TOSS (operating system)

The Tri-Lab Operating System Stack (TOSS) is a Linux distribution based on Red Hat Enterprise Linux (RHEL) that was created to provide a software stack[1] for high performance computing (HPC) clusters[2] for laboratories within the National Nuclear Security Administration (NNSA).[3] The operating system allows multiple smaller systems to emulate a high-performance computing (HPC) platform.[1]

Tri-Lab Operating System Stack
OS familyUnix-like
Working stateCurrent
Package managerRPM Package Manager[1]

Linux distribution

The name "tri-lab" refers to the three major NNSA labs, the Lawrence Livermore National Laboratory, the Los Alamos National Laboratory, and the Sandia National Laboratories.[4]

The OS is used by NNSA computers including the El Capitan supercomputer[5] and systems using ARM architecture including the ThunderX2 system on a chip (SoC).[6] In addition to being used by the National Nuclear Security Administration (NNSA),[2] most of the systems in NASA's High-End Computing Capabiity Project, part of the NASA Advanced Supercomputing Division, were all migrated to TOSS in March 2022.[7]

Many of the software packages included in TOSS are from the RHEL repository. Additional packages are built using Fedora's Koji build system to create RPM packages.[1] The system also uses SLURM and Flux scheduling and resource management software.[1]

References
  1. de Supinski, Bronis R. (August 29, 2019). The LLNL Near and Long Term Vision for Large-Scale Systems (PDF) (Report). Retrieved August 28, 2022.
  2. "TOSS: Speeding Up Commodity Cluster Computing". Lawrence Livermore National Laboratory. Retrieved August 28, 2022.
  3. León, Edgar A.; D'Hooge, Trent; Hanford, Nathan; Karlin, Ian; Pankajakshan, Ramesh; Foraker, Jim; Chambreau, Chris; Leininger, Matthew L. (November 2020). TOSS-2020: a commodity software stack for HPC. SC '20: Proceedings of the International Conference for High Performance Computing, Networking, Storage and Analysis. Atlanta, Georgia. pp. 1–15. ISBN 978-1-7281-9998-6. OCLC 1223541587 – via IEEE.
  4. Morgan, Timothy Prickett (November 26, 2018). "One Linux stack to rule HPC and AI". NextPlatform.com. Retrieved August 28, 2022.
  5. Степин, Алексей (June 23, 2022). "2-Эфлопс cуперкомпьютер El Capitan получит новейшие APU AMD MI300" [2-Eflops El Capitan supercomputer will receive the latest AMD MI300 APUs]. ServerNews.ru (in Russian). Retrieved August 29, 2022. В El Capitan лаборатория перейдет от использования проприетарного системного и управляющего ПО к собственному стеку NNSA Tri-Lab Operating System Stack (TOSS). [At El Capitan, the laboratory will move from using proprietary system and management software to its own NNSA Tri-Lab Operating System Stack (TOSS).]
  6. Feldman, Michael (June 18, 2018). "Sandia to Install First Petascale Supercomputer Powered by ARM Processors". Top500. Retrieved August 29, 2022.
  7. "Migration to TOSS Operating System". NASA. July 20, 2022. Retrieved August 28, 2022.
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