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dpzmick

HN member
Joined
Fri, Aug 21, 2015, 2:12 AM UTC
HN karma
39
Public activity
24 items

About dpzmick

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Recent public activity

  1. comment
    Comment #28404784

    > If so, what's y̶o̶u̶r̶ a use-case? CERN uses PTP on steroids for physics experiments: https://white-rabbit.web.cern.ch/

  2. comment
    Comment #27322609

    I believe there's a hint towards the end of the article: > Note: Perlmutter’s “AI performance” is based on Nvidia’s half-precision numerical format (FP16 Tensor Core) with Nvidia’s…

  3. comment
    Comment #25737486

    similar boxes are on amazon, with worse(ish) specs under the brand "Protectli "

  4. comment
    Comment #25421011

    this is a reasonable test: https://www.cs.virginia.edu/stream/ref.html but it's pretty straightforward to just copy giant buffers in order/out of order and squint really hard at th…

  5. comment
    Comment #24861575

    I too was confused by this. Bad naming!

  6. comment
    Comment #24789759

    I'm another user of the predecessor to Conducto. We're using it to orchestrate very large regression test (usually ~40-50k independent processes run as part of the regression testi…

  7. comment
    Comment #20711575

    I've been going with this style for things like reading files (with retries) or any sort of loop that feels awkward. while (1) { int ret = ...; if (ret == ...) break; if (ret == so…

  8. comment
    Comment #20590765

    in C, it items[0] could segfault, the fault could be caught by a signal handler which does some unbounded amount of work, then populates the appropriate memory location and returns…

  9. comment
    Comment #17859442

    Another option for interesting generative art would be generative music. There's tons of opensource audio/music generation software (ChucK, supercollider/overtone, csound, vcvrack)…

  10. comment
    Comment #14697029

    Very little is done with these values in the fast path. The application in question is basically a smart proxy that performs a very minimal amount of formatting. Most of the code i…

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  12. comment
    Comment #14696037

    Try compiling with c++11 turned on.

  13. comment
    Comment #14695884

    In this case, yes, optimizations don't appear to be giving me much of a win. Although, I'm very glad I checked! There are certainly some very realistic scenarios in which it would …

  14. comment
    Comment #14695830

    In this case I don't think that being clever can actually help us much. I have some microbenchmarks towards the end of the post that are not very indicative of any performance gain…

  15. comment
    Comment #14695807

    In the real world version of this problem the padding bytes contain some real values and the structs are both written straight to a network line (protocol is defined externally)

  16. comment
    Comment #14695792

    Thanks! I started with a fork of this Jekyll site: https://github.com/johnotander/pixyll so I can't take much credit for the design

  17. comment
    Comment #14695781

    I'll give that benchmark trick a try. Thanks for the feedback. For some additional context, these structs are packed wire-line protocol structs. In reality the padding bytes are fu…

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