petsc-3.4.5 2014-06-29
PetscObjectComm
Gets the MPI communicator for any PetscObject regardless of the type.
Synopsis
#include "petscsys.h"
MPI_Comm PetscObjectComm(PetscObject obj)
Not Collective
Input Parameter
obj -any PETSc object, for example a Vec, Mat or KSP. Thus must be
cast with a (PetscObject), for example,
SETERRQ(PetscObjectComm((PetscObject)mat,...);
Output Parameter
comm -the MPI communicator or MPI_COMM_NULL if object is not valid
Notes: Never use this in the form
comm = PetscObjectComm((PetscObject)obj);
instead use PetscObjectGetComm()
See Also
PetscObjectGetComm()
Level:advanced
Location:src/sys/objects/gcomm.c
Index of all Sys routines
Table of Contents for all manual pages
Index of all manual pages
Examples
src/mat/examples/tutorials/ex8.c.html
src/snes/examples/tutorials/ex12.c.html
src/snes/examples/tutorials/ex15.c.html
src/snes/examples/tutorials/ex31.c.html
src/snes/examples/tutorials/ex48.c.html
src/snes/examples/tutorials/ex52.c.html
src/snes/examples/tutorials/ex62.c.html
src/ts/examples/tutorials/ex9.c.html
src/ts/examples/tutorials/ex11.c.html
src/ts/examples/tutorials/ex14.c.html
src/ts/examples/tutorials/ex15.c.html