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4/14/14. Czarek: It looks like the slowest cpu E5-2620v2 2.1GHz has the best price performance ratio but anyway I would not buy the slowest cpu. Right now in Gdansk we are buying 10 servers and we decided to go for 10-core cpus E5-2670v2 2.5Ghz (20 cores per node). As in matrix in Gdansk we have only slow interconnect between nodes and some programs can run efficiently only on single node so more cores per node gives for such program advantage. Other programs both in Gdansk and on matrix just need the highest possible total performance and exchange very little data between nodes so than number of cores is not important. What about space restriction ? Is it better to buy smaller number of faster nodes ?

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Decisions considered

Decision 1: Storage of users' data

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