBLE, MPI_SUM, comm);
    1345:   avg  = (tot)/((PetscLogDouble) size);
    1346:   if (min != 0.0) ratio = max/min;
    1347:   else ratio = 0.0;
    1348:   PetscFPrintf(comm, fd, "Flops:                %5.3e   %10.5f   %5.3e  %5.3e\n", max, ratio, avg, tot);
    1349:   TotalFlops = tot;
    1350:   /*   Flops/sec -- Must talk to Barry here */
    1351:   if (locTotalTime != 0.0) flops = petsc_TotalFlops/locTotalTime;
    1352:   else flops = 0.0;
    1353:   MPIU_Allreduce(&flops,        &min, 1, MPIU_PETSCLOGDOUBLE, MPI_MIN, comm);
    1354:   MPIU_Allreduce(&flops,        &max, 1, MPIU_PETSCLOGDOUBLE, MPI_MAX, comm);
    1355:   MPIU_Allreduce(&flops,        &tot, 1, MPIU_PETSCLOGDOUBLE, MPI_SUM, comm);
    1356:   avg  = (tot)/((PetscLogDouble) size);
    1357:   if (min != 0.0) ratio = max/min;
    1358:   else ratio = 0.0;
    1359:   PetscFPrintf(comm, fd, "Flops/sec:            %5.3e   %10.5f   %5.3e  %5.3e\n", max, ratio, avg, tot);
    1360:   /*   Memory */
    1361:   PetscMallocGetMaximumUsage(&mem);
    1362:   if (mem > 0.0) {
    1363:     MPIU_Allreduce(&mem,          &max, 1, MPIU_PETSCLOGDOUBLE, MPI_MAX, comm);
    1364:     MPIU_Allreduce(&mem,          &min, 1, MPIU_PETSCLOGDOUBLE, MPI_MIN, comm);
    1365:     MPIU_Allreduce(&mem,          &tot, 1, MPIU_PETSCLOGDOUBLE, MPI_SUM, comm);
    1366:     avg  = (tot)/((PetscLogDouble) size);
    1367:     if (min != 0.0) ratio = max/min;
    1368:     else ratio = 0.0;
    1369:     PetscFPrintf(comm, fd, "Memory:               %5.3e   %10.5f              %5.3e\n", max, ratio, tot);
    1370:   }
    1371:   /*   Messages */
    1372:   mess = 0.5*(petsc_irecv_ct + petsc_isend_ct + petsc_recv_ct + petsc_send_ct);
    1373:   MPIU_Allreduce(&mess,         &min, 1, MPIU_PETSCLOGDOUBLE, MPI_MIN, comm);
    1374:   MPIU_Allreduce(&mess,         &max, 1, MPIU_PETSCLOGDOUBLE, MPI_MAX, comm);
    1375:   MPIU_Allreduce(&mess,         &tot, 1, MPIU_PETSCLOGDOUBLE, MPI_SUM, comm);
    1376:   avg  = (tot)/((PetscLogDouble) size);
    1377:   if (min != 0.0) ratio = max/min;
    1378:   else ratio = 0.0;
    1379:   PetscFPrintf(comm, fd, "MPI Messages:         %5.3e   %10.5f   %5.3e  %5.3e\n", max, ratio, avg, tot);
    1380:   numMessages = tot;
    1381:   /*   Message Lengths */
    1382:   mess = 0.5*(petsc_irecv_len + petsc_isend_len + petsc_recv_len + petsc_send_len);
    1383:   MPIU_Allreduce(&mess,         &min, 1, MPIU_PETSCLOGDOUBLE, MPI_MIN, comm);
    1384:   MPIU_Allreduce(&mess,         &max, 1, MPIU_PETSCLOGDOUBLE, MPI_MAX, comm);
    1385:   MPIU_Allreduce(&mess,         &tot, 1, MPIU_PETSCLOGDOUBLE, MPI_SUM, comm);
    1386:   if (numMessages != 0) avg = (tot)/(numMessages);
    1387:   else avg = 0.0;
    1388:   if (min != 0.0) ratio = max/min;
    1389:   else ratio = 0.0;
    1390:   PetscFPrintf(comm, fd, "MPI Message Lengths:  %5.3e   %10.5f   %5.3e  %5.3e\n", max, ratio, avg, tot);
    1391:   messageLength = tot;
    1392:   /*   Reductions */
    1393:   MPIU_Allreduce(&red,          &min, 1, MPIU_PETSCLOGDOUBLE, MPI_MIN, comm);
    1394:   MPIU_Allreduce(&red,          &max, 1, MPIU_PETSCLOGDOUBLE, MPI_MAX, comm);
    1395:   MPIU_Allreduce(&red,          &tot, 1, MPIU_PETSCLOGDOUBLE, MPI_SUM, comm);
    1396:   if (min != 0.0) ratio = max/min;
    1397:   else ratio = 0.0;
    1398:   PetscFPrintf(comm, fd, "MPI Reductions:       %5.3e   %10.5f\n", max, ratio);
    1399:   numReductions = red; /* wrong because uses count from process zero */
    1400:   PetscFPrintf(comm, fd, "\nFlop counting convention: 1 flop = 1 real number operation of type (multiply/divide/add/subtract)\n");
    1401:   PetscFPrintf(comm, fd, "                            e.g., VecAXPY() for real vectors of length N --> 2N flops\n");
    1402:   PetscFPrintf(comm, fd, "                            and VecAXPY() for complex vectors of length N --> 8N flops\n");

