Careers | Phone Book | A - Z Index

Hank Childs

hankchilds.png
Hank Childs
Staff Scientist
Phone: +1 510 486 4154

Biographical Information
Hank Childs is a Computer Systems Engineer in the Visualization Group. He received his Ph.D. in computer science from the University of California at Davis in 2006. Hank's research focuses on scientific visualization, high performance computing, and the intersection of the two. In July of 2012, Hank received the Department of Energy Early Career Award to research visualization with exascale computers (i.e., computers that can do 10^18 floating operations per second).  Outside of his research, Hank is best known as the architect of the VisIt project, a visualization application for very large data that is used around the world.  Hank also holds a dual role as an assistant professor at the University of Oregon. Students interested in pursuing a PhD at UO with Hank should look at his UO website.

Research Interests
Hank's research focuses on visualizing very large data. Recent research results have explored using hybrid parallelism techniques (i.e. combining shared- and distributed-memory techniques) on scientific visualization algorithms, techniques for simplifying very large data sets so they can be more readily understood, and designing visualization algorithms that can scale to tens of thousands of CPUs and beyond.

Journal Articles

Hank Childs, Berk Geveci, William J. Schroeder, Jeremy S. Meredith, Kenneth Moreland, Christopher Sewell, Torsten Kuhlen, E.Wes Bethel, "Research Challenges for Visualization Software", IEEE Computer, May 1, 2013, 46:34-43, LBNL 6239E,

Tamay M. Ozgokmen, Andrew C. Poje, Paul F. Fischer, Hank Childs, Harinarayan Krishnan, Christoph Garth, Angelique C. Haza, Edward Ryan, "On multi-scale dispersion under the influence of surface mixed layer instabilities", Ocean Modelling, October 2012, 56:16-30,

Kelly P. Gaither, Hank Childs, Karl Schulz, Cyrus Harrison, Bill Barth, Diego Donzis, P.K. Yeung, "Using Visualization and Data Analysis to Understand Critical Structures in Massive Time Varying Turbulent Flow Simulations", IEEE Computer Graphics and Applications, July 2012, 32:34-45, LBNL 5911E,

Mark Howison, E. Wes Bethel, Hank Childs, "Hybrid Parallelism for Volume Rendering on Large, Multi- and Many-core Systems", IEEE Transactions on Visualization and Computer Graphics, January 2012, 18:17-29, LBNL 4370E,

David Camp, Christoph Garth, Hank Childs, Dave Pugmire, Kenneth I. Joy, "Streamline Integration Using MPI-Hybrid Parallelism on a Large Multicore Architecture", IEEE Transactions on Visualization and Computer Graphics, November 2011, 17:1702-1713, LBNL 4563E, doi: http://doi.ieeecomputersociety.org/10.1109/TVCG.2010.259

E. Wes Bethel, John van Rosendale, Dale Southard, Kelly Gaither, Hank Childs, Eric Brugger, Sean Ahern, "Visualization at Supercomputing Centers: The Tale of Little Big Iron and the Three Skinny Guys", IEEE Computer Graphics and Applications, January 2011, 31:90-95, LBNL 4180E,

J. Meredith and H. Childs, "Visualization and Analysis-Oriented Reconstruction of Material Interfaces", Computer Graphics Forum (Proceedings of Eurographics/IEEE-VGTC Symposium on Visualization 2010 (EuroVis 2010)), June 2010, 1241-1250, LBNL 4567E,

Martin Isenburg, Peter Lindstrom, and Hank Childs, "Parallel and Streaming Generation of Ghost Data for Structured Grids", IEEE Computer Graphics and Applications, May 2010, 30:32-44, doi: 10.1109/MCG.2010.26

Hank Childs, David Pugmire, Sean Ahern, Brad Whitlock, Mark Howison, Prabhat, Gunther Weber, E. Wes Bethel, "Extreme Scaling of Production Visualization Software on Diverse Architectures", IEEE Computer Graphics and Applications, January 2010, 30:22--31, LBNL 3403E,

Conference Papers

David Camp, Hari Krishnan, David Pugmire, Christoph Garth, Ian Johnson, E. Wes Bethel, Kenneth I. Joy, and Hank Childs., "GPU Acceleration of Particle Advection Workloads in a Parallel, Distributed Memory Setting", Proceedings of Eurographics Symposium on Parallel Graphics and Visualization (EGPGV), May 5, 2013,

Cyrus Harrison, Paul Navratil, Maysam Mossalem, Ming Jiang, Hank Childs, "Efficient Dynamic Derived Field Generation on Many-Core Architectures Using Python", Workshop on Python for High Performance and Scientific Computing (PyHPC 2012), held in conjunction with the ACM/IEEE Conference on SuperComputing (SC12), November 2012, 11-20,

