PetscGetCPUTime#
Returns the CPU time in seconds used by the process.
Synopsis#
#include "petscsys.h"
#include "petsctime.h"
PetscErrorCode PetscGetCPUTime(PetscLogDouble *t)
Not Collective
Output Parameter#
t - Time in seconds charged to the process.
Example#
#include <petscsys.h>
...
PetscLogDouble t1, t2;
PetscCall(PetscGetCPUTime(&t1));
... code to time ...
PetscCall(PetscGetCPUTime(&t2));
printf("Code took %f CPU seconds\n", t2-t1);
Note#
One should use the -log_view 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.
See Also#
PetscTime()
, PetscLogView()
Level#
intermediate
Location#
Index of all Sys routines
Table of Contents for all manual pages
Index of all manual pages