Open MPI logo

Open MPI User's Mailing List Archives

  |   Home   |   Support   |   FAQ   |   all Open MPI User's mailing list

From: Emanuel Ziegler (eziegler_at_[hidden])
Date: 2006-03-15 18:29:04


Hi Davide!

You are using the -prefix option. I guess this is due to the fact that You
cannot set the paths appropriately. Most likely You are using rsh for
starting remote processes.

This causes some trouble since the environment offered by rsh lacks many
things that a usual login environment offers (e.g. the path is hardcoded
and cannot be changed).

Checking with
    mpirun -np 2 -prefix /usr/local /bin/bash -c ulimit -l
may result in reporting plenty of memory (according to Your settings) but
this is not reliable since the new bash instance sets the limits
differently.
Unfortunately
    mpirun -np 2 -prefix /usr/local ulimit -l
does not work, since mpirun expects an executable. So the only way to
check is to run rsh directly like
    rsh remotenode ulimit -l
(where remotenode has to be replaced by the name of the remote host). This
may give a different result (e.g. 32 which is way too small). In my case
this problem was solved by adding
    session required pam_limits.so
at the end of the file "/etc/pam.d/rsh".

In case of ssh check the file "/etc/pam.d/ssh" for a line similar to the
one above and add it if it does not yet exist.

Hope that helps,
    Emanuel