PetscGetCPUTime

Returns the CPU time in seconds used by the process.

Synopsis

#include "petsc.h" 
int PetscGetCPUTime(PetscLogDouble *t)

Not Collective

Output Parameter

t -Time in seconds charged to the process.

Example

    #include "petsc.h"
    ...
    PetscLogDouble t1, t2;
 
    ierr = PetscGetCPUTime(&t1);CHKERRQ(ierr);
    ... code to time ...
    ierr = PetscGetCPUTime(&t2);CHKERRQ(ierr);
    printf("Code took %f CPU seconds\n", t2-t1);

Notes

One should use PetscGetTime() or the -log_summary option of PETSc for profiling. The CPU time is NOT a realistic number to use since it does not include the time for message passing etc. Also on many systems the accuracy is only on the order of microseconds.

Level:intermediate
Location:src/sys/src/time/cputime.c
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