Re:Writing the Fastest Code, by Hand, for Fun (2005)
by chubot on Friday May 11, 2012 @12:28PM
(#3959999)
The page says its portable across a few processors. I'm curious if there is much that is portable or if each one has to be optimized separately. I'm also curious how long code like this lasts. If the chip vendor changes their underlying architecture does the code have to be rewritten (for speed, ot correctness)?
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Re:Writing the Fastest Code, by Hand, for Fun (2005)
by gcp on Friday May 11, 2012 @12:52PM
(#3960121)
The TLB optimizations that he started from are fairly generic. But the kernels themselves are hand-optimized assembly, so they obviously don't port. No need to rewrite for correctness, only for speed.