Steve Plimpton

I retired in October 2022 from Sandia National Laboratories, a US Department of Energy lab, where I worked as a computational scientist in its Center for Computing Research.

I'm still involved in some technical work, particularly for the open source codes listed below.
You can reach me with a question or idea at this email address --- sjplimp at --- though I may not respond immediately.

My research at Sandia involved implementing and using scientific simulations designed for parallel supercomputers, as well as the creation of efficient parallel algorithms. Many of the models I worked on were particle based; some used structured grids or finite elements. Most of the codes I helped develop were for materials modeling, some for biology and informatics applications.

Software for download:

  • Publications, see more info at Google Scholar
  • University course in parallel computing
  • Humorous quotations

    Active Interests

  • Molecular Dynamics (MD): LAMMPS, ParaDyn, parallel algorithms, simulations (papers, pictures, movies)
  • Direct Simulation Monte Carlo - low-density reacting flows via particles, SPARTA and Icarus
  • Kinetic Monte Carlo - KMC and Metropolis MC simulator SPPARKS
  • Parallel FFTs - parallel distributed 3d/2d FFTs
  • Toolkit - Python-based tools for simulation setup, analysis, plotting, viz

    Past Projects

  • Informatics - data-intensive computing via a MapReduce-MPI library, and a stream-processing PHISH library
  • High Performance Computing (HPC) - neuro-inspired computing, performance comparisons of parallel architectures
  • Biological Cell Modeling - particle-based reaction/diffusion simulator ChemCell
  • Parallel Algorithms: rendezvous algorithms, dynamic load-balancing, tinkertoy parallel programming, matrix-vector multiply and many-body algorithms, HPCC RandomAccess (GUPS) benchmark
  • Gene Finding - parallelization of the Genehunter genetic linkage analysis program
  • Radiation Transport - Boltzmann equation for thermal and X-ray radiation
  • ChISELS - surface evolution model of semiconductor processing for micromachine devices (MEMS)
  • QuickSilver - particle-in-cell (PIC) relativistic electromagnetics
  • PRONTO - finite element transient dynamics (crash & boom) with contact detection
  • NIMROD - plasma simulation of tokamaks
  • Electronic Structure - quantum mechanics of solids
  • Image Processing - synthetic aperture radar (SAR) analysis
  • Grain Growth - Potts model on 2-d and 3-d lattices
  • Electron Microscopy - Monte Carlo trajectory simulation
  • Parallel Computing - general overviews