    1404:   /* Get total number of stages --
    1405:        Currently, a single processor can register more stages than another, but stages must all be registered in order.
    1406:        We can removed this requirement if necessary by having a global stage numbering and indirection on the stage ID.
    1407:        This seems best accomplished by assoicating a communicator with each stage.
    1408:   */
    1409:   PetscLogGetStageLog(&stageLog);
    1410:   MPIU_Allreduce(&stageLog->numStages, &numStages, 1, MPI_INT, MPI_MAX, comm);
    1411:   PetscMalloc1(numStages, &localStageUsed);
    1412:   PetscMalloc1(numStages, &stageUsed);
    1413:   PetscMalloc1(numStages, &localStageVisible);
    1414:   PetscMalloc1(numStages, &stageVisible);
    1415:   if (numStages > 0) {
    1416:     stageInfo = stageLog->stageInfo;
    1417:     for (stage = 0; stage < numStages; stage++) {
    1418:       if (stage < stageLog->numStages) {
    1419:         localStageUsed[stage]    = stageInfo[stage].used;
    1420:         localStageVisible[stage] = stageInfo[stage].perfInfo.visible;
    1421:       } else {
    1422:         localStageUsed[stage]    = PETSC_FALSE;
    1423:         localStageVisible[stage] = PETSC_TRUE;
    1424:       }
    1425:     }
    1426:     MPIU_Allreduce(localStageUsed,    stageUsed,    numStages, MPIU_BOOL, MPI_LOR,  comm);
    1427:     MPIU_Allreduce(localStageVisible, stageVisible, numStages, MPIU_BOOL, MPI_LAND, comm);
    1428:     for (stage = 0; stage < numStages; stage++) {
    1429:       if (stageUsed[stage]) {
    1430:         PetscFPrintf(comm, fd, "\nSummary of Stages:   ----- Time ------  ----- Flops -----  --- Messages ---  -- Message Lengths --  -- Reductions --\n");
    1431:         PetscFPrintf(comm, fd, "                        Avg     %%Total     Avg     %%Total   counts   %%Total     Avg         %%Total   counts   %%Total \n");
    1432:         break;
    1433:       }
    1434:     }
    1435:     for (stage = 0; stage < numStages; stage++) {
    1436:       if (!stageUsed[stage]) continue;
    1437:       if (localStageUsed[stage]) {
    1438:         MPIU_Allreduce(&stageInfo[stage].perfInfo.time,          &stageTime, 1, MPIU_PETSCLOGDOUBLE, MPI_SUM, comm);
    1439:         MPIU_Allreduce(&stageInfo[stage].perfInfo.flops,         &flops,     1, MPIU_PETSCLOGDOUBLE, MPI_SUM, comm);
    1440:         MPIU_Allreduce(&stageInfo[stage].perfInfo.numMessages,   &mess,      1, MPIU_PETSCLOGDOUBLE, MPI_SUM, comm);
    1441:         MPIU_Allreduce(&stageInfo[stage].perfInfo.messageLength, &messLen,   1, MPIU_PETSCLOGDOUBLE, MPI_SUM, comm);
    1442:         MPIU_Allreduce(&stageInfo[stage].perfInfo.numReductions, &red,       1, MPIU_PETSCLOGDOUBLE, MPI_SUM, comm);
    1443:         name = stageInfo[stage].name;
    1444:       } else {
    1445:         MPIU_Allreduce(&zero,                           &stageTime, 1, MPIU_PETSCLOGDOUBLE, MPI_SUM, comm);
    1446:         MPIU_Allreduce(&zero,                           &flops,     1, MPIU_PETSCLOGDOUBLE, MPI_SUM, comm);
    1447:         MPIU_Allreduce(&zero,                           &mess,      1, MPIU_PETSCLOGDOUBLE, MPI_SUM, comm);
    1448:         MPIU_Allreduce(&zero,                           &messLen,   1, MPIU_PETSCLOGDOUBLE, MPI_SUM, comm);
    1449:         MPIU_Allreduce(&zero,                           &red,       1, MPIU_PETSCLOGDOUBLE, MPI_SUM, comm);
    1450:         name = "";
    1451:       }
    1452:       mess *= 0.5; messLen *= 0.5; red /= size;
    1453:       if (TotalTime     != 0.0) fracTime       = stageTime/TotalTime;    else fracTime       = 0.0;
    1454:       if (TotalFlops    != 0.0) fracFlops      = flops/TotalFlops;       else fracFlops      = 0.0;
    1455:       /* Talk to Barry if (stageTime     != 0.0) flops          = (size*flops)/stageTime; else flops          = 0.0; */
    1456:       if (numMessages   != 0.0) fracMessages   = mess/numMessages;       else fracMessages   = 0.0;
    1457:       if (numMessages   != 0.0) avgMessLen     = messLen/numMessages;    else avgMessLen     = 0.0;
    1458:       if (messageLength != 0.0) fracLength     = messLen/messageLength;  else fracLength     = 0.0;
    1459:       if (numReductions != 0.0) fracReductions = red/numReductions;      else fracReductions = 0.0;
    1460:       PetscFPrintf(comm, fd, "%2d: %15s: %6.4e %5.1f%%  %6.4e %5.1f%%  %5.3e %5.1f%%  %5.3e      %5.1f%%  %5.3e %5.1f%% \n",
    1461:                           stage, name, stageTime/size, 100.0*fracTime, flops, 100.0*fracFlops,
    1462:                           mess, 100.0*fracMessages, avgMessLen, 100.0*fracLength, red, 100.0*fracReductions);
    1463:     }
    1464:   }

    1466:   PetscFPrintf(comm, fd,"\n------------------------------------------------------------------------------------------------------------------------\n");
    1467:   PetscFPrintf(comm, fd, "See the 'Profiling' chapter of the users' manual for details on interpreting output.\n");
    1468:   PetscFPrintf(comm, fd, "Phase summary info:\n");
    1469:   PetscFPrintf(comm, fd, "   Count: number of times phase was executed\n");
    1470:   PetscFPrintf(comm, fd, "   Time and Flops: Max - maximum over all processors\n");
    1471:   PetscFPrintf(comm, fd, "                   Ratio - ratio of maximum to minimum over all processors\n");
    1472:   PetscFPrintf(comm, fd, "   Mess: number of messages sent\n");
    1473:   PetscFPrintf(comm, fd, "   Avg. len: average message length (bytes)\n");
    1474:   PetscFPrintf(comm, fd, "   Reduct: number of global reductions\n");
    1475:   PetscFPrintf(comm, fd, "   Global: entire computation\n");
    1476:   PetscFPrintf(comm, fd, "   Stage: stages of a computation. Set stages with PetscLogStagePush() and PetscLogStagePop().\n");
    1477:   PetscFPrintf(comm, fd, "      %%T - percent time in this phase         %%F - percent flops in this phase\n");
    1478:   PetscFPrintf(comm, fd, "      %%M - percent messages in this phase     %%L - percent message lengths in this phase\n");
    1479:   PetscFPrintf(comm, fd, "      %%R - percent reductions in this phase\n");
    1480:   PetscFPrintf(comm, fd, "   Total Mflop/s: 10e-6 * (sum of flops over all processors)/(max time over all processors)\n");
    1481:   PetscFPrintf(comm, fd, "------------------------------------------------------------------------------------------------------------------------\n");

