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Subject: Re: [hwloc-devel] Fwd: BGQ empty topology with MPI
From: Daniel Ibanez (dan.a.ibanez_at_[hidden])
Date: 2012-03-22 18:47:53

I've compiled this test, but the machine is on hold for their own testing.
I should be able to run in two days and report the results.

On Thu, Mar 22, 2012 at 6:36 PM, Brice Goglin <Brice.Goglin_at_[hidden]> wrote:

> Le 22/03/2012 23:33, Daniel Ibanez a écrit :
> > I've run this test before (didnt keep the results but can run it again).
> > I got debug output and compared it with the output from a hwloc test
> > executable
> > and I noticed that my program did not show any PU objects were
> discovered.
> > In my program the first discovered topology is just a Machine object,
> > but in the hwloc program its a Machine object and 64 PU objects.
> > something went wrong in PU detection...
> If I am reading your output correctly, all PUs are created by
> setup_pu_level() depending on the return value of
> hwloc_fallback_nbprocessors() defined in src/topology.c. Any chance you
> add some printf there to understand what's going on?
> hwloc_fallback_nbprocessors() would likely return 64 when things work
> and 0 otherwise here.
> Brice

Dan Ibanez