NERSCPowering Scientific Discovery Since 1974

Paul Lin

Paul Lin
Application Performance Specialist
1 Cyclotron Road
Mailstop: 59R4010A
Berkeley, CA 94720 US

Paul is a member of the Application Performance Group.  Prior to joining NERSC, he was at Sandia National Laboratories.  Paul has a background in computational fluid dynamics and sparse iterative linear solvers (preconditioners and multigrid methods).  He earned a Ph.D. in Mechanical and Aerospace Engineering from Princeton University.



Journal Articles

Paul T. Lin, John N. Shadid, Paul H. Tsuji, "On the performance of Krylov smoothing for fully coupled AMG preconditioners for VMS resistive MHD", International Journal for Numerical Methods in Engineering, December 21, 2019, 120:1297-1309, doi: 10.1002/nme.6178

Paul T. Lin, John N. Shadid, Jonathan J. Hu, Roger P. Pawlowki, Eric C. Cyr, "Performance of fully-coupled algebraic multigrid preconditioners for large-scale VMS resistive MHD", Journal of Computational and Applied Mathematics, December 15, 2018, 344:782-793, doi: 10.1016/

Paul T. Lin, Michael A. Heroux, Richard F. Barrett, Alan B. Williams, "Assessing a mini-application as a performance proxy for a finite element method engineering application", Concurrency and Computation: Practice and Experience, July 30, 2015, 27:5374–5389, doi: 10.1002/cpe.3587

Richard F. Barrett, Paul S. Crozier, Douglas W. Doerfler, Michael A. Heroux, Paul T. Lin, Heidi K. Thornquist, Timothy G. Trucano, Courtenay T. Vaughan, "Assessing the role of mini-applications in predicting key performance characteristics of scientific and engineering applications", Journal of Parallel and Distributed Computing, January 1, 2015, 75:107-122, doi: 10.1016/j.jpdc.2014.09.006

Paul Lin, Matthew Bettencourt, Stefan Domino, Travis Fisher, Mark Hoemmen, Jonathan Hu, Eric Phipps, Andrey Prokopenko, Siva Rajamanickam, Christopher Siefert, Stephen Kennon, "Towards extreme-scale simulations for low Mach fluids with second-generation Trilinos", Parallel Processing Letters, January 1, 2014, 24:1-20, doi: 10.1142/S0129626414420055

S.S. Dosanjh, R.F. Barrett, D.W. Doerfler, S.D. Hammond, K.S. Hemmert, M.A. Heroux, P.T. Lin, K.T. Pedretti, A.F. Rodrigues, T.G. Trucano, J.P. Juitjens, "Exascale Design Space Exploration and Co-Design", Future Generation Computer Systems, Volume 30, Pages 46-58, January 2014,

Paul T. Lin, "Improving multigrid performance for unstructured mesh drift-diffusion simulations on 147,000 cores", International Journal for Numerical Methods in Engineering, May 30, 2012, 91:971-989, doi: 10.1002/nme.4315

Paul T. Lin, John N. Shadid, "Towards large-scale multi-socket, multicore parallel simulations: Performance of an MPI-only semiconductor device simulator", Journal of Computational Physics, September 20, 2010, 229:6804-6818, doi: 10.1016/

Paul T. Lin, John N. Shadid, Raymond S. Tuminaro, Marzio Sala, Gary L. Hennigan, Roger P. Pawlowski, "A parallel fully coupled algebraic multilevel preconditioner applied to multiphysics PDE applications: drift-diffusion, flow/transport/reaction, resistive MHD", International Journal for Numerical Methods in Fluids, September 3, 2010, 64:1148-1179, doi: 10.1002/fld.2402

J. Tomkins, R. Brightwell, W. Camp, S. Dosanjh, S. Kelly, P. Lin, C. Vaughan, J. Levesque, V. Tipparaju, "The Red Storm Architecture and Early Experiences with Multi-Core Processors", International Journal of Distributed Systems and Technologies, Vol. 1, Issue 2, pp. 74-93, April 19, 2010, doi: 10.4018/jdst.2010040105

Paul T. Lin, John N. Shadid, Marzio Sala, Raymond S. Tuminaro, Gary L. Hennigan, Robert J. Hoekstra, "Performance of a parallel algebraic multilevel preconditioner for stabilized finite element semiconductor device modeling", Journal of Computational Physics, September 20, 2009, 228:6250-6267, doi: 10.1016/

Paul T. Lin, Marzio Sala, John N. Shadid, Raymond S. Tuminaro, "Performance of fully coupled algebraic multilevel domain decomposition preconditioners for incompressible flow and transport", International Journal for Numerical Methods in Engineering, July 9, 2006, 67:208-225, doi: 10.1002/nme.1624

Paul T. Lin, Timothy J. Baker, Luigi Martinelli, Antony Jameson, "Two-dimensional implicit time-dependent calculations on adaptive unstructured meshes with time evolving boundaries", International Journal for Numerical Methods in Fluids, January 20, 2006, 50:199-218, doi: 10.1002/fld.1050

Conference Papers

Mahesh Rajan, Douglas W. Doerfler, Paul T. Lin, Simon D. Hammond, Richard F. Barrett, Courtney T. Vaughan, "Unprecedented Scalability and Performance of the New NNSA Tri-Lab Linux Capacity Cluster 2", Performance Modeling, Benchmarking and Simulation of High Performance Computer Systems (PMBS12), November 2012,

Book Chapters

Paul T. Lin, John N. Shadid, Paul H. Tsuji, "Krylov Smoothing for Fully-Coupled AMG Preconditioners for VMS Resistive MHD", Numerical Methods for Flows, Lecture Notes in Computational Science and Engineering, Volume 132, ( February 23, 2020)


Richard Barrett, Paul Crozier, Doug Doerfler, Simon Hammond, Mike Heroux, Paul Lin, Tim Trucano, Courtenay Vaughan, Alan Williams, "Assessing the Predictive Capabilities of Mini-applications", The International Conference for High Performance Computing, Networking, Storage, and Analysis (SC12), November 2012,


Michael A. Heroux, Richard Frederick Barrett, James Michael Willenbring, Daniel W Barnette, David Beckingsale, James F Belak, Mike Boulton, Paul Crozier, Douglas W. Doerfler, Harold C. Edwards, Wayne Gaudin, Timothy C Germann, Simon David Hammond, Andy Herdman, Stephen Jarvis, Paul Lin, Justin Luitjens, Andrew Mallinson, Simon McIntosh-Smith, Susan M Mniszewski, Jamaludin Mohd-Yusof, David F Richards, Christopher Sewell, Sriram Swaminarayan, Heidi K. Thornquist, Christian Robert Trott, Courtenay T. Vaughan, Alan B. Williams, R&D 100 Award, Mantevo Suite 1.0, R&D Magazine, August 2013,