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stevelauc
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@SteveLauC

stevelauc

@SteveLauC
Ailurophile, bike lover (gravel cycling/mountain biking), coffee drinker (mostly Americano), and open-source enthusiast. Enjoying hacking Postgres
github.com/SteveLauC
Joined April 2020
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  • @SteveLauC
    stevelauc
    @SteveLauC
    20h
    现在做 Spark 加速/重写的项目好像还挺多的: * apache/gluten: 换执行引擎到 Clickhouse/Vortex * apache/datafusion-commet: worker 换成 DataFusion * apache/auron: 也用 DataFusion,没细看怎么用 * lakehq/sail: Rust 重写,用 DataFusion
    2
  • @SteveLauC
    stevelauc
    @SteveLauC
    Sep 7
    感觉在我的墨水屏上也可以玩
    @EvanMilenko
    Evan
    Pirate Wires
    @EvanMilenko
    Sep 4
    Fable 5.1 + Opus 5
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  • @SteveLauC
    stevelauc
    @SteveLauC
    Sep 5
    Code is cheap 啊,1300万代码。Clickhouse 有 900 万行,Postgres 有 300 万行,这些都是人花了多少年写的,现在 Agent 可以咔咔生成
    @AnthropicAI
    Anthropic
    @AnthropicAI
    Sep 4
    Checking that a major mathematical proof is correct can take years. Formalization—converting the mathematical reasoning into a form computer proof assistants like Lean can verify—can help. Last month, Claude completed the first formalized proof of Fermat’s Last Theorem, one of
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    1
  • @SteveLauC
    stevelauc
    @SteveLauC
    Sep 5
    所以看待执行的角度: 1. 算子产生消费数据: pull/push 2. 数据如何在算子间搬运: 直接传/算子间加 exchange/调度器 3. 并发度:静态固定并发 / 动态 morsel。TIL,不知道理解的对不对
    @leiysky
    leiysky
    @leiysky
    Oct 6, 2022
    Velox 的执行模型其实是 push or pull,靠 buffer 连接。他的并发模型是 Volcano,固定的并发度,用 exchange operator 在 pipeline 之间传递数据。 DuckDB 是 morsel-driven parallelism,它的数据传递是靠 scheduler 的,不是算子之间直接互相传递,所以也不是传统意义上的 push-based。
  • @SteveLauC
    stevelauc
    @SteveLauC
    Sep 5
    目前用下来效果非常好,比 humanizer 好用
    @criccomini
    Chris
    @criccomini
    Sep 4
    Ok, this looks very promising. github.com/AminBlg/Simple…
    1
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