1. Fourth International Workshop on Parallel Programming Models and Systems Software for High-End Computing (P2S2 ‘11)

2. Pavan Balaji, Argonne National Laboratory Organizing Committee Steering Committee William Gropp University of Illinois, Urbana Champaign Program Co-chairs Pavan Balaji Argonne National Laboratory Abhinav Vishnu Pacific Northwest National Laboratory Vijay Saraswat IBM Research P2S2 Opening Remarks (09/13/2011) Yong Chen Texas Tech University

3. Pavan Balaji, Argonne National Laboratory Workshop Goals  Primary Goal: Consolidating ideas for programming and managing high-end computing systems  Large machines almost always mean complex architectures –Sometimes it means a larger count of existing machines –Oftentimes it means disruptive changes to our current understanding of system architectures  We hope to serve as a venue for researchers to exchange ideas in how the community can build and use the world’s largest systems! P2S2 Opening Remarks (09/13/2011)

4. Pavan Balaji, Argonne National Laboratory Ready or Not, Here it Comes! P2S2 Opening Remarks (09/13/2011) 10 PFlops in 2011 100 PFlops in 2015 Expected to have an Exaflop system in 2018-2019 !

5. Pavan Balaji, Argonne National Laboratory Systems Are Already Very Complex P2S2 Opening Remarks (09/13/2011) Need to Convert System Capacity to System Capability

6. Pavan Balaji, Argonne National Laboratory Challenges for Massive Systems  Scalability –Systems with hundreds of thousands of cores exist We will have a million cores soon –Small performance problems can get brutal at scale !  Ease of Use (The “Wizard Gap”) –Not everyone is a parallel programming expert –… and yet, everyone wants the best performance  We live in a heterogeneous jungle –Multicore processors, Integrated Accelerator cores, GPUs, FPGAs  Reliability and Maintainability –Failure detection and transparency –Ease of administration P2S2 Opening Remarks (09/13/2011)

7. Pavan Balaji, Argonne National Laboratory Workshop Areas of Interest  Parallel Programming Models and their associated Runtime Systems and other Systems Software as applicable to high- end computing systems  Questions that we are pursuing: –How should the largest machines in the world be programmed? –What runtime systems and other system software is necessary to program and manage these massive systems efficiently and productively? P2S2 Opening Remarks (09/13/2011)

8. Pavan Balaji, Argonne National Laboratory Program Committee: 23 members  Ahmad Afsahi, Queen's University  George Almasi, IBM Research  Taisuke Boku, Tsukuba University  Ron Brightwell, Sandia National Laboratory  Surendra Byna, Lawrence Berkeley National Lab  Zhihui Du, Tsinghua University  Rahul Garg, IBM Research, India  Torsten Hoefler, Indiana University  Zhiyi Huang, University of Otago, New Zealand  Hai Jin, Huazhong University of Science and Tech.  Darren Kerbyson, Pacific Northwest National Lab  Zhiling Lan, Illinois Institute of Technology  Doug Lea, State University of New York at Oswego  Heshan Lin, Virginia Tech  Sonia Sachs, Department of Energy  Bronis de Supinski, Lawrence Livermore National Laboratory P2S2 Opening Remarks (09/13/2011)  Guangming Tan, Chinese Academy of Sciences  Rajeev Thakur, Argonne National Laboratory  Vinod Tipparaju, Oak Ridge National Laboratory  Jesper Traeff, University of Vienna, Europe  Bharadwaj Veeravalli, National Univ. of Singapore  Weikuan Yu, Auburn University  Yunquan Zhang, Chinese Academy of Sciences

9. Pavan Balaji, Argonne National Laboratory Paper Reviews  Totally 27 papers were considered for the workshop –5 reviews per paper –Program Committee telemeeting to finalize accepted papers –11 papers were accepted  Some of the accepted papers have been invited to submit to a special issue of the International Journal of Supercomputing (JoS) P2S2 Opening Remarks (09/13/2011)

