List of Recent Presentations

• Data, Issues, Opinion, and Conjecture on Climate Modeling in an Exascale World, Workshop on Computational Challenges in the Environmental Sciences, Daresbury Laboratory, Warrington, UK, July 14, 2008. ( PDF)
• Scalability Improvements in the Community Atmosphere Model (with A. A. Mirin), 13th Annual CCSM Workshop, The Village at Breckenridge, Breckenridge, CO, June 17-19, 2008. ( PDF)
• Performance Results for the new CAM Benchmark Suite (with A. A. Mirin), CCSM Software Engineering Working Group Meeting, 13th Annual CCSM Workshop, The Village at Breckenridge, Breckenridge, CO, June 17-19, 2008. ( PDF)
• SciDAC-2 CCSM Consortium: Software Engineering Update, CCSM Software Engineering Working Group Meeting, 13th Annual CCSM Workshop, The Village at Breckenridge, Breckenridge, CO, June 19, 2008. ( PDF)
• Performance Engineering for the Next Generation Community Climate System Model, Office of Advanced Scientific Computing Research, Office of Science, U.S. Department of Energy, Germantown, MD, June 9, 2008. ( PDF)
• Early Evaluation of the IBM BG/P, The 9th LCI International Conference on High-Performance Clustered Computing, National Center for Supercomputing Applications, University of Illinois, Urbana, IL, April 30, 2008. ( PDF)
• System Evaluation and Application Analysis: Examples of Empirical Computer Science, Computing Research Institute, Purdue University, West Lafayette, IN, April 28, 2008, and School of Informatics Colloquium, Indiana University, Bloomington, IN, May 2, 2008. ( PDF)
• Whole System Performance Instrumentation, Random Access, The Salishan Conference on High-Speed Computing, Salishan Lodge, Gleneden Beach, OR, April 23, 2008. ( PDF)
• Performance Engineering for the Next Generation Community Climate System Model (with R. Loy and A. A. Mirin), Computer Science Principal Investigator Meeting, DOE Office of Advanced Scientific Computing Research, Grand Hyatt Denver, Denver, CO, March 31, 2008. ( PDF)
• Enabling Highly Scalable Ultra-High Resolution Climate Simulations using the Community Climate System Model (with A. A. Mirin), 13th SIAM Conference on Parallel Processing for Scientific Computing, The Renaissance Atlanta Hotel Downtown, Atlanta, GA, March 13, 2008. ( PDF)
• Performance and Performance Scalability of the Community Atmosphere Model (with A. A. Mirin), 13th SIAM Conference on Parallel Processing for Scientific Computing, The Renaissance Atlanta Hotel Downtown, Atlanta, GA, March 13, 2008. ( PDF)
• Importance of Pre-Posting Receives, The Second Annual Cray Technical Workshop - USA, Hotel Nikko San Francisco, San Francisco, CA, February 27, 2008. ( PDF)
• Performance Evaluation and Analysis Consortium (PEAC) End Station, 2008 NCCS Users Meeting, Oak Ridge National Laboratory, Oak Ridge, TN. April 17, 2008. ( PDF)
• Recent Improvements to the Scalability of the Community Atmosphere Model (with A. A. Mirin), CCSM Atmosphere Model Working Group Meeting, National Center for Atmospheric Research, Boulder, CO, February 12, 2008. ( PDF)
• An overview of the new CAM benchmark suite, CCSM Atmosphere Model Working Group Meeting, National Center for Atmospheric Research, Boulder, CO, February 12, 2008. ( PDF)

