The Merope Harpertown racks have been decommissioned to make way for a new version of Merope, which is now available with 512 Westmere nodes, a new front-end system (mfe1), and a new PBS server (pbspl233b).

When you run jobs on Merope, please note:

• Applications that generate a lot of I/O should not be run on Merope. I/O performance is lower on Merope than on Pleiades due to the limited bandwidth of the network between the facility that houses Merope and the main NAS building, where the Pleiades home and Lustre filesystems are located.
• The Merope PBS server will not start jobs that request :ncpus=N, where N is greater than 12.

For more information about the new Merope configuration, including how to connect and run PBS jobs, see the following Knowledge Base articles:

• Merope Configuration Details
• Preparing to Run on Merope

If you have any questions or concerns, please contact the NAS Control Room at (800) 331-8737, (650) 604-4444, or support@nas.nasa.gov.