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As technologies such as symmetrical multiprocessing (SMP) and multicore processor (MCP) advanced, more and more computational cores are contained in one node. Therefore, parallel applications running on a cluster can exchange data among processes through either intra-node or inter-node communication. This gives rise to the question of how much network bandwidth impact on parallel computing performance...
This paper explores the challenges in implementing a message passing interface usable on systems with data-parallel processors. As a case study, we design and implement the ldquoDCGNrdquo API on NVIDIA GPUs that is similar to MPI and allows full access to the underlying architecture. We introduce the notion of data-parallel thread-groups as a way to map resources to MPI ranks. We use a method that...
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