CHAP: May 2012 Meeting

The CISL HPC Advisory Panel (CHAP) met on 3 May 2012 to review and recommend allocations for computational requests from university researchers with an NSF award in the atmospheric or closely related sciences. The CHAP’s focus continues to be on the computational experiments being proposed and their efficiency.

There were 28 requests from university researchers requesting large allocations; 25 requests received an allocation. The requests showed that the university community was prepared to make full use of the petascale Yellowstone resource. Requests totalled 71.7M core-hours on Yellowstone, which represented 1.4 times the resources available. Requests ranged from a high of 25M core-hours to a low of 236k core-hours. The median request size was just under 700k core-hours. 

Approximately 36M Yellowstone core-hours were allocated by the CHAP with allocations ranging from 236k core-hours to 9.5M core-hours. The median allocation was 550k core-hours. While most requests received the bulk of the HPC core-hours they requested, the CHAP paid close attention to HPSS requests, asking for additional justification from all requests that asked for more than 20 TB.

The CHAP encourages all future university projects to consider the dramatic increase in available computing resources made possible with Yellowstone when preparing future allocation requests, but also to give due consideration to large-scale storage needs and plans.

The distribution of the May 2012 allocations is given in the chart below.

 CHAP May 2012 awards bar chart

Not shown on the chart are the small requests and allocations for the university research community. During the six months preceding the May 2012 panel meeting, 91 small allocations were made. 


CISL Presentations to CHAP

CISL Operations and Yellowstone Update (Anke Kamrath, CISL)
Early Experiences with the Janus Cluster (Rich Loft, CISL)
Yellowstone Allocations and Access Schedule (David Hart, CISL)

CHAP Advisory Letter

May 2012 (PDF)


CHAP Agenda

Thursday, May 3, 2012
VisLab (1st Basement), Mesa Lab
1850 Table Mesa Drive, Boulder, CO

7:30 a.m. Continental Breakfast
8:00 a.m. Welcome and introductions (Chair)
8:15 a.m. CISL Operations and Yellowstone Update (Anke Kamrath, CISL)
9:00 a.m. Early Experiences with the Janus Cluster (Rich Loft, CISL)
9:45 a.m. Yellowstone Allocations and Access Schedule (David Hart, CISL)
10:30 a.m. break
11:00 a.m. Panel discusison and set date for next meeting
 11:30 a.m. Review of allocation process and the CHAP COI (Chair)
11:45 a.m. Review of allocation requests
12:30 p.m. lunch
1:30 p.m. Reconvene for review of allocation requests
3:15 p.m. break
5:00 p.m. Adjourn