Quote: suggestions for improving low-level performance; careful of inner loops, parallelism, setup

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Following are some general [performance] issues to be … -- Unroll loops. … -- Avoid intrinsically expensive instructions … For example, on a Pentium, a variable rotate/shift … requires four clocks and cannot be paired with … -- Limit the number of variables. … -- Limit table size. … -- Allow parallelism. The general idea is to … [concurrently] … [p. 246] -- Allow setup time for table indexing … . [p. 248] [For example,] use the previous value of … for lookahead computation.   Google-1   Google-2

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Topic: efficiency (96 items)