[mpich-discuss] MPI_Rget + MPI_Testall fails with success

[Min Si]

Hi Joseph,

Thanks for reporting this issue and the reproducer program. I just 
confirmed this is a bug in MPICH request-based RMA routine. I will fix 
it soon and add your reproducer into our test suite.

You can check the status through the ticket: 
https://github.com/pmodels/mpich/issues/2880

Thanks,
Min
On 11/28/17 5:48 AM, Joseph Schuchart wrote:
> 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
>
>
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