[mpich-discuss] Nemesis engine

[Halim Amer]

Hi Viswanath,

Nemesis supports multithreading. Have you initialized the MPI 
environment with MPI_THREAD_MULTIPLE threading support?

If you still see the problem after the above initialization, please send 
us a minimal example code that reproduces it.

Thank you,
--Halim

Abdelhalim Amer (Halim)
Postdoctoral Appointee
MCS Division
Argonne National Laboratory

On 7/30/15 9:40 AM, Viswanath Krishnamurthy wrote:
> Hi All,
>
> I am currently working on MPICH-version 3.1.4 on Ubuntu..
> where I get an error stating that
>
> Assertion failed in
> file src/mpid/ch3/channels/nemesis/src/ch3_progress.c at Line 252
> *
> *
> The actual problem which I face is that currently even if MPI_Sends have
> already been dispatched, certain nodes keep waiting for MPI_Recvs which
> never arrive at all(Using multithreading). When I referred the internet,
> my understanding is that nemesis is written to handle only one thread
> receive. Please let me know about the latest patch for nemesis engine or
> the mpich version which has the changes.
> *src/mpid/ch3/channels/nemesis/src/ch3_progress.c *
>
> Thanks,
> Viswanath
>
>
>
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