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crest

1734

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2013-02-01

Created

Recent Activity

  • RISC-V lacks a bunch of really useful relatively easy to implement instructions and most extensions are truly optional so you can't rely on them. That's the problem if you let a bunch of academics turn your ISA into a paper mill.

    In theory you can spend a lot of effort to make a flawed ISA perform, but it will be neither easy nor pretty e.g. real world Linux distros can't distribute optimised packages for every uarch from dual-issue in-order RV64GC to 8-wide OoO RV64 with all the bells and whistles. Only in (deeply) embedded systems can you retarget the toolchain and optimise for each damn architecture subset you encounter.

  • One crazy detail about the Pentium 4 is that even at 3.2GHz the simple integer ALUs ran at twice the clock speed. Which allows the cursed thing to run two add with carry instructions per cycle.

  • A Chinese company saying you don't need encryption. Why should anyone waste time debunking their bad faith "arguments"?

  • But won't anyone think of the little children?!? The US president and his close friends sure do. /s

  • It's nice to see people sharing their mistakes too.

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