SC16 Salt Lake City, UT

12. Performance of Popular HPC Applications on the Intel Knights Landing Platform

Authors: Antonio Gomez-Iglesias (University of Texas at Austin)Feng Chen (University of Texas at Austin)Lei Huang (University of Texas at Austin)Hang Liu (University of Texas at Austin)Si Liu (University of Texas at Austin)Antia Lamas-Linares (University of Texas at Austin)John Cazes (University of Texas at Austin)Carlos Rosales (University of Texas at Austin)

Abstract: We present direct performance measurements for six popular HPC applications in the Knights Landing (KNL) platform. Performance numbers for Sandy Bridge and Haswell processors are provided for contrast. The applications (NAMD, Gromacs, FLASH4, WRF, Quantum Espresso, and NCBI BLAST) were selected from among the ten most used in the Stampede supercomputer at the Texas Advanced Computing Center and, given their diversity, should be representative of typical HPC workloads. All runs were performed with publicly available codes without modification -- except a single line added to FLASH4 to enable threading in a given code section -- and so results should be expected to improve as developers gain access to KNL. Current results are promising, with execution on a single KNL processor showing speedups up to 2.7X with respect to a dual socket Sandy Bridge and up to 1.7x with respect to a dual socket Haswell.

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