The OREGAMI project involves the design, implementation, and testing of algorithms for mapping parallelcomputations to message-passing parallel architectures. OREGAMI addresses the mapping problem by exploiting regul...
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The OREGAMI project involves the design, implementation, and testing of algorithms for mapping parallelcomputations to message-passing parallel architectures. OREGAMI addresses the mapping problem by exploiting regularity and by allowing the user to guide and evaluate mapping decisions made by OREGAMI's efficient combinatorial mapping algorithms. OREGAMI's approach to mapping is based on a new graph theoretic model of parallel computation called the Temporal Communication Graph. The OREGAMI software tools include three components: (I ) LaRCS is a graph description language which allows the user to describe regularity in the communication topology as well as the temporal communication behavior (the pattern of message-passing over time). (2) MAPPER is our library of mapping algorithms which utilize information provided by LaRCS to perform contraction, embedding, and routing. (3) METRICS is an interactive graphics tool for display and analysis of mappings. This paper gives an overview of the OREGAMI project, the software tools, and OREGAMI's mapping algorithms.
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