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Aucbvax.6884 fa.info-vax utzoo!decvax!ucbvax!info-vax Thu Apr 22 21:31:40 1982 VAX Instruction timings >From Sibert.RDMS@MIT-MULTICS Thu Apr 22 21:23:48 1982 Recent traffic has made wonder once again, just how fast Vax instructions are executed. Is there any printed documentation on this subject? Benchmarks? Are there general rules which one can apply to get a rough idea? (Something like X for fixed point, add Y for three operands, add Z for every memory reference, etc.) Are the timings difficult to state because of pippelining and instruction overlap? Finally, are the timing characteristics of the 780, 750, and 730 roughly linear in relation, or are there great differences in relative speed of different functions?

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