    1483: #if defined(PETSC_USE_DEBUG)
    1484:   PetscFPrintf(comm, fd, "\n\n");
    1485:   PetscFPrintf(comm, fd, "      ##########################################################\n");
    1486:   PetscFPrintf(comm, fd, "      #                                                        #\n");
    1487:   PetscFPrintf(comm, fd, "      #                          WARNING!!!                    #\n");
    1488:   PetscFPrintf(comm, fd, "      #                                                        #\n");
    1489:   PetscFPrintf(comm, fd, "      #   This code was compiled with a debugging option,      #\n");
    1490:   PetscFPrintf(comm, fd, "      #   To get timing results run ./configure                #\n");
    1491:   PetscFPrintf(comm, fd, "      #   using --with-debugging=no, the performance will      #\n");
    1492:   PetscFPrintf(comm, fd, "      #   be generally two or three times faster.              #\n");
    1493:   PetscFPrintf(comm, fd, "      #                                                        #\n");
    1494:   PetscFPrintf(comm, fd, "      ##########################################################\n\n\n");
    1495: #endif
    1496: #if defined(PETSC_USE_COMPLEX) && !defined(PETSC_USE_FORTRAN_KERNELS)
    1497:   PetscFPrintf(comm, fd, "\n\n");
    1498:   PetscFPrintf(comm, fd, "      ##########################################################\n");
    1499:   PetscFPrintf(comm, fd, "      #                                                        #\n");
    1500:   PetscFPrintf(comm, fd, "      #                          WARNING!!!                    #\n");
    1501:   PetscFPrintf(comm, fd, "      #                                                        #\n");
    1502:   PetscFPrintf(comm, fd, "      #   The code for various complex numbers numerical       #\n");
    1503:   PetscFPrintf(comm, fd, "      #   kernels uses C++, which generally is not well        #\n");
    1504:   PetscFPrintf(comm, fd, "      #   optimized.  For performance that is about 4-5 times  #\n");
    1505:   PetscFPrintf(comm, fd, "      #   faster, specify --with-fortran-kernels=1             #\n");
    1506:   PetscFPrintf(comm, fd, "      #   when running ./configure.py.                         #\n");
    1507:   PetscFPrintf(comm, fd, "      #                                                        #\n");
    1508:   PetscFPrintf(comm, fd, "      ##########################################################\n\n\n");
    1509: #endif

    1511:   /* Report events */
    1512:   PetscFPrintf(comm, fd,"Event                Count      Time (sec)     Flops                             --- Global ---  --- Stage ---   Total\n");
    1513:   PetscFPrintf(comm, fd,"                   Max Ratio  Max     Ratio   Max  Ratio  Mess   Avg len Reduct  %%T %%F %%M %%L %%R  %%T %%F %%M %%L %%R Mflop/s\n");
    1514:   PetscFPrintf(comm,fd,"------------------------------------------------------------------------------------------------------------------------\n");

    1516:   /* Problem: The stage name will not show up unless the stage executed on proc 1 */
    1517:   for (stage = 0; stage < numStages; stage++) {
    1518:     if (!stageVisible[stage]) continue;
    1519:     if (localStageUsed[stage]) {
    1520:       PetscFPrintf(comm, fd, "\n--- Event Stage %d: %s\n\n", stage, stageInfo[stage].name);
    1521:       MPIU_Allreduce(&stageInfo[stage].perfInfo.time,          &stageTime, 1, MPIU_PETSCLOGDOUBLE, MPI_SUM, comm);
    1522:       MPIU_Allreduce(&stageInfo[stage].perfInfo.flops,         &flops,     1, MPIU_PETSCLOGDOUBLE, MPI_SUM, comm);
    1523:       MPIU_Allreduce(&stageInfo[stage].perfInfo.numMessages,   &mess,      1, MPIU_PETSCLOGDOUBLE, MPI_SUM, comm);
    1524:       MPIU_Allreduce(&stageInfo[stage].perfInfo.messageLength, &messLen,   1, MPIU_PETSCLOGDOUBLE, MPI_SUM, comm);
    1525:       MPIU_Allreduce(&stageInfo[stage].perfInfo.numReductions, &red,       1, MPIU_PETSCLOGDOUBLE, MPI_SUM, comm);
    1526:     } else {
    1527:       PetscFPrintf(comm, fd, "\n--- Event Stage %d: Unknown\n\n", stage);
    1528:       MPIU_Allreduce(&zero,                           &stageTime, 1, MPIU_PETSCLOGDOUBLE, MPI_SUM, comm);
    1529:       MPIU_Allreduce(&zero,                           &flops,     1, MPIU_PETSCLOGDOUBLE, MPI_SUM, comm);
    1530:       MPIU_Allreduce(&zero,                           &mess,      1, MPIU_PETSCLOGDOUBLE, MPI_SUM, comm);
    1531:       MPIU_Allreduce(&zero,                           &messLen,   1, MPIU_PETSCLOGDOUBLE, MPI_SUM, comm);
    1532:       MPIU_Allreduce(&zero,                           &red,       1, MPIU_PETSCLOGDOUBLE, MPI_SUM, comm);
    1533:     }
    1534:     mess *= 0.5; messLen *= 0.5; red /= size;

    1536:     /* Get total number of events in this stage --
    1537:        Currently, a single processor can register more events than another, but events must all be registered in order,
    1538:        just like stages. We can removed this requirement if necessary by having a global event numbering and indirection
    1539:        on the event ID. This seems best accomplished by assoicating a communicator with each stage.

