simgrid::surf::CpuTiTgmr Class Reference

#include <cpu_ti.hpp>

Public Member Functions
	CpuTiTgmr (trace_type type, double value)
	CpuTiTgmr (tmgr_trace_t speedTrace, double value)
	Creates a new integration trace from a tmgr_trace_t. More...
	~CpuTiTgmr ()
double	integrate (double a, double b)
	Integrate trace. More...
double	solve (double a, double amount)
	Computes the time needed to execute "amount" on cpu. More...
double	solveSomewhatSimple (double a, double amount)
	Auxiliary function to solve integral. More...
double	getPowerScale (double a)
	Auxiliary function to update the CPU speed scale. More...

Public Attributes
trace_type	type_
double	value_
double	lastTime_ = 0.0
double	total_ = 0.0
CpuTiTrace *	trace_ = nullptr
tmgr_trace_t	speedTrace_ = nullptr

Constructor & Destructor Documentation

simgrid::surf::CpuTiTgmr::CpuTiTgmr ( trace_type  type, double  value  )

inline

simgrid::surf::CpuTiTgmr::CpuTiTgmr	(	tmgr_trace_t	speedTrace,
		double	value
	)

Creates a new integration trace from a tmgr_trace_t.

Parameters

speedTrace	CPU availability trace
value	Percentage of CPU speed available (useful to fixed tracing)
spacing	Initial spacing

Returns

Integration trace structure

simgrid::surf::CpuTiTgmr::~CpuTiTgmr

(

)

Member Function Documentation

double simgrid::surf::CpuTiTgmr::integrate	(	double	a,
		double	b
	)

Integrate trace.

Wrapper around surf_cpu_integrate_trace_simple() to get the cyclic effect.

Parameters

trace	Trace structure.
a	Begin of interval
b	End of interval

Returns

the integrate value. -1 if an error occurs.

double simgrid::surf::CpuTiTgmr::solve	(	double	a,
		double	amount
	)

Computes the time needed to execute "amount" on cpu.

Here, amount can span multiple trace periods

Parameters

a	Initial time
amount	Amount to be executed

Returns

End time

double simgrid::surf::CpuTiTgmr::solveSomewhatSimple	(	double	a,
		double	amount
	)

Auxiliary function to solve integral.

Here, amount is <= trace->total and a <=trace->last_time

double simgrid::surf::CpuTiTgmr::getPowerScale

(

double

a

)

Auxiliary function to update the CPU speed scale.

This function uses the trace structure to return the speed scale at the determined time a.

Parameters

trace	Trace structure to search the updated speed scale
a	Time

Returns

CPU speed scale

Member Data Documentation

trace_type simgrid::surf::CpuTiTgmr::type_

double simgrid::surf::CpuTiTgmr::value_

double simgrid::surf::CpuTiTgmr::lastTime_ = 0.0

double simgrid::surf::CpuTiTgmr::total_ = 0.0

CpuTiTrace* simgrid::surf::CpuTiTgmr::trace_ = nullptr

tmgr_trace_t simgrid::surf::CpuTiTgmr::speedTrace_ = nullptr

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The documentation for this class was generated from the following files:

• src/surf/cpu_ti.hpp
• src/surf/cpu_ti.cpp