[Beowulf] An annoying MPI problem

[Joe Landman]

Chris Samuel wrote:
> ----- "Bruno Coutinho" <coutinho at dcc.ufmg.br> wrote:
> 
>> Try disabling shared memory only.
>> Open MPI shared memory buffer is limited and it enters deadlock if
>> you overflow it.
>> As Open MPI uses busy wait, it appears as a livelock.
> 
> Interesting - is it possible to disable that at runtime
> with one of its billions of configuration options ?

-mca btl ^sm

> 
> cheers,
> Chris


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