OpenCL developer guide for Intel GPUs

[RocketRide9]

Hi. I couldn't create a discussion, so I hope it's fine that I will leave my question here.
Developer guide here: link is outdated and doesn't cover usecases with Intel discrete GPU. The main problem I have is efficiently managing buffers on iGPU systems and GPU systems with the same codebase.
Is there updated guide for Arc GPU? I found one for OneAPI, but that seems specific to SYCL.

[hifron]

Maybe they need more LLVM work for SYCL, then some samples working and if there is official Intel community forum for oneAPI, then also some project catalog take place.

LLVM is quite popular,
Level Zero gpu runtime not so if required, but otherwise maybe OpenCL could be slow if implemented(?) but that is decision of supported hw instructions and other graphic stacks and product decisions...

oneAPI overview
oneAPI howto libs