On Mar 3, 2010, at 1:24 PM, Prof Brian Ripley wrote: > On Thu, 4 Mar 2010, Patrick Connolly wrote: > >> On Wed, 03-Mar-2010 at 08:42AM +0000, Prof Brian Ripley wrote: >> >>> There are many different versions of OpenMPI about. It looks like >>> you have one that is set up for specialized hardware. Either this >>> is the wrong version or a configuration error, and you will need to >>> talk to your 'local System Administrator'. >> >> He knows less about it (MPI, at least) than I do. Perhaps this is >> 'specialized hardware' in that it's a dual quad-core processor machine >> -- but I'd have thought that's not particularly special nowadays. > > No, it is high-speed interconnects, used in high-performance clusters. > >> I notice that my Fedora installation has no dat.conf file. Perhaps >> it pertains to something special on the CentOS machine. I can't >> check the CentOS machine right now, but at one time, I did find the >> rpm that is associated with the dat.conf file. Fedora seems not to >> need that one. > > It does if you have that sort of hardware (and we do on one of the clusters > we use). > >>> Incidentally, you should not have to set LD_LIBRARY_PATH, but I >> >> It might not be elegant, but at least it got over that problem. Is >> there any possibility that doing it so inelegantly has a bearing on >> the issues I have now? > > Unlikely, unless you got the wrong libmpi. > >>> frequently have had to add configuration files in /etc/ld.so.conf.d, >>> including for openmpi on Fedora 12. On Fedora 10 (but not 12) MPI was >> >> Fedora 11 would appear to be like F12. I'll check later if CentOS is >> more like the way F10 was.
<snip> Patrick, just as an FYI, I did not see which variant of CentOS you are using, but: CentOS 4, which is based upon RHEL 4, is in turn based upon Fedora Core 3 (2004). CentOS 5, which is based upon RHEL 5, is in turn based upon Fedora Core 6 (2006). So to reinforce, there is a substantial and intentional lag between RHEL/CentOS and Fedora. Recall that RHEL and CentOS are targeted for stable server use, whereas Fedora is a bleeding edge distro. HTH, Marc Schwartz ______________________________________________ R-devel@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-devel
