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- research-articleMay 2022
A Holistic View of Memory Utilization on HPC Systems: Current and Future Trends
MEMSYS 2021: The International Symposium on Memory SystemsSeptember 2021, Article No.: 14, pp 1–11https://doi.org/10.1145/3488423.3519336Memory subsystem is one crucial component of a computing system. Co-designing memory subsystems becomes increasingly challenging as workloads continue evolving on HPC facilities and new architectural options emerge. This work provides the first large-...
- research-articleNovember 2020
TOSS-2020: a commodity software stack for HPC
- Edgar A. León,
- Trent D'Hooge,
- Nathan Hanford,
- Ian Karlin,
- Ramesh Pankajakshan,
- Jim Foraker,
- Chris Chambreau,
- Matthew L. Leininger
SC '20: Proceedings of the International Conference for High Performance Computing, Networking, Storage and AnalysisNovember 2020, Article No.: 40, pp 1–15The simulation environment of any HPC platform is key to the performance, portability, and productivity of scientific applications. This environment has traditionally been provided by platform vendors, presenting challenges for HPC centers and users ...
- research-articleNovember 2019
Preparation and optimization of a diverse workload for a large-scale heterogeneous system
- Ian Karlin,
- Yoonho Park,
- Bronis R. de Supinski,
- Peng Wang,
- Bert Still,
- David Beckingsale,
- Robert Blake,
- Tong Chen,
- Guojing Cong,
- Carlos Costa,
- Johann Dahm,
- Giacomo Domeniconi,
- Thomas Epperly,
- Aaron Fisher,
- Sara Kokkila-Schumacher,
- Steven Langer,
- Hai Le,
- Eun Kyung Lee,
- Naoya Maruyama,
- Xinyu Que,
- David Richards,
- Bjorn Sjogreen,
- Jonathan Wong,
- Carol Woodward,
- Ulrike Yang,
- Xiaohua Zhang,
- Bob Anderson,
- David Appelhans,
- Levi Barnes,
- Peter Barnes,
- Sorin Bastea,
- David Boehme,
- Jamie A. Bramwell,
- Jim Brase,
- Jose Brunheroto,
- Barry Chen,
- Charway R. Cooper,
- Tony DeGroot,
- Rob Falgout,
- Todd Gamblin,
- David Gardner,
- James Glosli,
- John Gunnels,
- Max Katz,
- Tzanio Kolev,
- I-Feng W. Kuo,
- Matthew P. Legendre,
- Ruipeng Li,
- Pei-Hung Lin,
- Shelby Lockhart,
- Kathleen McCandless,
- Claudia Misale,
- Jaime Moreno,
- Rob Neely,
- Jarom Nelson,
- Rao Nimmakayala,
- Kathryn O'Brien,
- Kevin O'Brien,
- Ramesh Pankajakshan,
- Roger Pearce,
- Slaven Peles,
- Phil Regier,
- Steve Rennich,
- Martin Schulz,
- Howard Scott,
- James Sexton,
- Kathleen Shoga,
- Shiv Sundram,
- Guillaume Thomas-Collignon,
- Brian Van Essen,
- Alexey Voronin,
- Bob Walkup,
- Lu Wang,
- Chris Ward,
- Hui-Fang Wen,
- Dan White,
- Christopher Young,
- Cyril Zeller,
- Ed Zywicz
SC '19: Proceedings of the International Conference for High Performance Computing, Networking, Storage and AnalysisNovember 2019, Article No.: 32, pp 1–17https://doi.org/10.1145/3295500.3356192Productivity from day one on supercomputers that leverage new technologies requires significant preparation. An institution that procures a novel system architecture often lacks sufficient institutional knowledge and skills to prepare for it. Thus, the "...
- research-articleNovember 2019
An evaluation of the CORAL interconnects
- Christopher Zimmer,
- Scott Atchley,
- Ramesh Pankajakshan,
- Brian E. Smith,
- Ian Karlin,
- Matthew L. Leininger,
- Adam Bertsch,
- Brian S. Ryujin,
- Jason Burmark,
- André Walker-Loud,
- M. A. Clark,
- Olga Pearce
SC '19: Proceedings of the International Conference for High Performance Computing, Networking, Storage and AnalysisNovember 2019, Article No.: 39, pp 1–18https://doi.org/10.1145/3295500.3356166The US Department of Energy deployed the Summit and Sierra supercomputers with the latest state-of-the-art network interconnect technology in 2018 and both systems entered production in 2019. In this paper, we provide an in-depth assessment of the ...
- research-articleJuly 2019
The design, deployment, and evaluation of the CORAL pre-exascale systems
- Sudharshan S. Vazhkudai,
- Bronis R. de Supinski,
- Arthur S. Bland,
- Al Geist,
- James Sexton,
- Jim Kahle,
- Christopher J. Zimmer,
- Scott Atchley,
- Sarp Oral,
- Don E. Maxwell,
- Veronica G. Vergara Larrea,
- Adam Bertsch,
- Robin Goldstone,
- Wayne Joubert,
- Chris Chambreau,
- David Appelhans,
- Robert Blackmore,
- Ben Casses,
- George Chochia,
- Gene Davison,
- Matthew A. Ezell,
- Tom Gooding,
- Elsa Gonsiorowski,
- Leopold Grinberg,
- Bill Hanson,
- Bill Hartner,
- Ian Karlin,
- Matthew L. Leininger,
- Dustin Leverman,
- Chris Marroquin,
- Adam Moody,
- Martin Ohmacht,
- Ramesh Pankajakshan,
- Fernando Pizzano,
- James H. Rogers,
- Bryan Rosenburg,
- Drew Schmidt,
- Mallikarjun Shankar,
- Feiyi Wang,
- Py Watson,
- Bob Walkup,
- Lance D. Weems,
- Junqi Yin
SC '18: Proceedings of the International Conference for High Performance Computing, Networking, Storage, and AnalysisNovember 2018, Article No.: 52, pp 1–12https://doi.org/10.1109/SC.2018.00055CORAL, the Collaboration of Oak Ridge, Argonne and Livermore, is fielding two similar IBM systems, Summit and Sierra, with NVIDIA GPUs that will replace the existing Titan and Sequoia systems. Summit and Sierra are currently ranked No. 1 and No. 3, ...
