petsc-3.13.6 2020-09-29

PetscTimeSubtract

Subtracts the current time of day (in seconds) from the value v.

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

Not Collective

v -time counter

v -time counter (v = v - current time)

Since the PETSc libraries incorporate timing of phases and operations, we do not every recommend using PetscTimeSubtract() The options database command -log_view activates PETSc library timing. See Users-Manual: Chapter 13 Profiling for more details, also see PetscLogStageRegister(), PetscLogEventRegister(), PetscLogEventBegin(), PetscLogEventEnd() for how to register stages and events in Section 1.5 Writing Application Codes with PETSc codes.

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