    1541:        Problem: If the event did not happen on proc 1, its name will not be available.
    1542:        Problem: Event visibility is not implemented
    1543:     */
    1544:     if (localStageUsed[stage]) {
    1545:       eventInfo      = stageLog->stageInfo[stage].eventLog->eventInfo;
    1546:       localNumEvents = stageLog->stageInfo[stage].eventLog->numEvents;
    1547:     } else localNumEvents = 0;
    1548:     MPIU_Allreduce(&localNumEvents, &numEvents, 1, MPI_INT, MPI_MAX, comm);
    1549:     for (event = 0; event < numEvents; event++) {
    1550:       if (localStageUsed[stage] && (event < stageLog->stageInfo[stage].eventLog->numEvents) && (eventInfo[event].depth == 0)) {
    1551:         if ((eventInfo[event].count > 0) && (eventInfo[event].time > 0.0)) flopr = eventInfo[event].flops;
    1552:         else flopr = 0.0;

    1554:         MPIU_Allreduce(&flopr,                          &minf,  1, MPIU_PETSCLOGDOUBLE, MPI_MIN, comm);
    1555:         MPIU_Allreduce(&flopr,                          &maxf,  1, MPIU_PETSCLOGDOUBLE, MPI_MAX, comm);
    1556:         MPIU_Allreduce(&eventInfo[event].flops,         &totf,  1, MPIU_PETSCLOGDOUBLE, MPI_SUM, comm);
    1557:         MPIU_Allreduce(&eventInfo[event].time,          &mint,  1, MPIU_PETSCLOGDOUBLE, MPI_MIN, comm);
    1558:         MPIU_Allreduce(&eventInfo[event].time,          &maxt,  1, MPIU_PETSCLOGDOUBLE, MPI_MAX, comm);
    1559:         MPIU_Allreduce(&eventInfo[event].time,          &tott,  1, MPIU_PETSCLOGDOUBLE, MPI_SUM, comm);
    1560:         MPIU_Allreduce(&eventInfo[event].numMessages,   &totm,  1, MPIU_PETSCLOGDOUBLE, MPI_SUM, comm);
    1561:         MPIU_Allreduce(&eventInfo[event].messageLength, &totml, 1, MPIU_PETSCLOGDOUBLE, MPI_SUM, comm);
    1562:         MPIU_Allreduce(&eventInfo[event].numReductions, &totr,  1, MPIU_PETSCLOGDOUBLE, MPI_SUM, comm);
    1563:         MPIU_Allreduce(&eventInfo[event].count,         &minCt, 1, MPI_INT,             MPI_MIN, comm);
    1564:         MPIU_Allreduce(&eventInfo[event].count,         &maxCt, 1, MPI_INT,             MPI_MAX, comm);
    1565:         name = stageLog->eventLog->eventInfo[event].name;
    1566:       } else {
    1567:         flopr = 0.0;
    1568:         MPIU_Allreduce(&flopr,                          &minf,  1, MPIU_PETSCLOGDOUBLE, MPI_MIN, comm);
    1569:         MPIU_Allreduce(&flopr,                          &maxf,  1, MPIU_PETSCLOGDOUBLE, MPI_MAX, comm);
    1570:         MPIU_Allreduce(&zero,                           &totf,  1, MPIU_PETSCLOGDOUBLE, MPI_SUM, comm);
    1571:         MPIU_Allreduce(&zero,                           &mint,  1, MPIU_PETSCLOGDOUBLE, MPI_MIN, comm);
    1572:         MPIU_Allreduce(&zero,                           &maxt,  1, MPIU_PETSCLOGDOUBLE, MPI_MAX, comm);
    1573:         MPIU_Allreduce(&zero,                           &tott,  1, MPIU_PETSCLOGDOUBLE, MPI_SUM, comm);
    1574:         MPIU_Allreduce(&zero,                           &totm,  1, MPIU_PETSCLOGDOUBLE, MPI_SUM, comm);
    1575:         MPIU_Allreduce(&zero,                           &totml, 1, MPIU_PETSCLOGDOUBLE, MPI_SUM, comm);
    1576:         MPIU_Allreduce(&zero,                           &totr,  1, MPIU_PETSCLOGDOUBLE, MPI_SUM, comm);
    1577:         MPIU_Allreduce(&ierr,                           &minCt, 1, MPI_INT,             MPI_MIN, comm);
    1578:         MPIU_Allreduce(&ierr,                           &maxCt, 1, MPI_INT,             MPI_MAX, comm);
    1579:         name  = "";
    1580:       }
    1581:       if (mint < 0.0) {
    1582:         PetscFPrintf(comm, fd, "WARNING!!! Minimum time %g over all processors for %s is negative! This happens\n on some machines whose times cannot handle too rapid calls.!\n artificially changing minimum to zero.\n",mint,name);
    1583:         mint = 0;
    1584:       }
    1585:       if (minf < 0.0) SETERRQ2(PETSC_COMM_SELF,PETSC_ERR_PLIB,"Minimum flops %g over all processors for %s is negative! Not possible!",minf,name);
    1586:       totm *= 0.5; totml *= 0.5; totr /= size;

    1588:       if (maxCt != 0) {
    1589:         if (minCt         != 0)   ratCt            = ((PetscLogDouble) maxCt)/minCt; else ratCt            = 0.0;
    1590:         if (mint          != 0.0) ratt             = maxt/mint;                  else ratt             = 0.0;
    1591:         if (minf          != 0.0) ratf             = maxf/minf;                  else ratf             = 0.0;
    1592:         if (TotalTime     != 0.0) fracTime         = tott/TotalTime;             else fracTime         = 0.0;
    1593:         if (TotalFlops    != 0.0) fracFlops        = totf/TotalFlops;            else fracFlops        = 0.0;
    1594:         if (stageTime     != 0.0) fracStageTime    = tott/stageTime;             else fracStageTime    = 0.0;
    1595:         if (flops         != 0.0) fracStageFlops   = totf/flops;                 else fracStageFlops   = 0.0;
    1596:         if (numMessages   != 0.0) fracMess         = totm/numMessages;           else fracMess         = 0.0;
    1597:         if (messageLength != 0.0) fracMessLen      = totml/messageLength;        else fracMessLen      = 0.0;
    1598:         if (numReductions != 0.0) fracRed          = totr/numReductions;         else fracRed          = 0.0;
    1599:         if (mess          != 0.0) fracStageMess    = totm/mess;                  else fracStageMess    = 0.0;
    1600:         if (messLen       != 0.0) fracStageMessLen = totml/messLen;              else fracStageMessLen = 0.0;
    1601:         if (red           != 0.0) fracStageRed     = totr/red;                   else fracStageRed     = 0.0;
    1602:         if (totm          != 0.0) totml           /= totm;                       else totml            = 0.0;
    1603:         if (maxt          != 0.0) flopr            = totf/maxt;                  else flopr            = 0.0;
    1604:         if (fracStageTime > 1.00)  PetscFPrintf(comm, fd,"Warning -- total time of event greater than time of entire stage -- something is wrong with the timer\n");
    1605:         PetscFPrintf(comm, fd,
    1606:           "%-16s %7d%4.1f %5.4e%4.1f %3.2e%4.1f %2.1e %2.1e %2.1e%3.0f%3.0f%3.0f%3.0f%3.0f %3.0f%3.0f%3.0f%3.0f%3.0f %5.0f\n",
    1607:                             name, maxCt, ratCt, maxt, ratt, maxf, ratf, totm, totml, totr,
    1608:                             100.0*fracTime, 100.0*fracFlops, 100.0*fracMess, 100.0*fracMessLen, 100.0*fracRed,
    1609:                             100.0*fracStageTime, 100.0*fracStageFlops, 100.0*fracStageMess, 100.0*fracStageMessLen, 100.0*fracStageRed,
    1610:                             PetscAbsReal(flopr/1.0e6));
    1611:       }
    1612:     }
    1613:   }

