Gus Correa <g...@ldeo.columbia.edu> wrote > If you already set up passwordless ssh across the nodes > OpenMPI will probably get you up and running faster than MPICH2. > > OpenMPI is very easy to install, say, with gcc, g++, and > gfortran (make sure you have them installed on your main machine, > use Ubuntu apt-get, if you don't have them).
Well on Linux maybe, but since OpenMPI has been soundly kicking my butt trying to get it installed and working on a Solaris 5.8 Sparc system for the last day, I can't let that slide as a general statement. OpenMPI 1.4.1 needed a few minor code mods to build at all using gcc on this system (it expects some defines that aren't present, this is with the sunfreeware gcc versions), and those mods were just about counting CPUs, which wasn't an issue in this case because it is a single CPU system. These same issues were also reported by another fellow for 1.3.1 on a Solaris 8 system: http://www.open-mpi.org/community/lists/users/2009/02/7994.php The gcc version works so long as mpirun only sends jobs to itself. Sadly, try to send ANYTHING to a remote machine (linux Intel, in case that matters) and it treats one to: mca_oob_tcp_msg_send_handler: writev failed: Bad file descriptor This on a build with no warnings or errors. Definitely a problem on the Solaris side, since any of the linux machines can initiate an mpirun to another node, or all other nodes, that works with the example programs. So with gcc, OpenMPI not too useful for the front end of an MPI cluster. Today I'm trying again using Sun's Forte 7 tools, which requires a fairly complex configure line: ./configure --with-sge --prefix=/opt/ompi141 CFLAGS="-xarch=v8plusa" CXXFLAGS="-xarch=v8plusa" FFLAGS="-xarch=v8plusa" FCFLAGS="-xarch=v8plusa" CC=/opt/SUNWspro/bin/cc CXX=/opt/SUNWspro/bin/CC F77=/opt/SUNWspro/bin/f77 FC=/opt/SUNWspro/bin/f95 CCAS=/opt/SUNWspro/bin/cc CCASFLAGS="-xarch=v8plusa" >configure_4.log 2>&1 & Not sure yet if that is sufficient, as none of the preceding configure variants resulted in a set of Makefiles which would actually run to completion, and this one is still building. Regards, David Mathog mat...@caltech.edu Manager, Sequence Analysis Facility, Biology Division, Caltech _______________________________________________ Beowulf mailing list, Beowulf@beowulf.org sponsored by Penguin Computing To change your subscription (digest mode or unsubscribe) visit http://www.beowulf.org/mailman/listinfo/beowulf
