this post was submitted on 12 Feb 2024
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AMD Quietly Funded A Drop-In CUDA Implementation Built On ROCm: It's Now Open-Source (www.phoronix.com)
submitted 9 months ago by [email protected] to c/[email protected]
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[–] [email protected] 7 points 9 months ago (2 children)

I'm really curious who at AMD thought it to be a great idea to develop a CUDA compatibility layer but not to release it. As stated, the release was only made because AMD ended financial support.

[–] [email protected] 1 points 2 months ago

Probably a way to save face and not have AMD directly do it.

[–] [email protected] 1 points 9 months ago* (last edited 9 months ago) (1 children)

The problem is that if we make CUDA the standard, then they put nVidia in control of a standard. nVidia could try to manipulate the situation in future versions of CUDA by reworking it to fuck with this implementation, giving AMD a shaky name in the space.

We saw this happen with Wine, where although probably not deliberately, MS made Windows compatibility a moving and very unstable target.

That is something tolerable by open source communities, but isn't something that will fly for official support.

[–] [email protected] 1 points 9 months ago (1 children)

The problem is that if we make CUDA the standard, then they put nVidia in control of a standard. nVidia could try to manipulate the situation in future versions of CUDA by reworking it to fuck with this implementation, giving AMD a shaky name in the space.

I get that but why woulde they fund development of ZLUDA for two years?

[–] [email protected] 2 points 9 months ago

Reverse engineering CUDA can bring other benefits. It allows AMD to see what nVidia is doing right and potentially implement it in their own tech. Having not only documentation but a working implementation can help wonders in this regard.

Or maybe they did want to use it but was scared of getting SLAPPed by Nvidia, so instead let the dev open source it.