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Zluda: CUDA on Intel GPUs

github.com Software & code Software projects Software engineering Candidate
Screenshot of github.com captured 2026-07-20
Page preview · captured 2026-07-20

Resurfaced independently across 4 calendar years, with breakout response in 2 of them.

submissions
5
submitters
5
observed span
2020–2025
peak thread · 90 comments
261 pts
latest 20+ return · 2023-06-15
237 pts

Submission timeline

2007–2026

One slot for every year since HN launched. Height is that year's peak points; orange marks a 100+ point or 50+ comment breakout. Select a bar to open its strongest thread.

First comments on top threads

HN comment order

Trivia: the Polish word "cuda" means "miracles", "zluda" ("złuda") means "a delusion". Nice pun.

wmu·261-point thread·

This is something that fundamentally can't work, unfortunately. One showstopper (and there may be others) is subgroup size. Nvidia hardware has a subgroup (warp) size of 32, while Intel's subgroup size story is far more complicated, and depends on a compiler heuristic to tune. The short version of the story is that it's usually 16 but can be 8 if there's a lot of register pressure, or 32 for a big workgroup and not much register pressure (and for those…

The first top-level comment from each of the four biggest threads, in HN’s own order. Excerpts are shortened; open a comment for full context.

Breakout years
2

100+ points or 50+ comments

Total points
504

reference only — not used in Hall rules or ranking

Total comments
167

reference only — not used in Hall rules or ranking

Every submission

DateTitle as submittedByPointsComments
2020-11-24Zluda: CUDA on Intel GPUsT-A20
2020-11-27CUDA on Intel GPUs in Rustgyre00710
2021-02-25Zluda: CUDA on Intel GPUsFirst breakout · Best threadfho26177
2023-06-15Zluda: Run CUDA code on Intel GPUs, unmodifiedLatest 20+ point returngoranmoomin23790
2025-07-22ZLUDA - CUDA on Non-Nvidia GPUsdanboarder30