The CRC hardware and batch queuing software is continuously evolving. The following commands for the Sun Grid Engine queuing software will help you locate suitable queues and architectures.
The 'qconf' command will provide you with a list of available parallel queues.
You can then inspect the properties of that queue with the following command
qconf -sq queuename
In your job submission script you can use wild cards to specify multiple parallel environments. For example:
#!/bin/csh #$ -pe mpi* 16