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pcwalton's profile
Patrick Walton
Patrick Walton
Patrick Walton
@pcwalton

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Patrick Walton

@pcwalton

Research engineer at Mozilla

San Francisco, CA
pcwalton.github.io
Joined November 2009

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    1. Jedd Haberstro‏ @jhaberstro Mar 21
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      Reading a bit about Go's goroutine scheduler. Sounds like it tries to solve many of the same problems a GPU's shader core does. # threads ("goroutines") >> # of simds ("OS threads"), fast switching, small stacks, minimal fairness, turn blocking calls into async calls.

      2 replies 1 retweet 6 likes
    2. Paul Khuong‏ @pkhuong Mar 21
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      Replying to @jhaberstro

      Yeah. Fibers work well enough for moving protobufs from here to there. Now bake that in the language. I'd love to see a hybrid of that and ISPC/bulk synchronous parallelism.

      1 reply 0 retweets 1 like
    3. Jedd Haberstro‏ @jhaberstro Mar 22
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      Replying to @pkhuong

      I'd love to see a CPU arch that optimizes for throughput over latency à la GPUs (i.e. eschews deep, highly predicted and reordered pipelines) without trying to optimize for data parallelism. I doubt there is much data parallelism among concurrent goroutines.

      1 reply 0 retweets 0 likes
      Patrick Walton‏ @pcwalton Mar 22
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      Replying to @jhaberstro @pkhuong

      The Cell? :)

      4:35 PM - 22 Mar 2020
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      2 replies 0 retweets 1 like
        1. Jedd Haberstro‏ @jhaberstro Mar 22
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          Replying to @pcwalton @pkhuong

          I assume you’re referring to Cell’s SPUs. From what I understand, they are SIMD cores with local SRAMs, no access to shared memory, that communicate via message passing and explicit DMAs. That not really what I’m envisioning.. :)

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        2. Paul Khuong‏ @pkhuong Mar 22
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          Replying to @pcwalton @jhaberstro

          More like barrel processors, I assume? (Tera MTA, that one funny PIC implementation, Cray's first version of the graph processing machine for the TLAs)

          1 reply 0 retweets 1 like
        3. Jedd Haberstro‏ @jhaberstro Mar 22
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          Replying to @pkhuong @pcwalton

          I haven’t heard of any of these! I’ll have to check these out :)

          0 replies 0 retweets 0 likes
        4. End of conversation

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