CUDA constant memory

[jinz2014]

Does SYCL support CUDA constant memory ?

[AlexeySachkov]

Hi @jinz2014,

In general, SYCL has no notion of constant address space - it was removed in SYCL 2020 for simplicity reasons, I believe. Therefore, the remaining question is whether or not the compiler is able to optimize certain things to use backend-specific features.

I'm not familiar with the CUDA, so I will tag @jchlanda here to help with a more detailed answer

[jchlanda]

@JackAKirk has looked into this area recently.

[JackAKirk]

Does SYCL support CUDA constant memory ?

Yes this is going to be available very soon via device_global. Probably by just pre-pending device_global by const but I am finalizing the details.

[zjin-lcf]

Is device_global finalized for CUDA constant memory ?