# Berkeley Lab 2016 Alvarez Fellow: Matthew Zahr

October 15, 2016

As Berkeley Lab’s 2016 Alvarez Fellow, Matthew Zahr will be developing efficient, projection-based methods for solving optimization problems constrained by partial differential equations in the Computational Research Division (CRD) Math group.

“I am interested in further developing these methods to address some of the problems of interest at Berkeley Lab, such as those in combustion and material science,” says Zahr. “I’m also developing new methods for resolving shocks in compressible conservation laws, topological optimization and solving problems with multiple spatial scales.”

Before joining Berkeley Lab as an Alvarez Fellow, Zahr was a Department of Energy Computational Science Graduate Fellow (CSGF) pursuing his Ph.D. in Computational and Mathematical Engineering at Stanford University. Upon meeting Berkley Lab Mathematician Dan Martin at the annual CSGF meeting, Zahr decided to spend the summer after his first year of graduate school at the Lab.

That summer, he worked with Berkeley Lab’s Per-Olof Persson on high-order Discontinuous Galerkin (DG) Methods for Computational Fluid Dynamics (CFD). Over the next few years he continued to work with Persson and others in Berkeley Lab’s Mathematics Group, including Jon Wilkening, on projects that were a cross-over between his thesis research—efficient Partial Differential Equation (PDE) constrained optimization—and their main research directions—high-order DG methods and time-periodic solutions of PDE. As a CSGF fellow, he also took advantage of opportunities to collaborate with researchers at other DOE National Labs, like the Sandia National Labs in California and New Mexico, which allowed him to expand into the field of uncertainty quantification.

Before Stanford, Zahr was an undergraduate student at UC Berkeley pursuing a Bachelors degree in Civil and Environmental Engineering. The summer before graduation, he participated in the Army High Performance Computing Research Center’s (AHPCRC) Summer Institute where he worked on a computational mechanics research project with a professor and his graduate students. He enjoyed the experience so much that he spent his last year at UC Berkeley strengthening his math skills, and then decided to do his graduate work in the applied/computational math program at Stanford specifically to work with the professor from his AHPCRC program.

Originally from Modesto, California, Zahr likes to hike, lift weights, run and swim in his free time. In winter, he enjoys skiing and snow camping in Tahoe.

**About Computing Sciences at Berkeley Lab**

The

**Lawrence Berkeley National Laboratory**(Berkeley Lab)

**Computing Sciences**Area provides the computing and networking resources and expertise critical to advancing Department of Energy Office of Science (DOE-SC) research missions: developing new energy sources, improving energy efficiency, developing new materials, and increasing our understanding of ourselves, our world and our universe.

ESnet, the

**Energy Sciences Network**, provides the high-bandwidth, reliable connections that link scientists at 40 DOE research sites to each other and to experimental facilities and supercomputing centers around the country. The

**National Energy Research Scientific Computing Center**(NERSC) powers the discoveries of 7,000-plus scientists at national laboratories and universities, including those at Berkeley Lab's

**Computational Research**Division (CRD). NERSC and ESnet are both Department of Energy Office of Science National User Facilities. The Computational Research Division (CRD) conducts research and development in mathematical modeling and simulation, algorithm design, data storage, management and analysis, computer system architecture and high-performance software implementation. NERSC and ESnet are Department of Energy Office of Science User Facilities.

Berkeley Lab addresses the world's most urgent scientific challenges by advancing sustainable energy, protecting human health, creating new materials, and revealing the origin and fate of the universe. Founded in 1931, Berkeley Lab's scientific expertise has been recognized with 13 Nobel prizes. The University of California manages Berkeley Lab for the DOE’s Office of Science.

The **DOE Office of Science** is the United States' single largest supporter of basic research in the physical sciences and is working to address some of the most pressing challenges of our time. For more information, please visit science.energy.gov.