[Wien] MPI

[Luis Ogando]

Dear Prof. Marks,

   Thank you very much for your prompt answer.
   I am using openmpi, but I believe that I am facing some of the tricky
issues you mentioned. I work in a SMP machine and the calculation starts
fine. After some tens of iterations, MPI suddenly asks for a password and
everything goes down to the drain.
   I am using open mpi 1.6. Do you recommend any older version ??
   All the best,
                  Luis Ogando




2013/2/20 Laurence Marks <L-marks at northwestern.edu>

> One that works.
>
> Some versions of openmpi have problems although that is probably the
> best option for the future. There are some tricky issues with openmpi
> related to how your flavor of ssh works, there is no standard and some
> do not propogate kill commands which means that they can leave
> orphans.
>
> An alternative is mvapich. In a benchmark that I did a few months ago
> the Intel mpi was much better for AVX instructions, but that may have
> changed.
>
> Openmpi is easy to compile; mvapich can be a little trickier.
>
> N.B., if you have fast connections, e.g. infiniband, they are more
> than fast enough and I have never seen this as rate limiting with
> Wien2k. With ethernet it matters.
>
> On Wed, Feb 20, 2013 at 10:29 AM, Luis Ogando <lcodacal at gmail.com> wrote:
> > Dear Wien2k community,
> >
> >    Is there any recommended flavor and version of an MPI compiler to use
> > with " Intel(R) Fortran Intel(R) 64 Compiler XE for applications running
> on
> > Intel(R) 64, Version 12.0.3.174 Build 20110309 " ?
> >    All the best,
> >                       Luis Ogando
>
>
>
> --
> Professor Laurence Marks
> Department of Materials Science and Engineering
> Northwestern University
> www.numis.northwestern.edu 1-847-491-3996
> "Research is to see what everybody else has seen, and to think what
> nobody else has thought"
> Albert Szent-Gyorgi
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>
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