M. K. Velamati Arun Kumar Naresh Jayam Ganapathy Senthilkumar Pallav K. Baruah Raghunath Sharma Shakti Kapoor Ashok Srinivasan Optimization of Collective Communication in Intra-cell MPI. 488-499 2007 conf/hipc/2007 HiPC http://dx.doi.org/10.1007/978-3-540-77220-0_45 db/conf/hipc/hipc2007.html#VelamatiKJSBSKS07