    1615:   /* Memory usage and object creation */
    1616:   PetscFPrintf(comm, fd, "------------------------------------------------------------------------------------------------------------------------\n");
    1617:   PetscFPrintf(comm, fd, "\n");
    1618:   PetscFPrintf(comm, fd, "Memory usage is given in bytes:\n\n");

    1620:   /* Right now, only stages on the first processor are reported here, meaning only objects associated with
    1621:      the global communicator, or MPI_COMM_SELF for proc 1. We really should report global stats and then
    1622:      stats for stages local to processor sets.
    1623:   */
    1624:   /* We should figure out the longest object name here (now 20 characters) */
    1625:   PetscFPrintf(comm, fd, "Object Type          Creations   Destructions     Memory  Descendants' Mem.\n");
    1626:   PetscFPrintf(comm, fd, "Reports information only for process 0.\n");
    1627:   for (stage = 0; stage < numStages; stage++) {
    1628:     if (localStageUsed[stage]) {
    1629:       classInfo = stageLog->stageInfo[stage].classLog->classInfo;
    1630:       PetscFPrintf(comm, fd, "\n--- Event Stage %d: %s\n\n", stage, stageInfo[stage].name);
    1631:       for (oclass = 0; oclass < stageLog->stageInfo[stage].classLog->numClasses; oclass++) {
    1632:         if ((classInfo[oclass].creations > 0) || (classInfo[oclass].destructions > 0)) {
    1633:           PetscFPrintf(comm, fd, "%20s %5d          %5d  %11.0f     %g\n", stageLog->classLog->classInfo[oclass].name,
    1634:                               classInfo[oclass].creations, classInfo[oclass].destructions, classInfo[oclass].mem,
    1635:                               classInfo[oclass].descMem);
    1636:         }
    1637:       }
    1638:     } else {
    1639:       PetscFPrintf(comm, fd, "\n--- Event Stage %d: Unknown\n\n", stage);
    1640:     }
    1641:   }

    1643:   PetscFree(localStageUsed);
    1644:   PetscFree(stageUsed);
    1645:   PetscFree(localStageVisible);
    1646:   PetscFree(stageVisible);

    1648:   /* Information unrelated to this particular run */
    1649:   PetscFPrintf(comm, fd, "========================================================================================================================\n");
    1650:   PetscTime(&y);
    1651:   PetscTime(&x);
    1652:   PetscTime(&y); PetscTime(&y); PetscTime(&y); PetscTime(&y); PetscTime(&y);
    1653:   PetscTime(&y); PetscTime(&y); PetscTime(&y); PetscTime(&y); PetscTime(&y);
    1654:   PetscFPrintf(comm,fd,"Average time to get PetscTime(): %g\n", (y-x)/10.0);
    1655:   /* MPI information */
    1656:   if (size > 1) {
    1657:     MPI_Status  status;
    1658:     PetscMPIInt tag;
    1659:     MPI_Comm    newcomm;

    1661:     MPI_Barrier(comm);
    1662:     PetscTime(&x);
    1663:     MPI_Barrier(comm);
    1664:     MPI_Barrier(comm);
    1665:     MPI_Barrier(comm);
    1666:     MPI_Barrier(comm);
    1667:     MPI_Barrier(comm);
    1668:     PetscTime(&y);
    1669:     PetscFPrintf(comm, fd, "Average time for MPI_Barrier(): %g\n", (y-x)/5.0);
    1670:     PetscCommDuplicate(comm,&newcomm, &tag);
    1671:     MPI_Barrier(comm);
    1672:     if (rank) {
    1673:       MPI_Recv(0, 0, MPI_INT, rank-1,            tag, newcomm, &status);
    1674:       MPI_Send(0, 0, MPI_INT, (rank+1)%size, tag, newcomm);
    1675:     } else {
    1676:       PetscTime(&x);
    1677:       MPI_Send(0, 0, MPI_INT, 1,          tag, newcomm);
    1678:       MPI_Recv(0, 0, MPI_INT, size-1, tag, newcomm, &status);
    1679:       PetscTime(&y);
    1680:       PetscFPrintf(comm,fd,"Average time for zero size MPI_Send(): %g\n", (y-x)/size);
    1681:     }
    1682:     PetscCommDestroy(&newcomm);
    1683:   }
    1684:   PetscOptionsView(NULL,viewer);

    1686:   /* Machine and compile information */
    1687: #if defined(PETSC_USE_FORTRAN_KERNELS)
    1688:   PetscFPrintf(comm, fd, "Compiled with FORTRAN kernels\n");
    1689: #else
    1690:   PetscFPrintf(comm, fd, "Compiled without FORTRAN kernels\n");
    1691: #endif
    1692: #if defined(PETSC_USE_REAL_SINGLE)
    1693:   PetscFPrintf(comm, fd, "Compiled with single precision PetscScalar and PetscReal\n");
    1694: #elif defined(PETSC_USE_LONGDOUBLE)
    1695:   PetscFPrintf(comm, fd, "Compiled with long double precision PetscScalar and PetscReal\n");
    1696: #endif

