Try running the "ring" program in our example directory and see if that works
On Mar 16, 2014, at 4:26 PM, Elias Rudberg <elias.rudb...@it.uu.se> wrote: > Hello! > > I would like to report a bug in Open MPI 1.7.4 when compiled with > --enable-mpi-thread-multiple. > > The bug can be reproduced with the following test program (mpi-send-recv.c): > =========================================== > #include <mpi.h> > #include <stdio.h> > int main() { > MPI_Init(NULL, NULL); > int rank; > MPI_Comm_rank(MPI_COMM_WORLD, &rank); > printf("Rank %d at start\n", rank); > if (rank) > MPI_Send(NULL, 0, MPI_CHARACTER, 0, 0, MPI_COMM_WORLD); > else > MPI_Recv(NULL, 0, MPI_CHARACTER, 1, 0, MPI_COMM_WORLD, MPI_STATUS_IGNORE); > printf("Rank %d at end\n", rank); > MPI_Finalize(); > return 0; > } > =========================================== > > With Open MPI 1.7.4 compiled with --enable-mpi-thread-multiple, the test > program above fails like this: > $ mpirun -np 2 ./a.out > Rank 0 at start > Rank 1 at start > [elias-p6-2022scm:2743] *** An error occurred in MPI_Recv > [elias-p6-2022scm:2743] *** reported by process > [140733606985729,140256452018176] > [elias-p6-2022scm:2743] *** on communicator MPI_COMM_WORLD > [elias-p6-2022scm:2743] *** MPI_ERR_TYPE: invalid datatype > [elias-p6-2022scm:2743] *** MPI_ERRORS_ARE_FATAL (processes in this > communicator will now abort, > [elias-p6-2022scm:2743] *** and potentially your MPI job) > > Steps I use to reproduce this in Ubuntu: > > (1) Download openmpi-1.7.4.tar.gz > > (2) Configure like this: > ./configure --enable-mpi-thread-multiple > > (3) make > > (4) Compile test program like this: > mpicc mpi-send-recv.c > > (5) Run like this: > mpirun -np 2 ./a.out > This gives the error above. > > Of course, in my actual application I will want to call MPI_Init_thread with > MPI_THREAD_MULTIPLE instead of just MPI_Init, but that does not seem to > matter for this error; the same error comes regardless of the way I call > MPI_Init/MPI_Init_thread. So I just put MPI_Init in the test code above to > make it as short as possible. > > Do you agree that this is a bug, or am I doing something wrong? > > Any ideas for workarounds to make things work with > --enable-mpi-thread-multiple? (I do need threads, so skipping > --enable-mpi-thread-multiple is probably not an option for me.) > > Best regards, > Elias > > > _______________________________________________ > users mailing list > us...@open-mpi.org > http://www.open-mpi.org/mailman/listinfo.cgi/users