I don't see anything in the code that limits the number of procs in a rankfile. Are the attached rankfiles the ones you are trying to use? I'm wondering if there is a syntax error that is causing the problem. It would help if you could provide the complete error message output.
At one time, there was a limit on the number of procs on a node - nothing to do with rankfile. That was fixed, though, and there is no real limit any more. I don't recall the precise release number where it changed in the 1.5 series - you might try updating to 1.5.4 as I'm sure it doesn't exist there. On Jan 20, 2012, at 12:43 PM, Paul Kapinos wrote: > Hello, Open MPI developer! > > Now, we have a really nice toy: 2 Tb RAM, 16 sockets, 128 cores. > (4x smaller Bull S6010 coupled by BCS chips to a single image machine) > > On a such big box, process pinning is vital. > > So we tried to use the Open MPI capabilities to pin te processes. But it seem > that the rankfile infrastructure does not work properly: we always get > "Error: Invalid argument" message on the 128-core node, also if the rankfile > was OK. > On a smaller node (up to 32 cores/ 64 threads) the very same rankfile (with > changed node name of course) works well. > > I believe, this computer dimension is a bit too big for the pinning > infrasructure now. A bug? > > Best wishes, > > Paul Kapinos > > P.S. see the attached .tgz for some logzz > > ------------------------------------------------------------------------------ > Rankfiles > Rankfiles provide a means for specifying detailed information about how > process ranks should be mapped to nodes and how they should be bound. > Consider the following: > .... > ------------------------------------------------------------------------------ > Open RTE: 1.5.3 > Open RTE SVN revision: r24532 > Open RTE release date: Mar 16, 2011 > OPAL: 1.5.3 > OPAL SVN revision: r24532 > OPAL release date: Mar 16, 2011 > Ident string: 1.5.3 > > > > -- > 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 > <rankfiles128.tgz>_______________________________________________ > users mailing list > us...@open-mpi.org > http://www.open-mpi.org/mailman/listinfo.cgi/users
