PetscSetCommWorld

Sets a communicator to be PETSc's world communicator (default is MPI_COMM_WORLD). Must call BEFORE PetscInitialize().

Synopsis

int PetscSetCommWorld(MPI_Comm comm)
Collective on MPI_Comm

Input Parameter

comm -the communicator

Note

This routine is intended for users who need to initialize PETSc on asubset of processors within a larger job. Thus, most users need notcall this routine.

Keywords

set, communicator, world

Location: src/sys/src/objectspcomm.c
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