These days Vulkan can be used for compute as well, and it gives the user a far more refined interface than OpenCL. There's very little reason to limit oneself to the latter.
Any Vulkan library you can suggest? Last time I checked Vulkan, it required enormous amount of boilerplate just to connect GPU, compile, send data and run code. So, I ended up using OpenCL for years. Unless there are good high level libraries around I would still stick to OpenCL.
