Hello,

Unfortunately it fails as well.
Failure happens when the proc involved is not proc number 0 of the node.

Cheers
Olivier Cessenat.

----- Mail original -----
De: "Brice Goglin" <brice.gog...@inria.fr>
À: "Hardware locality user list" <hwloc-us...@open-mpi.org>, cesse...@free.fr
Envoyé: Mardi 15 Janvier 2013 19:26:30
Objet: Re: [hwloc-users] Segmentation fault in collect_proc_cpuset,     
topology.c line 1074

Hello 
Indeed, there's a big cgroup crash in 1.6. Can you verify that 1.6.1rc2 works 
fine? 
Thanks 
Brice 




cesse...@free.fr a écrit : 

Hello, 

When updating from 1.5.1 to 1.6 I get a segfault when inside a 
cgroup/cpuset in collect_proc_cpuset, file topology.c line 1074. 

It appears that an HWLOC_OBJ_CORE has a son who is it's HWLOC_OBJ_GROUP's 
father ! 

$ cat /proc/self/cgroup 
2: cpuset: /slurm/test 
1: freezer: / 
$ lssubsys -m cpuset 
cpuset /cgroup/cpuset 
$ cat /cgroup/cpuset/slurm/test/cpuset.cpus 
31 
$ hwloc-1.6/bis/lstopo 
Segmentation fault (core dumped) 
$ gdb... 
Program terminated with signal 11, Segmentation fault. 
#0 0x00007ffd758d225e in collect_proc_cpuset (obj=<value opt out>, 
sys=0x1f4dba0) at topology.c: 1074 

The machine is made of bullx super-node S6010 (CEA Tera 100). 

Thanks for your help, 

Olivier Cessenat. 




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