Governing Board

Andy Warner is a Distinguished Technologist at Hewlett-Packard Enterprise. He is HPE’s chief systems architect for HPC, and he has been active in a number of large HPC deployments, including Astra, the first large-scale ARM supercomputer, deployed at Sandia National Laboratories, the Frontier system at Oak Ridge National Laboratory, and LLNL’s upcoming El Capitan supercomputer. Andy leads the packaging working group as part of the CORAL2 collaboration that led to the last two of these systems, and he has been a long-time advocate for using open source solutions and open collaboration as a means to meet customer needs. Andy is HPE’s representative on the governing board of the High Performance Software Foundation.

Axel Huebl is a computational physicist working on the interface of Exascale simulations and machine learning / data science for particle acceleration, inertial fusion energy, and laser-plasma physics. As a scientist at Berkeley Lab, he leads the software architecture of the Beam, Plasma & Accelerator Simulation Toolkit (BLAST). His pioneered particle-in-cell modeling on GPUs with leading contributions to the PIConGPU and WarpX projects and is a vivid advocate for open science, founding the open particle-mesh data project (openPMD) for self-describing, scalable I/O and data science. He co-first-authored the paper winning the 2022 ACM Gordon Bell Prize, running the BLAST code WarpX on the first reported Exascale machine Frontier.

Mr. Hoffman is a founder of Kitware and currently serves as Chairman of the Board, Vice President, and Chief Technical Officer (CTO). He is the original author and lead architect of CMake, an open source, cross-platform build and configuration tool that is used by hundreds of projects around the world, and he is the co-author of the accompanying text, Mastering CMake. Using his 20+ years of experience with large software systems development, Mr. Hoffman is also a major technical contributor to Kitware’s Visualization Toolkit, Insight Toolkit, and ParaView projects.

As CTO, Mr. Hoffman’s emphasis is on software development methodologies and establishing best practices across the breadth of Kitware’s development efforts. As one of the visionaries leading the quality software process efforts at Kitware, Bill has been instrumental in adopting agile programming practices, fueling Kitware’s software development. He is a frequent speaker on these subjects and has appeared at the O’Reilly Open Source Conference and as an invited speaker at the Google tech talk series.

Mr. Hoffman received a B.S. in Computer Science from the University of Central Florida and an M.S. in Computer Science from Rensselear Polytechnic Institute (RPI). Prior to the formation of Kitware, he spent nine years at the General Electric Corporate Research and Development center, working in the Computer Vision Group. He has planned and taught several graduate-level courses at RPI as well as a course in object-oriented programming at New York University.

Christian Trott is a high performance computing expert with extensive experience in designing and implementing software for modern HPC systems. He is a principal member of staff at Sandia National Laboratories, where he co-leads the Kokkos core team developing performance portability solutions for engineering and science applications. Christian is also the head of Sandia’s delegation to the ISO C++ standards committee, and a principal author of C++ standard features such as mdspan and linear algebra support. He also serves as adviser to numerous application teams, helping them redesign their codes using Kokkos and achieve performance portability for the next generation of supercomputers.

In the past, Christian contributed significantly to numerous scientific software projects such as Trilinos and LAMMPS. He earned a doctorate in theoretical physics with a focus on computational material research from the Ilmenau University of Technology in Germany.

Damien Lebrun-Grandie is a Computational Scientist with Oak Ridge National Laboratory. His research is focused on the development of algorithms and enabling technologies for the solution of large-scale complex engineering and scientific problems. He is a high-performance computing expert and is a member of the ISO C++ Standards Committee. He co-leads the Kokkos performance portability library team. He holds an MEng in applied physics from Grenoble INP in France, and an MSc in physics from Karlsruhe Institute of Technology in Germany. He completed his PhD in nuclear engineering at Texas A&M University.

Joe Greenseid is a Principal Product Manager at Microsoft in the Azure HPC and AI Engineering team. His role includes helping customers understand how to take advantage of new HPC and AI technologies and capabilities to improve their overall scientific and business outcomes. He has over twenty years of HPC experience, including working at the National Center for Supercomputing Applications (NCSA), Northrop Grumman, and Cray/HPE. His background is in architecting, deploying, and using HPC systems at scale. His interests include exploring the role of on-demand, flexible computing platforms in large-scale HPC environments and monitoring of complex, integrated systems.

Julien Bigot holds a PhD in computer science and works as a permanent CEA Research Scientist at Maison de la Simulation. His main research interest is related to programming models for HPC applications. He focuses on separation of concerns between performance optimization and semantics, both for algorithm expression and data analytics. He co-leads Exa-DoST, the project of NumPEx building the French data-oriented Exascale software stack. He also leads CExA, the project of the CEA to contribute to Kokkos and port applications to GPU based on this.

Matt Vaughn is a Principal Product Manager for HPC and scientific computing at Amazon Web Services, working to bring user-friendly HPC and cloud systems to users from a variety of domains. He holds a PhD in Plant Molecular Biology from the University of Urbana. Prior to joining AWS, Matt was Director of Life Sciences Computing at the Texas Advanced Computing Center (TACC) at UT Austin. While there, he co-led multiple projects in national-scale cyberinfrastructure including the CyVerse project, the Jetstream academic cloud, and multiple basic research initiatives in plant epigenetics and genome dynamics.

Todd Gamblin is a Distinguished Member of Technical Staff at Lawrence Livermore National Laboratory (LLNL). He created Spack (spack.io), a widely used open-source package manager for high performance computing, partially sustained by the PESO project. He is a co-founder of the High Performance Software Foundation (hpsf.io). At LLNL, he works on software and future computing strategy in the Advanced Technology Office in LLNL’s Livermore Computing division, and he leads a number of research and development projects focused on software integration.