On Apr 23, 2014, at 4:41 PM, "Antonio J. Peña" <[email protected]> wrote:

We use to encourage users to set up password-less ssh access by means of private/public key access. There are plenty of web pages with tutorials for this setup. This is just a random one: http://stackoverflow.com/questions/7260/how-do-i-setup-public-key-authentica...

Antonio

Thanks Antonio. I just did that. Now I'm able to use this setup: $ cat machinefile 198.125.163.212:2 to run on my login VM with IP=212: $ mpiexec -f machinefile -n 2 ./examples/cpi Process 0 of 2 is on mpi-be6bebee-55e3-4901-a5bb-637395ba46f6 Process 1 of 2 is on mpi-be6bebee-55e3-4901-a5bb-637395ba46f6 pi is approximately 3.1415926535899388, Error is 0.0000000000001457 wall clock time = 0.003566 But if I add the remote host to the machine list: $ cat machinefile2 198.125.163.212:2 198.125.163.207:2 Then some socket is not connected (see attached dump) Do I need to enable some specific ports so IP2012 talks to IP=207? Is it just port 42548 ? TPC? UDP? a range of ports? Do they need to be open on both the master & the worker? Jan ----- [cosy11@mpi-be6bebee-55e3-4901-a5bb-637395ba46f6 mpich-3.1]$ mpiexec -f machinefile2 -n 4 ./examples/cpi [proxy:0:1@mpi-966f395e-bbb1-4a20-8cbc-c10081e91244] HYDU_sock_connect (utils/sock/sock.c:138): unable to get host address for mpi-be6bebee-55e3-4901-a5bb-637395ba46f6 (1) [proxy:0:1@mpi-966f395e-bbb1-4a20-8cbc-c10081e91244] main (pm/pmiserv/pmip.c:189): unable to connect to server mpi-be6bebee-55e3-4901-a5bb-637395ba46f6 at port 42548 (check for firewalls!) ^C[mpiexec@mpi-be6bebee-55e3-4901-a5bb-637395ba46f6] Sending Ctrl-C to processes as requested [mpiexec@mpi-be6bebee-55e3-4901-a5bb-637395ba46f6] Press Ctrl-C again to force abort [mpiexec@mpi-be6bebee-55e3-4901-a5bb-637395ba46f6] HYDU_sock_write (utils/sock/sock.c:286): write error (Bad file descriptor) [mpiexec@mpi-be6bebee-55e3-4901-a5bb-637395ba46f6] HYD_pmcd_pmiserv_send_signal (pm/pmiserv/pmiserv_cb.c:169): unable to write data to proxy [mpiexec@mpi-be6bebee-55e3-4901-a5bb-637395ba46f6] ui_cmd_cb (pm/pmiserv/pmiserv_pmci.c:79): unable to send signal downstream [mpiexec@mpi-be6bebee-55e3-4901-a5bb-637395ba46f6] HYDT_dmxu_poll_wait_for_event (tools/demux/demux_poll.c:76): callback returned error status [mpiexec@mpi-be6bebee-55e3-4901-a5bb-637395ba46f6] HYD_pmci_wait_for_completion (pm/pmiserv/pmiserv_pmci.c:198): error waiting for event [mpiexec@mpi-be6bebee-55e3-4901-a5bb-637395ba46f6] main (ui/mpich/mpiexec.c:336): process manager error waiting for completion