Abaqus on Rocks Cluster

[mcarrara3]

Hello everyone, here's my problem:
I am trying to run ABAQUS in parallel on a cluster using Rocks as OS.
When I launch the analysis on a single node everything works fine, but when I try to run it in parallel the simulation does start, it goes through Pre.exe and Package.exe, but just after Explicit.exe I get the following error:

Run explicit.exe
/usr/bin/xauth: error in locking authority file /home/mcarrara/.Xauthority
bash: /state/partition1/apps/abaqus611/6.11-1/External/mpi/hpmpi-2.3/bin/mpid: No such file or directory
bash: /state/partition1/apps/abaqus611/6.11-1/External/mpi/hpmpi-2.3/bin/mpid: No such file or directory
bash: /state/partition1/apps/abaqus611/6.11-1/External/mpi/hpmpi-2.3/bin/mpid: No such file or directory
mpirun: Warning one more more remote shell commands exited with non-zero status, which may indicate a remote access problem.
Killed by signal 15.
Killed by signal 15.
Killed by signal 15.

I think there's a problem with the .env file and the parallelization method. Any suggestion on how I can run the simulation in parallel with ABAQUS under Rocks cluster using ssh to access the nodes?

Thank you for your helpfulness.

Matteo