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Volume 334 - The 36th Annual International Symposium on Lattice Field Theory (LATTICE2018) - Algorithms and Machines
Solving DWF Dirac Equation Using Multisplitting Preconditioned Conjugate Gradient
J. Tu
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Published on: 2019 May 29
We show that using the multisplitting algorithm as a preconditioner for conjugate gradient inversion of the domain wall fermion 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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