• Performance Engineering Research Institute (PERI), International Conference for High Performance Computing, Networking, Storage and Analysis (SC07), Oak Ridge National Laboratory Exhibit Hall Booth, Reno-Sparks Convention Center, Reno, NV, November 12-15, 2007. ( PDF)
• Performance Evaluation and Analysis Consortium (PEAC) End Station, International Conference for High Performance Computing, Networking, Storage and Analysis (SC07), Oak Ridge National Laboratory Exhibit Hall Booth, Reno-Sparks Convention Center, Reno, NV, November 12-15, 2007. ( PDF)
• Cray XT4: An Early Evaluation for Petascale Scientific Computing (with J. Kuehn, S. Alam, R. Barrett, M. Fahey, J. Larkin, and R. Sankaran), International Conference for High Performance Computing, Networking, Storage and Analysis (SC07), Reno-Sparks Convention Center, Reno, NV, November 15, 2007. ( PDF)
• Performance Analysis in a Time of Development, The 8th International Workshop on Performance Analysis and Optimization of High-End Computing Systems, Reno-Sparks Convention Center, Reno, NV, November 11, 2007. ( PDF)
• Extending Scalability of the Community Atmosphere Model (with A. A. Mirin), 2007 DOE Day of Science, Knoxville Convention Center, Knoxville, TN, October 29, 2007. ( PDF)
• Extending Scalability of the Community Atmosphere Model (with A. A. Mirin), 2007 Climate Change Prediction Program Meeting, Omni Severin Hotel, Indianapolis, IN, September 17-19, 2007. ( PDF)
• CCSM Performance Engineering on the Cray XT4, Computing in the Atmospheric Sciences Workshop 2007, L'Imperial Palace Hotel, Annecy, France, September 12, 2007. ( PDF)
• Chasing Scalability Bottlenecks: Recent Activities, Workshop on Code Instrumentation and Modeling for Parallel Performance Analysis, Dagstuhl Seminar 07341, Schloss Dagstuhl, Wadern, Germany, August 22, 2007. ( PDF)
• Extending Scalability of the Community Atmosphere Model (with A. A. Mirin), 2007 SciDAC Conference, Westin Copley Place, Boston, MA, June 24-28, 2007. ( PDF)
• Results of the PERI Survey of SciDAC Applications (with B. de Supinski, J. Hollingsworth, S. Moore), 2007 SciDAC Conference, Westin Copley Place, Boston, MA, June 24-28, 2007. ( PDF)
• CAM Performance on Intel-based Clusters (with D. Shkurko), 12th Annual CCSM Workshop, The Village at Breckenridge, Breckenridge, CO, June 19-21, 2007. ( PDF)
• Extending Scalability of the Community Atmosphere Model (with A. A. Mirin), 12th Annual CCSM Workshop, The Village at Breckenridge, Breckenridge, CO, June 19-21, 2007. ( PDF)
• SciDAC-2 CCSM Consortium: Software Engineering Update, CCSM Software Engineering Working Group Meeting, 12th Annual CCSM Workshop, The Village at Breckenridge, Breckenridge, CO, June 20, 2007. ( PDF)
• Comparison of XT3 and XT4 Scalability, 49th Cray User Group Conference, Red Lion Hotel, Seattle, WA, May 7-10, 2007. ( PDF)
• XGC1 Performance Analysis: Recent Progress, CPES Spring 2007 Meeting, The New Frontier Hotel, Las Vegas, NV, April 30 - May 1, 2007.
• SciDAC-2 CCSM Consortium: Software Engineering Update, Software Engineering Working Group Meeting, Access Grid Meeting, March 16, 2007. ( PDF)
• Performance Engineering Research Institute: Application Engagement Progress, PERI Project Meeting, Courtyard Marriott Emeryville, Emeryville, CA, March 12-13, 2007.
• Performance Evaluation of the Cray XT3 Configured with Dual-Core Opteron Processors (with S. Alam, R. Barrett, J. Kuehn, J. Vetter), 12th ACM SIGPLAN Symposium on Principles and Practice of Parallel Programming, Hotel Valencia, San Jose, CA, March 14-17, 2007. ( PDF)
• Random Comparisons of Performance Between the Cray XT3 and Cray XT4 at ORNL, The First Annual Cray Technical Workshop - USA, Gaylord's Opryland Hotel, Nashville, TN, February 26-28, 2007. ( PDF)

