Depending on what version you use, the option has been renamed
--enable-mpi-thread-multiple.
Anyhow, there is widespread concern whether the support is robust. The
support is known to be limited and the performance poor.
On 5/4/2011 9:14 AM, Mark Dixon wrote:
> I've been asked about mixed-mode MPI/OpenMP programming with OpenMPI,
> so have been digging through the past list messages on MPI_THREAD_*,
> etc. Interesting stuff :)
>
> Before I go ahead and add "--enable-mpi-threads" to our standard
> configure flags, is there any reason it's disabled by default, please?
>
> I'm a bit puzzled, as this default seems in conflict with whole "Law
> of Least Astonishment" thing. Have I missed some disaster that's going
> to happen?
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