Are we witnessing the spectre of an HPC meltdown?: Are We Witnessing the Spectre of an HPC Meltdown?

Melesse Vergara, Veronica G.; Brim, Michael J.; Joubert, Wayne; Boehm, Swen; Baker, Matthew B.; Hernandez, Oscar R.; Oral, Sarp; Simmons, James A.; Maxwell, Don E.

doi:10.1002/cpe.5020

Are we witnessing the spectre of an HPC meltdown?: Are We Witnessing the Spectre of an HPC Meltdown?

Journal Article · Tue Oct 16 00:00:00 EDT 2018 · Concurrency and Computation. Practice and Experience

DOI:https://doi.org/10.1002/cpe.5020· OSTI ID:1488719

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Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)

In this study, we measure and analyze the performance observed when running applications and benchmarks before and after the Meltdown and Spectre fixes have been applied to the Cray supercomputers and supporting systems at the Oak Ridge Leadership Computing Facility (OLCF). Of particular interest is the effect of these fixes on applications selected from the OLCF portfolio when running at scale. This comprehensive study presents results from experiments run on Titan, Eos, Cumulus, and Percival supercomputers at the OLCF. Lastly, the results from this study are useful for HPC users running on Cray supercomputers and serve to better understand the impact that these two vulnerabilities have on diverse HPC workloads at scale.

Research Organization:: Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States); Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States). Oak Ridge Leadership Computing Facility (OLCF)

Sponsoring Organization:: USDOE Office of Science (SC), Advanced Scientific Computing Research (ASCR) (SC-21)

Grant/Contract Number:: AC05-00OR22725

OSTI ID:: 1488719

Alternate ID(s):: OSTI ID: 1479559

Journal Information:: Concurrency and Computation. Practice and Experience, Journal Name: Concurrency and Computation. Practice and Experience Journal Issue: 16 Vol. 31; ISSN 1532-0626

Publisher:: WileyCopyright Statement

Country of Publication:: United States

Language:: English

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Cited By (1)

Special Issue of the Cray User Group (CUG 2018) Thota, Abhinav; He, Yun Concurrency and Computation: Practice and Experience https://doi.org/10.1002/cpe.5117	journal	January 2019