    1698: #if defined(PETSC_USE_REAL_MAT_SINGLE)
    1699:   PetscFPrintf(comm, fd, "Compiled with single precision matrices\n");
    1700: #else
    1701:   PetscFPrintf(comm, fd, "Compiled with full precision matrices (default)\n");
    1702: #endif
    1703:   PetscFPrintf(comm, fd, "sizeof(short) %d sizeof(int) %d sizeof(long) %d sizeof(void*) %d sizeof(PetscScalar) %d sizeof(PetscInt) %d\n",
    1704:                       (int) sizeof(short), (int) sizeof(int), (int) sizeof(long), (int) sizeof(void*),(int) sizeof(PetscScalar),(int) sizeof(PetscInt));

    1706:   PetscFPrintf(comm, fd, "Configure options: %s",petscconfigureoptions);
    1707:   PetscFPrintf(comm, fd, "%s", petscmachineinfo);
    1708:   PetscFPrintf(comm, fd, "%s", petsccompilerinfo);
    1709:   PetscFPrintf(comm, fd, "%s", petsccompilerflagsinfo);
    1710:   PetscFPrintf(comm, fd, "%s", petsclinkerinfo);

    1712:   /* Cleanup */
    1713:   PetscFPrintf(comm, fd, "\n");
    1714:   return(0);
    1715: }

    1717: PetscErrorCode  PetscLogView_Nested(PetscViewer);

    1721: /*@C
    1722:   PetscLogView - Prints a summary of the logging.

    1724:   Collective over MPI_Comm

    1726:   Input Parameter:
    1727: .  viewer - an ASCII viewer

    1729:   Options Database Keys:
    1730: +  -log_view [:filename] - Prints summary of log information
    1731: .  -log_view :filename.py:ascii_info_detail - Saves logging information from each process as a Python file
    1732: .  -log_view :filename.xml:ascii_xml - Saves a summary of the logging information in a nested format, use a browser to open this file, for example on
    1733:              Apple MacOS systems use open -a Safari filename.xml
    1734: .  -log_all - Saves a file Log.rank for each MPI process with details of each step of the computation
    1735: -  -log_trace [filename] - Displays a trace of what each process is doing

    1737:   Notes:
    1738:   It is possible to control the logging programatically but we recommend using the options database approach whenever possible
    1739:   By default the summary is printed to stdout.

    1741:   Before calling this routine you must have called either PetscLogDefaultBegin() or PetscLogNestedBegin()

    1743:   If PETSc is configured with --with-logging=0 then this functionality is not available

    1745:   The nested XML format was kindly donated by Koos Huijssen and Christiaan M. Klaij  MARITIME  RESEARCH  INSTITUTE  NETHERLANDS

    1747:   Level: beginner

    1749: .keywords: log, dump, print
    1750: .seealso: PetscLogDefaultBegin(), PetscLogDump()
    1751: @*/
    1752: PetscErrorCode  PetscLogView(PetscViewer viewer)
    1753: {
    1754:   PetscErrorCode    ierr;
    1755:   PetscBool         isascii;
    1756:   PetscViewerFormat format;
    1757:   int               stage, lastStage;
    1758:   PetscStageLog     stageLog;

    1761:   if (!PetscLogPLB) SETERRQ(PETSC_COMM_SELF,PETSC_ERR_SUP,"Must use -log_summary or PetscLogDefaultBegin() before calling this routine");
    1762:   /* Pop off any stages the user forgot to remove */
    1763:   lastStage = 0;
    1764:   PetscLogGetStageLog(&stageLog);
    1765:   PetscStageLogGetCurrent(stageLog, &stage);
    1766:   while (stage >= 0) {
    1767:     lastStage = stage;
    1768:     PetscStageLogPop(stageLog);
    1769:     PetscStageLogGetCurrent(stageLog, &stage);
    1770:   }
    1771:   PetscObjectTypeCompare((PetscObject)viewer,PETSCVIEWERASCII,&isascii);
    1772:   if (!isascii) SETERRQ(PetscObjectComm((PetscObject)viewer),PETSC_ERR_SUP,"Currently can only view logging to ASCII");
    1773:   PetscViewerGetFormat(viewer,&format);
    1774:   if (format == PETSC_VIEWER_DEFAULT || format == PETSC_VIEWER_ASCII_INFO) {
    1775:     PetscLogView_Default(viewer);
    1776:   } else if (format == PETSC_VIEWER_ASCII_INFO_DETAIL) {
    1777:     PetscLogView_Detailed(viewer);
    1778:   } else if (format == PETSC_VIEWER_ASCII_XML) {
    1779:     PetscLogView_Nested(viewer);
    1780:   }
    1781:   PetscStageLogPush(stageLog, lastStage);
    1782:   return(0);
    1783: }

    1787: /*@C
    1788:   PetscLogViewFromOptions - Processes command line options to determine if/how a PetscLog is to be viewed.

    1790:   Collective on PETSC_COMM_WORLD

    1792:   Not normally called by user

    1794:   Level: intermediate

    1796: @*/
    1797: PetscErrorCode PetscLogViewFromOptions(void)
    1798: {
    1799:   PetscErrorCode    ierr;
    1800:   PetscViewer       viewer;
    1801:   PetscBool         flg;
    1802:   PetscViewerFormat format;

    1805:   PetscOptionsGetViewer(PETSC_COMM_WORLD,NULL,"-log_view",&viewer,&format,&flg);
    1806:   if (flg) {
    1807:     PetscViewerPushFormat(viewer,format);
    1808:     PetscLogView(viewer);
    1809:     PetscViewerPopFormat(viewer);
    1810:     PetscViewerDestroy(&viewer);
    1811:   }
    1812:   return(0);
    1813: }

    1817: /*----------------------------------------------- Counter Functions -------------------------------------------------*/
    1820: /*@C
    1821:    PetscGetFlops - Returns the number of flops used on this processor
    1822:    since the program began.

    1824:    Not Collective

    1826:    Output Parameter:
    1827:    flops - number of floating point operations

    1829:    Notes:
    1830:    A global counter logs all PETSc flop counts.  The user can use
    1831:    PetscLogFlops() to increment this counter to include flops for the
    1832:    application code.

    1834:    Level: intermediate

    1836: .keywords: log, flops, floating point operations

    1838: .seealso: PetscTime(), PetscLogFlops()
    1839: @*/
    1840: PetscErrorCode  PetscGetFlops(PetscLogDouble *flops)
    1841: {
    1843:   *flops = petsc_TotalFlops;
    1844:   return(0);
    1845: }

    1849: PetscErrorCode  PetscLogObjectState(PetscObject obj, const char format[], ...)
    1850: {
    1852:   size_t         fullLength;
    1853:   va_list        Argp;

    1856:   if (!petsc_logObjects) return(0);
    1857:   va_start(Argp, format);
    1858:   PetscVSNPrintf(petsc_objects[obj->id].info, 64,format,&fullLength, Argp);
    1859:   va_end(Argp);
    1860:   return(0);
    1861: }

    1864: /*MC
    1865:    PetscLogFlops - Adds floating point operations to the global counter.

