Question
using a spreadsheet When a program is adapted to run on multiple processors in a multiprocessor system, the execution time on each processor is comprised
using a spreadsheet When a program is adapted to run on multiple processors in a multiprocessor system, the execution time on each processor is comprised of computing time and the overhead time required for locked critical sections and/or to send data from one processor to another. Assume a program requires t = 100 s of execution time on one processor. When run p processors, each processor requires t/p s, as well as an additional 4 s of overhead, irrespective of the number of processors. Compute the per-processor execution time for 2, 4, 8, 16, 32, 64, and 128 2, 4, 6, 8, 12, 16, 24, 28, 32, 56, 64, 224, and 448 processors. For each case, list the corresponding speedup relative to a single processor and the ratio between actual speedup versus ideal speedup (speedup if there was no overhead). show a screenshot
(Note: those numbers of nodes are all real CPUs or at least multi CPU configurations you can buy for home/server/HPC systems).
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