It looks like you're getting a segv when calling MPI_Comm_rank(). This is quite unusual -- MPI_Comm_rank() is just a local lookup / return of an integer. If MPI_Comm_rank() is seg faulting, it usually indicates that there's some other kind of memory error in the application, and this seg fault you're seeing is just a symptom -- it's not the real problem. It may have worked with Intel MPI by chance, or for some reason, Intel MPI has a different memory pattern than Open MPI and it didn't happen to trigger this exact problem.
You might want to run your application through a memory-checking debugger. > On May 9, 2018, at 11:39 AM, Ankita m <ankitamait...@gmail.com> wrote: > > yes. Because previously i was using intel-mpi. That time the program was > running perfectly. Now when i use openmpi this shows this error > files...Though i am not quite sure. I just thought if the issue will be for > Openmpi then i could get some help here. > > On Wed, May 9, 2018 at 6:47 PM, Gilles Gouaillardet > <gilles.gouaillar...@gmail.com> wrote: > Ankita, > > Do you have any reason to suspect the root cause of the crash is Open MPI ? > > Cheers, > > Gilles > > > On Wednesday, May 9, 2018, Ankita m <ankitamait...@gmail.com> wrote: > MPI "Hello World" program is also working > > please see this error file attached below. its of a different program > > On Wed, May 9, 2018 at 4:10 PM, John Hearns via users > <users@lists.open-mpi.org> wrote: > Ankita, looks like your program is not launching correctly. > I would try the following: > define two hosts in a machinefile. Use mpirun -np 2 machinefile date > Ie can you use mpirun just to run the command 'date' > > Secondly compile up and try to run an MPI 'Hello World' program > > > On 9 May 2018 at 12:28, Ankita m <ankitamait...@gmail.com> wrote: > I am using ompi -3.1.0 version in my program and compiler is mpicc > > its a parallel program which uses multiple nodes with 16 cores in each node. > > but its not working and generates a error file . i Have attached the error > file below. > > can anyone please tell what is the issue actually > > _______________________________________________ > 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 > > > _______________________________________________ > 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 -- Jeff Squyres jsquy...@cisco.com _______________________________________________ users mailing list users@lists.open-mpi.org https://lists.open-mpi.org/mailman/listinfo/users