• Performance Evaluation and Analysis Consortium (PEAC) End Station, SC2006, Oak Ridge National Laboratory Exhibit Booth, Tampa Convention Center Tampa, FL, November 13-16, 2006. ( PDF)
• Performance Engineering Research Institute (PERI), SC2006, Oak Ridge National Laboratory Exhibit Booth, Tampa Convention Center Tampa, FL, November 13-16, 2006. ( PDF)
• Performance Evaluation and Analysis Consortium (PEAC) End Station, Fall Creek Falls 2006: Computational Science at the Petascale, Fall Creek Falls State Resort Park, Pikeville, TN, October 22-24, 2006. ( PDF 1) ( PDF 2)
• Performance Engineering for the Next Generation Community Climate System Model, SciDAC-2 SEESM Kick-off Meeting, National Center for Atmospheric Research, Boulder, CO, October 11-12, 2006.
• Performance Engineering Research Institute: Application Engagement, PERI Kick-off Meeting, Argonne National Laboratory, Argonne, IL, September 26-27, 2006.
• Performance Engineering in the Community Atmosphere Model (with A. A. Mirin, J. B. Drake, W. B. Sawyer), 2006 SciDAC Conference, Hyatt Regency Denver at Colorado Convention Center, Denver, CO, June 25-29, 2006. ( PDF)
• SciDAC CCSM Consortium: Software Engineering Update, CCSM Software Engineering Working Group Meeting, 11th Annual CCSM Workshop, The Village at Breckenridge, Breckenridge, CO, June 22, 2006 ( PDF)
• Performance Engineering of the Community Atmosphere Model (with A. Mirin), 11th Annual CCSM Workshop, The Village at Breckenridge, Breckenridge, CO, June 20-22, 2006 ( PDF)
• CAM Performance on the X1E and XT3, 48th Cray User Group Conference, Palazzo dei Congressi, Lugano, Switzerland, May 8-11, 2006 ( PDF)
• Software and Performance Engineering of the Community Atmosphere Model (with A. Mirin), Science Team Meeting, Climate Change Prediction Program, Royal Sonesta Hotel Boston, Cambridge, MA, April 24-26, 2006 ( PDF)
• Topics in Performance and Performance Engineering in Climate Modeling, Workshop on Petascale Computation for the Geosciences, San Diego Supercomputer Center, University of California, San Diego, San Diego, CA, April 4, 2006. ( PDF)
• Performance Intercomparison of Community Atmosphere Model on High-End Computing Platforms (with A. Miring, W. Sawyer, L. Oliker, M. Wehner, D. Parks), SIAM Conference on Parallel Processing for Scientific Computing Sir Francis Drake Hotel, San Francisco, CA, February 23, 2006 ( PDF)
• Performance and Scalability of the Community Atmosphere Model, The 8th International Workshop on Next Generation Climate Models for Advanced High Performance Computing Facilities, Hilton Albuquerque, Albuquerque, NM February 23, 2006 ( PDF)
• Performance Evaluation of the Cray XT3 (with Jeffrey S. Vetter, Sadaf R. Alam, Thomas H. Dunigan, Jr., Mark R. Fahey, Philip C. Roth), SIAM Conference on Parallel Processing for Scientific Computing Sir Francis Drake Hotel, San Francisco, CA, February 22, 2006 ( PDF)
• Performance Characterization of the Cray X1E, SIAM Conference on Parallel Processing for Scientific Computing Sir Francis Drake Hotel, San Francisco, CA, February 22, 2006 ( PDF)
• Performance Evaluation and Analysis Consortium End Station, 2006 NCCS Users Meeting, Joint Institute for Computational Sciences, Oak Ridge National Laboratory, Oak Ridge, TN, February 14, 2006 ( PDF)
• SciDAC CCSM Consortium: Software Engineering Update, CCSM Software Engineering Working Group Meeting, Access Grid / National Center for Atmospheric Research, Boulder, CO, January 25, 2006, ( PDF)
• Benchmarking using the Community Atmospheric Model, 2006 SPEC Benchmark Workshop, Joe C. Thompson Conference Center, University of Texas, Austin, Texas, January 23, 2006. ( PDF)

