[billti]

If you know CUDA, then I assume you know a bit already about GPUs and the major concepts. There’s just minor differences and different terminology for things like “warps” etc.

With that base, I’ve found their docs decent enough, especially coupled with the Metal Shader Language pdf they provide (https://developer.apple.com/metal/Metal-Shading-Language-Spe...), and quite a few code samples you can download from the docs site (e.g. https://developer.apple.com/documentation/metal/performing_c...).

I’d note a lot of their stuff was still written in Objective-C, which I’m not that familiar with. But most of that is boilerplate and the rest is largely C/C++ based (including the Metal shader language).

I just ported some CPU/SIMD number crunching (complex matrices) to Metal, and the speed up has been staggering. What used to take days now takes minutes. It is the hottest my M3 MacBook has ever been though! (See https://x.com/billticehurst/status/1871375773413876089 :-)