petsc-3.7.5 2017-01-01
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PetscLogTraceBegin

 Activates trace logging. Every time a PETSc event begins or ends, the event name is printed.

Synopsis

#include "petscsys.h"   
PetscErrorCode  PetscLogTraceBegin(FILE *file)
Logically Collective on PETSC_COMM_WORLD

Input Parameter

file -The file to print trace in (e.g. stdout)

Options Database Key

-log_trace [filename] -Activates PetscLogTraceBegin()

Notes

PetscLogTraceBegin() prints the processor number, the execution time (sec), then "Event begin:" or "Event end:" followed by the event name.

PetscLogTraceBegin() allows tracing of all PETSc calls, which is useful to determine where a program is hanging without running in the debugger. Can be used in conjunction with the -info option.

See Also

PetscLogDump(), PetscLogAllBegin(), PetscLogView(), PetscLogDefaultBegin()

Level:intermediate
Location:src/sys/logging/plog.c
Index of all Profiling routines
Table of Contents for all manual pages
Index of all manual pages