System Software

We’re creating an LLNL commodity cluster system software environment based on Linux/Open-Source. We use the Red Hat Enterprise Linux distribution, stripping out the modules we don’t need and adding and modifying components as required. Working in open source allows for important HPC customizations and builds in-house expertise. Having in-house software developers is necessary to quickly resolve problems (especially at scale) on our cutting-edge hardware without having to wait for the vendors. The environment includes Linux kernel modifications, cluster management tools, monitoring and failure detection, resource management, authentication and access control, and parallel file system software (detailed elsewhere). These clusters provide users with a production solution capable of running MPI jobs at scale. View content related to System Software.

Fusing software expertise with complex laser facility operations

LLNL is home to the National Ignition Facility (NIF), the world’s largest and most energetic laser.  This international scientific resource is designed to study the physics of matter at extreme densities, pressures, and temperatures. NIF uses 192 laser beams to compress fusion targets the size of an eraser to conditions required for thermonuclear ignition and burn.

We develop inventive software to enable innovative solutions

Software is everywhere at LLNL. As a Department of Energy (DOE) lab, we strengthen national and global security with a range of programs in fields like counterterrorism, biosecurity, and energy. Our work also contributes to the National Nuclear Security Administration’s stockpile stewardship mission. Researchers inside and outside the Lab rely on our high performance computing (HPC) center to advance science and technology.

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