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@eigenform
he/him (john), looking for work!! 👨💻 hacker friend 🦀 hw/fw/sw, uarch, security, rust, etc 🐘 @[email protected] 🌥️ @reflexive.space
reposting now that my twitter cards work! blog post about exploring the local branch predictor on my M2 MBP reflexive.space/apple-m2-bp/
this is crazy (spectrogram of training data vs reproduced) now you think about it, birds probably also feel "this is crazy" when they hear us talking to each other
Bird saves and reproduces data: A PNG image of a bird ( photo of a bird -> spectral synthesizer ) was reproduced by an adult Starling bird youtu.be/hCQCP-5g5bo?si…. It seems to have reproduced the sound in conjunction with some additional notes which made it not detectable…
(not exactly relevant to what Joseph is thinking about in the quoted thread here, but) i learned a little bit about this while playing with the single-threaded case github.com/eigenform/perf…
when a write hits in the icache, *presumably* a sibling thread is resynchronized (maybe entirely, or maybe everything before the dispatch stage?) but that's just the intuition. probably other corner-cases too (ie. side-effects on a BTB come to mind, see "branch type-confusion")
Taking measurement at a General Electric Turbine factory 1948
Exploiting Undefined Behavior in C/C++ Programs for Optimization: A Study on the Performance Impact web.ist.utl.pt/nuno.lopes/pub…
This is neat, using EntrySign to backport microcode patches to EOL systems without BIOS updates. github.com/divestedcg/rea…
I could be the paper ghost hanging from your tree; I could be the statue hiding underneath the sheet. A simulation of a soul, a fabricated death—I slip into your world's bowl and start to draw a breath