Topic: Open-Source Software

This R&D 100 award-winning software solves HPC bottlenecks by enabling resource types, schedulers, and framework services to be deployed as needs evolve.

Six LLNL Computing researchers have been named Distinguished Members of Technical Staff in recognition of their extraordinary scientific and technical contributions.

This project constructs coarse time grids and uses each solution to improve the next finer-scale solution, simultaneously updating a solution guess over the entire space-time domain.

The latest chapter in the nearly 30-year history of hypre includes a new semi-structured algebraic multigrid solver and support for mixed numerical precision at runtime.

The hypre library's comprehensive suite of scalable parallel linear solvers makes large-scale scientific simulations possible by solving problems faster.

To learn more about the work taking place at Livermore Computing and the potential this has for a wide range of real-world applications, The Innovation Platform spoke to LLNL’s Deputy for High Performance Computing, Judy Hill.

FGPU provides code examples that port FORTRAN codes to run on IBM OpenPOWER platforms like LLNL's Sierra supercomputer.

GLVis is a lightweight tool for accurate and flexible finite element visualization that provides interactive visualizations of general FE meshes and solutions.

This project solves initial value problems for ODE systems, sensitivity analysis capabilities, additive Runge-Kutta methods, DAE systems, and nonlinear algebraic systems.

Highlights include innovative solutions for contact mechanics, HPC optimization, quantum dynamics, and carbon capture.

At SC25, LLNL earned multiple top honors across exascale computing, open-source software and real-world scientific applications, receiving four 2025 HPCwire awards and a Hyperion Research HPC Innovation Excellence Award.

The open-source MFEM library enables application scientists to quickly prototype parallel physics application codes based on PDEs discretized with high-order finite elements.

Five years strong, the MFEM workshop fosters connection and collaboration among the computational math community.

LLNL is participating in the 37th annual Supercomputing Conference (SC25) in St. Louis on November 16–21, 2025.

The RADIUSS project aims to lower costs and improve agility by encouraging adoption of our core open-source software products for use in institutional applications.

LLNL’s Python 3–based ATS tool provides scientific code teams with automated regression testing across HPC architectures.

Scientists at LLNL have helped develop an advanced, real-time tsunami forecasting system—powered by El Capitan, the world’s fastest supercomputer—that could dramatically improve early warning capabilities for coastal communities near earthquake zones.

A unique laser optic design and two novel open-source software projects bring the Laboratory’s R&D 100 awards total to 182.

Nicknamed SUM25, Spack’s first user meeting showcased new development and a thriving community.

Learn how to use a modern, open-source HPC software stack! From mid-July to mid-September, join our tutorials on how to install and use several projects on AWS EC2 instances (provided). All experience levels are welcome.

The award-winning HPC package manager has seen steady growth and community engagement since its open-source release in 2014.

This open-source library automatically maps HPC applications to supercomputers efficiently and transparently, so users can run on Day One on any system.

A new just-in-time compilation approach leverages LLVM intermediate representation to optimize GPU kernels with portability to any GPU architecture.

Highlights include ML techniques for computed tomography, a scalable Gaussian process framework, safe and trustworthy AI, and autonomous multiscale simulations.

Todd Gamblin has a well-deserved reputation in the HPC software community as a passionate engineer who enjoys rolling up his sleeves and diving into technical problems. It’s not a stretch to see how he got hooked on HPC.