Hi,The drmaa library seems suspect here, I am not sure what the current state of the Platform/IBM-supplied libdrmaa is but the vendor versions have given me problems in the past. Could you try FedStage DRMAA for LSF?:This does look a bit older than FedStage/PSNC's other DRMAA implementations but the FedStage/PSNC implementations have been known to work well in the past, and this library can also have debugging output enabled (./configure --enable-debug) if you get segfaults with it (and would be useful for producing cores).--nate