I'll write more in an introductory blog post in a day or two. Until that, there is a website
http://clojurecuda.uncomplicate.org, that has the details and documentation.
It is similar to ClojureCL (
http://clojurecl.uncomplicate.org), but is targeted to CUDA and Nvidia GPUs specifically. The main benefit over ClojureCL is that ClojureCUDA will make possible to call various Nvidia libraries such as cuBLAS, cuFFT or cuDNN from your Clojure code.