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DDalphaAMG for Twisted Mass Fermions

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arxiv 1611.01034 v1 pith:NKMEBDQ2 submitted 2016-11-03 hep-lat

Simone Bacchio , Costantia Alexandrou , Jacob Finkenrath , Andreas Frommer , Karsten Kahl , Matthias Rottmann This is my paper · ORCID
classification hep-lat
keywords ddalphaamgmasstwistedlibrarymultigridactionadaptiveaggregation-based
verification ladder T0 review T1 audit T2 compute T3 formal
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We present the Adaptive Aggregation-based Domain Decomposition Multigrid method extended to the twisted mass fermion discretization action. We show comparisons of results as a function of tuning the parameters that enter the twisted mass version of the DDalphaAMG library (https://github.com/sbacchio/DDalphaAMG). Moreover, we linked the DDalphaAMG library to the tmLQCD software package and give details on the performance of the multigrid solver during HMC simulations at the physical point.

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  1. Chiral rank-$k$ truncations for the multigrid preconditioner of Wilson fermions in lattice QCD

    hep-lat 2025-02 conditional novelty 5.0 of 10

    An SVD-based rank-k truncation of chirally split test vectors reduces Wilson fermion multigrid solve times on HSC and MILC ensembles.

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