[mvapich-discuss] thread safety

[Dhabaleswar Panda]

> Hi,
>
> Which versions of mvapich are thread safe ?
>
> http://mvapich.cse.ohio-state.edu/support/user_guide_mvapich2-1.4rc2.html
> "1.4 provides support and optimizations for other MPI-2 features, multi-threading"
> Does that mean thread safe ?

Yes. MVAPICH2 1.4 is based on MPICH2 1.0.8p1. You should be using
MPI_THREAD_MULTIPLE feature.

Thanks,

DK

> MPICH2 supports thread safety:
> www.mcs.anl.gov/~thakur/papers/mpi-threads.pdf
> "In the next release, 1.0.4, the default build of the ch3:sock channel will support thread safety,
> but thread safety will be enabled only if the user calls MPI Init thread with
> MPI THREAD MULTIPLE."
> Does mvapich use the same thread safety mechanism ?
>
> thanks,
> Scott
>
> Scott Brozell, Ph.D.
> Senior Systems Developer/Engineer
> Science and Technology Support
> Ohio Supercomputer Center
>
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