Computers and Technology, 18.02.2020 17:37 ssargeant2559
When a program is adapted to run on multiple processors, the execution time on each processor comprised of computing time and the overhead required for locked critical sections and/or to send data from one processor to another. Assume a processor requires t=100s of execution time on one processor. When run on p processors, each processor requires t/p second as well as an additional 4s overhead, irrespective of the number of processors. Compare the per-processor execution time for 2, 4, 8, 16, 32, 64 and 138 processors. For each case, compute the speedup relative to a single processor and the ratio of actual speedup versus ideal speedup (speedup when there is no overhead).
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When a program is adapted to run on multiple processors, the execution time on each processor compri...
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