• Tools or No tools? A parallel performance analysis case study (with P. Roth, J. Candy, L. Carrington, K. Huck, T. Kaiser, G. Mahinthakumar, A. Malony, S. Moore, D. Reed, H. Shan, S. Shende, A. Snavely, S. Sreepathi, F. Wolf, Y. Zhang), SC'05 Washington State Convention and Trade Center, Seattle, Washington, November 13, 2005.
• Early Evaluation of the Cray XT3 (with S. R. Alam, T. H. Dunigan, Jr, M. R. Fahey, P. C. Roth, J. S. Vetter), SC'05 Washington State Convention and Trade Center, Seattle, Washington, November 13, 2005. ( PDF)
• Portable Performance Characterization of the CCSM with TAU (with G. R. Carr, Jr, S. Shende, J. B. Drake, M. W. Ham, F. M. Hoffman), SC'05 Washington State Convention and Trade Center, Seattle, Washington, November 13, 2005. ( PDF)
• Performance and Performance Portability of the Community Atmospheric Model, Workshop on Performance and Productivity of Extreme-Scale Parallel Systems, 2005 LACSI Symposium, Eldorado Hotel, Santa Fe, NM, October 11, 2005. ( PDF)
• Cray X1: Architecture and Performance Evaluation, SIAM Annual Meeting, Hilton New Orleans, New Orleans, Louisiana, July 14, 2005. ( PDF)
• Performance Analysis of GYRO: A Tool Evaluation (with P. Roth, J. Candy, H. Shan, G. Mahinthakumar, S. Sreepathi, L. Carrington, T. Kaiser, A. Snavely, D. Reed, Y. Zhang, K. Huck, A. Malony, S. Shende, S. Moore, F. Wolk), 2005 SciDAC Conference, Grand Hyatt San Francisco, San Francisco, CA, June 26-30, 2005. ( PDF)
• SciDAC CCSM Consortium: Overview and Recent Progress, Software Engineering Working Group Meeting, Tenth Annual CCSM Workhop, Inn at Breckenridge, Breckenridge, CO, June 23, 2005. ( PDF)
• Optimization of CAM with Finite-Volume Dynamical Core on the Cray X1 (with A. A. Mirin), Tenth Annual CCSM Workhop, Inn at Breckenridge, Breckenridge, CO, June 21-23, 2005. ( PDF)
• Comparative Analysis of Interprocess Communication on the X1, XD1, and XT3, 47th Cray User Group Conference, Albuquerque Marriott Pyramid North, Albuquerque, New Mexico, May 18, 2005. ( PDF)
• SciDAC CCSM Consortium: Software Engineering Activities, SciDAC CCSM Consortium Group Meeting, Argonne National Laboratory, Argonne, Illinois, March 17, 2005. ( PDF)