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- research-articleNovember 2018
The design, deployment, and evaluation of the CORAL pre-exascale systems
- Sudharshan S. Vazhkudai,
- Bronis R. de Supinski,
- Arthur S. Bland,
- Al Geist,
- James Sexton,
- Jim Kahle,
- Christopher J. Zimmer,
- Scott Atchley,
- Sarp Oral,
- Don E. Maxwell,
- Veronica G. Vergara Larrea,
- Adam Bertsch,
- Robin Goldstone,
- Wayne Joubert,
- Chris Chambreau,
- David Appelhans,
- Robert Blackmore,
- Ben Casses,
- George Chochia,
- Gene Davison,
- Matthew A. Ezell,
- Tom Gooding,
- Elsa Gonsiorowski,
- Leopold Grinberg,
- Bill Hanson,
- Bill Hartner,
- Ian Karlin,
- Matthew L. Leininger,
- Dustin Leverman,
- Chris Marroquin,
- Adam Moody,
- Martin Ohmacht,
- Ramesh Pankajakshan,
- Fernando Pizzano,
- James H. Rogers,
- Bryan Rosenburg,
- Drew Schmidt,
- Mallikarjun Shankar,
- Feiyi Wang,
- Py Watson,
- Bob Walkup,
- Lance D. Weems,
- Junqi Yin
SC '18: Proceedings of the International Conference for High Performance Computing, Networking, Storage, and AnalysisNovember 2018, Article No.: 52, pp 1–12CORAL, the Collaboration of Oak Ridge, Argonne and Livermore, is fielding two similar IBM systems, Summit and Sierra, with NVIDIA GPUs that will replace the existing Titan and Sequoia systems. Summit and Sierra are currently ranked No. 1 and No. 3, ...
- research-articleNovember 2017
Predicting the performance impact of different fat-tree configurations
- Nikhil Jain,
- Abhinav Bhatele,
- Louis H. Howell,
- David Böhme,
- Ian Karlin,
- Edgar A. León,
- Misbah Mubarak,
- Noah Wolfe,
- Todd Gamblin,
- Matthew L. Leininger
SC '17: Proceedings of the International Conference for High Performance Computing, Networking, Storage and AnalysisNovember 2017, Article No.: 50, pp 1–13https://doi.org/10.1145/3126908.3126967The fat-tree topology is one of the most commonly used network topologies in HPC systems. Vendors support several options that can be configured when deploying fat-tree networks on production systems, such as link bandwidth, number of rails, number of ...
- research-articleNovember 2017
DataRaceBench: a benchmark suite for systematic evaluation of data race detection tools
SC '17: Proceedings of the International Conference for High Performance Computing, Networking, Storage and AnalysisNovember 2017, Article No.: 11, pp 1–14https://doi.org/10.1145/3126908.3126958Data races in multi-threaded parallel applications are notoriously damaging while extremely difficult to detect. Many tools have been developed to help programmers find data races. However, there is no dedicated OpenMP benchmark suite to systematically ...
- research-articleNovember 2016
Characterizing parallel scientific applications on commodity clusters: an empirical study of a tapered fat-tree
- Edgar A. León,
- Ian Karlin,
- Abhinav Bhatele,
- Steven H. Langer,
- Chris Chambreau,
- Louis H. Howell,
- Trent D'Hooge,
- Matthew L. Leininger
SC '16: Proceedings of the International Conference for High Performance Computing, Networking, Storage and AnalysisNovember 2016, Article No.: 78, pp 1–12Understanding the characteristics and requirements of applications that run on commodity clusters is key to properly configuring current machines and, more importantly, procuring future systems effectively. There are only a few studies, however, that ...
- research-articleMarch 2011
Parallel memory prediction for fused linear algebra kernels
ACM SIGMETRICS Performance Evaluation Review (SIGMETRICS), Volume 38, Issue 4March 2011, pp 43–49https://doi.org/10.1145/1964218.1964226The performance of many scientific programs is limited by data movement. Loop fusion is one optimization used to increase the speed of memory bound operations. To automate loop fusion for matrix computations, we developed the Build to Order (BTO) ...
- research-articleNovember 2009
Automating the generation of composed linear algebra kernels
SC '09: Proceedings of the Conference on High Performance Computing Networking, Storage and AnalysisNovember 2009, Article No.: 59, pp 1–12https://doi.org/10.1145/1654059.1654119Memory bandwidth limits the performance of important kernels in many scientific applications. Such applications often use sequences of Basic Linear Algebra Subprograms (BLAS), and highly efficient implementations of those routines enable scientists to ...
