Running on the Origins (Green, Fermat, Wren)

Interactive Work (Wren Only)

Wren, which has ten interactive CPU's, is the only interactive Origin system available to users. It is intended to be primarily a front-end to Fermat and Green and is not meant for running jobs, although short compile jobs can be run. Wren also provides a suitable platform for debugging work, e.g. using totalview.

Users should note that the default limit on the number of processes on wren is set to 8. This can be increased, up to a maximum of 24, using the following command on the command line.

You can put this command in your login file, but you must ensure you set it for wren only otherwise it will limit the processes that your batch jobs can use. For example for sh based shells:

For csh based shells: