petsc-3.7.3 2016-07-24
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## KSP solving a linear system

- ex30.c Reads a PETSc matrix and vector from a file and solves a linear system.
  It is copied and intended to move dirty codes from ksp/examples/tutorials/ex10.c and simplify ex10.c.
  Input parameters include
  -f0 <input_file> : first file to load (small system)
  -f1 <input_file> : second file to load (larger system)
  -trans : solve transpose system instead