NERSCPowering Scientific Discovery Since 1974


Group Leader
Data & Analytics Services
Phone: (510) 486-7752
1 Cyclotron Road
Mail Stop 50F1650
Berkeley, CA 94720 US

Biographical Sketch

Prabhat leads the Data and Analytics Services team at NERSC. His current research interests include scientific data management, parallel I/O, high performance computing and scientific visualization. He is also interested in applied statistics, machine learning, computer graphics and computer vision. Prabhat received an ScM in Computer Science from Brown University (2001) and a B.Tech in Computer Science and Engineering from IIT-Delhi (1999). He is currently pursuing a PhD in the Earth and Planetary Sciences Department at U.C. Berkeley.

Journal Articles

Wei-Chen Chen, George Ostrouchov, Dave Pugmire, Prabhat, Michael Wehner, "Exploring multivariate relationships in Large Spatial Data with Parallel Model-Based Clustering and Scalable Graphics", Technometrics, 2013,

Daithi Stone, Chris Paciorek, Prabhat, Pardeep Pall, Michael Wehner, "Inferring the anthropogenic contribution to local temperature extremes", PNAS, 2013, 110 (7),

Dean N. Williams, Timo Bremer, Charles Doutriaux, John Patchett, Galen Shipman, Blake Haugen, Ross Miller, Brian Smith, Chad Steed, E. Wes Bethel, Hank Childs, Harinarayan Krishnan, Prabhat, Michael Wehner, Claudio T. Silva, Emanuele Santos, David Koop, Tommy Ellqvist, Huy T. Vo, Jorge Poco, Berk Geveci, Aashish Chaudhary, Andrew Bauer, Alexander Pletzer, Dave Kindig, Gerald L. Potter, Thomas P. Maxwell, "The Ultra-scale Visualization Climate Data Analysis Tools: Data Analysis and Visualization for Geoscience Data", IEEE Special Issue: Cutting-Edge Research in Visualization, 2013,

Erin LeDell, Prabhat, Dmitry Yu Zubarev, Brian Austin, Jr. William A. Lester, "Classification of Nodal Pockets in Many-Electron Wave Functions via Machine Learning", Journal of Mathematical Chemistry, January 1, 2012, 50:2043,

Michael Philpott, Prabhat, Yoshiyuki Kawazoe, "Magnetism and Bonding in Graphene Nanodots with H modified Edge and Apex", J. Chem Physics, 2011, 135,

Richard Martin, Prabhat, David Donofrio, Maciek Haranczyk, "Accelerating Analysis of void spaces in porous materials on multicore and GPU platforms", International Journal of High Performance Computing Applications, 2011, doi: 10.1177/1094342011431591

Prabhat, "ExaHDF5: An I/O Platform for Exascale Data Models, Analysis and Performance", DOE/ASCR Exascale kickoff meeting, 2011,

H. Childs, D. Pugmire, S. Ahern, B. Whitlock, M. Howison, Prabhat, G. Weber, E. W. Bethel, "Extreme Scaling of Production Visualization Software on Diverse Architectures", Computer Graphics and Applications, May 2010, 30 (3):22 - 31,

E. W. Bethel, C. Johnson, S. Ahern, J. Bell, P.-T. Bremer, H. Childs, E. Cormier-Michel, M. Day, E. Deines, T. Fogal, C. Garth, C. G. R. Geddes, H. Hagen, B. Hamann, C. Hansen, J. Jacobsen, K. Joy, J. Kr\ uger, J. Meredith, P. Messmer, G. Ostrouchov, V. Pascucci, K. Potter, Prabhat, D. Pugmire, O. R\ ubel, A. Sanderson, C. Silva, D. Ushizima, G. Weber, B. Whitlock, K. Wu., "Occam s Razor and Petascale Visual Data Analysis", Journal of Physics Conference Series, Proceedings of SciDAC 2009, 2009, 180:012084,

Maciej Haranczyk, Richard Martin, Prabhat, James Sethian, "Computational Approaches for the High-Throughput Analysis of Porous materials for Energy related applications", SciDAC 2011, 1969,

Conference Papers

E. Wes Bethel, Prabhat, Suren Byna, Oliver R\ ubel, K. John Wu, Michael Wehner, "Why High Performance Visual Data Anaytics is Both Relevant and Difficult", Visualization and Data Analysis, IS\&T/SPIE Electronic Imaging 2013, San Francisco, CA, USA, 2013,

Suren Byna, Andrew Uselton, Prabhat, David Knaak, Helen He, "Trillion Particles, 120,000 cores, and 350 TBs: Lessons Learned from a Hero I/O Run on Hopper", Cray User Group Meeting, 2013,

