Andrew Myers

Computer Systems Engineer

I am a member of the Center for Computational Sciences and Engineering (CCSE) at the Lawrence Berkeley National Laboratory (LBNL). My current research focuses on the design and implementation of scalable parallel algorithms for conducting particle and particle-mesh simulations on current and upcoming supercomputing architectures, particularly in the context of adaptive mesh refinement. These algorithms have applications to the modelling of, for example, large-scale structure formation in cosmology, plasma acceleration in particle accelerators, and the solids phase in multi-phase flow problems.

More generally, I am interested in parallel algorithms for scientific computing (particularly for GPU platforms), particle methods, and the visualization and analysis of large simulation datasets.

Much of my work is open source and can be followed on my Github page.

You can read more about my current projects here.

Journal Articles

H. Klion, R. Jambunathan, M. E. Rowan, E. Yang, D. Willcox, J.-L. Vay, R. Lehe, A. Myers, A. Huebl, W. Zhang, "Particle-in-Cell Simulations of Relativistic Magnetic Reconnection with Advanced Maxwell Solver Algorithms", The Astrophysical Journal, July 13, 2023, 952,

Andrew Myers, Ann Almgren, Diana Almorim, John Bell, Luca Fedeli, Lixin Ge, Kevin Gott, David Grote, Mark Hogan, Axel Huebl, Revathi Jambunathan, Remi Lehe, Cho Ng, Michael Rowan, Olga Shapoval, Maxence Thevenet, Jean-Luc Vay, Henri Vincenti, Eloise Yang, Neil Zaim, Weiqun Zhang, Yin Zhao, Edoardo Zoni, "Porting WarpX to GPU-accelerated platforms", Parallel Computing, December 1, 2021,

Jean Sexton, Zarija Lukic, Ann Almgren, Chris Daley, Brian Friesen, Andrew Myers, and Weiqun Zhang, "Nyx: A Massively Parallel AMR Code for Computational Cosmology", The Journal Of Open Source Software, July 10, 2021,

Weiqun Zhang, Andrew Myers, Kevin Gott, Ann Almgren and John Bell, "AMReX: Block-Structured Adaptive Mesh Refinement for Multiphysics Applications", The International Journal of High Performance Computing Applications, June 12, 2021,

L. Fedeli, A. Sainte-Marie, N. Zaim, M. Thevenet, J. L. Vay, A. Myers, F. Quere, and H. Vincenti, "Probing strong-field QED with Doppler-boosted petawatt-class lasers", Physical Review Letters, May 10, 2021,

Sherwood Richers, Don E. Willcox, Nicole M. Ford, and Andrew Myers, "Particle-in-cell simulation of the neutrino fast flavor instabilit", Physical Review D, April 20, 2021,

Jordan Musser, Ann S Almgren, William D Fullmer, Oscar Antepara, John B Bell, Johannes Blaschke, Kevin Gott, Andrew Myers, Roberto Porcu, Deepak Rangarajan, Michele Rosso, Weiqun Zhang, and Madhava Syamlal, "MFIX:Exa: A Path Towards Exascale CFD-DEM Simulations", The International Journal of High Performance Computing Applications, April 16, 2021,

J-L Vay, Ann Almgren, LD Amorim, John Bell, L Fedeli, L Ge, K Gott, DP Grote, M Hogan, A Huebl, R Jambunathan, R Lehe, A Myers, C Ng, M Rowan, O Shapoval, M Thevenet, H Vincenti, E Yang, N Zaim, W Zhang, Y Zhao and E Zoni, "Modeling of a chain of three plasma accelerator stages with the WarpX electromagnetic PIC code on GPUs", Physics of Plasmas, February 9, 2021,

Y. Zhao, R. Lehe, A. Myers, M. Thevenet, A. Huebl, C. B. Schroeder, and J.-L. Vay, "Modeling of emittance growth due to Coulomb collisions in plasma-based accelerators", Physics of Plasmas, November 17, 2020,

Weiqun Zhang, Ann Almgren, Vince Beckner, John Bell, Johannes Blashke, Cy Chan, Marcus Day, Brian Friesen, Kevin Gott, Daniel Graves, Max P. Katz, Andrew Myers, Tan Nguyen, Andrew Nonaka, Michele Rosso, Samuel Williams, Michael Zingale, "AMReX: a framework for block-structured adaptive mesh refinement", Journal of Open Source Software, May 2019, doi: 10.21105/joss.01370

JL Vay, A Almgren, J Bell, L Ge, DP Grote, M Hogan, O Kononenko, R Lehe, A Myers, C Ng, J Park, R Ryne, O Shapoval, M Thévenet, W Zhang, "Warp-X: A new exascale computing platform for beam–plasma simulations", Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, 2018, 909:476--479, doi: 10.1016/j.nima.2018.01.035

Mark R. Krumholz, Andrew T. Myers, Richard I. Klein, Christopher F. McKee,, "What Physics Determines the Peak of the IMF? Insights from the Structure of Cores in Radiation-Magnetohydrodynamic Simulations", accepted by MNRAS, May 19, 2016,

Andrew Myers, Phillip Colella, Brian Van Straalen, "A 4th-Order Particle-in-Cell Method with Phase-Space Remapping for the Vlasov-Poisson Equation", submitted to SISC, February 1, 2016,

Andrew Myers, Phillip Colella, Brian Van Straalen, "The Convergence of Particle-in-Cell Schemes for Cosmological Dark Matter Simulations", The Astrophysical Journal, Volume 816, Issue 2, article id. 56, 2016,

Andrew Myers, Christopher McKee, Pak Shing Li, "The CH+ abundance in turbulent, diffuse molecular clouds", Monthly Notices of the Royal Astronomical Society, Volume 453, Issue 3, p.2747-2758, November 1, 2015,

Andrew Myers, Richard Klein, Mark Krumholz, Christopher McKee, "Star cluster formation in turbulent, magnetized dense clumps with radiative and outflow feedback", Monthly Notices of the Royal Astronomical Society, Volume 439, Issue 4, p.3420-3438, April 1, 2014,

Andrew Myers, Christopher McKee, Andrew Cunningham, Richard Klein, Mark Krumholz, "The Fragmentation of Magnetized, Massive Star-forming Cores with Radiative Feedback", The Astrophysical Journal, Volume 766, Issue 2, article id. 97, April 1, 2013,

Pak Shing Li, Andrew Myers, Christopher McKee, "Ambipolar Diffusion Heating in Turbulent Systems", The Astrophysical Journal, Volume 760, Issue 1, article id. 33, November 1, 2012,

Andrew Myers, Mark Krumholz, Richard Klein, Christopher McKee, "Metallicity and the Universality of the Initial Mass Function", The Astrophysical Journal, Volume 735, Issue 1, article id. 49, 2011,

Conference Papers

B Loring, A Myers, D Camp, EW Bethel, "Python-based in situ analysis and visualization", Proceedings of the Workshop on In Situ Infrastructures for Enabling Extreme-Scale Analysis and Visualization - ISAV 18, ACM Press, 2018, doi: 10.1145/3281464.3281465

Posters

Revathi Jambunathan, Andrew Myers, Donald Willcox, Jean-Luc Vay, Ann Almgren, Diana Amorim, John Bell, Kevin Gott, Axel Huebl, Remi Lehe, Micahel Rowan, Olga Shapoval, Maxence Thevenet, Weiqun Zhang, "WarpX: Towards exascale modeling of pulsar magnetospheres", Connecting Micro and Macro Scales: Acceleration, Reconnection, and Dissipation in Astrophysical Plasmas, September 9, 2019,