    1867:    Synopsis:
    1868:    #include <petsclog.h>
    1869:    PetscErrorCode PetscLogFlops(PetscLogDouble f)

    1871:    Not Collective

    1873:    Input Parameter:
    1874: .  f - flop counter

    1877:    Usage:
    1878: .vb
    1879:      PetscLogEvent USER_EVENT;
    1880:      PetscLogEventRegister("User event",0,&USER_EVENT);
    1881:      PetscLogEventBegin(USER_EVENT,0,0,0,0);
    1882:         [code segment to monitor]
    1883:         PetscLogFlops(user_flops)
    1884:      PetscLogEventEnd(USER_EVENT,0,0,0,0);
    1885: .ve

    1887:    Notes:
    1888:    A global counter logs all PETSc flop counts.  The user can use
    1889:    PetscLogFlops() to increment this counter to include flops for the
    1890:    application code.

    1892:    Level: intermediate

    1894: .seealso: PetscLogEventRegister(), PetscLogEventBegin(), PetscLogEventEnd(), PetscGetFlops()

    1896: .keywords: log, flops, floating point operations
    1897: M*/

    1899: /*MC
    1900:    PetscPreLoadBegin - Begin a segment of code that may be preloaded (run twice)
    1901:     to get accurate timings

    1903:    Synopsis:
    1904:    #include <petsclog.h>
    1905:    void PetscPreLoadBegin(PetscBool  flag,char *name);

    1907:    Not Collective

    1909:    Input Parameter:
    1910: +   flag - PETSC_TRUE to run twice, PETSC_FALSE to run once, may be overridden
    1911:            with command line option -preload true or -preload false
    1912: -   name - name of first stage (lines of code timed separately with -log_summary) to
    1913:            be preloaded

    1915:    Usage:
    1916: .vb
    1917:      PetscPreLoadBegin(PETSC_TRUE,"first stage);
    1918:        lines of code
    1919:        PetscPreLoadStage("second stage");
    1920:        lines of code
    1921:      PetscPreLoadEnd();
    1922: .ve

    1924:    Notes: Only works in C/C++, not Fortran

    1926:      Flags available within the macro.
    1927: +    PetscPreLoadingUsed - true if we are or have done preloading
    1928: .    PetscPreLoadingOn - true if it is CURRENTLY doing preload
    1929: .    PetscPreLoadIt - 0 for the first computation (with preloading turned off it is only 0) 1 for the second
    1930: -    PetscPreLoadMax - number of times it will do the computation, only one when preloading is turned on
    1931:      The first two variables are available throughout the program, the second two only between the PetscPreLoadBegin()
    1932:      and PetscPreLoadEnd()

    1934:    Level: intermediate

    1936: .seealso: PetscLogEventRegister(), PetscLogEventBegin(), PetscLogEventEnd(), PetscPreLoadEnd(), PetscPreLoadStage()

    1938:    Concepts: preloading
    1939:    Concepts: timing^accurate
    1940:    Concepts: paging^eliminating effects of

    1943: M*/

    1945: /*MC
    1946:    PetscPreLoadEnd - End a segment of code that may be preloaded (run twice)
    1947:     to get accurate timings

    1949:    Synopsis:
    1950:    #include <petsclog.h>
    1951:    void PetscPreLoadEnd(void);

    1953:    Not Collective

    1955:    Usage:
    1956: .vb
    1957:      PetscPreLoadBegin(PETSC_TRUE,"first stage);
    1958:        lines of code
    1959:        PetscPreLoadStage("second stage");
    1960:        lines of code
    1961:      PetscPreLoadEnd();
    1962: .ve

    1964:    Notes: only works in C/C++ not fortran

    1966:    Level: intermediate

    1968: .seealso: PetscLogEventRegister(), PetscLogEventBegin(), PetscLogEventEnd(), PetscPreLoadBegin(), PetscPreLoadStage()

    1970: M*/

    1972: /*MC
    1973:    PetscPreLoadStage - Start a new segment of code to be timed separately.
    1974:     to get accurate timings

    1976:    Synopsis:
    1977:    #include <petsclog.h>
    1978:    void PetscPreLoadStage(char *name);

    1980:    Not Collective

    1982:    Usage:
    1983: .vb
    1984:      PetscPreLoadBegin(PETSC_TRUE,"first stage);
    1985:        lines of code
    1986:        PetscPreLoadStage("second stage");
    1987:        lines of code
    1988:      PetscPreLoadEnd();
    1989: .ve

    1991:    Notes: only works in C/C++ not fortran

    1993:    Level: intermediate

    1995: .seealso: PetscLogEventRegister(), PetscLogEventBegin(), PetscLogEventEnd(), PetscPreLoadBegin(), PetscPreLoadEnd()

    1997: M*/

    2000: #else /* end of -DPETSC_USE_LOG section */

    2004: PetscErrorCode  PetscLogObjectState(PetscObject obj, const char format[], ...)
    2005: {
    2007:   return(0);
    2008: }

    2010: #endif /* PETSC_USE_LOG*/

    2013: PetscClassId PETSC_LARGEST_CLASSID = PETSC_SMALLEST_CLASSID;
    2014: PetscClassId PETSC_OBJECT_CLASSID  = 0;

    2018: /*@C
    2019:   PetscClassIdRegister - Registers a new class name for objects and logging operations in an application code.

