All, I am running into a problem with MPI_Rget in combination with MPI_Testall, where the call to MPI_Testall fails with the error hinting at more information in the status' MPI_ERROR fields. However, these fields only signal success: [0] MPI_Testall failed: See the MPI_ERROR field in MPI_Status for the error code (17) [0] Request error: No MPI error (0) [0] Request error: No MPI error (0) I am attaching a small reproducer. I should note that the application succeeds if I am using MPI_Test on the individual requests instead of MPI_Testall. Please let me know if my usage of MPI_Rget and MPI_Testall is erroneous for some reason. I can reproduce this error with both MPICH 3.2 and 3.2.1 as well as Intel MPI 2017 even when running with a single process. Many thanks in advance, Joseph _______________________________________________ discuss mailing list [email protected] To manage subscription options or unsubscribe: https://lists.mpich.org/mailman/listinfo/discuss