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.

Computation Team Delivers Full-Service Support for New TANDM Positioner

Among the National Ignition Facility’s (NIF’s) 2016 priorities was the installation of a dual-purpose positioner called TANDM (Target and Diagnostic Manipulator), which holds either the target capsule or diagnostic equipment inside NIF’s 10 meter-diameter target chamber. The new positioner helps the NIF team increase productivity by reducing the time needed to switch between diagnostic instruments and targets. Like any equipment associated with the world’s largest high-energy laser system, TANDM depends on flexible yet precise software and hardware components.

Harnessing Laser-Like Focus to Improve System Efficiency and Reliability

Lawrence Livermore’s National Ignition Facility (NIF) is comprised of 192 laser beams that travel nearly one mile on their journey to the center of the 10-meter-diameter spherical target chamber. Each beam’s journey is completed within the blink of an eye, about 5 microseconds. However, the planning and execution of that journey often takes many months. The process to prepare, design, execute, analyze, and store the results of each laser shot is the focus of the NIF Information Technology (IT), Control Systems, and Data Systems teams.


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