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Subject: Re: [OMPI users] knem/openmpi performance?
From: Dave Love (d.love_at_[hidden])
Date: 2013-07-18 07:22:20


"Elken, Tom" <tom.elken_at_[hidden]> writes:

>> I was hoping that someone might have some examples of real application
>> behaviour rather than micro benchmarks. It can be crazy hard to get that
>> information from users.
> [Tom]

> I don't have direct performance information on knem, but with Intel's
> (formerly QLogic's) PSM layer as delivered in our software stack
> (Intel True Scale Fabric Suite) known as IFS,

It's difficult to keep up :-/.

> there is a kcopy module
> that assists shared memory MPI bandwidth in a way similar to knem.

Somewhat OT, but is it documented? I went looking some time ago, and
couldn't find anything more useful than the source.