Surendra Byna, Jerry Chou, Oliver R\ ubel, Prabhat, Homa Karimabadi, William S. Daughton, Vadim Roytershteyn, E. Wes Bethel, Mark Howison, Ke-Jou Hsu, Kuan-Wu Lin, Arie Shoshani, Andrew Uselton, Kesheng Wu, "Parallel I/O, analysis, and visualization of a trillion particle simulation", SC 12, Los Alamitos, CA, USA, IEEE Computer Society Press, 2012, 59:1--59:1,

Allen R. Sanderson, Brad Whitlock, Oliver R\ ubel, Hank Childs, Gunther H. Weber, Prabhat, Kesheng Wu, "A System for Query Based Analysis and Visualization", Third International EuroVis Workshop on Visual Analytics EuroVA 2012, Vienna, Austria, 2012, 25--29, LBNL 5507E, doi: 10.2312/PE/EuroVAST/EuroVA12/025-029

E. Wes Bethel, Surendra Byna, Jerry Chou, Estelle Cormier-Michel, Cameron G. R. Geddes, Mark Howison, Fuyu Li, Prabhat, Ji Qiang, Oliver R\ ubel, Robert D. Ryne, Michael Wehner, Kesheng Wu, "Big Data Analysis and Visualization: What Do LINACS and Tropical Storms Have In Common?", 11th International Computational Accelerator Physics Conference, ICAP 2012, Rostock-Warnem\ unde, Germany, 2012,

Mehmet Balman, Eric Pouyoul, Yushu Yao, Loring E. Wes Bethel, Prabhat, John Shalf, Alex Sim, Brian L. Tierney, "Experiences with 100G Network Applications", Proceedings of the 5th International Workshop on Data Intensive and Distributed Computing (DIDC 2012), Delft, Netherlands, 2012,

Prabhat, Oliver R\ ubel, Surendra Byna, Kesheng Wu, Fuyu Li, Michael Wehner, E. Wes Bethel, "TECA: A Parallel Toolkit for Extreme Climate Analysis", Third Worskhop on Data Mining in Earth System Science (DMESS 2012) at the International Conference on Computational Science (ICCS 2012), Omaha, Nebraska, 2012,

Surendra Byna, Prabhat, Michael F. Wehner, Kesheng John Wu, "Detecting atmospheric rivers in large climate datasets", PDAC 11, New York, NY, USA, ACM, 2011, 7--14, doi: 10.1145/2110205.2110208

Wei Zhuo, Prabhat, Chris Paciorek, Cari Kaufman, "Distributed Kriging Analysis for Large Spatial Data", ICDM 11, 2011,

Jerry Chou, Kesheng Wu, Prabhat, "FastQuery: A Parallel Indexing System for Scientific Data", CLUSTER 11, Washington, DC, USA, IEEE Computer Society, 2011, 455--464, doi: 10.1109/CLUSTER.2011.86

Jerry Chou, Kesheng Wu, Prabhat, "FastQuery: A general Index and Query system for scientific data", Scientific and Statistical Database Management Conference, 2011,

Richard Martin, Thomas Willems, Chris Rycroft, Prabhat, Michael Kazi, Maciek Haranczyk, "High Throughput structure analysis and descriptor generation for crystalline porous materialsi", International Conference on Chemical Structures, 2011,

Oliver Rübel, Sean Ahern, E. Wes Bethel, Mark D. Biggin, Hank Childs, Estelle Cormier-Michel, Angela DePace, Michael B. Eisen, Charless C. Fowlkes, Cameron G. R. Geddes, Hans Hagen, Bernd Hamann, Min-Yu Huang, Soile V. E. Keränen, David W. Knowles, Cris L. Luengo Hendriks, Jitendra Malik, Jeremy Meredith, Peter Messmer, Prabhat, Daniela Ushizima, Gunther H. Weber, Kesheng Wu, "Coupling Visualization and Data Analysis for Knowledge Discovery from Multi-Dimensional Scientific Data", Proceedings of International Conference on Computational Science, ICCS 2010, May 2010,


G. H. Weber, S. Ahern, E. W. Bethel, S. Borovikov, H. R. Childs, E. Deines, C. Garth, H. Hagen, B. Hamann, K. I. Joy, D. Martin, J. Meredith, Prabhat, D. Pugmire, O. Rübel, B. Van Straalen, and K. Wu, "Recent Advances in VisIt: AMR Streamlines and Query-Driven Visualization", Numerical Modeling of Space Plasma Flows: Astronum-2009 (Astronomical Society of the Pacific Conference Series), 2010, 429:329–334,

