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HPC Allocations

A question that came up during one of the breakouts was how to determine how much resources to request when asking for an allocation on a machine, for example through NSF's XSEDE (https://www.xsede.org).  To help with that XSEDE offers startup allocations (https://portal.xsede.org/allocations/startup) which are very light weight allocation requests consisting of just an abstract, a CV of the PI, and a requested amount.  If you scroll down in the previous link they have a table with suggested amounts to ask for on each machine.  The idea is that with those resources you can try a machine out, in fact several as you can request access to multiple machines at once, and run your code to get a sense of which is the best fit and how much resources to request when putting in the full allocations request.