PetscCommGetNewTag#
Gets a unique new tag from a PETSc 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 
Notes#
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.
See Also#
Level#
developer
Location#
Index of all Sys routines
Table of Contents for all manual pages
Index of all manual pages