• Porting and Performance of the Community Climate System Model (CCSM3) on the Cray X1 (with G. R. Carr Jr., J. B. Drake, M. W. Ham, F. M. Hoffman, M. J. Cordery, and I. L. Carpenter), SC'04 David L. Lawrence Convention Center, Pittsburgh, Pennsylvania, November 9, 2004. ( PDF)
• Performance Evaluation of the SGI Altix 3700 (with T. H. Dunigan, Jr., M. R. Fahey, and J. S. Vetter), SC'04 David L. Lawrence Convention Center, Pittsburgh, Pennsylvania, November 9, 2004. ( PDF)
• Vectorizing the CCSM: SciDAC's Contribution (and other feats and marvels of software engineering), Fifth Science Team Meeting, DOE Climate Change Prediction Program, Seattle Hilton Hotel, Seattle, Washington, October 19, 2004. ( PDF)
• The Performance Evolution of the Parallel Ocean Program on the Cray X1, Workshop on Performance and Productivity of Extreme-Scale Parallel Systems, 2004 LACSI Symposium, Eldorado Hotel, Santa Fe, New Mexico, October 12, 2004. ( HTML) ( PDF)
• Federation Performance on the ORNL p690 Cluster, ScicomP 10, Texas Advanced Computing Center, Austin, Texas, August 12, 2004. ( HTML) ( PDF)
• Cray X1 Optimization: A Customer's Perspective, 46th Cray User Group Conference, Knoxville Marriott, Knoxville, Tennessee, May 18, 2004. ( HTML) ( PDF)
• The Performance Evolution of the Parallel Ocean Program on the Cray X1, 46th Cray User Group Conference, Knoxville Marriott, Knoxville, Tennessee, May 18, 2004. ( HTML) ( PDF)
• Cray X1 Evaluation: Overview and Scalability Analysis, SIAM Conference on Parallel Processing for Scientific Computing 2004, Hyatt at Fisherman's Wharf, San Francisco, California, February 26, 2004. (Minor variations of this talk were also given at the ANL/ORNL Site Visit of the National Research Council/National Academies Computer Science and Telecommunications Board, Argonne National Laboratory, Argonne, Illinois, March 2, 2004 and at the Cray X1 Review, Oak Ridge National Laboratory, Oak Ridge, Tennessee, February 10, 2004.) ( HTML)

• Early Evaluation of the Cray X1, SC2003, Phoenix Convention Center, Phoenix, Arizona, November 19, 2003. ( HTML)
• Early Evaluation of the Cray X1 - Part 1.5, SC2003, Cray Exhibit Booth, Phoenix Convention Center, Phoenix, Arizona, November 18, 2003. ( HTML)
• Latest Performance Results from ORNL: Cray X1 and SGI Altix, System and Application Performance Workshop, 2003 LACSI Symposium, Eldorado Hotel, Santa Fe, New Mexico, October 27, 2003. (A minor variation of this talk was also given at the Computer Science Department, University of Tennessee, Knoxville, Tennessee, January 9, 2004.) (HTML)
• CCSM Component Performance Benchmarking and Status of the Cray X1 at ORNL, Computing in the Atmospheric Sciences Worksop 2003, L'Imperial Palace Hotel, Annecy, France, September 10, 2003. ( HTML)
• Early Evaluation of the Cray X1 at Oak Ridge National Laboratory, 45th Cray User Group Conference, Hyatt on Capital Square, Columbus, Ohio, May 13, 2003. ( HTML)
• Recent Performance Improvements in the Community Atmospheric Model (CAM2), Climate Change Prediction Program Science Team Meeting, Mills House Hotel, Charleston, South Carolina, March 18, 2003. ( PDF)

• Scaling the Unscalable: A Case Study on the AlphaServer SC, SC2002, Baltimore Convention Center, Baltimore, Maryland, November 19, 2002. ( HTML)
• Early Evaluation of the IBM p690, SC2002, Baltimore Convention Center, Baltimore, Maryland, November 17, 2002. ( HTML)
• Recent Performance Studies SciDAC Climate Project Access Grid Meeting August 5, 2002. ( HTML)
• Practical Performance Evaluation of the p690 ORNL Power4 Workshop, University of Tennessee, Knoxville, TN, July 25, 2002. ( HTML)
• Early Evaluation Results for the p690 System at Oak Ridge National Laboratory ScicomP5, Daresbury Laboratory, Daresbury, England, May 9, 2002. ( HTML)

