hi I have installed mpich2 via: apt-get install mpich2 mpich-bin mpich2-doc and hydra via: apt-get install hydra and I want to run hpcc on two nodes. When I enter: localadmin@ubuntu-benchmark01:~/hpcc-1.4.2$ mpiexec -f hosts2 -n 2 ./hpcc I receive the following error: ===================================================================================== = BAD TERMINATION OF ONE OF YOUR APPLICATION PROCESSES = EXIT CODE: 139 = CLEANING UP REMAINING PROCESSES = YOU CAN IGNORE THE BELOW CLEANUP MESSAGES ===================================================================================== [proxy:0:1@ubuntu-benchmark02] HYD_pmcd_pmip_control_cmd_cb (./pm/pmiserv/pmip_cb.c:928): assert (!closed) failed [proxy:0:1@ubuntu-benchmark02] HYDT_dmxu_poll_wait_for_event (./tools/demux/demux_poll.c:77): callback returned error status [proxy:0:1@ubuntu-benchmark02] main (./pm/pmiserv/pmip.c:226): demux engine error waiting for event [mpiexec@ubuntu-benchmark01] HYDT_bscu_wait_for_completion (./tools/bootstrap/utils/bscu_wait.c:70): one of the processes terminated badly; aborting [mpiexec@ubuntu-benchmark01] HYDT_bsci_wait_for_completion (./tools/bootstrap/src/bsci_wait.c:23): launcher returned error waiting for completion [mpiexec@ubuntu-benchmark01] HYD_pmci_wait_for_completion (./pm/pmiserv/pmiserv_pmci.c:191): launcher returned error waiting for completion [mpiexec@ubuntu-benchmark01] main (./ui/mpich/mpiexec.c:405): process manager error waiting for completion Would you mind please help me solve the problem? Regards, Reza