    2021:   Not Collective

    2023:   Input Parameter:
    2024: . name   - The class name

    2026:   Output Parameter:
    2027: . oclass - The class id or classid

    2029:   Level: developer

    2031: .keywords: log, class, register

    2033: @*/
    2034: PetscErrorCode  PetscClassIdRegister(const char name[],PetscClassId *oclass)
    2035: {
    2036: #if defined(PETSC_USE_LOG)
    2037:   PetscStageLog  stageLog;
    2038:   PetscInt       stage;
    2040: #endif

    2043:   *oclass = ++PETSC_LARGEST_CLASSID;
    2044: #if defined(PETSC_USE_LOG)
    2045:   PetscLogGetStageLog(&stageLog);
    2046:   PetscClassRegLogRegister(stageLog->classLog, name, *oclass);
    2047:   for (stage = 0; stage < stageLog->numStages; stage++) {
    2048:     ClassPerfLogEnsureSize(stageLog->stageInfo[stage].classLog, stageLog->classLog->numClasses);
    2049:   }
    2050: #endif
    2051:   return(0);
    2052: }

    2054: #if defined(PETSC_USE_LOG) && defined(PETSC_HAVE_MPE)
    2055: #include <mpe.h>

    2057: PetscBool PetscBeganMPE = PETSC_FALSE;

    2059: PETSC_INTERN PetscErrorCode PetscLogEventBeginMPE(PetscLogEvent,int,PetscObject,PetscObject,PetscObject,PetscObject);
    2060: PETSC_INTERN PetscErrorCode PetscLogEventEndMPE(PetscLogEvent,int,PetscObject,PetscObject,PetscObject,PetscObject);

    2064: /*@C
    2065:    PetscLogMPEBegin - Turns on MPE logging of events. This creates large log files
    2066:    and slows the program down.

    2068:    Collective over PETSC_COMM_WORLD

    2070:    Options Database Keys:
    2071: . -log_mpe - Prints extensive log information

    2073:    Notes:
    2074:    A related routine is PetscLogDefaultBegin() (with the options key -log_summary), which is
    2075:    intended for production runs since it logs only flop rates and object
    2076:    creation (and should not significantly slow the programs).

    2078:    Level: advanced

    2080:    Concepts: logging^MPE
    2081:    Concepts: logging^message passing

    2083: .seealso: PetscLogDump(), PetscLogDefaultBegin(), PetscLogAllBegin(), PetscLogEventActivate(),
    2084:           PetscLogEventDeactivate()
    2085: @*/
    2086: PetscErrorCode  PetscLogMPEBegin(void)
    2087: {

    2091:   /* Do MPE initialization */
    2092:   if (!MPE_Initialized_logging()) { /* This function exists in mpich 1.1.2 and higher */
    2093:     PetscInfo(0,"Initializing MPE.\n");
    2094:     MPE_Init_log();

    2096:     PetscBeganMPE = PETSC_TRUE;
    2097:   } else {
    2098:     PetscInfo(0,"MPE already initialized. Not attempting to reinitialize.\n");
    2099:   }
    2100:   PetscLogSet(PetscLogEventBeginMPE, PetscLogEventEndMPE);
    2101:   return(0);
    2102: }

    2106: /*@C
    2107:    PetscLogMPEDump - Dumps the MPE logging info to file for later use with Jumpshot.

    2109:    Collective over PETSC_COMM_WORLD

    2111:    Level: advanced

    2113: .seealso: PetscLogDump(), PetscLogAllBegin(), PetscLogMPEBegin()
    2114: @*/
    2115: PetscErrorCode  PetscLogMPEDump(const char sname[])
    2116: {
    2117:   char           name[PETSC_MAX_PATH_LEN];

    2121:   if (PetscBeganMPE) {
    2122:     PetscInfo(0,"Finalizing MPE.\n");
    2123:     if (sname) {
    2124:       PetscStrcpy(name,sname);
    2125:     } else {
    2126:       PetscGetProgramName(name,PETSC_MAX_PATH_LEN);
    2127:     }
    2128:     MPE_Finish_log(name);
    2129:   } else {
    2130:     PetscInfo(0,"Not finalizing MPE (not started by PETSc).\n");
    2131:   }
    2132:   return(0);
    2133: }

    2135: #define PETSC_RGB_COLORS_MAX 39
    2136: static const char *PetscLogMPERGBColors[PETSC_RGB_COLORS_MAX] = {
    2137:   "OliveDrab:      ",
    2138:   "BlueViolet:     ",
    2139:   "CadetBlue:      ",
    2140:   "CornflowerBlue: ",
    2141:   "DarkGoldenrod:  ",
    2142:   "DarkGreen:      ",
    2143:   "DarkKhaki:      ",
    2144:   "DarkOliveGreen: ",
    2145:   "DarkOrange:     ",
    2146:   "DarkOrchid:     ",
    2147:   "DarkSeaGreen:   ",
    2148:   "DarkSlateGray:  ",
    2149:   "DarkTurquoise:  ",
    2150:   "DeepPink:       ",
    2151:   "DarkKhaki:      ",
    2152:   "DimGray:        ",
    2153:   "DodgerBlue:     ",
    2154:   "GreenYellow:    ",
    2155:   "HotPink:        ",
    2156:   "IndianRed:      ",
    2157:   "LavenderBlush:  ",
    2158:   "LawnGreen:      ",
    2159:   "LemonChiffon:   ",
    2160:   "LightCoral:     ",
    2161:   "LightCyan:      ",
    2162:   "LightPink:      ",
    2163:   "LightSalmon:    ",
    2164:   "LightSlateGray: ",
    2165:   "LightYellow:    ",
    2166:   "LimeGreen:      ",
    2167:   "MediumPurple:   ",
    2168:   "MediumSeaGreen: ",
    2169:   "MediumSlateBlue:",
    2170:   "MidnightBlue:   ",
    2171:   "MintCream:      ",
    2172:   "MistyRose:      ",
    2173:   "NavajoWhite:    ",
    2174:   "NavyBlue:       ",
    2175:   "OliveDrab:      "
    2176: };

    2180: /*@C
    2181:   PetscLogMPEGetRGBColor - This routine returns a rgb color useable with PetscLogEventRegister()

    2183:   Not collective. Maybe it should be?

    2185:   Output Parameter
    2186: . str - character string representing the color

    2188:   Level: developer

    2190: .keywords: log, mpe , color
    2191: .seealso: PetscLogEventRegister
    2192: @*/
    2193: PetscErrorCode  PetscLogMPEGetRGBColor(const char *str[])
    2194: {
    2195:   static int idx = 0;

    2198:   *str = PetscLogMPERGBColors[idx];
    2199:   idx  = (idx + 1)% PETSC_RGB_COLORS_MAX;
    2200:   return(0);
    2201: }

    2203: #endif /* PETSC_USE_LOG && PETSC_HAVE_MPE */