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AVX-512 extension to OpenQCD 1.6

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arxiv 1806.06043 v2 pith:N6O4TJYC submitted 2018-06-15 hep-lat cs.DC

AVX-512 extension to OpenQCD 1.6

classification hep-lat cs.DC
keywords avx-512extensioninteloperationsfloatingopenqcdperformancepoint
verification ladder T0 review T1 audit T2 compute T3 formal T4 reserved
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We publish an extension of openQCD-1.6 with AVX-512 vector instructions using Intel intrinsics. Recent Intel processors support extended instruction sets with operations on 512-bit wide vectors, increasing both the capacity for floating point operations and register memory. Optimal use of the new capabilities requires reorganising data and floating point operations into these wider vector units. We report on the implementation and performance of the AVX-512 OpenQCD extension on clusters using Intel Knights Landing and Xeon Scalable (Skylake) CPUs. In complete HMC trajectories with physically relevant parameters we observe a performance increase of 5% to 10%.

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