Steve Plimpton 


I'm a staff member at Sandia National Laboratories, a US
Department of Energy lab, in the Center for Computing
Research. I'm currently in the Computational Multiscale
department. Previously I've been in the Scalable Algorithms,
Computational Biology, and Parallel Computational Sciences
departments.
My research involves implementing and using scientific simulations
designed for parallel supercomputers, which often requires creation of
efficient parallel algorithms. Many of the models are particle based,
some use structured grids or finite elements. Most of the codes I
develop are for materials modeling, some for biology and informatics
problems.
Software for download:
 LAMMPS = classical molecular dynamics
 SPARTA = Direct Simulation Monte Carlo (DSMC)
 SPPARKS = kinetic and Metropolis Monte Carlo
 ChemCell = spatial reaction/diffusion in biological cells
 CSlib = client/server messaging library
 fftMPI = parallel 3d/2d FFT library
 MapReduceMPI = MapReduce library on top of MPI
 PHISH = stream processing library on top of MPI
 FireHose = stream processing benchmarks
 CrossSim = simulator for modeling resisitve memory (analog) devices for neuromorphic computing
 Pizza.py = Pythonbased pre and postprocessing tools for LAMMPS, SPPARKS, SPARTA, ChemCell
Publications, see more info at Google Scholar
University course in parallel computing
Humorous quotations
Current Interests
Molecular Dynamics (MD): LAMMPS, ParaDyn, parallel algorithms, simulations (papers, pictures, movies)
Direct Simulation Monte Carlo  lowdensity reacting flows via particles, SPARTA and Icarus
Kinetic Monte Carlo  KMC and Metropolis MC simulator SPPARKS
Parallel FFTs  parallel distributed 3d/2d FFTs
Pizza.py Toolkit  Pythonbased tools for simulation setup, analysis, plotting, viz
Past Projects
Informatics  dataintensive computing via a MapReduceMPI library, and a streamprocessing PHISH library
High Performance Computing (HPC)  neuroinspired computing, performance comparisons of parallel architectures
Biological Cell Modeling  particlebased reaction/diffusion simulator ChemCell
Parallel Algorithms: grid transfer, dynamic loadbalancing, tinkertoy parallel programming, matrixvector multiply and manybody algorithms, HPCC RandomAccess (GUPS) benchmark
Gene Finding  parallelization of the Genehunter genetic linkage analysis program
Radiation Transport  Boltzmann equation for thermal and Xray radiation
ChISELS  surface evolution model of semiconductor processing for micromachine devices (MEMS)
QuickSilver  particleincell (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 2d and 3d lattices
Electron Microscopy  Monte Carlo trajectory simulation
Parallel Computing  general overviews
How to Reach Me
sjplimp at sandia.gov
Computational Multiscale Dept, MS 1316
Sandia National Laboratories
Albuquerque, NM 871851316
Related Sandia Links
Center for Computing Research
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