petsc-3.9.4 2018-09-11

PetscLogNestedBegin

Turns on nested logging of objects and events. This logs flop rates and object creation and should not slow programs down too much.

#include "petsclog.h" 
PetscErrorCode PetscLogNestedBegin(void)

Logically Collective over PETSC_COMM_WORLD

-log_view :filename.xml:ascii_xml -Prints an XML summary of flop and timing information to the file

      PetscInitialize(...);
      PetscLogNestedBegin();
       ... code ...
      PetscLogView(viewer);
      PetscFinalize();

log, begin

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