OpenCL on Metal – what if clvk works?
threedots.ovh
threedots.ovh
Intel has a cleaned up variant of OpenCL for the purpose of running SPIR-V binaries called oneAPI L0, and Zluda can run on top of it. https://github.com/vosen/ZLUDA
AMD used to support SPIR in their driver, but they removed support for that in 2018. As such, you won’t get anything useful out of that one on AMD GPUs.
OneAPI is focused on SYSCL, which is targeted at C++ and backend agnostic, it does nothing for Fortran, .NET, Java, Haskell, Rust, or any other language targeting PTX.
CUDA won thanks to embracing GPU polyglot programming and best in quality development tooling.
It is more a failure of the competition to uplevel their game than NVidia's own efforts.
oneAPI L0 supports SPIR-V's OpenCL profile, which is a language agnostic IR.
oneAPI Fortran offload to GPUs is supported with the OpenMP programming model. (https://www.intel.com/content/www/us/en/developer/tools/onea...)
SYCL is one of the programming models supported with oneAPI, OpenMP is also a first-class programming model. You can mix both OpenMP and oneAPI code in the same program too. (https://www.intel.com/content/www/us/en/develop/documentatio...)
The clearly defined oneAPI L0/OpenCL w/ SPIR-V API boundary also allows for custom programming models w/ 3rd-party compilers.
It's not dropped, it's optional. An OpenCL 3.0 impl with SPIR-V support would be able to run such binaries on top - but Intel are the ones who care.