gaytabasedysfun@treehouse.systems
Oct 14, 2026, 9:59 AM@flippac what if i told you it's not the benchmarks that went into the paper? it's testing the performance of the pext primitive used by the HOT they compare against.
Replies
Philippa Cowderoyflippac@types.plOct 14, 2026, 10:01 AM@dysfun then I might not seek to have the paper retracted without actual data of my own ;)
but extremely in "if you don't know how to do it adequately yourself..." and "if you can't be arsed to do it yourself..." territory
- gaytabasedysfun@treehouse.systemsOct 14, 2026, 10:05 AM
@flippac i mean, i think they knew how to do this https://github.com/m-mueller678/btree-cpp/blob/sigmod25/pext_bench/pext.cpp
but they could have gotten that information quicker from uops.info. they do benchmark on amd in the paper, but it's newer than zen 2 so not microcoded and obscenely slow.
- Philippa Cowderoyflippac@types.plOct 14, 2026, 10:07 AM
@dysfun yeah: some of what I'm saying is normative rather than strictly factual judgment
(also, people love to forget that the current generation of consoles-not-hybrids are on zen 2 still)
- gaytabasedysfun@treehouse.systemsOct 14, 2026, 10:08 AM
@flippac i'm on zen2 still.