[mvapich-discuss] MPI_Init_thread failed!

[Hari Subramoni]

Hi Wan,

Did you use the "MV2_ENABLE_AFFINITY=0" environment variable when launching
your application? If not, can you please try re-running your application
with "MV2_ENABLE_AFFINITY=0" set?

Please refer to the following section of our userguide for more information
on how to run MVAPICH2 in multi-threaded environments.

http://mvapich.cse.ohio-state.edu/support/user_guide_mvapich2-2.0rc2.html#x1-780006.16

Regards,
Hari.


On Wed, Jun 18, 2014 at 2:41 AM, Ji Wan <wanjime at gmail.com> wrote:

> Dear Developers,
>
> I have an project which needs to using MPI functions in multiple threads,
> so I have compiled `mvapich2-2.0rc2` using the following flags:
>
> ./configure LDFLAGS='-lstdc++' \
>   --disable-f77 --disable-fc  \
>   --enable-g=dbg --disable-fast \
>   --enable-threads=multiple \
>   --enable-cuda --with-cuda=/usr/local/cuda
>
>
> At the beginning of my program, I have the following code:
>
>   int provided;
>   int ret = MPI_Init_thread(&argc, &argv, *MPI_THREAD_MULTIPLE*, &
> *provided*);
>
>
> But after this code executed, the value in *provided* is
> *MPI_THREAD_SINGLE*, not *MPI_THREAD_MULTIPLE*.
>
> Would you please giving some suggestion to this problem?
>
> --
> Best regards,
> Wan Ji
>
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>
>
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