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Terry Ligocki

Terry J. Ligocki (Full-time)
Phone: +1 510 486 6140
Fax: +1 510 486 6900

Terry has been a core developer of the Chombo library for numerically solving PDE using adaptive mesh refinement techniques since he joined the Applied Numerical Algorithms Group, ANAG, at LBNL in 2001.  He has focused on the embedded boundary aspects of the Chombo library.  Specifically, embedded boundary generation from implicitly defined volumes created using constructive solid geometry.  His research interests include computational geometry, finite volume numerical algorithms, and transforming complex algorithms for large scale computing.  He was a member of APDEC for SciDAC and SciDAC 2 and is currently a member of FASTMath for SciDAC 3.


  • ICIAM 2003 (July 8, 2003) - Cartesian Grid Embedded Boundary Methods for Solving Applied PDEs (PDF)
  • IPAM Talk (March 28, 2005) - Hyperbolic Conservation Laws and Visualization and Data Analysis In Chombo (PDF)
  • IPDPS 2009 (May 28, 2009) - Scalability Challenges for Massively Parallel AMR Applications (PDF)

Mathematical Musings

Journal Articles

Schwartz, P., Barad, M., Colella, P., Ligocki, T.J., "A Cartesian Grid Embedded Boundary Method for the Heat Equation and Poisson's Equation in Three Dimensions", Journal of Computational Physics. Vol. 211 (2006), pp. 531-550., 2006, LBNL 56607,

Conference Papers

Yu Jung Lo, Samuel Williams, Brian Van Straalen, Terry J. Ligocki, Matthew J. Cordery, Leonid Oliker, Mary W. Hall, "Roofline Model Toolkit: A Practical Tool for Architectural and Program Analysis", Performance Modeling, Benchmarking and Simulation of High Performance Computer Systems (PMBS), November 2014,

Gunther H. Weber, Hans Johansen, Daniel T. Graves, Terry J. Ligocki, "Simulating Urban Environments for Energy Analysis", Proceedings Visualization in Environmental Sciences (EnvirVis), 2014, LBNL LBNL-6652E,

C. Shen, D. Trebotich, S. Molins, D. T. Graves, B. Van Straalen, T. Ligocki and C. I. Steefel, "High Performance Computations of Subsurface Reactive Transport Processes at the Pore Scale", Journal of Physics: Conference Series, Proceedings of SciDAC 2011, 2011,

E. Ateljevich, P. Colella, D.T. Graves, T.J. Ligocki, J. Percelay, P.O. Schwartz, Q. Shu, "CFD Modeling in the San Francisco Bay and Delta", 2009 Proceedings of the Fourth SIAM Conference on Mathematics for Industry (MI09), pp. 99-107, 2010,

B.V. Straalen, J. Shalf, T. Ligocki, N. Keen, and W. Yang, "Scalability Challenges for Massively Parallel AMR Application", 23rd IEEE International Symposium on Parallel and Distributed Processing, 2009., 2009,

Brian van Straalen, Shalf, J. Ligocki, Keen, Woo-Sun Yang, "Scalability challenges for massively parallel AMR applications", IPDPS, 2009, 1-12,

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,

P. Colella, D. Graves, T. Ligocki, D. Trebotich and B.V. Straalen, "Embedded Boundary Algorithms and Software for Partial Differential Equations", 2008 J. Phys.: Conf. Ser. 125 012084, 2008,

T.J. Ligocki, P.O. Schwartz, J. Percelay, P. Colella, "Embedded Boundary Grid Generation using the Divergence Theorem, Implicit Functions, and Constructive Solid Geometry", 2008 J. Phys.: Conf. Ser. 125 012080, 2008,

Phillip Colella, John Bell, Noel Keen, Terry Ligocki, Michael Lijewski, Brian van Straalen, "Performance and Scaling of Locally-Structured Grid Methods for Partial Differential Equations", presented at SciDAC 2007 Annual Meeting, 2007,


M. Christen, N. Keen, T. Ligocki, L. Oliker, J. Shalf, B. van Straalen, S. Williams, "Automatic Thread-Level Parallelization in the Chombo AMR Library", LBNL Technical Report, 2011, LBNL 5109E,