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Subject: Re: [OMPI users] (no subject)
From: MM (finjulhich_at_[hidden])
Date: 2013-10-31 05:50:55


Of course, by this you mean, with the same total number of nodes, for e.g.
64 process on 1 node using shared mem, vs 64 processes spread over 2 nodes
(32 each for e.g.)?

On 29 October 2013 14:37, Ralph Castain <rhc_at_[hidden]> wrote:

> As someone previously noted, apps will always run slower on multiple nodes
> vs everything on a single node due to the shared memory vs IB differences.
> Nothing you can do about that one.
>