Gunther H. Weber, Hank Childs, Jeremy S. Meredith, "Efficient Parallel Extraction of Crack-free Isosurfaces from Adaptive Mesh Refinement (AMR) Data", Proceedings of IEEE Symposium on Large Data Analysis and Visualization (LDAV), October 2012, 31--38, LBNL 5799E,

Paul Navratil, Bill Barth, Hank Childs, "Virtual Rheoscopic Fluids for Dense, Large-Scale Fluid Flow Visualizations", Proceedings of IEEE Symposium on Large Data Analysis and Visualization (LDAV), October 2012, 79--84,

David Camp, Hank Childs, Christoph Garth, David Pugmire, Kenneth I. Joy, "Parallel Stream Surface Computation for Large Data Sets", Proceedings of IEEE Symposium on Large Data Analysis and Visualization (LDAV), October 2012, 39--47, LBNL 5776E,

Paul Navratil, Donald Fussell, Calvin Lin, Hank Childs, "Dynamic Scheduling for Large-Scale Distributed-Memory Ray Tracing", Proceedings of EuroGraphics Symposium on Parallel Graphics and Visualization (EGPGV), May 2012, 61-70, LBNL 5930E,

Allen R. Sanderson, Brad Whitlock, Oliver, Hank Childs, Gunther H. Weber, , Kesheng Wu, "A System for Query Based Analysis and Visualization", Third International Eurovis Workshop on Visual EuroVA 2012, Vienna, Austria, January 2012, LBNL 5507E,

David Camp, Hank Childs, Amit Chourasia, Christoph Garth, Kenneth Joy, "Evaluating the Benefits of An Extended Memory Hierarchy for Parallel Streamline Algorithms", Proceedings IEEE Symposium on Large-Scale Data Analysis and Visualization (LDAV) 2011, Providence, RI, USA, IEEE Press, October 2011, 57-64, LBNL 5503E,

C. Harrison, H. Childs, and K. P. Gaither, "Data-Parallel Mesh Connected Components Labeling and Analysis", Proceedings of EuroGraphics Symposium on Parallel Graphics and Visualization, April 2011, 131-140, LBNL 5944E, doi: 10.2312/EGPGV/EGPGV11/131-140

H. Childs, S. Ahern, J. Meredith, M. Miller, and K. I. Joy, "Comparative Visualization Using Cross-Mesh Field Evaluations and Derived Quantities", Scientific Visualization: Interactions, Features, Metaphors, Dagstuhl, Germany, Dagstuhl Follow-Ups, January 2011, 2:59-72, LBNL 5943E, doi: 10.4230/DFU.Vol2.SciViz.2011.59

M. Howison, E. W. Bethel, and H. Childs, "Hybrid Parallelism for Volume Rendering on Large, Multi-core Systems", Journal of Physics: Conference Series, Proceedings of SciDAC 2010, Chattanooga, TN, USA, July 2010, LBNL 4024E,

M. Howison, E. W. Bethel, and H. Childs, "Hybrid Parallelism for Volume Rendering on Large, Multi-core Systems", Proceedings of Astronum 2010, San Diego, CA, USA, June 2010, LBNL 4024E,

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, and Kesheng Wu, "Coupling Visualization and Data Analysis for Knowledge Discovery from Multi-dimensional Scientific Data", Procedia Computer Science, Proceedings of International Conference on Computational Science, ICCS 2010, June 2010, LBNL 3669E,

T.Fogal, H. Childs, S. Shankar, J. Kruger, R.D. Bergeron, and P. Hatcher, "Large Data Visualization on Distributed Memory Multi-GPU Clusters", High Performance Graphics 2010, June 2010, 57-66, LBNL 4571E,

Mark Howison, E. Wes Bethel, Hank Childs, "MPI-hybrid Parallelism for Volume Rendering on Large, Multi-core Systems", In Proceedings of the Eurographics Symposium on Parallel Graphics and Visualization (EGPGV), Norköping, Sweden, May 2010, LBNL 3297E,

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, 3185E, 2010, 429:329-334,

D. Pugmire, H. Childs, C. Garth, S. Ahern, G.H. Weber, "Scalable computation of streamlines on very large datasets", Proc. Supercomputing, Portland, OR, USA, November 2009, LBNL 3264E,

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. Kruger, J. Meredith, P. Messmer, G. Ostrouchov, V. Pascucci, K. Potter, Prabhat, D. Pugmire, O. Rubel, A. Sanderson, C. Silva, D. Ushizima, G. Weber, B. Whitlock, K. Wu, "Occam's Razor and Petascale Visual Data Analysis", SciDAC 2009, J. of Physics: Conference Series, San Diego, California, July 2009, LBNL 2210E,

E. Wes Bethel, Oliver Rübel, Prabhat, Kesheng Wu, Gunther H. Weber, Valerio Pascucci, Hank Childs, Ajith Mascarenhas, Jeremy Meredith, and Sean Ahern, "Modern Scientific Visualization is More than Just Pretty Pictures", Numerical Modeling of Space Plasma Flows: Astronum-2008 (Astronomical Society of the Pacific Conference Series, St. Thomas, USVI, June 2009, 301-317, LBNL 1450E,

