[Gate-users] Running gate on multiple CPUs and SPECTbenchmark

[Badger, Daniel (TQEH)]

I've finally got Gate installed and running, and it's running the PET
benchmark.

I'm planning to simulate SPECT, so I tried to run the SPECT benchmark,
but it crashed with the following error:
"Illegal parameter (0) </vis/open OGLSX>"
Any ideas? 

I notice that it's only running on one core (We have 2x Opteron 2216
dual core cpus).
Is there a switch or simple way to use all 4 cpus, or do I need to use
the cluster mode I'm reading about in the user manual?