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Archives for August 2018

August 1, 2018, Filed Under: Computer Architecture, Computer Hardware, Performance

Why I hate MPI (from a performance analysis perspective)

According to Dr. Bandwidth, performance analysis has two recurring themes: How fast should this code (or “simple” variations on this code) run on this hardware? If I am analyzing (apparent) performance shortfalls, how can I distinguish between cause and effect? For very simple codes, it may be possible to do… read more 

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accelerated computing arithmetic cache communication configuration coprocessor Distributed cache DRAM Hash functions high performance computing Knights Landing memory bandwidth memory latency microprocessors MMIO MTRR Multicore processors Opteron STREAM benchmark synchronization TLB Virtual Memory Xeon Phi

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