Grid: OneCode and FourAPIs

Peter Boyle; Guido Cossu; Gianluca Filaci; Christoph Lehner; Antonin Portelli; Azusa Yamaguchi

Grid: OneCode and FourAPIs

High Energy Physics - Lattice 2022-03-15 v1

Authors: Peter Boyle , Guido Cossu , Gianluca Filaci , Christoph Lehner , Antonin Portelli , Azusa Yamaguchi

Abstract

We discuss a substantial update to the Grid software library for Lattice QCD, enabling it to port to multiple GPU architectures while retaining CPU vectorisation and SIMD execution within OpenMP threads. The GPU environments supported include vendor specific Nvidia CUDA and AMD HIP environments and a (mostly) standards based SYCL implementation. This is performed by an internal abstraction interface giving single source cross-platform performance portability across all number of planned Exascale architectures, and all those planned by the US Department of Energy.

Cite

@article{arxiv.2203.06777,
  title  = {Grid: OneCode and FourAPIs},
  author = {Peter Boyle and Guido Cossu and Gianluca Filaci and Christoph Lehner and Antonin Portelli and Azusa Yamaguchi},
  journal= {arXiv preprint arXiv:2203.06777},
  year   = {2022}
}

Comments

10 pages, 6 figures

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