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.
Looking Ahead to SC20: More Than HPC
LLNL’s Computing Directorate heads to the 32nd annual Supercomputing Conference (SC20) held virtually on November 9–19. Although the format is different this year, we’re turning out in full force.
Computing’s Partnership with Environmental Programs at the Lab Adds Up to Environmental Stewardship
Computing employees play a critical role in supporting the Environmental Restoration Department; Environment, Safety, and Health; and Radioactive and Hazardous Waste Management.
16 Bits from the Winter Hackathon
New year, new hackathon! The January 30–31 event was Computing’s 23rd hackathon and the 1st scheduled in the winter season.
Louella Panaga Helps Keep the Lab Running
The Lab is in many ways similar to a small city, and people like Louella Panaga help keep it operational day to day, hour to hour, and minute to minute.
Jorge Castro Morales Thrives on Multiple Responsibilities
Jorge Castro Morales likes having different responsibilities at work. He says, “I’m honored to be working with a diverse team of multidisciplinary experts to resolve very complex problems on a daily basis.”
Dianne Calloway Enjoys an Evolving Career
Dianne Calloway has been at the Lab for 35 years, yet she is never bored. Her team in Computing’s Enterprise Application Services (EAS) Division builds and maintains data-tracking applications that support a huge variety of work at the Lab.
Rachael Lemos Constantly Learns New Things
Rachael Lemos is a software developer in Computing’s Applications, Simulations, & Quality Division, or ASQ. She’s a great example of the Lab’s student success, as she was a summer intern before landing a full-time job.
TEIMS: Taurus Environmental Information Management System
The Taurus Environmental Information Management System, or TEIMS, system manages collaborative tasks, site characterization, modeling, risk assessment, decision support, operations tracking, compliance monitoring, and regulatory reporting for the Environmental Restoration Department. TEIMS also monitors LLNL’s performance in applying environmental technologies to the Department of Energy/National Nuclear Security Administration long-term stewardship program.
Persistence Pays for Jorge Escobar
There’s many a circuitous path to a career at Lawrence Livermore. Jorge Escobar, for instance, began as a custodian with Johnson Controls; today, he’s a member of the Livermore Information Technology (LivIT) institutional Mac services team in Computing’s Information Technology Solutions division.
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