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2019 12 Meeting notes

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jhansonhpe edited this page Dec 6, 2019 · 1 revision

Attendees

  • Ryan Grant, SNL
  • Jeff Hanson, HPE
  • Steve Martin, Cray an HPE Company
  • Barry Rountree, LLNL
  • Sid Jana, Intel
  • Jeff Autor, HPE
  • Stephanie Brink, LLNL
  • Sridutt Bhalanchandra, NERSC
  • Todd Rosedahl, IBM

Agenda Review SC19

Notification from F2F needs to be coordinated with PowerStack.

Changing frequency what does it mean?

Barry mentioned Power9 has only a ratio for changing frequency. Tapathi is the expert. Todd explained that on chip controller can shift between GPU and CPU for limit. Steve said this is essentially a hint on how cap power? Yes said Todd. At some level it might now be able to be done as the power cap for the cpu might make it not work. Sid asked how an application programmer should choose and is it documented. Todd said pretty much no. There is some research but may not be public. Todd says there is documentation how you do it. Ryan/Todd think the usual pattern will be full way one or the other. But it is expressible as a ratio so it should be part of the spec.

Barry - HWP for Intel is ill documented and can it be included in spec.

At SC there were a variety of things on Power. We had a BoF, PS had a BoF, Green500 had a BoF. We educated the crowd on what PA does. See Jeff's notes. Ryan points to Fujitsu's power prediction poster.

Sid's notes

Poster 108: Power Prediction for High-Performance Computing https://sc19.supercomputing.org/proceedings/tech_poster/tech_poster_pages/rpost142.html

RESEARCH POSTERS: Nov 19-21, Tuesday through Thursday, 8:30-5:00; Location: E Concourse Poster 79: The HPC PowerStack: A Community-Wide Collaboration Toward an Energy Efficient Software Stack (Research Poster) Poster 18: Using Non Volatile Memories to build energy and cost efficient clusters (ACM Student Research Poster) Poster 23: PERQ: Fair and Efficient Power Management of Power-Constrained Large-Scale Computing Systems (ACM Student Research Poster) Poster 28: A Framework for Resilient and Energy-efficient Computing in GPU-accelerated Systems (ACM Student Research Poster) Poster 42: Power and Thermal Management Runtimes for HPC Applications in the Era of Exascale Computing (Doctoral Showcase Poster) Poster 93: Robust Data-Driven Power Simulator for Fast Cooling Control Optimization of a Large-Scale Computing System (Research Poster) Poster 108: Power Prediction for High-performance Computing (Research Poster)

PERQ paper PERQ paper : https://dl.acm.org/citation.cfm?id=3326607

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