Optimizing Wilson-Dirac Operator and Linear Solvers for Intel® KNL
| العنوان: | Optimizing Wilson-Dirac Operator and Linear Solvers for Intel® KNL |
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| المؤلفون: | Karthikeyan Vaidyanathan, Aaron Walden, Dhiraj D. Kalamkar, Thorsten Kurth, Bálint Joó |
| المصدر: | Lecture Notes in Computer Science ISBN: 9783319460789 ISC Workshops |
| بيانات النشر: | Springer International Publishing, 2016. |
| سنة النشر: | 2016 |
| مصطلحات موضوعية: | Quantum chromodynamics, Discretization, 010308 nuclear & particles physics, Computer science, High Energy Physics::Lattice, Linear system, Dirac operator, Grid, 01 natural sciences, Computational science, symbols.namesake, MCDRAM, 0103 physical sciences, symbols, 010306 general physics, Scaling, Sparse matrix |
| الوصف: | Lattice Quantumchromodynamics (QCD) is a powerful tool to numerically access the low energy regime of QCD in a straightforward way with quantifyable uncertainties. In this approach, QCD is discretized on a four dimensional, Euclidean space-time grid with millions of degrees of freedom. In modern lattice calculations, most of the work is still spent in solving large, sparse linear systems. This part has two challenges, i.e. optimizing the sparse matrix application as well as BLAS-like kernels used in the linear solver. We are going to present performance optimizations of the Dirac operator (dslash) with and without clover term for recent Intel® architectures, i.e. Haswell and Knights Landing (KNL). We were able to achieve a good fraction of peak performance for the Wilson-Dslash kernel, and Conjugate Gradients and Stabilized BiConjugate Gradients solvers. We will also present a series of experiments we performed on KNL, i.e. running MCDRAM in different modes, enabling or disabling hardware prefetching as well as using different SoA lengths. Furthermore, we will present a weak scaling study up to 16 KNL nodes. |
| ردمك: | 978-3-319-46078-9 |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_________::d5667781a395d8aa81f9184e23221dac https://doi.org/10.1007/978-3-319-46079-6_30 |
| حقوق: | CLOSED |
| رقم الأكسشن: | edsair.doi...........d5667781a395d8aa81f9184e23221dac |
| قاعدة البيانات: | OpenAIRE |
| ردمك: | 9783319460789 |
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