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Subject: Re: [OMPI devel] RFC: Force Slurm to use PMI-1 unless PMI-2 is specifically requested
From: Artem Polyakov (artpol84_at_[hidden])
Date: 2014-05-07 22:22:41


That is interesting. I think I will reconstruct your experiments on my
system when I will be testing PMI selection logic. According to your
resource count numbers I can do that. I will publish my results in the list.

2014-05-08 8:51 GMT+07:00 Christopher Samuel <samuel_at_[hidden]>:

> -----BEGIN PGP SIGNED MESSAGE-----
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>
> On 07/05/14 18:00, Ralph Castain wrote:
>
> > Interesting - how many nodes were involved? As I said, the bad
> > scaling becomes more evident at a fairly high node count.
>
> Our x86-64 systems are low node counts (we've got BG/Q for capacity),
> the cluster that those tests were run on has 70 nodes, each with 16
> cores, so I suspect we're a long long way away from that pain point.
>
> All the best!
> Chris
> - --
> Christopher Samuel Senior Systems Administrator
> VLSCI - Victorian Life Sciences Computation Initiative
> Email: samuel_at_[hidden] Phone: +61 (0)3 903 55545
> http://www.vlsci.org.au/ http://twitter.com/vlsci
>
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-- 
С Уважением, Поляков Артем Юрьевич
Best regards, Artem Y. Polyakov