The High Performance Conjugate Gradients Benchmark is a supercomputing benchmark test proposed by Michael Heroux from Sandia National Laboratories, and Jack Dongarra and Piotr Luszczek from the University of Tennessee.[1][2] It is intended to model the data access patterns of real-world applications such as sparse matrix calculations, thus testing the effect of limitations of the memory subsystem and internal interconnect of the supercomputer on its computing performance.[3] Because it is internally I/O bound (the data for the benchmark resides in main memory as it is too large for processor caches), HPCG testing generally achieves only a tiny fraction of the peak FLOPS the computer could theoretically deliver.[4]

HPCG is intended to complement benchmarks such as the LINPACK benchmarks that put relatively little stress on the internal interconnect.[5] The source of the HPCG benchmark is available on GitHub.[6]

As of June 2018, the Summit supercomputer held the top spot in the HPCG performance rankings, followed by the Sierra and the K computer.[7]

In June of 2020, Summit was superseded by Fugaku with a speed of 16.0 HPCG-petaflops (an increase of 540%). Summit is currently 4th,[8] LUMI 3rd and Frontier 2nd.

See also

References

  1. Hemsoth, Nicole (June 26, 2014). "New HPC Benchmark Delivers Promising Results". HPCWire. Archived from the original on 2014-09-08. Retrieved 2014-09-08.
  2. Dongarra, Jack; Heroux, Michael (June 2013). "Toward a New Metric for Ranking High Performance Computing Systems" (PDF). Sandia National Laboratory. Archived from the original (PDF) on August 20, 2013. Retrieved 2016-07-04.
  3. Trader, Tiffany (2015-07-16). "LINPACK's 'Companion Metric' Gains Traction". HPCwire. Archived from the original on 2016-05-30. Retrieved 2016-07-04.
  4. Jackson, Adrian (30 July 2015). "HPCG: benchmarking supercomputers". www.epcc.ed.ac.uk. EPCC at the University of Edinburgh. Archived from the original on 2016-08-20. Retrieved 2016-07-04.
  5. Brueckner, Rich (2015-07-13). "Latest HPCG Performance List Complements TOP500". Inside HPC. Archived from the original on 2016-05-28. Retrieved 2016-07-04.
  6. "HPC-G source code". Github. Archived from the original on 11 June 2018. Retrieved 6 February 2019.
  7. "US Regains TOP500 Crown with Summit Supercomputer, Sierra Grabs Number Three Spot". Top500. Top500.org. Archived from the original on 25 March 2021. Retrieved 28 June 2018.
  8. "HPCG - November 2022 | TOP500". www.top500.org. Archived from the original on 2023-01-20. Retrieved 2023-02-08.
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