Mark Howison, Andreas Adelmann, E. Wes Bethel, Achim Gsell, Benedikt Oswald, Prabhat, "H5hut: A High-Performance I/O Library for Particle-Based Simulations", Proceedings of 2010 Workshop on Interfaces and Abstractions for Scientific Data Storage (IASDS10), Heraklion, Crete, Greece, January 1, 2010,

Oliver R\ ubel, Prabhat, Kesheng Wu, Hank Childs, Jeremy Meredith, Cameron G. R. Geddes, Estelle Cormier-Michel, Sean Ahern, Gunther H. weber, Peter Messmer, Hans Hagen, Bernd Hamann, E. Wes Bethel, "High Performance Multivariate Visual Data Exploration for Extemely Large Data", SuperComputing 2008 (SC08), Austin, Texas, USA, 2008,

Book Chapters

Hank Childs, David Pugmire, Sean Ahern, Brad Whitlock, Howison, Prabhat, Gunther H. Weber, E. Wes Bethel, "Visualization at Extreme-Scale Concurrency", High Performance Visualization: Enabling Extreme-Scale Scientific Insight, (CRC Press: 2012) Pages: 291--306

Oliver Rubel, Wes Bethel, Prabhat, Kesheng Wu, "Query Driven Visualization and Analysis", High Performance Visualization: Enabling Extreme-Scale Scientific Insight, (CRC Press: 2012)

Daniela Ushizima, Cameron Geddes, Estelle Cormier-Michel, E. Wes Bethel, Janet Jacobsen, Prabhat, Oliver Rübel, Gunther Weber, Bernard Hamann, Peter Messmer, and Hans Hagen, "Automated Detection and Analysis of Particle Beams in Laser-Plasma Accelerator Simulations", In-Tech, ( 2010) Pages: 367 - 389

Oliver R\ ubel, Cameron G. R. Geddes, Estelle Cormier-Michel Kesheng Wu, Prabhat, Gunther H. Weber, Daniela M. Ushizima, Peter Messmer, Hans Hagen, Bernd Hamann, Wes Bethel, "Automatic Beam Path Analysis of Laser Wakefield Particle Acceleration Data", IOP Computational Science \& Discovery, ( 2009)


Prabhat, Data and Analytics Strategy, February 23, 2015,

Prabhat, Pattern Detection for Large Climate Datasets, Climate 2013, 2013,

Prabhat, Data Formats, Data Models and Parallel I/O, CRD Division Review, 2013,

Prabhat, 13TB, 80,000 cores and TECA: The search for extreme events in climate datasets, American Geophysical Union Meeting, 2012,

Michael F. Wehner, Prabhat, Surendra Byna, Fuyu Li, Erin LeDell, Thomas Yopes, Gunther Weber, Wes Bethel, and William D. Collins, TECA, 13TB, 80,000 Processors: Or: Characterizing Extreme Weather in a Changing Climate, Second Workshop on Understanding Climate Change from Data, 2012,

Michael Wehner, Kevin Reed, Prabhat, Surendra Byna, William D. Collins, Fuyu Liand Travis O Brien, Julio Bacmeister, Andrew Gettelman, High Resolution CAM5.1 Simulations, 14th International Specialist Meeting on the Next Generation Models of Climate and Sustainability for Advanced High Performance Computing Facilities, 2012,

Wei-Chen Chen, George Ostrouchov, David Pugmire, Prabhat, Michael Wehner, Model Based Clustering Analysis of Large Climate Simulation Datasets, Joint Statistical Meeting, 2012,

Prabhat, Scientific Visualization 101, LBL Open House, 2011,

Prabhat, Pattern Detection and Extreme Value Analysis for Climate Data, American Geophysical Union Meeting, 2011,

Prabhat, Visualization and Analysis of Global Cloud Resolving Models, Geophysical Fluid Dynamics Lab, 2011,

Prabhat, Scientific Visualization, LBL Open House, 2010,

Prabhat, Visualization and Analysis of Climate data, LBL Earth Sciences Division Seminar, 2010,


E. Wes Bethel, David Camp, Hank Childs, Mark Howison, Hari Krishnan, Burlen Loring, Joerg Meyer, Prabhat, Oliver Ruebel, Daniela Ushizima, Gunther Weber, "Towards Exascale: High Performance Visualization and Analytics – Project Status Report. Technical Report", DOE Exascale Research Conference, April 1, 2012, LBNL 5767E,

Prabhat, Dmitry Zubarev, W.A. Lester, "Statistical Exploration of Electronic Structure of Molecules from Quantum Monte Carlo Simulations", 1969,

Jerry Chou, Kesheng Wu, Prabhat, "Design of FastQuery: how to generalize Indexing and Querying systems for scientific data", 1969,


