Next-generation microprocessors will increasingly rely on parallelism, as opposed to frequency scaling, for improvements in performance. Microprocessor designers are attaining such parallelism by placing multiple processing cores on a single piece of silicon. As the architecture of modern computer systems evolves from single monolithic cores to multiple cores, its programming models continue to evolve. Programming parallel computer systems has historically been quite challenging because the programmer must orchestrate both computation and communication. A number of different models have evolved to help the programmer with this arduous task, from standardized shared memory and message passing application programming interfaces, to automatically parallelizing compilers that attempt to achieve performance and correctness similar to that of hand-coded programs. One of the most widely used standard programming interfaces is the Message Passing Interface (MPI). This thesis contributes rMPI, a robust, deadlock-free, high performance design and implementation of MPI for the Raw tiled architecture.
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