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Numerical experiments using deflation with the HISQ action

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arxiv 1710.07219 v1 pith:M3265TAX submitted 2017-10-19 hep-lat

Christine Davies , Carleton DeTar , Craig McNeile , Alejandro Vaquero This is my paper · ORCID
classification hep-lat
keywords quarkhisqactiondeflationexperimentsnumericalcollaborationcompute
verification ladder T0 review T1 audit T2 compute T3 formal
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We report on numerical experiments using deflation to compute quark propagators for the highly improved staggered quark (HISQ) action. The method is tested on HISQ gauge configurations, generated by the MILC collaboration, with lattice spacings of 0.15 fm, with a range of volumes, and sea quark masses down to the physical quark mass.

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  1. Improving HISQ propagator solves using deflation

    hep-lat 2025-01 conditional novelty 5.0 of 10

    Deflated CG with 2048 eigenvectors solves HISQ propagators about 10x faster than standard CG on a 144^3 x 288 lattice at the physical light quark mass, excluding eigenvector setup cost.

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