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Personal blog · fprox.substack.comhardwaresystems

What are you optimizing for? is a personal blog at fprox.substack.com about hardware and systems. Since 2023, 5 different Hacker News readers have linked it 15 times, most often “RISC-V Vector Programming in C with Intrinsics”. It is still writing: the last post was on 2026-10-11, and you can follow it by feed.

Visit the blog
15mentions?
5HN people?
2023–2026first – last linked?
Links on Hacker News per year · peak 5 in 2023

Computer Architecture, Computer Arithmetic, RISC-V.

Most-linked posts?

  1. RISC-V Vector Programming in C with Intrinsics
    3 people · 3 mentions · first linked 2023-11-23
  2. RISC-V and Floating-Point
    2 people · 2 mentions · first linked 2026-05-18

What Hacker News says?

  1. Edit: sorry I missread, I though you were just interested in the vector extension (SIMD) for the genral assembly there isn't mutch to learn tbh, look at the isa reference card and maybe also look at the B (bit manipulation) extension: https://www.cl.cam.ac.uk/teaching/1617/ECAD+Arch/files/docs/... --- Here are some resources on RVV I can recommend: RVV spec (also look at the examples in the repo): https://github.com…

    Comment linking /p/risc-v-vector-extension-in-a-nutshell-part-1

    on “Scaleway launches RISC-V servers”
  2. Submitted Transposing a Matrix using RISC-V Vector as a story · 27 points

    HN discussion
  3. Submitted RISC-V Vector Programming in C with Intrinsics as a story · 5 points

    HN discussion
  4. Submitted RISC-V Vector Programming in C with Intrinsics as a story · 3 points

    HN discussion
  5. Submitted RISC-V Bulk Normalization Algorithm as a story · 2 points

    HN discussion
  6. Submitted RISC-V and Floating-Point as a story · 2 points

    HN discussion
  7. Submitted RISC-V and Floating Point as a story · 2 points

    HN discussion
  8. Submitted RISC-V Support for BFloat16 as a story · 2 points

    HN discussion
  9. Submitted Manifest for RISC-V Constant Time Floating-Point Operations as a story · 1 points

    HN discussion
  10. Submitted RISC-V and Post-Quantum Cryptography as a story · 1 points

    HN discussion
  11. Submitted Partial Taxonomy of 8-Bit Floating-Point Formats as a story · 1 points

    HN discussion
  12. Submitted RISC-V Vector Programming in C with Intrinsics as a story · 1 points

    HN discussion
  13. Submitted Zimop/Zcmop may-be-operations as a story · 1 points

    HN discussion
  14. Submitted Adding a new RISC-V extension (to spike) as a story · 1 points

    HN discussion
  15. Submitted RISC-V Profiles: Defining sets of extensions for coherent ecosystems as a story · 1 points

    HN discussion

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