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dbeurle / neon

A finite element code
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Reordering before iterative linear solve #148

Closed dbeurle closed 5 years ago

dbeurle commented 5 years ago

Performing a bandwidth reduction ordering of the sparse matrix before a linear solve has been shown to improve cache locality in the expensive spmv kernel. This PR implements a fast Cuthill-McKee algorithm to reorder the sparse matrix.

Closes #135.