On Thu, 2011-05-19 at 08:27 -0600, Samuel K. Gutierrez wrote: > Hi, > > Try the following QP parameters that only use shared receive queues. > > -mca btl_openib_receive_queues S,12288,128,64,32:S,65536,128,64,32 >
Thanks for that. If I run the job over 2 x 48 cores it now works and the performance seems reasonable (I need to do some more tuning) but when I go up to 4 x 48 cores I'm getting the same problem: [compute-1-7.local][[14383,1],86][../../../../../ompi/mca/btl/openib/connect/btl_openib_connect_oob.c:464:qp_create_one] error creating qp errno says Cannot allocate memory [compute-1-7.local:18106] *** An error occurred in MPI_Isend [compute-1-7.local:18106] *** on communicator MPI_COMM_WORLD [compute-1-7.local:18106] *** MPI_ERR_OTHER: known error not in list [compute-1-7.local:18106] *** MPI_ERRORS_ARE_FATAL (your MPI job will now abort) Any thoughts? Thanks, Rob -- Robert Horton System Administrator (Research Support) - School of Mathematical Sciences Queen Mary, University of London r.hor...@qmul.ac.uk - +44 (0) 20 7882 7345
