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Use distributed memory depending on your plaworm you

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Unformatted text preview: nection network not specified o༆  λ is not specified beyond λ>>1 -- cannot be because every machine is different o༆  Controller, combining network “optional” Source: Larry Snyder, CSEP524, UW Discuss logP paper here Closing note on logP •  Refinements have been proposed over Ime –  “Oh, if we also measured xyz, the model would be bemer!” –  e.g., logGP: takes “long messages” into account –  Challenge: when to stop? CSEP 524: Parallel ComputaIon Winter 2013: Chamberlain 63 Abstract Machine Model Summary: My Take PRAM: Too abstract/unrealisIc! logP: Too parameterized (?) –  or, perhaps most appropriate for low- level library writer CTA: The goldilocks soluIon? By analogy: Consider sequenIal programming in a cache- aware manner without worrying about an architecture’s precise… …latencies to access different levels of cache/memory …cache lines sizes …etc. It can yield a significant fracIon of peak performance, while remaining quite portable CSEP 524: Parallel ComputaIon...
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