Hacker News: jackxlau

New comment by jackxlau in "The MilkV Jupiter 2/SpacemiT K3 (RISC-V vector compute)"

jackxlau — Sun, 14 Jun 2026 08:24:11 +0000

this is neat

New comment by jackxlau in "Don't trust large context windows"

jackxlau — Sun, 14 Jun 2026 08:17:32 +0000

In my own testing I have seen peak performance happen usually within 15-20% of the intended context limit, albeit there are a few optimizations depending on the task quality.

New comment by jackxlau in "The MilkV Jupiter 2/SpacemiT K3 (RISC-V vector compute)"

jackxlau — Thu, 11 Jun 2026 18:20:38 +0000

the handshake process to unlock the A100 cores is pretty interesting it reminds me of driving CPU cores like a GPU command queue.

New comment by jackxlau in "Software Is Made Between Commits"

jackxlau — Thu, 11 Jun 2026 18:15:00 +0000

I came across the conclusion here since a change sometimes spans several repos, per-repo history optimizes the wrong target.