erichkeane wrote:

> I think we're more or less on the same page. I'm all for making docs useful, 
> and view "docs are spotty as-is" to be an argument for doing a better job.
> 
> > Clang CUDA implementation is far enough from compatible with the NVIDIA 
> > CUDA that the CUDA programing manual
> 
> We're largely compatible semantically, but not in the detail of the 
> implementation. While some implementation differences are observable, most of 
> the existing CUDA code compiles and works with both NVCC and Clang with 
> little or no changes. CUDA programming manual is still _the_ reference 
> manual, even if it could benefit from a chapter on portability across NVCC 
> and Clang.
> 
> > So a short-description + link WOULD be fine, but the 'established 
> > nomenclature' doesn't help the above particularly well.
> 
> "established nomenclature" may not have been the best term for me to use. 
> What I meant is not just "we've been calling them that way forever" but that 
> CUDA attributes are actually part of the CUDA language extension (extras on 
> top of C++). Those attributes are closer to a keyword than an attribute, as 
> they have much more influence on what compiler does with the code. That often 
> makes it rather hard to concisely explain the purpose. E.g. explaining C++'s 
> `virtual` in two lines may be a bit of a challenge, unless the reader is 
> familiar with OOP/classes and inheritance. CUDA's attributes are roughly in 
> the same ballpark -- hard to explain them unless the reader is familiar with 
> how CUDA works, and, in this case, with additional nuances of the recent GPUs.
> 
> So a short description + link to the docs looks like a reasonable compromise 
> suitable for giving a rough idea at a glance, and for providing a direct 
> pointer to the gory details, if needed.
> 
> > My problem with how it reads now: to someone with no CUDA knowledge, this 
> > reads as if a Markov model went haywire, and just uses a bunch of words 
> > that don't really mean anything (again, unless you already KNOW CUDA, at 
> > which point: why are you needing this doc?).
> 
> That may indeed be the case. The verbatim wording should be reasonably 
> meaningful for everyone.

Sounds like we are roughly on the same page then.  Give it another shot if you 
could (plus make sure the other things are done, I think the declspec spellings 
aren't done yet?), and I'll take another look on Monday.  Hoepfully this is 
close enough at that point I can make specific suggestions on changes (or have 
none!).

https://github.com/llvm/llvm-project/pull/156686
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