4th US ATLAS HPC Meeting

US/Pacific
59-4102 (LBNL)

59-4102

LBNL

Description

The fourth in a series of events promoting collaboration between US ATLAS Computing and Software and the US HPC labs.

One goal of this meeting is to form US ATLAS and HPC expert teams to focus on US ATLAS HPC challenges. These teams will first collaborate on a joint talk (or two "twin" talks) on one or more challenge and later work together for half a day on a program of work to address these challenges.

LBL CRD and NERSC divisions will host the meeting at LBL Wang Hall (building 59). Breakfast, coffee and a working lunch on Sep 26 will be provided. We will organize a dinner downtown Berkeley on Sep 26.We recommend booking a room at the LBL guest house but availability for Sep 25-28 is limited. Please make a reservation ASAP directly at https://www.resontheweb.com/blgh.html. Indicate you are visiting the Computational Research Division and that your LBNL contact is Paolo Calafiura pcalafiura@lbl.gov

If you can't join us in Berkeley,  you can attend the plenary sessions remotely via zoom:

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Meeting ID: 119 052 846
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Registration
Participants
Participants
  • Alex Sim
  • alexei klimentov
  • Andrew Hanushevsky
  • Aydin Buluc
  • Charles Leggett
  • Chin Guok
  • Chris Bee
  • Douglas Benjamin
  • Eric Lancon
  • Glenn Lockwood
  • Heather Gray
  • Inder Monga
  • Jack Wells
  • James Cochran
  • Kaushik De
  • Kerstin Kleese van Dam
  • Marcel Demarteau
  • Marilena Bandieramonte
  • Miha Muskinja
  • Paolo Calafiura
  • Peter Nugent
  • Peter van Gemmeren
  • Philippe Canal
  • Richard Cziva
  • Seth Johnson
  • Shantenu Jha
  • Shawn McKee
  • Srini Rajagopalan
  • Torre Wenaus
  • Wahid Bhimji
  • Wei Yang
  • Xiangyang Ju
  • Thursday, 26 September
    • 08:15 09:00
      Breakfast 45m 59-4102

      59-4102

      LBNL

    • 09:00 14:15
      Introduction: Status Reports on Current Activities 59-4102

      59-4102

      LBNL

    • 14:00 18:00
      US ATLAS Computing Challenges: Define US ATLAS Computing Challenges for HL-LHC 59-4102

      59-4102

      LBNL

      • 14:00
        Networking and Remote Data Access 40m

        Includes ESnet/ATLAS/CMS network studies, iDDS and other data lake initiatives, potentially remote data access from Tape Carousel.

        Speakers: Inder Monga (ESnet), Kaushik De (UTA), Shawn McKee (UMich), Torre Wenaus (BNL)
      • 15:30
        ATLAS I/O on HPC 40m

        A discussion on I/O challenges for HPC production jobs. Includes Event I/O of course (TMPIRoot, HDF5, object stores like HEPnOS, etc) but also DB access for reconstruction jobs, lustre and small files. containers and job initialization.

        Speakers: Glen Lockwood (NERSC), Peter van Gemmeren (ANL)
      • 16:20
        Tea 10m
      • 16:30
        Porting algorithms to GPU 40m

        What is the goal? Reduce latency when running trigger algs, increase throughput on HPCs
        What are the challenges? Insufficient parallelism, code size, ...
        Examples: track seeding, Fast Chain, Geant X
        CCE Portable Parallelization Strategies
        ML algorithms (Jet Classification, Tracking,...)
        ...

        Speakers: Brian Friesen (NERSC), Charles Leggett (LBNL)
      • 17:20
        Job scheduling on next generation HPCs 40m

        event service, raythena, yoda, pilot 2, jumbo jobs and their interactions

        Speakers: Doug Benjamin (ANL), Miha Muskinja, Rollin Thomas (NERSC)
    • 19:00 21:00
      Workshop Dinner 2h Great China Berkeley

      Great China Berkeley

      Please sign up at https://doodle.com/poll/u3ntngrwv535dxbz by Monday Sep 23

  • Friday, 27 September
    • 08:00 10:50
      Breakouts: Ray Event Service discussion 50B-2222

      50B-2222

      LBNL

      Conveners: Doug Benjamin (ANL), Miha Muskinja
      • 08:00
        Discussion 2h

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        Meeting ID: 430 523 132
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    • 08:30 09:00
      Breakfast 30m 59-3101

      59-3101

      LBNL

    • 09:00 11:50
      Breakouts: Form a group per joint project 59-3101

      59-3101

      LBNL

    • 09:00 12:00
      Breakouts: TBN 59-3054

      59-3054

      LBNL

      • 09:00
        Discussion 2h

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    • 09:00 11:50
      Breakouts: US ATLAS HPC Strategy (Management only) 59-4022

      59-4022

      LBNL

      Convener: Paolo Calafiura
      • 09:00
        HPC labs and LHC computing 1h

        A discussion on avenues to continue collaborating with the HPC labs, how to be involved in the various "Early Science" initiatives, and how to secure long-term allocations for ATLAS.

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        Meeting ID: 338 133 490
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      • 10:00
        Coffee break 20m
      • 10:20
        ATLAS, CCE, and IRIS-HEP 1h 30m

        How can ATLAS contribute effectively to the NSF and DOE initiatives dedicated to cross-cutting HEP computing and software R&D? How do we make sure these initiatives are and stay aligned with ATLAS R&D towards HL-LHC?

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    • 09:00 10:30
      Breakouts: US ATLAS and Geant X 50B-1237

      50B-1237

      Convener: Philippe Canal (FNAL)
      • 09:00
        Discussion 1h

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        Meeting ID: 940 989 436
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    • 12:00 13:00
      Breakouts: Wrap-up: one slide report from each breakout 59-3101

      59-3101

      LBNL

      • 12:00
        Reports from Priority Areas 1h

        10' per area including discussion