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Parallelism and data layout

Aztec can handle arbitrary assignments of matrix rows to processors. Since this quite general arrangement makes it harder to construct the local numbering of the matrices (see section 2.2.2), the user can supply the matrix with global numbering and a preprocessing routine performs the localisation. However, the user does have to supply all rows on the appropriate processor.

Victor Eijkhout
Mon Aug 25 17:46:10 PDT 1997