Error in cluster when trying to run in more than a single node

[FloatingFeather]

Hi. The cluster where I work started to have problems after the old administrator who worked at it leave the job.

I am trying to figure out what is causing that when a job is submitted on multiple nodes, problems appear.

error: executing task of job 68 failed: execution daemon on host "compute-0-2.local" didn't accept task
--------------------------------------------------------------------------
A daemon (pid 17063) died unexpectedly with status 1 while attempting
to launch so we are aborting.

There may be more information reported by the environment (see above).

This may be because the daemon was unable to find all the needed shared
libraries on the remote node. You may set your LD_LIBRARY_PATH to have the
location of the shared libraries on the remote nodes and this will
automatically be forwarded to the remote nodes.
--------------------------------------------------------------------------
--------------------------------------------------------------------------
mpirun noticed that the job aborted, but has no info as to the process
that caused that situation.
--------------------------------------------------------------------------


And even when running on a single node there is sort of a warning:

The OpenFabrics (openib) BTL failed to initialize while trying to
allocate some locked memory. This typically can indicate that the
memlock limits are set too low. For most HPC installations, the
memlock limits should be set to "unlimited". The failure occured
here:

Local host: compute-0-3.local
OMPI source: btl_openib_component.c:1200
Function: ompi_free_list_init_ex_new()
Device: mlx4_0
Memlock limit: 65536

You may need to consult with your system administrator to get this
problem fixed. This FAQ entry on the Open MPI web site may also be
helpful:

http://www.open-mpi.org/faq/?category=openfabrics#ib-locked-pages

--------------------------------------------------------------------------
--------------------------------------------------------------------------
WARNING: There was an error initializing an OpenFabrics device.

Local host: compute-0-3.local
Local device: mlx4_0

Does anyone know what could be causing this?

Thanks in advance.