That's a compiler problem. Once could start from clang -xcuda and hack onwards. Or work in the intersection of CUDA and HIP which is relatively broad if a bit of a porting nuisance.
Chris and Nick originally, a few more of us these days. Spectral compute. We might have a nicer world if people had backed opencl instead of cuda but whatever. Likewise rust has a serious edge over c++. But to the compiler hacker, this is all obfuscated SSA form anyway, it's hard to get too emotional about the variations.
That's simply not true, because standard level should operate on the IR level, not on the language. You have to generate some IR from your language, at that level it makes sense to talk about standards. The only exception is probably WebGPU where Apple pushed using a fixed language instead of IR which is was a limiting idea.
They are pretty much about IR when it comes to language interchange. SPIR-V is explicitly an IR that can be targeted from a lot of different languages.
Language would matter more for those who actually would want to write some programs in it. So I'd say rust-gpu is something that should get more backing.
