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It appears that the configure script checks for AVX512 support. In my case, the OS and processor support, but I have an ancient version of GCC that doesn't yet have the AVX512 options. The configure s…
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While reading (to much) go generated assembly code I picked up a few x86 code sequences that seemed sub optimal. I do not remember where I had spotted each of them and some might just come from my ima…
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Looking through the repository, none of the configurations have `hardware.nvidia.powerManagement` configured. On my dell machine, I've been able several watts with;
```
hardware.nvidia = {
…
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root@EQ12:~# cpufetch; cpufetch --debug
[ERROR]: Unknown microarchitecture detected: M=0x0000000E EM=0x0000000B F=0x00000006 EF=0x00000000 S=0x00000000
Please, create a new issue with this error mes…
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#63871, which found a PSHUFB (v2+) not guarded by any instruction set checks in a crypto/tls dependency, shows that we are not testing GOAMD64=v1 terribly well. That is, it is possible to use newer in…
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_Note: the intent of this issue is to provide a reference and track the ongoing research, discussions, proposals, and implementation techniques employed by various browsers on how they expose or provi…
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I am using the Flatpak of Prism Launcher on Nobara Linux, with KDE Plasma on Wayland.
When running the game, I get the following crash report (click to open):
```
---- Minecraft Crash Repor…
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We use names that are (presumably) based on the specific microarchitecture where a feature was first introduced (e.g. avx512_sapphirerapids), but the apparently-standard extensions are much terser and…
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The idea is intuitive, though I'm not sure it was ever sounded in context of CLR JIT - why not use X/Y/ZMM registers for "hot" local variables to avoid stack memory accesses, just like common GP regis…
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@rsc recently added a `-spectre` flag to the compiler and implemented a couple of speculative execution exploit mitigations on amd64. These involved using conditional moves to prevent out of bounds in…