Open MPI logo

Hardware Locality Development Mailing List Archives

  |   Home   |   Support   |   FAQ   |   all Hardware Locality Development mailing list

Subject: Re: [hwloc-devel] AIX
From: Samuel Thibault (samuel.thibault_at_[hidden])
Date: 2011-08-03 06:56:19


Brice Goglin, le Wed 03 Aug 2011 12:49:17 +0200, a écrit :
> Le 03/08/2011 12:46, Samuel Thibault a écrit :
> > Also, it seems that on your system the processing units are gathered 4
> > by 4 (exposed as a "group" in hwloc). Do you happen to know what this
> > physically correspond to?
>
> Power6 is dual-core dual-thread and we don't have sockets in this
> output, so I assume each 4-group is a socket ?

That's what I'd assume too, I'd just rather make sure. What is missing
is the R_SOMETHING that corresponds to. On our old 16 cores decrypthon
machine, R_SMPSDL was covering the whole system, so that wouldn't be it,
I guess AIX defined yet another R_FOO.

Samuel