[mpich-discuss] MPI_THREAD_MULTIPLE support on ch3:sock?

Dave Goodell goodell at mcs.anl.gov
Thu Jan 24 14:09:34 CST 2013


FWIW, usually you want to leave the default in place, which is "runtime".

I can reproduce your problem.  I've filed a ticket for it: https://trac.mpich.org/projects/mpich/ticket/1787

-Dave

On Jan 24, 2013, at 1:34 PM CST, Nicolas Rosner wrote:

> Hello,
> 
> I'm trying to configure MPICH2 1.5 with the sock device and MULTIPLE
> thread support level.
> 
> At first I configured without specifying anything about threads (since
> on my MPICH2 1.4.x machines, using just --with-device=ch3:sock does
> seem to build with MULTIPLE support by default). But all I obtained
> was SINGLE.
> 
> So I tried to reconfigure the 1.5 release, now explicitly specifying
> --enable-threads=multiple, and got:
> 
>  error: The device ch3:sock does not support MPI_THREAD_MULTIPLE
> 
> Yet on the README for the 1.5 release, I see:
> 
>  --enable-threads - Build MPICH2 with support for multi-threaded
>                     applications. Only the sock and nemesis channels
>                     support MPI_THREAD_MULTIPLE.
> 
> Should this work? Any differences between 1.4 and 1.5 on this?
> 
> Thanks,
> Nicolás
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