Amanda Bienz

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Algebraic multigrid (AMG) is an O(n) solution process for many large sparse linear systems. A hierarchy of progressively coarser grids is constructed that utilize complementary relaxation and interpolation operators. High-energy error is reduced by relaxation, while low-energy error is mapped to coarse-grids and reduced there. However, large parallel(More)
This paper introduces a method to reduce communication that is injected into the network during a sparse matrix-vector multiply by reorganizing messages on each node. This results in a reduction of the inter-node communication, replaced by less-costly intra-node communication, which reduces both the number and size of messages that are injected into the(More)
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