Yellowstone now available to all users as of November 26

December 4, 2012

CISL is pleased to announce that all users now have access to the Yellowstone system starting Monday, November 26. Based on feedback from early users and after completing major system updates, we are making a portion of the system available to all users for porting, testing, and preparing for the transition from Bluefire while we continue to improve the Yellowstone user experience.

Initially, general users will have access to approximately 648 nodes (10,368 cores) and can only submit jobs to the *economy* queue. Once CISL and IBM have completed further evaluation of the overall system's stability and some planned performance tests, we will lift these restrictions.

During Yellowstone's first two months, most of the system will be dedicated to supporting the 11 Accelerated Scientific Discovery (ASD) projects [] as they tackle major challenges in the geosciences. However, approximately 4 percent of the system -- roughly equivalent to the computational capacity of Bluefire -- will be available for other users to port their codes and conduct testing and small-scale runs.

For Bluefire users, CISL has provided a transition guide that highlights some key differences you will encounter on Yellowstone [] and a quick-start guide [] as part of the system documentation. Due to the possible high volume of requests, users are strongly encouraged to consult the Yellowstone documentation prior to submitting help requests.

We emphasize that Yellowstone is still a work in progress, and CISL and IBM are continuing to refine the user environment, install additional software, and resolve system problems that cause jobs to fail. Furthermore, the Geyser and Caldera clusters do not yet have their full complement of analysis and visualization software installed.

If you have any problems with the system or a request for software be installed, please send help requests to We are particularly interested in learning about any job failures you may experience; please include system error messages in your help request.