Fwd'ing to devel list as a bug report... Thanks. -------------------------------- Jacob M. Katz | jacob.k...@intel.com<mailto:jacob.k...@intel.com> | Work: +972-4-865-5726 | iNet: (8)-465-5726
From: users-boun...@open-mpi.org [mailto:users-boun...@open-mpi.org] On Behalf Of Katz, Jacob Sent: Sunday, May 10, 2009 12:52 To: Open MPI Users Subject: [OMPI users] Bug in return status of MPI_WAIT()? Hi, While trying error-related functionality of OMPI, I came across a situation where when I use MPI_ERRORS_RETURN error handler, the errors do not come out correctly from WAIT calls. The program below correctly terminates with a fatal "message truncated" error, but when the line setting the error handler to MPI_ERRORS_RETURN is uncommented, it silently completes. I expected the print out that checks the status after WAIT call to be executed, but it wasn't. The issue didn't happen when using blocking recv. A bug or my incorrect usage? Thanks! // mpic++ -o test test.cpp // mpirun -np2 ./test #include "mpi.h" #include <iostream> using namespace std; int main (int argc, char *argv[]) { int rank; char buf[100] = "hmmmm"; MPI::Status stat; MPI::Init(argc, argv); rank = MPI::COMM_WORLD.Get_rank(); // MPI::COMM_WORLD.Set_errhandler(MPI::ERRORS_RETURN); if (rank == 0) { MPI::Request r = MPI::COMM_WORLD.Irecv(buf, 1, MPI_CHAR, MPI::ANY_SOURCE, MPI::ANY_TAG); r.Wait(stat); if (stat.Get_error() != MPI::SUCCESS) { cout << "0: Error during recv" << endl; } } else { MPI::COMM_WORLD.Send(buf, 2, MPI_CHAR, 0, 0); } MPI::Finalize(); return (0); } -------------------------------- Jacob M. Katz | jacob.k...@intel.com<mailto:jacob.k...@intel.com> | Work: +972-4-865-5726 | iNet: (8)-465-5726 --------------------------------------------------------------------- Intel Israel (74) Limited This e-mail and any attachments may contain confidential material for the sole use of the intended recipient(s). Any review or distribution by others is strictly prohibited. If you are not the intended recipient, please contact the sender and delete all copies.
