16th Workshop

Distributed Virtual Supercomputers

Santa Barbara, California, March 12-15, 2012

SOS is an invitation-only series of highly interactive workshops on Distributed Supercomputing organized by Sandia National Laboratories, Oak Ridge National Laboratories, and the Swiss National Supercomputing Center.

Quantifying the Cost of Exascale

The theme of the 2012 workshop is "Quantifying the Cost of Exascale." We expect to discuss the following topics and issues:

  • Energy to solution
  • Time to solution
  • Bytes vs FLOPS
  • R&D Investments
  • Technology development costs
  • Programming models
  • Application development costs


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Monday, March 12, 2012
17:00 – 20:00Welcome reception and registration
Tuesday, March 13, 2012
7:00 – 8:00Breakfast
8:00 – 8:15Welcome and Introduction – Jim Ang, SNL
8:15 – 9:15Keynote: Critical Technologies for Exascale – Bob Lucas, USC/ISI
9:15 – 9:45Design Space Exploration – Sudip Dosanjh, SNL
9:45 – 10:15Need for Domain Specific Approaches – David Bernholdt, ORNL
10:15 – 10:30Break
10:30 – 11:00Blackcomb Hardware software Co-design for Non-Volatile Memory in Exascale Systems – Jeff Vetter, ORNL
11:00 – 12:30Panel: The Different Dimensions of Exascale Cost
Steve Poole, ORNL; Jim Laros, SNL; Thomas Schulthess, CSCS; TBD, LANL; Alessandro Curioni, IBM-Zurich
12:30 – 18:00Open for Informal discussions
18:00 – 19:30SOS16 Banquet Dinner
19:30 – 21:30Vendor Session: What do you see as the challenges to Exascale?
Industry perspectives on opportunities for co-design
20 minute presentations by our hardware-oriented industry sponsors
Mike Schulte, AMD; Giri Chukkapali Appro; John Levesque, Cray; Wilf Pinfold, Intel; Steve Scott, Nvidia; Lim Goh, SGI
21:00 – 23:30Hosted reception
Wednesday, March 14, 2012
7:00 – 8:00Breakfast
Hardware Perspectives on Co-design
8:15 – 8:45Future High Performance CPU and System Architectures – Dave Resnick, SNL
8:45 – 9:15Co-design perspectives from a Data Motion Architect – Ronald Luitjen, IBM Zurich
9:15 – 9:45Co-design of SoC capabilities for the Cloud – Karl Freund, Calxeda
9:45 – 10:00Break
Runtime Systems and System SW challenges
10:00 – 10:30Virtualization for runtime software R&D – Patrick Bridges, U-NM
10:30 – 11:00Resilience for permanent, transient, and undetected errors – Christian Engelmann, ORNL
11:00 – 11:30Scalable heterogeneous computing – Sadaf Alam, CSCS
11:30 – 12:00X-caliber and XGC System Software R&D – Kyle Wheeler, SNL
12:00 – 19:30Open for Informal discussions
19:30 – 21:30Panel: Exascale technology overlaps and synergies
Non-determinism and uncertainty quantification
In situ data analysis and on-node support for debugging?
David Rogers, SNL; Clayton Webster, ORNL; Scott Klasky, ORNL; Dave Norton, PGI; Dennis Andrews, Roguewave
21:00 – 23:30Hosted reception
Thursday, March 15, 2012
7:00 – 8:00Breakfast
Modeling and Simulation Efforts
8:00 – 8:30CASL Accomplishments – John Turner, ORNL
8:30 – 9:00ASCR Combustion Co-design Center, ExaCT – Jackie Chen, SNL
9:00 – 9:30Blue Brain Project – Felix Schürmann, EPFL
9:30 – 10:00Multiphysics Simulation at Exascale – Rob Neely, LLNL
10:00 – 10:15Break
10:15 – 11:15Panel: Future Visions
What was heard at SOS16 and where we are headed
Thomas Schulthess, CSCS; Jeff Nichols, ORNL; Sudip Dosanjh, SNL; Andrew Jones, NAG
11:15 – 11:30Invitation to SOS17 – Al Geist, ORNL


Marc AdamsNvidia
Sadaf AlamCSCS
Dennis AndrewsRogueWave
Jim AngSNL
Dorian ArnoldUNM
Ray BairANL
Bill BarthUniv. Texas
David BernholdtORNL
Bill BrantleyAMD
Patrick BridgesUNM
Ron BrightwellSNL
Dee CadenaSNL
Bill CampConsultant
Jackie ChenSNL
Giri ChukkapalliAppro
Robert ClaySNL
Paul CookCray
Jim CostaSNL
Alessandro CurioniIBM
John DalyDoD/CEC
Steve DerenthalExxonmobil
Sudip DosanjhSNL
Christian EngelmannORNL
Kurt FerreiraSNL
Karl FreundCalxeda
Al GeistORNL
Eng-Lim GohSGI
Simon HammondSNL
Gilbert HendrySNL
Mike HerouxSNL
James JeffersIntel
Andrew JonesNAG
Larry KaplanCray
Moe KhaleelPNNL
Scott KlaskyORNL
John LabrAppro
Jim LarosSNL
Matt LeiningerLLNL
John LevesqueCray
Bob LucasUSC/ISI
Ronald LuijtenIBM
Barney MaccabeORNL
Bronson MesserORNL
Rob NeelyLLNL
Jeff NicholsORNL
Dave NortonPGI
Ron OldfieldSNL
Wilfred PinfoldIntel
Steve PooleORNL
Ram RajagopalanExxon/Mobil
David ResnickSNL
Arun RodriguesSNL
David RogersSNL
Ali SaidiARM
Mike SchulteAMD
Thomas SchulthessCSCS
Felix SchürmannEPFL
Steve ScottNvidia
Mark SeagerIntel
Doug SpraggExxon/Mobil
Thomas SterlingUniv. of Indiana
Deborah TavennerIBM
Jim TomkinsConsultant
Matthias TroyerETH Zurich
John TurnerORNL
Jeff VetterORNL
Mike VildibillAppro
David WangInphi
Clayton WebsterORNL
Jack WellsORNL
Kyle WheelerSNL


The SOS16 workshop will be held at:

Fess Parker’s Doubletree by Hilton Resort in Santa Barbara, California

Hotel lodging can be arranged by calling (805) 884-8511 or (800) 879-2929.

Room block name is: SOS16.

Room block closes February 22, 2012.

A 72-hour cancellation policy applies for individual rooms.


General Chair

Sudip Dosanjh, Sandia National Laboratories

Program Chair

Jim Ang, Sandia National Laboratories

Local Arrangements

Dee Cadena, Sandia National Laboratories

Organizing Committee

  • Jim Ang, Sandia National Laboratories
  • Ron Brightwell, Sandia National Laboratories
  • Al Geist, Oak Ridge National Laboratory
  • Barney Maccabe, Oak Ridge National Laboratory
  • Thomas Schulthess, Swiss Supercomputing Center

Registration Instructions

We are required to cover the cost of food and essential expenses from the registration fee, which is as follows:

  • $300.00 for attendee
  • $85.00 for additional guest

Register here.


We would like to acknowledge the following sponsors for their generous support of the SOS16 Workshop:


Santa Barbara, California can be reached by the following airports:

  • Santa Barbara Municipal Airport has several regional jet flights on Alaska/SkyWest, American, Frontier, United, and US Airways.
  • Burbank’s Bob Hope Airport and drive 1 hour 40 minutes.
  • Los Angeles’ LAX airport and drive 1 hour 50 minutes.

Map and driving directions to Fess Parker’s DoubleTree Resort are here.