[mpich-discuss] mpiexec and DISPLAY for remote hosts

[Isaila, Florin D.]

Hi,

I am having troubles running mpiexec (from MPICH 3.1) on remote hosts with xterm (for debugging purposes) from an Ubuntu box.

The following command works perfectly in local:
mpiexec -n 1 xterm

However, if I use a machine file:
mpiexec -f macfile -n 1 xterm
xterm Xt error: Can't open display:
xterm:  DISPLAY is not set

===================================================================================
=   BAD TERMINATION OF ONE OF YOUR APPLICATION PROCESSES
=   PID 19225 RUNNING AT thwomp.mcs.anl.gov
=   EXIT CODE: 1
=   CLEANING UP REMAINING PROCESSES
=   YOU CAN IGNORE THE BELOW CLEANUP MESSAGES
===================================================================================

X forwarding is activated:
fisaila at howard:bin$ grep X11Forwarding /etc/ssh/sshd_config
X11Forwarding yes

The following command works:
fisaila at howard:bin$ ssh thwomp.mcs.anl.gov xterm

Any suggestion how to solve this?

Thanks
Florin


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