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Scalable Solvers Group

Lisa Claus

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Lisa Claus
Postdoctoral Scholar
Applied Mathematics and Computational Research Division
Lawrence Berkeley National Laboratory
1 Cyclotron Road
MS 50A-3111
Berkeley, CA 94720 US


  • Postdoctoral ScholarComputational Research Division, Berkeley Lab, January 2020 - present.
  • Graduate Research Assistant, Department of High Performance Computing, University of Wuppertal, Germany, September 2017 - July 2019.
  • Computation Intern, Lawrence Livermore National Laboratory, US, April 2018 - July 2018
  • Computation Intern, Lawrence Livermore National Laboratory, US, June 2017 - September 2017
  • Graduate Research Assistant, Department of Numerical Mathematics, University of Kassel, Germany, January 2016 - June 2017.

Research Interests

  • Numerical Mathematics
  • High Performance Computing
  • Multigrid Methods
  • Sparse and Dense Direct Solvers


  • Doctor of Natural Sciences (Dr. rer. nat.): Numerical Mathematics
    2016-2019, University of Wuppertal, Germany
  • Master of Science (MS): Applied Mathematics
    2014-2015, University of Wuppertal, Germany
  • Bachelor of Science (BS): Applied Mathematics
    2011-2014, University of Wuppertal, Germany

Journal Articles

Yang Liu, Pieter Ghysels, Lisa Claus, Xiaoye Sherry Li, "Sparse Approximate Multifrontal Factorization with Butterfly Compression for High Frequency Wave Equations", SIAM J. Sci. Comput., June 22, 2021,