sorry for giving such little information. ok here is the output after a long hang (which sometimes comes out) ================START OF OUTPUT===================== linaro@weiser1:/mnt/nfs/jahanzeb/bench/hpl/hpl-2.1/bin/armv7-a$ mpirun -np 8 -machinefile machines ./xhp l Fatal error in MPI_Send: A process has failed, error stack: MPI_Send(171)..............: MPI_Send(buf=0xbe84fc50, count=1, MPI_INT, dest=0, tag=9001, MPI_COMM_WORLD ) failed MPID_nem_tcp_connpoll(1826): Communication error with rank 0: Connection refused =================================================================================== = BAD TERMINATION OF ONE OF YOUR APPLICATION PROCESSES = EXIT CODE: 1 = CLEANING UP REMAINING PROCESSES = YOU CAN IGNORE THE BELOW CLEANUP MESSAGES =================================================================================== [proxy:0:0@weiser1] HYD_pmcd_pmip_control_cmd_cb (./pm/pmiserv/pmip_cb.c:886): assert (!closed) failed [proxy:0:0@weiser1] HYDT_dmxu_poll_wait_for_event (./tools/demux/demux_poll.c:77): callback returned error status [proxy:0:0@weiser1] main (./pm/pmiserv/pmip.c:206): demux engine error waiting for event [mpiexec@weiser1] HYDT_bscu_wait_for_completion (./tools/bootstrap/utils/bscu_wait.c:76): one of the processes terminated badly; aborting [mpiexec@weiser1] HYDT_bsci_wait_for_completion (./tools/bootstrap/src/bsci_wait.c:23): launcher returned error waiting for completion [mpiexec@weiser1] HYD_pmci_wait_for_completion (./pm/pmiserv/pmiserv_pmci.c:217): launcher returned error waiting for completion [mpiexec@weiser1] main (./ui/mpich/mpiexec.c:331): process manager error waiting for completion ================ENDOF OUTPUT===================== On Fri, Jun 28, 2013 at 11:39 AM, Pavan Balaji <[email protected]> wrote:

On 06/27/2013 09:36 PM, Syed. Jahanzeb Maqbool Hashmi wrote:

...

I am trying to run HPL on a cluster of nodes. The problem I am facing is with mpich, as I have successfully configured mpich. The program runs on single node without passing -machinefile argument. But as long as I execute of multiple nodes (-machinefile nodes) then the program hangs on indefinitely right after issuing the command.

Given how little information you have provided, here's the only response I can give:

You are doing something wrong.

-- Pavan

-- Pavan Balaji http://www.mcs.anl.gov/~balaji