Harlan (a high level language for general purpose GPU computing)

Eric Holk has released the source to Harlan.

"We propose a declarative approach to coordinating computation and data movement between CPU and GPU, through a domain-specific language that we called Harlan"

Paper here : http://www.cs.indiana.edu/~eholk/papers/parco2011.pdf

Git here : https://github.com/eholk/harlan