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Subject: Re: [hwloc-devel] 1.3.1 and 1.4rc1
From: Brice Goglin (Brice.Goglin_at_[hidden])
Date: 2011-12-13 10:40:45


Le 13/12/2011 16:22, Jeff Squyres a écrit :
>
> I can't speak for GPUs, but I think the PCI information will be useful to know what devices are close to what PUs / NUMA nodes. That information can be used to make decisions about binding, for example (i.e., you want to be "close" to the specific PCI resources that you'll be using).

In most cases, you don't need PCI support for this, you juste manipulate
a cuda device, an ibv_device, a MX endpoint, ... and use one of the
inline helpers to get the corresponding locality (a cpuset).

Brice