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A python script has been developed to do the modeling. We are using "CPU factor" as the computing unit to account for differing oomphs of the various node types in the farm.
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Needs Estimation
PPA projects were polled for their projected needs over the next few years. This is recapped here. Fermi intends to use its allocation fully for the next 2 years; that allocation is sufficient. BABAR should start ramping down, but they do not yet project that ramp. KIPAC sees a need for about 1600 cores for the needs of its users, including MPI and DES. All other PPA projects are small in comparison to these two, perhaps totaling 500 cores. In terms of allocation units, taking Fermi and BABAR at their current levels and an average core being about 13 units, the current needs estimate is:
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