Skip to content
By using Twitter’s services you agree to our Cookies Use. We and our partners operate globally and use cookies, including for analytics, personalisation, and ads.
  • Home Home Home, current page.
  • About

Saved searches

  • Remove
  • In this conversation
    Verified accountProtected Tweets @
Suggested users
  • Verified accountProtected Tweets @
  • Verified accountProtected Tweets @
  • Language: English
    • Bahasa Indonesia
    • Bahasa Melayu
    • Català
    • Čeština
    • Dansk
    • Deutsch
    • English UK
    • Español
    • Filipino
    • Français
    • Hrvatski
    • Italiano
    • Magyar
    • Nederlands
    • Norsk
    • Polski
    • Português
    • Română
    • Slovenčina
    • Suomi
    • Svenska
    • Tiếng Việt
    • Türkçe
    • Ελληνικά
    • Български език
    • Русский
    • Српски
    • Українська мова
    • עִבְרִית
    • العربية
    • فارسی
    • मराठी
    • हिन्दी
    • বাংলা
    • ગુજરાતી
    • தமிழ்
    • ಕನ್ನಡ
    • ภาษาไทย
    • 한국어
    • 日本語
    • 简体中文
    • 繁體中文
  • Have an account? Log in
    Have an account?
    · Forgot password?
    New to Twitter?
    Sign up
marcan42's profile
Hector Martin
Hector Martin
Hector Martin
@marcan42

Tweets

Hector Martin

@marcan42

If it ain't broke, I'll fix it! I'm porting Linux to Apple Silicon Macs at @AsahiLinux. http://patreon.com/marcan  | http://github.com/sponsors/marcan 

Tokyo, Japan
marcan.st
Joined May 2009

Tweets

  • © 2021 Twitter
  • About
  • Help Center
  • Terms
  • Privacy policy
  • Imprint
  • Cookies
  • Ads info
Dismiss
Previous
Next

Go to a person's profile

Saved searches

  • Remove
  • In this conversation
    Verified accountProtected Tweets @
Suggested users
  • Verified accountProtected Tweets @
  • Verified accountProtected Tweets @

Promote this Tweet

Block

  • Tweet with a location

    You can add location information to your Tweets, such as your city or precise location, from the web and via third-party applications. You always have the option to delete your Tweet location history. Learn more

    Your lists

    Create a new list

    Under 100 characters, optional
    Privacy

    Copy link to Tweet

    Embed this Tweet

    Embed this Video

    Add this Tweet to your website by copying the code below. Learn more

    Add this video to your website by copying the code below. Learn more

    Hmm, there was a problem reaching the server.

    By embedding Twitter content in your website or app, you are agreeing to the Twitter Developer Agreement and Developer Policy.

    Preview

    Why you're seeing this ad

    Log in to Twitter

    · Forgot password?
    Don't have an account? Sign up »

    Sign up for Twitter

    Not on Twitter? Sign up, tune into the things you care about, and get updates as they happen.

    Sign up
    Have an account? Log in »

    Two-way (sending and receiving) short codes:

    Country Code For customers of
    United States 40404 (any)
    Canada 21212 (any)
    United Kingdom 86444 Vodafone, Orange, 3, O2
    Brazil 40404 Nextel, TIM
    Haiti 40404 Digicel, Voila
    Ireland 51210 Vodafone, O2
    India 53000 Bharti Airtel, Videocon, Reliance
    Indonesia 89887 AXIS, 3, Telkomsel, Indosat, XL Axiata
    Italy 4880804 Wind
    3424486444 Vodafone
    » See SMS short codes for other countries

    Confirmation

     

    Welcome home!

    This timeline is where you’ll spend most of your time, getting instant updates about what matters to you.

    Tweets not working for you?

    Hover over the profile pic and click the Following button to unfollow any account.

    Say a lot with a little

    When you see a Tweet you love, tap the heart — it lets the person who wrote it know you shared the love.

    Spread the word

    The fastest way to share someone else’s Tweet with your followers is with a Retweet. Tap the icon to send it instantly.

    Join the conversation

    Add your thoughts about any Tweet with a Reply. Find a topic you’re passionate about, and jump right in.

    Learn the latest

    Get instant insight into what people are talking about now.

    Get more of what you love

    Follow more accounts to get instant updates about topics you care about.

    Find what's happening

    See the latest conversations about any topic instantly.

    Never miss a Moment

    Catch up instantly on the best stories happening as they unfold.

    1.  ☃️‏ @AbeSnowman 19 Feb 2019
      • Report Tweet
      • Report NetzDG Violation
      Replying to @AbeSnowman @whitequark @hedgeberg

      Ok, having to hit my Archive - this was the project before I drowned the Skull Canyon.pic.twitter.com/5gbMwiD8Bb

      1 reply 0 retweets 1 like
    2.  ☃️‏ @AbeSnowman 19 Feb 2019
      • Report Tweet
      • Report NetzDG Violation
      Replying to @AbeSnowman @whitequark @hedgeberg

      But I do remember a detail that eliminated my confusion - it was an NVMe adapter which used a proprietary cable to connect to the card slot - Thunderbolt was the _other_ option on the platform for eGPU. I went what I thought was the harder road.

