petsc-3.12.5 2020-03-29
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PetscCommGetNewTag

 Gets a unique new tag from a PETSc communicator. All processors that share the communicator MUST call this routine EXACTLY the same number of times. This tag should only be used with the current objects communicator; do NOT use it with any other MPI communicator.

Synopsis

#include "petscsys.h"   
PetscErrorCode  PetscCommGetNewTag(MPI_Comm comm,PetscMPIInt *tag)
Collective

Input Parameter

comm -the MPI communicator

Output Parameter

tag -the new tag

See Also

PetscObjectGetNewTag(), PetscCommDuplicate()

Level

developer

Location

src/sys/objects/tagm.c
Index of all Sys routines
Table of Contents for all manual pages
Index of all manual pages