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Subject: Re: [hwloc-devel] multinode/network topology status
From: Brice Goglin (Brice.Goglin_at_[hidden])
Date: 2011-10-05 02:49:46


Le 04/10/2011 16:51, Samuel Thibault a écrit :
> This looks good. hwloc-assembler-remote should probably have a
> --lstopo-path option to specify where to find lstopo, since the host
> from which we run it may not have the same hwloc installation as the
> target nodes. I'm actually unsure whether it really should default to
> $bindir/lstopo and not simply to lstopo.
>
> There is an issue with the distance code that appears when there are
> several machines with NUMA distances: the distance code assumes that the
> root of the topology has cpusets to be compared with, and quickly
> crashes on insert_by_cpuset or get_obj_covering_cpuset calls.

Thanks for the feedback. I think I fixed all this.

The second point might need more work in the future. We'll rethink about
it if people really care about distances in multinode topologies.

Brice