• Allreduce Performance and Performance Characterization on Compaq and IBM Cluster Architectures SC2001, Denver Convention Center, Denver, Colorado, November 13, 2001. ( HTML)
• Performance Evaluation of Allreduce ScicomP, The Radisson Summit Hill, Knoxville, Tennessee, October 9, 2001. ( HTML)
• Two Performance Studies in Support of the NSF/DOE Coupled Climate Model Workshop on the Performance Characterization of Algorithms, Lawrence Livermore National Laboratory, Livermore, California, July 19, 2001. ( HTML)
• Promise and Problems in the Performance Characterization of Algorithms Workshop on the Performance Characterization of Algorithms, Oakland Marriott Hotel, Oakland, California, July 16-17, 2001. (HTML)
• Designing Code and Data Structures for Portable Performance, SIAM Conference on Parallel Processing for Scientific Computing, Portsmouth, VA, March 12, 2001. ( HTML)

• Evaluation of Early Systems ORNL Booth, SC'2000, Dallas Convention Center, Dallas, Texas, November 6-9, 2000. ( HTML)
• Performance Comparison of Winterhawk I and Winterhawk II Systems ScicomP 2000 San Diego Supercomputing Center, La Jolla, California, August 14, 2000. ( HTML)
• Kernel and Application Code Performance for a Spectral Atmospheric Global Circulation Model on the Cray T3E and IBM SP NERSC Users Group Meeting Oak Ridge, Tennessee, June 6, 2000. ( HTML)
• Performance Evaluation of the IBM SP and the Compaq AlphaServer SC, ACM International Conference of Supercomputing 2000 Santa Fe, New Mexico, May 10, 2000. ( HTML)

• Performance Tuning and Evaluation of a Parallel Community Climate Model, SC99, Portland, Oregon, November 16, 1999. ( HTML)
• Performance Tuning and Evaluation of a Parallel Community Climate Model on the IBM SP3, SP SciComp 1999, IBM Thomas J. Watson Research Center, Yorktown Heights, New York, October 8, 1999. ( HTML)
• Tuning Message Passing Performance on the T3E: Experiences with a Spectral Atmospheric Circulation Model, NERSC T3E Training, Oak Ridge National Laboratory, Oak Ridge, Tennessee, January 22, 1999. ( HTML)
• Performance Evaluation for Spectral Atmospheric Global Circulation Models, Center for Computational Sciences, University of Kentucky, Lexington, Kentucky, January 19, 1999. ( HTML)

• Tutorial on Performance Evaluation of Parallel Applications: Measurement, Modeling, and Analysis, Supercomputing 98, Orlando, FL, November 8, 1998. ( HTML)
• Benchmarking Beatitudes, Platitudes, and Attitudes, Workshop on Numerical Benchmarks for the Climate/Ocean/Weather Modeling Community, National Center for Atmospheric Research, Boulder, CO. September 22-23, 1998. ( HTML)
• Impact of Communication Protocol on Performance, Second International Workshop on Software Engineering and Code Design in Parallel Meteorological and Oceanographic Applications, Scottsdale, Arizona, June 15-18, 1998. ( HTML)

• Tutorial on Performance Evaluation of Parallel Applications: Measurement,Modeling, and Analysis, Supercomputing 97, San Jose, CA, November 16, 1997. ( HTML)

• MPI Performance Evaluation and Characterization Using a Compact Application Benchmark Code, Second MPI Developers Conference and Users' Meeting, University of Notre Dame, July 1-2, 1996. ( HTML)
• MPI on the Paragon, ORNL Paragon Local Users Group Meeting, Oak Ridge, TN, April 24, 1996. ( HTML)

• Parallel Spectral Transform Algorithms: The Final Report, CHAMMP Science Team Meeting, Rockville, MD, October 3, 1995. ( HTML)

• Experiences with Instrumenting Message-Passing Fortran Programs, Workshop on Parallel Computers Systems Performance: A Dialogue Between Users and Developers, Keystone, CO, April 7, 1993. ( PS)

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Patrick H. Worley / (worleyph@ornl.gov)
Last Modified Friday, 29-Aug-2008 16:28:39 EDT.