1 NERSC User Group Business Meeting, June 3, 2002 High Performance Computing Research Juan Meza Department Head High Performance Computing Research

2 NERSC User Group Business Meeting, June 3, 2002 Computational Research in Balance with NERSC Center  A organizational balance between production facility and research activities is essential for the success of both  the NERSC Center benefits directly from the DOE funded computer science research project  the requirements of the NERSC Center stimulate computer science research and keep it closely relevant to the DOE mission

3 NERSC User Group Business Meeting, June 3, 2002 National Energy Research Scientific Computing ( NERSC ) Division DIVISION DIRECTOR HORST SIMON DIVISION DEPUTY DIRECTOR WILLIAM KRAMER CENTER FOR BIOINFORMATICS & COMP. GENOMICS MANFRED ZORNADVANCED SYSTEMS SYSTEMS TAMMY WELCOME DIVISION ADMINISTRATOR & FINANCIAL MANAGER WILLIAM FORTNEY DISTRIBUTED SYSTEMS DEPARTMENT WILLIAM JOHNSTON Department Head DEB AGARWAL, Deputy HIGH PERFORMANCE COMPUTING DEPARTMENT WILLIAM KRAMER Department Head CHIEF TECHNOLOGIST DAVID BAILEY COMPUTATIONAL SYSTEMS JIM CRAW COMPUTER OPERATIONS NETWORKING SUPPORT WILLIAM HARRIS NETWORKING & SECURITY HOWARD WALTER USER SERVICES FRANCESCA VERDIER HENPCOMPUTING DAVID QUARRIE MASSSTORAGE NANCY MEYER HIGH PERFORMANCE COMPUTING RESEARCH DEPARTMENT Juan Meza Department Head APPLIED NUMERICAL ALGORITHMS PHIL COLELLA CENTER COMPUTATIONAL SCIENCE & ENGR. JOHN BELL FUTURE TECHNOLOGIES TECHNOLOGIES BRENT GORDA IMAGING & COLLABORATIVE COMPUTING BAHRAM PARVIN SCIENTIFICCOMPUTING ESMOND NG VISUALIZATION WES BETHEL SCIENTIFIC DATA MANAGEMENT ARIE SHOSHANI COLLABORATORIES DEB AGARWAL DATA INTENSIVE DIST. COMPUTING BRIAN TIERNEY DISTRIBUTED SECURITY RESEARCH MARY THOMPSON NETWORKING WILLIAM JOHNSTON (acting) Rev: GRID TECHNOLOGIES KEITH JACKSON

4 NERSC User Group Business Meeting, June 3, 2002 Future Technology Group  Mission is to investigate, understand and recommend technologies of importance to the NERSC center and its user base in the 3-5 year timeframe  Checkpoint/Restart to enable production computing for Linux  Target OS is Linux; User or system administrator initiated  Specifically aimed at parallel MPI jobs  Part of Scalable Systems Software SciDAC project  Infiniband Study  IB is the next “big thing” in system area networking  Switched fabric, O/S bypass, one-sided messaging, self healing  IPv6 addressing

5 NERSC User Group Business Meeting, June 3, 2002 Big Data and Remote Visualization: Visapult  Motivation: remote and interactive visualization of large scientific data over a wide area network.  Framework and application for remote direct volume visualization of large structured mesh data.  Visapult winner of SC2001 Bandwidth Challenge Source Volume

6 NERSC User Group Business Meeting, June 3, 2002 Scientific Computing Group  Computational materials science  electronic structure calculations, molecular dynamics  Environmental and earth sciences  climate modeling, groundwater flow simulation, modeling of the earth  Computational Physics  cosmic microwave background radiation, high-energy neutrino detection, accelerator modeling  Numerical linear algebra  eigen/singular value computations, sparse matrix computations  extended precision basic linear algebra subprograms  environments and tools

7 NERSC User Group Business Meeting, June 3, 2002 Advanced Computational Testing and Simulation (ACTS)  Make ACTS tools available on NERSC platforms  Enable large scale scientific applications  Extended support for experimental software  Perform independent evaluation of tools  Provide consistent application interfaces  Coordinate efforts with other supercomputing centers  Educate and train  Provide technical support  Maintain ACTS information center (

8 NERSC User Group Business Meeting, June 3, 2002 Use of ACTS Tools Scattering in a quantum system of three charged particles (Rescigno, Baertschy, Isaacs and McCurdy, Dec. 24, 1999), SuperLU. Cosmic Microwave Background Analysis, BOOMERanG collaboration, MADCAP code (Apr. 27, 2000), ScaLAPACK.

9 NERSC User Group Business Meeting, June 3, 2002 Vision  Listening mode  Some observations (after 2 months)  Clear that NERSC is doing world class research  Leaders in the application of modeling and simulation to science  Good balance of applications, computer science, and algorithms that benefits the entire community  Challenges  Delivery on SciDAC goals  Earth Simulator response: advanced architecture research  Maintaining a balance that will successful track record