K Wu et al., "FastBit: Interactively Searching Massive Data", SciDAC 2009, 2009, LBNL 2164E, doi: 10.1088/1742-6596/180/1/012053

O. Rübel, Prabhat, K. Wu, H. Childs, J. Meredith, C.G.R. Geddes, E. Cormier-Michel, S. Ahern, G.H. Weber, P. Messmer, H. Hagen, B. Hamann and E.W. Bethel, "High Performance Multivariate Visual Data Exploration for Extemely Large Data", Supercomputing (SC), Austin, Texas, USA, November 2008, LBNL 716E,

G.H. Weber, V. Beckner, H. Childs, T. Ligocki, M. Miller, B. van Straalen, E.W. Bethel, "Visualization of Scalar Adaptive Mesh Refinement Data", Numerical Modeling of Space Plasma Flows: Astronum-2007 (Astronomical Society of the Pacific Conference Series), April 2008, 385:309-320, LBNL 220E,

Books

E. Wes Bethel, Hank Childs, Charles Hansen (editors), High Performance Visualization---Enabling Extreme-Scale Scientific Insight, Chapman & Hall, CRC Computational Science, (CRC Press/Francis--Taylor Group: October 2012)

Hank Childs, Torsten Kuhlen, Fabio Marton (editors), Proceedings of the EuroGraphics Symposium on Parallel Graphics and Visualization (EGPGV), EuroGraphics Association, (EuroGraphics Association: May 2012)

Book Chapters

Hank Childs, Eric Brugger, Brad Whitlock, Jeremy Meredith, Sean Ahern, David Pugmire, Kathleen Biagas, Mark Miller, Cyrus Harrison, Gunther H. Weber, Hari Krishnan, Thomas Fogal, Allen Sanderson, Christoph Garth, E. Wes Bethel, David Camp, Oliver Rubel, Marc Durant, Jean M. Favre, Paul Navratil, "VisIt: An End-User Tool For Visualizing and Analyzing Very Large Data", High Performance Visualization---Enabling Extreme-Scale Scientific Insight, ( October 2012) Pages: 357--372

Hank Childs, "Parallel Visualization Frameworks", High Performance Visualization---Enabling Extreme-Scale Scientific Insight, ( October 2012) Pages: 9--24

Hank Childs, Kwan-Liu Ma, Hongfeng Yu, Brad Whitlock, Jeremy Meredith, Jean Favre, Scott Klasky, Norbert Podhorszki, Karsten Schwan, Matthew Wolf, Manish Parashar, Fan Zhang, "In Situ Processing", High Performance Visualization---Enabling Extreme-Scale Scientific Insight, ( October 2012) Pages: 171--198

E. Wes Bethel, David Camp, Hank Childs, Christoph Garth, Mark Howison, Kenneth I. Joy, David Pugmire, "Hybrid Parallelism", High Performance Visualization---Enabling Extreme-Scale Scientific Insight, ( October 2012) Pages: 261--290

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

E. Wes Bethel, Hank Childs, Ajith Mascarenhas, Valerio Pascucci, and Prabhat, "Scientific Data Management Challenges in High Performance Visual Data Analysis", Scientific Data Management: Challenges, Existing Technology, and Deployment, edited by Arie Shoshani and Doron Rotem, (Chapman & Hall CRC Press: December 2009) LBNL 1449E,

Reports

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 2012,

Web Articles

"Smashing the Trillion Zone Barrier", H. Childs, Scientific Computing, 2009,

Posters

O. Rübel, Prabhat, K. Wu, H. Childs, J. Meredith, C.G.R. Geddes, E. Cormier-Michel, S. Ahern, G.H. Weber, P. Messmer, H. Hagen, B. Hamann and E.W. Bethel, "Application of High-performance Visual Analysis Methods to Laser Wakefield Particle Acceleration Data", IEEE Visualization 2008, October 2008,

Others

C. Garth, E. Deines, K. Joy, E. W. Bethel, H. Childs, G. Weber, S. Ahern, D. Pugmire, A. Sanderson, C. Johnson, Twists and Turns: Vector Field Visual Data Analysis for Petascale Computational Science, SciDAC Review, Pages: 10-21, 2009,

E. Wes Bethel, Chris Johnson, Charles Hansen, Claudio Silva, Steven Parker, Allen Sanderson, Lee Myers, Martin Cole, Xavier Tricoche, Sean Ahern, George Ostrouchov, Dave Pugmire, Jamison Daniel, Jeremy Meredith, Valerio Pascucci, Hank Childs, Peer-Timo Bremer, Ajith Mascarenhas, Ken Joy, Bernd Hamann, Christoph Garth, Cecilia Aragon, Gunther Weber, and Prabhat, Seeing the Unseeable, SciDAC Review, Pages: 24-33, 2008,