An Introduction to CUDA-Aware MPI (For reference, see MPI Solutions for GPUs and a presentation entitled Introduction to CUDA-aware MPI and NVIDIA GPUDirect)
C. Yang et al, Adaptive Optimization for Petascale Heterogeneous CPU/GPU Computing, 2010 IEEE International Conference on Cluster Computing (CLUSTER), pp. 19-28, 20-24 Sept. 2010.