NERSCPowering Scientific Discovery Since 1974

Rebecca Hartman-Baker

head shot
Rebecca J. Hartman-Baker Ph.D.
Acting Group Leader
Phone: (510) 486-4810
Fax: (510) 486-6459
User Engagement Group
1 Cyclotron Road
Mail Stop 59R4010A
Berkeley, CA 94720 US


Biographical Sketch

Rebecca Hartman-Baker, the acting group leader, is a computational scientist with expertise in the development of scalable parallel algorithms for the petascale and beyond. Her other research interests include inverse and ill-posed problems, numerical optimization methods, and developing effective techniques for training users of HPC resources. She joined NERSC from iVEC in Australia, where she coached two teams to the Student Cluster Competition at the annual Supercomputing conference, led the HPC training program for a time, and was in charge of the decision-making process for determining the architecture of the petascale supercomputer at the Pawsey Supercomputing Centre

She began her career at Oak Ridge National Laboratory, where for her work on the initial implementation of load balancing in MADNESS as a postdoc she was on the R&D100-award winning team. As a scientific computing liaison in the Oak Ridge Leadership Computing Facility, she worked with a wide variety of scientific fields, including chemistry, nuclear physics, and logistics, and led the liaison task in the scientific computing group.

Rebecca earned a PhD in computer science, with a certificate in computational science and engineering, from the University of Illinois at Urbana-Champaign.


Journal Articles

Robert J. Harrison, Gregory Beylkin, Florian A. Bischoff, Justus A. Calvin, George I. Fann, Jacob Fosso-Tande, Diego Galindo, Jeff R. Hammond, Rebecca Hartman-Baker, Judith C. Hill, Jun Jia, Jakob S. Kottmann, M-J. Yvonne Ou, Laura E. Ratcliff, Matthew G. Reuter, Adam C. Richie-Halford, Nichols A. Romero, Hideo Sekino, William A. Shelton, Bryan E. Sundahl, W. Scott Thornton, Edward F. Valeev, Álvaro Vázquez-Mayagoitia, Nicholas Vence, Yukina Yokoi, "MADNESS: A Multiresolution, Adaptive Numerical Environment for Scientific Simulation", SIAM Journal on Scientific Computing, October 27, 2016, 38:S123-S142,

Rebecca J. Hartman-Baker, Daniel J. Grimwood, Valerie Maxville, "Evaluating Parallel Programming Tools to Support Code Development for Accelerators", Procedia Computer Science, 2014, 2076-2079,

Rebecca J. Hartman-Baker, Hai Ah Nam, "Optimizing Nuclear Physics Codes on the XT5", Proceedings of CUG 2011, 2011,

Conference Papers

Mario Melara, Todd Gamblin, Gregory Becker, Robert French, Matt Belhorn, Kelly Thompson, Peter Scheibel, Rebecca Hartman-Baker, "Using Spack to Manage Software on Cray Supercomputers", Cray User Group 2017, 2017,


Rebecca Hartman-Baker, NERSC Overview, NERSC New User Training, February 23, 2017,

Rebecca Hartman-Baker, Accounts and Allocations, NERSC New User Training, February 23, 2017,

Rebecca Hartman-Baker, Craypat and Reveal, NERSC New User Training, February 23, 2017,

Rebecca J. Hartman-Baker, Past, Present, and Future Parallel Programming Paradigms, March 24, 2016,