Port and optimize the CEED software stack to Aurora/Frontier EA (ECP Milestone Report)

Technical Report · Thu Sep 30 00:00:00 EDT 2021

DOI:https://doi.org/10.2172/1822610· OSTI ID:1822610

Kolev, Tzanio ^[1]; Fischer, Paul ^[1]; Beams, Natalie ^[1]; Brown, Jed ^[1]; Camier, Jean-Sylvain ^[1]; Chalmers, Noel ^[1]; Dobrev, Veselin ^[1]; Kerkemeier, Stefan ^[1]; Lan, Yu-Hsiang ^[1]; Lin, Yimin ^[1]; Lindquist, Neil ^[1]; McDougall, Damon ^[1]; Medina, David ^[1]; Merzari, Elia ^[1]; Min, Misun ^[1]; Moe, Scott ^[1]; Pazner, Will ^[1]; Phillips, Malachi ^[1]; Ratnayaka, Thilina ^[1]; Rowe, Kris ^[1] ; Shephard, Mark S. ^[1]; Smith, Cameron W. ^[1]; Tomov, Stanimire ^[1]; Warburton, Tim ^[1]

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1. Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)

The goal of this milestone was to port the CEED software stack, including Nek, MFEM and libCEED to the Frontier and Aurora early access hardware, work on optimizing the performance on AMD and Intel GPUs, and demonstrate impact in CEED-enabled ECP applications. As part of this milestone, we also performed a number of other activities, including continued optimizations for CEED applications at scale on Summit, performance evaluation on non-ECP hardware, including the Fugaku’s A64FX chip and the NVIDIA A100 GPU architecture, exploring the use of just-in-time compilations in applications at scale and potential of mixed precision optimizations in the CEED discretization and solver algorithms, and more. During the milestone period, the CEED team released new versions of 6 of its packages, including major releases of MFEM, NekRS and OCCA. We also organized the fifth CEED Annual meeting (CEED5AM) which included nearly 100 researchers from national labs, universities and industry.

• Research Organization: Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States); Argonne National Lab. (ANL), Argonne, IL (United States). Argonne Leadership Computing Facility (ALCF); Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Oak Ridge Leadership Computing Facility (OLCF)
• Sponsoring Organization: USDOE National Nuclear Security Administration (NNSA), Office of Defense Programs (DP); USDOE Office of Science (SC), Advanced Scientific Computing Research (ASCR)
• DOE Contract Number: AC52-07NA27344; AC02-06CH11357; AC05-00OR22725
• OSTI ID: 1822610
• Report Number(s): LLNL-TR-827178; 1042269
• Country of Publication: United States
• Language: English

Related Subjects

97 MATHEMATICS AND COMPUTING