Hi Adalberto,
To answer your question we need to get more information.
Could you please provide the command line and environment variables you set before mpirun.
Add "-env I_MPI_DEBUG 6" to the command line and send us the output (you can send a private message if don't want to share your information with all readers - see option "mark this post private" below).
Regards!
Dmitry
Problems with 512 cores or more.
Hello all! When I try to run an application with 512 cores (or more) I get this MPI error: [33] MPI startup(): ofa fabric is not available and fallback fabric is not enabled
I'm usingI_MPI_FABRICS=shm:ofa, but with DAPL I also get an MPI error. Using 256 cores or less I got no errors, it works like a charm. The system is a SGI cluster with quad-socket AMD Interlagos nodes (64 cores per node). Each node as two Infiniband ports and theI_MPI_OFA_NUM_PORTS=2 is enabled. Thank you in advance!