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geofflangdalegeofflangdale@mastodon.social
Oct 6, 2026, 4:45 AM
@regehr Beautiful stuff. I still think superoptimization is The Shit (non-pejorative). Very much a brutal wall of combinatorial explosions with modern architectures (trying to synthesize constants for GF2P8AFFINEQB and VPERMI2B will make you reconsider your life choices, as will all those irritating VNNI multiplies).
On a full "universe", 2 instructions is tough, 3 aspirational, 4 simply deranged.
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synlogic4242synlogic4242@vivaldi.net
Oct 6, 2026, 5:18 AM
@geofflangdale @regehr I'm writing a book on performance. I've added note to my research TODO to read that paper
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geofflangdalegeofflangdale@mastodon.social
Oct 6, 2026, 7:43 AM
@synlogic4242 @regehr well worth doing. There are a number of papers worth reading in that space, some written by people on this thread.
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synlogic4242synlogic4242@vivaldi.net
Oct 6, 2026, 8:20 AM
@geofflangdale @regehr will do. I aim to write a book at similar quality/value level as Brendan Gregg's Sys Perf, while at same time merely complimenting it not repeating or replacing it. big challenge, but exciting
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