Yes, and the question was whether it makes sense for Rust to target the GPU, not whether it's possible. I think most people would agree that in an ideal world y

Yes, and the question was whether it makes sense for Rust to target the GPU, not whether it's possible. I think most people would agree that in an ideal world you would have a different programming language for the GPU than you have for the CPU because the hardware is so different. CUDA uses C++ (and C and Fortran) because there is already lots of code written in these languages and it makes it easy to port code to run on the GPU.