Babak Behzad, Joseph Huchette, Huong Luu, Suren Byna, Yushu Yao, Prabhat, "A Framework for Auto-tuning HDF5 Applications", HPDC, 2013,

Prabhat, William D. Collins, Michael Wehner, "Extreme-Scale Climate Analytics", Google Regional PhD Summit, 2013,

Prabhat, William D. Collins, Michael Wehner, Suren Byna, Chris Paciorek, "Big Data Challenges in Climate Science", Berkeley Atmospheric Science Symposium, 2013,

Babak Behzad, Joseph Huchette, Huong Luu, Suren Byna, Yushu Yao, Prabhat, "Auto-Tuning of Parallel I/O Parameters for HDF5 Applications", SC, 2012,

Surendra Byna, Jerry Chou, Oliver R\ ubel, Prabhat, Homa Karimabadi, William S. Daughton, Vadim Roytershteyn, E. Wes Bethel, Mark Howison, Ke-Jou Hsu, Kuan-Wu Lin, Arie Shoshani, Andrew Uselton, Kesheng Wu, "Parallel Data, Analysis, and Visualization of a Trillion Particles", XLDB, 2012,

E. Wes Bethel, Rob Ross, Wei-Ken Liao, Prabhat, Karen Schuchardt, Peer-Timo Bremer, Oliver R\ ubel, Surendra Byna, Kesheng Wu, Fuyu Li, Michael Wehner, John Patchett, Han-Wei Shen, David Pugmire, Dean Williams, "Recent Advances in Visual Data Exploration and Analysis of Climate Data", SciDAC 3 Principal Investigator Meeting, 2012,

Oliver Ruebel, Cameron Geddes, Min Chen, Estelle Cormier, Ji Qiang, Rob Ryne, Jean-Luc Vey, David Grote, Jerry Chou, Kesheng Wu, Mark Howison, Prabhat, Brian Austin, Arie Shoshani, E. Wes Bethel, "Scalable Data Management, Analysis and Visualization of Particle Accelerator Simulation Data", SciDAC 3 Principal Investigator Meeting, 2012,

Prabhat, Suren Byna, Kesheng Wu, Jerry Chou, Mark Howison, Joey Huchette, Wes Bethel, Quincey Koziol, Mohammad Chaarawi, Ruth Aydt, Babak Behzad, Huong Luu, Karen Schuchardt, Bruce Palmer, "Updates from the ExaHDF5 project: Trillion particle run, Auto-Tuning and the Virtual Object Layer", DOE Exascale Research Conference, 2012,

E. Wes Bethel, David Camp, Hank Childs, Mark Howison, Hari Krishnan, Burlen Loring, J\ org Meyer, Prabhat, Oliver R\ ubel, Daniela Ushizima, Gunther Weber, "Towards Exascale: High Performance Visualization and Analytics -- Project Status Report", 2012,

Michael Wehner, Surendra Byna, Prabhat, Thomas Yopes, John Wu, "Atmospheric Rivers in the CMIP3/5 Historical and Projection Simulations", World Climate Research Programme (WCRP) Workshop on CMIP5 Model Analysis, 2012,

R. Ryne, B. Austin, J. Byrd, J. Corlett, E. Esarey, G. R. Geddes, W. Leemans, Prabhat X. Li, J. Qiang, R\ ubel, J.-L. Vay, M. Venturini, K. Wu, B. Carlsten, D. Higdon, N. Yampolsky, "High Performance Computing in Accelerator Science: Past Successes, Future Challenges", ASCR/BES Workshop on Data and Communications in Basic Energy Sciences: Creating a Pathway for Scientific Discovery, 2011,

Prabhat, Suren Byna, Chris Paciorek, Gunther Weber, Kesheng Wu, Thomas Yopes, Michael Wehner, William Collins, George Ostrouchov, Richard Strelitz, E. Wes Bethel, "Pattern Detection and Extreme Value Analysis on Large Climate Data", DOE/BER Climate and Earth System Modeling PI Meeting, 2011,

Chris Paciorek, Michael Wehner, Prabhat, "Computationally-efficient Spatial Analysis of Precipitation Extremes Using Local Likelihood", Statistical and Applied Mathematical Sciences Uncertainty Quantification program, Climate Modeling Opening Workshop, 2011,

Richard Martin, Prabhat, Maciek Haranczyk, James Sethian, "PDE-based analysis of void space of porous materials on multicore CPUs", Manycore and Accelerator-based High-performance Scientific Computing, 2011,

Tina Zhuo, Prabhat, Chris Paciorek, Cari Kaufman, "Distributed Likelihoods Computation for Large Spatial Data", SuperComputing, 2010,