There's native code like SQLite which assuming a sensible file system and C compiler is quite portable, and then there's native code which cares about exact com

There's native code like SQLite which assuming a sensible file system and C compiler is quite portable, and then there's native code which cares about exact compiler versions, driver version, and the exact model of your CPU, GPU and NIC. My suggestion is go look at how to program a GPU using naive vulkan/metal, and then look for the dark magic that is used to make GPUs run fast. It's the latter you're encountering with the ML python projects.