      3 replies 0 retweets 1 like
    3.  ☃️‏ @AbeSnowman 19 Feb 2019
      • Report Tweet
      • Report NetzDG Violation
      Replying to @AbeSnowman @whitequark

      pic.twitter.com/CpxGwmlykf

      1 reply 0 retweets 1 like
    4. whitequark‏ @whitequark 19 Feb 2019
      • Report Tweet
      • Report NetzDG Violation
      Replying to @AbeSnowman @hedgeberg

      Yeah it's a hacky piece of shit. Thunderbolt doesn't run over normal USB 3 A/B connections at all. Neither does PCIe; they abuse the GND and VCC pins for sideband signals, and use cable shield for ground.

      1 reply 0 retweets 4 likes
    5. whitequark‏ @whitequark 19 Feb 2019
      • Report Tweet
      • Report NetzDG Violation
      Replying to @whitequark @AbeSnowman @hedgeberg

      But this all works well for you because PCIe is actually brilliant on every level. You could probably run it over barbed wire. The same cannot be said about Thunderbolt in the slightest.

      3 replies 0 retweets 9 likes
    6. hedge.txt | Mostly Inactive, except when not‏ @hedgeberg 19 Feb 2019
      • Report Tweet
      • Report NetzDG Violation
      Replying to @whitequark @AbeSnowman

      To paraphrase @marcan42, iirc: "you could run pcie over different lengths of wet string"

      1 reply 0 retweets 7 likes
    7. Hector Martin‏ @marcan42 19 Feb 2019
      • Report Tweet
      • Report NetzDG Violation
      Replying to @hedgeberg @whitequark @AbeSnowman

      I don't think I went as far as *different* lengths of wet string... but yeah :-)

      2 replies 0 retweets 8 likes
    8.  ☃️‏ @AbeSnowman 19 Feb 2019
      • Report Tweet
      • Report NetzDG Violation
      Replying to @marcan42 @hedgeberg @whitequark

      Conductivity aside, that would create Hopper-like delays in the signal lines, yes?

      1 reply 0 retweets 0 likes
    9. hedge.txt | Mostly Inactive, except when not‏ @hedgeberg 19 Feb 2019
      • Report Tweet
      • Report NetzDG Violation
      Replying to @AbeSnowman @marcan42 @whitequark

      Pcie spec involves relatively robust link training so that it's safely independent of the physical medium. As a result, it's capable of running over just about anything that's conductive.

      1 reply 0 retweets 1 like
    10. whitequark‏ @whitequark 19 Feb 2019
      • Report Tweet
      • Report NetzDG Violation
      Replying to @hedgeberg @AbeSnowman @marcan42

      It doesn't include FEC so you have to have a reasonably low BER. I don't think it would work over literal wet string, for example.

      2 replies 0 retweets 2 likes
      Hector Martin‏ @marcan42 19 Feb 2019
      • Report Tweet
      • Report NetzDG Violation
      Replying to @whitequark @hedgeberg @AbeSnowman

      Yeah, I was exaggerating. But it does work over rather unorthodox wiring, like that USB3 cable thing, or soldering down some fly-wires, or ribbon cables (at least at short distances).

      2:49 AM - 19 Feb 2019
      • 1 Like
      • ☃️
      2 replies 0 retweets 1 like
        1. New conversation
        1. whitequark‏ @whitequark 19 Feb 2019
          • Report Tweet
          • Report NetzDG Violation
          Replying to @marcan42 @hedgeberg @AbeSnowman

          It trains the 4x link at 8 GT/s over floppy cable here, but then it observes errors and I think drops it a bit. Maybe if the extender used UDMA cable instead of floppy cable it'd actually work well.

          1 reply 0 retweets 5 likes
        2. whitequark‏ @whitequark 19 Feb 2019
          • Report Tweet
          • Report NetzDG Violation
          Replying to @whitequark @marcan42 and

          But yeah "I can't get 50 fps over floppy cable, it caps out at something like 20 fps" is a very good complaint to have about your 8 GB/s combined throughput serial interface.

          1 reply 1 retweet 8 likes
        3. Show replies
        1. Ridley @ a safe distance‏ @11rcombs 19 Feb 2019
          • Report Tweet
          • Report NetzDG Violation
          Replying to @marcan42 @whitequark and

          wonder if it'd work over the "coax shoved into BNC connectors without crimping" I was doing 1.5Gbaud serial over this past weekend

          0 replies 0 retweets 1 like
          Thanks. Twitter will use this to make your timeline better. Undo
          Undo

      Loading seems to be taking a while.

      Twitter may be over capacity or experiencing a momentary hiccup. Try again or visit Twitter Status for more information.

        Promoted Tweet

        false

        • © 2021 Twitter
        • About
        • Help Center
        • Terms
        • Privacy policy
        • Imprint
        • Cookies
        • Ads info