Dear Jeff, you are right. The question is: Is it possible to have a barrier for all CPUs despite they belong to different group? If the answer is yes I will go in more details.
Thank a lot Diego On 10 August 2018 at 19:49, Jeff Squyres (jsquyres) via users < users@lists.open-mpi.org> wrote: > I'm not quite clear what the problem is that you're running in to -- you > just said that there is "some problem with MPI_barrier". > > What problem, exactly, is happening with your code? Be as precise and > specific as possible. > > It's kinda hard to tell what is happening in the code snippet below > because there's a lot of variables used that are not defined in your > snippet -- so we have no way of knowing what is going on just from these > few lines of code. > > > > > On Aug 10, 2018, at 11:52 AM, Diego Avesani <diego.aves...@gmail.com> > wrote: > > > > Dear all, > > > > I have a MPI program with three groups with some CPUs in common. > > > > I have some problem with MPI_barrier. > > > > I try to make my self clear. I have three communicator: > > INTEGER :: MPI_GROUP_WORLD > > INTEGER :: MPI_LOCAL_COMM > > INTEGER :: MPI_MASTER_COMM > > > > when I apply: > > IF(MPIworld%rank.EQ.0) WRITE(*,*) > > > > CALL MPI_Barrier(MPI_COMM_WORLD,MPIworld%iErr) > > > > IF(MPI_COMM_NULL .NE. MPI_MASTER_COMM)THEN > > WRITE(*,'(A12,I3,A4,F10.5)') 'master > rank',MPImaster%rank,'eff',eff > > ENDIF > > > > CALL MPI_Barrier(MPI_COMM_WORLD,MPIworld%iErr) > > > > IF(MPIworld%rank.EQ.0) WRITE(*,*) > > > > What could be the problem? > > Thanks a lot, > > Diego > > > > > > _______________________________________________ > > users mailing list > > users@lists.open-mpi.org > > https://lists.open-mpi.org/mailman/listinfo/users > > > -- > Jeff Squyres > jsquy...@cisco.com > > _______________________________________________ > users mailing list > users@lists.open-mpi.org > https://lists.open-mpi.org/mailman/listinfo/users >
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