10. Pavan Balaji, Argonne National Laboratory Logistics  Four sessions: –Three sessions for regular technical paper presentations –One session for an invited keynote talk  If you are a presenter: –Please meet your session chair before your session starts –Bios for each presenter needed –Session chairs might require presentations to be copied to a common presentation laptop before the session (please check with your session chair!)  Wireless Connectivity P2S2 Opening Remarks (09/13/2011)

11. Pavan Balaji, Argonne National Laboratory P2S2 Sessions  Session1: Invited Keynote Talk [Time: 9:00 am to 10:00 am]Session Chair: Pavan Balaji –“Exascale: Why is it Different?”, Prof. Barbara Chapman  Session 2: Programming Models and Runtime Systems [Time: 10:30 am to 12:20 pm]Moderator: Martin Schulz –"Recomposing An Irregular Algorithm Using a Novel Low-Level PGAS Model", Megan Vance and Peter Kogge –"A Middleware for Concurrent Programming in MPI Applications", Tobias Berka, Helge Hagenauer and Marian Vajtersic –"Kangaroo: Reliable execution of scientific applications with DAG programming model", Kai Zhang, Kang Chen, Wei Xue –"JETS: Language and System Support for Many Parallel Task Computing", Justin Wozniak and Michael Wilde P2S2 Opening Remarks (09/13/2011)

12. Pavan Balaji, Argonne National Laboratory P2S2 Sessions (contd.)  Session3: Scheduling and Workflows [Time: 1:30 pm to 3:20 pm]Session Chair: Vinod Tipparaju, AMD –"Energy-Constrained Dynamic Resource Allocation in a Heterogeneous Computing Environment", B. Dalton Young, Jonathan Apodaca, Luis Diego Briceno, Jay Smith, Sudeep Pasricha, Anthony A. Maciejewski, Howard Jay Siegel, Bhavesh Khemka, Shirish Bahirat, Adrian Ramirez, and Yong Zou –"Job Co-Scheduling on Coupled High-End Computing Systems", Wei Tang, Narayan Desai, Venkatram Vishwanath, Daniel Buettner, Zhiling Lan –"Integrating Scientific Workflows and Large Tiled Display Walls: Bridging the Visualization Divide", Hoang Nguyen, David Abramson, Blair Bethwaite, Minh Ngoc Dinh, Colin Enticott, Stephen Firth, Slavisa Garic, Ian Harper, Martin Lackmann, A.B.M. Russel, Stefan Schek, Mary Vail –"Restricted Admission Control in View-Oriented Transactional Memory", K. Leung and Z. Huang  Session 4: Communication and I/O [Time: 3:40 pm to 5:00 pm]Moderator: Brice Goglin, INRIA –"CellPilot: A Seamless Communication Solution for Hybrid Cell Clusters", Natalie Girard, William Gardner, John Carter and Gary Grewal –"Interval Based I/O: A New Approach to Providing High Performance Parallel I/O", Jeremy Logan and Phillip Dickens –"Improving Performance of the Irregular Data Intensive Application with Small Computation Workload for CMPs", Zhimin Gu P2S2 Opening Remarks (09/13/2011)

13. Pavan Balaji, Argonne National Laboratory Plans for P2S2 2012  Steering Committee: –William Gropp (University of Illinois, Urbana Champaign) –Vijay Saraswat (IBM Research)  Program Co-chairs: –Pavan Balaji (Argonne National Laboratory) –Abhinav Vishnu (Pacific Northwest National Laboratory) –Yong Chen (Oak Ridge National Laboratory)  Will continue to be associated with ICPP 2012  Like this year, we again plan to have special issue with a journal –Possibly the Journal of Supercomputing, again  Get Involved ! –Paper submissions –Workshop attendance –Advertizing P2S2 Opening Remarks (09/13/2011)