Author: Ed Sperling for Forbes
“The problem may not be evident at two, four or even eight multicore computer processors. But when an application is written to take advantage of eight cores and the next iteration of that processor has 20 cores, the vast majority of applications will continue to take advantage of only eight cores.
Moreover, even if an application is rewritten to utilize all 20 cores, the performance gains will be lower than a decade ago when the clock speed was doubled on a single core processor. And that’s a best-case scenario. A word processing application threaded for 20 cores will not run much faster than a version that uses one or two cores.”
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1 Is there enough inherent parallelism in applications? // Nov 4, 2008 at 11:39 am
[...] response to Ed Sperling’s article titled, “Why Apps Can’t Run Faster“, Steve Reinhardt expresses his views in this blog [...]