I'll just C&P Stanford's blurb here so's you don't have to search FAQs.
The purpose of the SMP client is twofold: to take advantage of the high-performance capabilities of recent multiprocessor systems and to help develop a simulation architecture that will become one of the dominant FAH computing paradigms as multi-core chips become an industry standard over the next several years. High-performance clients enable us to run types of calculations that would be impractical on our standard architecture--calculations that enhance our scientific capabilities, and your scientific contributions, significantly.
High-performance clients often require more computing resources. SMP clients typically run on dedicated systems, 24 hours a day, and use more processing power, more disk space, more network resources, more system memory, etc. Also, a major part of the scientific benefit is dependent on rapid turnaround of work units; hence we assign short deadlines for SMP work units. To reward those contributors for donating resources beyond the typical CPU client, for completing these work units very quickly within the short deadlines, and for contributing to the development of our next-generation capabilities, we currently set a benchmark value (with included bonus*) proportional to these larger more demanding SMP work units. Without the SMP clients and your additional contributions, we would not be able to complete many important projects. *Please note the bonus value is subject to change.
Turnaround time is three days, and you may not want to run 24/7. If you do, you can get about 1.6K PPD on a quad.
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