Oh, sorry I forgotten the test.tar.bz2. Here it is. Indeed, it's an AMD platform with 6344 Opterons. Sorry, I didn't know it was a known bug.
I think I got the latest BIOS and kernel.
Thanks for the tip to hide the warning !
List-Post: hwloc-users@lists.open-mpi.org
Date: Fri, 5 Sep 2014 13:46:25 +0200
From: brice.gog...@inria.fr
To: hwloc-us...@open-mpi.org
Subject: Re: [hwloc-users] hwloc error with "node interleaving" disabled
Hello
You sent the test.output file instead of test.tar.bz2 so I can't
check for sure. Anyway I guess this is yet another buggy AMD
platform with magny-cours/interlagos/abu-dahbi Opterons (61xx,
62xx or 63xx).
Sometimes upgrading the BIOS/kernel helps. Sometimes not.
Some L3 caches will be missing in the hwloc topology because of
this bug, it's likely not important for the vast majority of HPC
libraries.
You may hide the warning by setting HWLOC_HIDE_ERRORS=1 in your
environment.
Brice
Le 05/09/2014 12:06, Jean-Pierre Adam a écrit :
Hello hwloc experts
I encounter this bug when I'm using mpirun or hwloc directly :
****************************************************************************
* hwloc has encountered what looks like an error from the
operating system.
*
* L3 (cpuset 0x000003f0) intersects with NUMANode (P#0 cpuset
0x0000003f) without inclusion!
* Error occurred in topology.c line 940
*
* Please report this error message to the hwloc user's mailing
list,
* along with the output from the hwloc-gather-topology script.
****************************************************************************
The output of hwloc-gather-topology is attached. The OS is
Centos 7.
The tool launched with mpirun runs as expected, still the
message is a bit worrying...
I was able to avoid this message by enabling "node interleaving"
in the bios (basically disables NUMA). In my case, I got a 5%
performance loss with that setting. It could be acceptable, but
I would like to understant what is going on.
So is my motherboard / BIOS / OS buggy ?
Best regards
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test.tar.bz2
Description: BZip2 compressed data
