282 citations · 1k across the 43 of their papers we have counts for
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math.NA2008★ 12 cited
Implementing Communication-Optimal Parallel and Sequential QR Factorizations
James Demmel, Laura Grigori, Mark Hoemmen +1
We present parallel and sequential dense QR factorization algorithms for tall and skinny matrices and general rectangular matrices that both minimize communication, and are as stab…
math.NA2008★ 34 cited
Communication-optimal parallel and sequential QR and LU factorizations
James Demmel, Laura Grigori, Mark Hoemmen +1
We present parallel and sequential dense QR factorization algorithms that are both optimal (up to polylogarithmic factors) in the amount of communication they perform, and just as…