[trishume]

(disclaimer: not the author)

One problem is that deploying GPU neural networks cross-platform is a huge pain. You basically have to get your users to install CUDA and figure out how to dynamically link against that on Windows and Linux, Mac users and people with AMD GPUs are out of luck of course.

The only way to do cross-platform GPU compute without your users installing a toolkit like CUDA is with Vulkan (and MoltenVk or gfx-rs). But then you don't have the super optimized GEMM kernels so your network might run slower than just using a super-optimized GEMM kernel on the CPU.

[jacob-jackson]

This is a big part of it. CPU-only models are much easier to deploy, and not all developers have GPUs, so the first iteration of the local model will be CPU-only. We might release a GPU version later.

[modeless]

Users don't have to install CUDA if you build your app correctly. Yes, AMD GPU users would be out of luck, but that's really on AMD for failing to get anything like cuDNN integrated with popular frameworks.