A publication of the Office of Advanced Simulation & Computing, NNSA Defense Programs
NA-ASC-500-07—Issue 3
May 2007
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ASC Purple Capability System Completes First Cycle Under New Usage Governance Model
Because a capability class system is similar in value and uniqueness to a large experimental facility, a governance model was set up in 2005 to allocate cycles on ASC Purple as an ongoing series of six-month campaigns. ASC Purple completed its first six months operating as a national user facility on April 16, 2007. In this first effort, ASC Purple supported three tier-one Capability Computing Campaigns (CCCs). Each campaign received significant cycles on the Purple system to meet important ASC programmatic deliverables. Technical leads for these CCCs will soon be reporting to ASC headquarters on accomplishments and lessons learned. In addition, the process to award the second round of CCC allocations on Purple is now under way. The Campaign 2 call has resulted in 20 proposals from across the three defense laboratories; the proposals are now being prioritized. ASC hopes to begin Campaign 2 on May 29, 2007.
The ASC Purple capability system at Lawrence Livermore is the only ASC system to be managed under this governance model. Major ASC Purple programmatic computing efforts are organized as computing work packages or CCCs and are reviewed and prioritized for relevance, importance, and technical rationale. Each proposed CCC consists of at least one major calculation needing a significant proportion of an ASC capability system, together with related supporting jobs of smaller sizes. The objectives of the governance model are twofold: to ensure capability system resources were allocated on a priority-driven basis according to program requirements and to use ASC capability systems to run the large capability jobs for which the systems were designed and procured.
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