PetscTime#

Returns the current time from some base time in the past in seconds.

Synopsis#

#include <petsctime.h>
PetscErrorCode PetscTime(PetscLogDouble *v)

Not Collective

Output Parameter#

v - time counter

Usage#

     PetscLogDouble v;
     PetscTime(&v);
     .... perform some calculation ...
     printf("Time for operation %g\n",v);

Note#

Since the PETSc libraries incorporate timing of phases and operations, we do not recommend ever using PetscTime(). The options database command -log_view activates PETSc library timing. See PetscLogStageRegister(), PetscLogEventRegister(), PetscLogEventBegin(), PetscLogEventEnd() for how to register stages and events in application codes.

Level#

developer

Location#

include/petsctime.h

Examples#

src/sys/tutorials/ex6.c
src/sys/tutorials/ex7.c
src/ksp/ksp/tutorials/bench_kspsolve.c

Index of all Sys routines
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Index of all manual pages