There's honestly barely an OpenCL ecosystem to speak of. Even Blender abandoned it. Also, at least with CUDA and HIP, you need to manually malloc GPU memory, a

There's honestly barely an OpenCL ecosystem to speak of. Even Blender abandoned it. Also, at least with CUDA and HIP, you need to manually malloc GPU memory, and explicitly launch GPU kernels (using <<<>>> syntax for CUDA or optionally hipLaunchKernel for HIP). Ecosystem is the main problem of anything not CUDA or sort-of compatible like HIP. A ton production GPGPU code uses CUDA.