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Subject: Re: [OMPI devel] poor btl sm latency
From: Brice Goglin (Brice.Goglin_at_[hidden])
Date: 2012-02-16 09:46:46


Le 16/02/2012 15:39, Matthias Jurenz a écrit :
> Here the output of lstopo from a single compute node. I'm wondering that the
> fact of L1/L2 sharing isn't visible - also not in the graphical output...

That's a kernel bug. We're waiting for AMD to tell the kernel that L1i
and L2 are shared across dual-core modules. If you have some contact at
AMD, please tell them to look at
https://bugzilla.kernel.org/show_bug.cgi?id=42607

Brice