petsc-3.8.4 2018-03-24
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PetscBarrier

 Blocks until this routine is executed by all processors owning the object obj.

Synopsis

#include "petscsys.h" 
PetscErrorCode  PetscBarrier(PetscObject obj)

Input Parameters

obj -PETSc object (Mat, Vec, IS, SNES etc...) The object be caste with a (PetscObject). NULL can be used to indicate the barrier should be across MPI_COMM_WORLD

Notes

This routine calls MPI_Barrier with the communicator of the PETSc Object obj

Fortran Usage

You may pass PETSC_NULL_VEC or any other PETSc null object, such as PETSC_NULL_MAT, to indicate the barrier should be across MPI_COMM_WORLD.

Level:intermediate
Location:src/sys/utils/pbarrier.c
Index of all Sys routines
Table of Contents for all manual pages
Index of all manual pages

Examples

src/snes/examples/tutorials/ex5s.c.html
src/snes/examples/tutorials/ex77.c.html
src/tao/pde_constrained/examples/tutorials/elliptic.c.html
src/tao/pde_constrained/examples/tutorials/parabolic.c.html
src/tao/pde_constrained/examples/tutorials/hyperbolic.c.html