The Daily Bulletin

For university researchers who are interested in or planning to apply for the upcoming large-scale Yellowstone allocation opportunities, Dave Hart, NCAR's User Services manager, will host an online Q&A session at 2 p.m. MST on Monday, March 2.

The session will include a brief description of the Yellowstone system, tips for writing successful allocation requests, and an opportunity to ask questions.

To call in to the meeting, please use the following:

Audio Dial-In Information, U.S & Canada: 866.740.1260

Access Code: 4971273

To join the meeting online and see the slides:

This session is an opportunity for potential requesters to ask questions about the system, eligibility requirements and writing allocation requests.

HPSS  Downtime Tuesday, March 3, 7:00am - 9:00am

No Scheduled Downtime:  Yellowstone, Geyser_Caldera, GLADE

CISL has two upcoming deadlines for large-scale allocation requests. Climate Simulation Laboratory requests are due March 23, and large requests from university researchers are due March 30.

The Climate Simulation Laboratory (CSL) is CISL's premier opportunity for researchers seeking high-performance computing and data storage systems to support extremely demanding, high-profile climate simulations. These long-running simulations typically require millions of core-hours to complete and usually produce many terabytes of model output that must be stored for analysis and comparison with other simulations and with observations. See the CSL web page for details.

Large allocations on Yellowstone are those for more than 200,000 core-hours. CISL accepts requests from university researchers for these large-scale allocations every six months. For submission instructions and information regarding available resources, see the the CISL HPC Allocations Panel (CHAP) page.

Please contact if you have any questions about the two opportunities or help determining which may be a better fit for your planned computational work.

You can personalize your Yellowstone supercomputing environment by creating or editing your startup files as shown in these examples on the CISL web site. The examples provide some commonly used aliases and alternative color schemes for customizing your interactive login shell.

Example revised: Please note that we have revised the example that showed inclusion of the current directory in your search path. While putting the “.” in your path is common practice, it presents some security risk and increases your chances of inadvertently executing the wrong script. Best practice for running a script from your current directory is to prepend ./ to the script name rather than having the directory always in your search path.