Hello I have compiled openmpi-1.2.3 with the --with-mx=<directory> configuration and gcc compiler. On testing with 4-8 slots I get an error message, the mx ports are busy:
>mpirun --mca btl mx,self -np 4 ./cpi [node001:10071] mca_btl_mx_init: mx_open_endpoint() failed with status=20 [node001:10074] mca_btl_mx_init: mx_open_endpoint() failed with status=20 [node001:10073] mca_btl_mx_init: mx_open_endpoint() failed with status=20 ------------------------------------------------------------------------ -- Process 0.1.0 is unable to reach 0.1.1 for MPI communication. If you specified the use of a BTL component, you may have forgotten a component (such as "self") in the list of usable components. ... snipped It looks like MPI_INIT failed for some reason; your parallel process is likely to abort. There are many reasons that a parallel process can fail during MPI_INIT; some of which are due to configuration or environment problems. This failure appears to be an internal failure; here's some additional information (which may only be relevant to an Open MPI developer): PML add procs failed --> Returned "Unreachable" (-12) instead of "Success" (0) ------------------------------------------------------------------------ -- *** An error occurred in MPI_Init *** before MPI was initialized *** MPI_ERRORS_ARE_FATAL (goodbye) mpirun noticed that job rank 0 with PID 10071 on node node001 exited on signal 1 (Hangup). I would not expect mx messages as communication should not go through the mx card? (This is a twin dual core shared memory node) The same happens when testing on 2 nodes, using a hostfile. I checked the state of the mx card with mx_endpoint_info and mx_info, they are healthy and free. What is missing here? Thanks Henk
