Computational science · HPC software · scientific computing

William Reading Tobin

Public-facing material on scientific software, numerical computing, mixed-language systems, and reproducible technical practice.

Publications, Talks, and Code

Public Work

Selected publications, talks, open-source projects, and other material available publicly.

This page collects artifacts that are already public: open-source repositories, papers, talks, posters, self-published notes, and profile identifiers.

Open-source repositories

  • GitHub profile: github.com/wrtobin
  • GEOS-DEV: public organization for the GEOS multiphysics software ecosystem.
  • mdg-graphics: public releases for graphics, database, and postprocessing tools maintained within the Method Development Group ecosystem.
  • Public repositories in this area are release-facing snapshots and should be read as representative public artifacts.
  • mili: binary database format and supporting tools used by MDG simulation codes for mesh-based simulation data.
  • mili-python: Python query and reader layer for Mili databases. I fully authored this layer and use it as a vehicle for making legacy database content more accessible to modern analysis workflows.
  • griz: postprocessing visualization tool for Mili databases.
  • Mili and Griz are long-lived legacy projects that remain operationally important. My work on them has centered on technical leadership, maintenance, and stabilization while newer, better-architected successors are developed.
  • Earlier open-source work, including LAS, msi, and byte_stream, is summarized in Graduate and Postdoctoral Work.

Publications

  • Randolph R. Settgast and collaborators, including William R. Tobin. GEOS: A performance portable multi-physics simulation framework for subsurface applications. Journal of Open Source Software, 2024.
  • Randolph R. Settgast, Yohann Dudouit, Nicola Castelletto, William R. Tobin, Benjamin C. Corbett, and Sergey Klevtsov. Performant low-order matrix-free finite element kernels on GPU architectures. arXiv:2308.09839
  • Victor W. L. Chan, William R. Tobin, Sijia Zhang, Beth A. Winkelstein, Victor H. Barocas, Mark S. Shephard, and Catalin R. Picu. Image-based Multi-scale Mechanical Analysis of Strain Amplification in Neurons Embedded in Collagen Gel. Computer Methods in Biomechanics and Biomedical Engineering.
  • Earlier work and related projects also appear in Graduate and Postdoctoral Work.

Talks

  • William R. Tobin, Victor W. L. Chan, and Mark S. Shephard. Load Balancing Multiscale Simulations. SIAM Conference on Computational Science and Engineering, 2015.
  • William R. Tobin, Daniel Fovargue, and Mark S. Shephard. Parallel Infrastructure for Multiscale Simulation. SIAM Conference on Parallel Processing for Scientific Computing, 2014.
  • Randolph Settgast, David Trebotich, Victor A. Magri, William R. Tobin, and Terry J. Ligocki. Development of an Exascale Subsurface Simulator of Coupled Flow, Transport, Reactions, and Mechanics. SIAM Conference on Parallel Processing for Scientific Computing, Baltimore, Maryland, 2024. Presented by William R. Tobin.

Posters

  • Randolph Settgast, William R. Tobin, Nicola Castelletto, Yohann Dudouit, Sergey Klevtsov, and Benjamin Corbett. Performant Low-order Matrix-free Finite Element Kernels on GPU Architectures. SC23 Research Posters, 2023.

Teaching and notes

  • Informal self-published technical notes are collected in Notes.

Example Projects

  • Browser-runnable demonstrations and small numerical experiments appear in Lab.

Public identifiers