109 citations · 261 across the 29 of their papers we have counts for
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cs.DC2018★ 1 cited
A 3D Parallel Algorithm for QR Decomposition
Grey Ballard, James Demmel, Laura Grigori +2
Interprocessor communication often dominates the runtime of large matrix computations. We present a parallel algorithm for computing QR decompositions whose bandwidth cost (communi…
astro-ph.CO2018★ 7 cited
Solving linear equations with messenger-field and conjugate gradients techniques - an application to CMB data analysis
J. Papez, L. Grigori, R. Stompor
We discuss linear system solvers invoking a messenger-field and compare them with (preconditioned) conjugate gradients approaches. We show that the messenger-field techniques corre…