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arXiv · 1804.08593

Solving DWF Dirac Equation Using Multisplitting Preconditioned Conjugate Gradient

Duo Guo·Robert Mawhinney·Jiqun Tu
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Abstract

We show that using the multisplitting algorithm as a preconditioner for conjugate gradient inversion of the domain wall Dirac operator could effectively reduce the inter- node communication cost, at the expense of performing more on-node floating point operations. This method could be useful for supercomputers with far more on-node flops than inter-node communication bandwidth.

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Duo Guo, Robert Mawhinney, Jiqun Tu. 2018-04-23. Solving DWF Dirac Equation Using Multisplitting Preconditioned Conjugate Gradient. https://arxiv.org/abs/1804.08593

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