Here is a partial output from strace (the program does the same thing again and again and only changes the cpus that do the work) http://rapidshare.com/files/399658973/strace.txt.html Sorry for the rapidshare mailing list didn't let me directly post it.
GNU C Library (Debian EGLIBC 2.11.1-3) stable release version 2.11.1, by Roland McGrath et al. Copyright (C) 2009 Free Software Foundation, Inc. This is free software; see the source for copying conditions. There is NO warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. Compiled by GNU CC version 4.4.4. Compiled on a Linux 2.6.32 system on 2010-06-08. Available extensions: crypt add-on version 2.1 by Michael Glad and others GNU Libidn by Simon Josefsson Native POSIX Threads Library by Ulrich Drepper et al BIND-8.2.3-T5B For bug reporting instructions, please see: <http://www.debian.org/Bugs/>.
> Date: Wed, 16 Jun 2010 15:21:04 +0200 > From: firstname.lastname@example.org > To: email@example.com > Subject: Re: [hwloc-users] Problem with hwloc_set_thread_cpubind() and pthread_barrier_wait() on new debianj > > Αλέξανδρος Παπαδογιαννάκης, le Wed 16 Jun 2010 16:11:12 +0300, a écrit : > > There is no shed affinity call at all if the thread is on a barrier :/ > > Ok, so since hwloc_set_thread_cpubind returns 0, the issue can only be > in glibc's pthread_setaffinity_np() (and I guess your are calling it on > a thread != pthread_self()) Which version of glibc are you using? > > Samuel > _______________________________________________ > hwloc-users mailing list > firstname.lastname@example.org > http://www.open-mpi.org/mailman/listinfo.cgi/hwloc-users
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