Short answer: yes, enabling threading impacts performance, to include silently disabling OpenFabrics support.
On Oct 30, 2012, at 6:03 AM, Paul Kapinos wrote: > At least, be aware of silently disabling the usage of InfiniBand if 'multiple' > threading level is activated: > > http://www.open-mpi.org/community/lists/devel/2012/10/11584.php > > > > > On 10/29/12 19:14, Daniel Mitchell wrote: >> Hi everyone, >> >> I've asked my linux distribution to repackage Open MPI with thread support >> (meaning configure with --enable-thread-multiple). They are willing to do >> this if it won't have any performance/stability hit for Open MPI users who >> don't need thread support (meaning everyone but me, apparently). Does >> enabling thread support impact performance/stability? >> >> Daniel >> _______________________________________________ >> users mailing list >> us...@open-mpi.org >> http://www.open-mpi.org/mailman/listinfo.cgi/users >> > > > -- > Dipl.-Inform. Paul Kapinos - High Performance Computing, > RWTH Aachen University, Center for Computing and Communication > Seffenter Weg 23, D 52074 Aachen (Germany) > Tel: +49 241/80-24915 > > _______________________________________________ > users mailing list > us...@open-mpi.org > http://www.open-mpi.org/mailman/listinfo.cgi/users -- Jeff Squyres jsquy...@cisco.com For corporate legal information go to: http://www.cisco.com/web/about/doing_business/legal/cri/
