Deal all, probably I have found the error. Let's me check. Probably I have not properly set-up colors.
Thanks a lot, I hope that you have not lost too much time for me, I will let you know If that was the problem. Thanks again Diego On 3 August 2018 at 19:57, Diego Avesani <diego.aves...@gmail.com> wrote: > Dear R, Dear all, > > I do not know. > I have isolated the issues. It seem that I have some problem with: > CALL MPI_COMM_SPLIT(MPI_COMM_WORLD,colorl,MPIworld%rank,MPI_ > LOCAL_COMM,MPIworld%iErr) > CALL MPI_COMM_RANK(MPI_LOCAL_COMM, MPIlocal%rank,MPIlocal%iErr) > CALL MPI_COMM_SIZE(MPI_LOCAL_COMM, MPIlocal%nCPU,MPIlocal%iErr) > > openMPI seems not able to create properly MPIlocal%rank. > > what should be? a bug? > > thanks again > > Diego > > > On 3 August 2018 at 19:47, Ralph H Castain <r...@open-mpi.org> wrote: > >> Those two command lines look exactly the same to me - what am I missing? >> >> >> On Aug 3, 2018, at 10:23 AM, Diego Avesani <diego.aves...@gmail.com> >> wrote: >> >> Dear all, >> >> I am experiencing a strange error. >> >> In my code I use three group communications: >> MPI_COMM_WORLD >> MPI_MASTERS_COMM >> LOCAL_COMM >> >> which have in common some CPUs. >> >> when I run my code as >> mpirun -np 4 --oversubscribe ./MPIHyperStrem >> >> I have no problem, while when I run it as >> >> mpirun -np 4 --oversubscribe ./MPIHyperStrem >> >> sometimes it crushes and sometimes not. >> >> It seems that all is linked to >> CALL MPI_REDUCE(QTS(tstep,:), QTS(tstep,:), nNode, MPI_DOUBLE_PRECISION, >> MPI_SUM, 0, MPI_LOCAL_COMM, iErr) >> >> which works with in local. >> >> What do you think? Can you please suggestion some debug test? >> Is a problem related to local communications? >> >> Thanks >> >> >> >> Diego >> >> _______________________________________________ >> users mailing list >> users@lists.open-mpi.org >> https://lists.open-mpi.org/mailman/listinfo/users >> >> >> >> _______________________________________________ >> users mailing list >> users@lists.open-mpi.org >> https://lists.open-mpi.org/mailman/listinfo/users >> > >
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