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arXiv · 1512.01542

Optimizing the domain wall fermion Dirac operator using the R-Stream source-to-source compiler

Meifeng Lin·Eric Papenhausen·M. Harper Langston·Benoit Meister·Muthu Baskaran·Taku Izubuchi·Chulwoo Jung
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Abstract

The application of the Dirac operator on a spinor field, the Dslash operation, is the most computation-intensive part of the lattice QCD simulations. It is often the key kernel to optimize to achieve maximum performance on various platforms. Here we report on a project to optimize the domain wall fermion Dirac operator in Columbia Physics System (CPS) using the R-Stream source-to-source compiler. Our initial target platform is the Intel PC clusters. We discuss the optimization strategies involved before and after the automatic code generation with R-Stream and present some preliminary benchmark results.

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Meifeng Lin, Eric Papenhausen, M. Harper Langston, Benoit Meister, Muthu Baskaran, Taku Izubuchi, Chulwoo Jung. 2015-12-04. Optimizing the domain wall fermion Dirac operator using the R-Stream source-to-source compiler. https://arxiv.org/abs/1512.01542

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