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Grid on QPACE 4

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arxiv 2112.01852 v1 pith:PRMPG6SA submitted 2021-12-03 hep-lat cs.DC

Peter Georg , Nils Meyer , Stefan Solbrig , Tilo Wettig This is my paper · ORCID
classification hep-latcs.DC
keywords gridqpacea64fxalternativebenefitscompilerscomplexcontribution
verification ladder T0 review T1 audit T2 compute T3 formal
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In 2020 we deployed QPACE 4, which features 64 Fujitsu A64FX model FX700 processors interconnected by InfiniBand EDR. QPACE 4 runs an open-source software stack. For Lattice QCD simulations we ported the Grid LQCD framework to support the ARM Scalable Vector Extension (SVE). In this contribution we discuss our SVE port of Grid, the status of SVE compilers and the performance of Grid. We also present the benefits of an alternative data layout of complex numbers for the Domain Wall operator.

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Cited by 1 Pith paper

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  1. Study of symmetries in finite temperature $N_f=2$ QCD with M\"obius Domain Wall Fermions

    hep-lat 2024-12 conditional novelty 4.0 of 10

    Screening-mass measurements in N_f=2 lattice QCD with Möbius domain-wall fermions indicate SU(2)_L x SU(2)_R and axial U(1)_A restoration near T_c ~ 165 MeV, while SU(2)_CS shows no clear emergence.

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