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Machine Catalog
We constantly redefine technology's boundaries.

Our hardware enables discovery-level science. The unique, world-class, balanced environment we’ve created at LLNL has helped usher in a new era of computing and will inspire the next level of technical innovation and scientific discovery.

Livermore Computing (LC) delivers multiple petaFLOP/s of compute power, massive shared parallel file systems, powerful data analysis platforms, and archival storage capable of storing hundreds of petabytes of data. We support a broad range of diverse and dynamic computing architectures—Blue Gene/Q; our Linux clusters, some of the largest on the planet (with Zin being the biggest at 980 teraFLOP/s); visualization, high-memory, and big data machines (such as Apache Hadoop servers); and homogeneous and heterogeneous core architectures. We continually explore new architectures and technologies.

Our advanced technology systems, such as Sequoia, are used to run large-scale multiphysics codes in a production environment. Our advanced architecture systems explore technologies at scale with the intent that matured technology can be used as a basis to design future production resources.

We also specialize in deploying commodity technology systems. These systems leverage industry advances and open-source software standards to build, field, and integrate Linux clusters of various sizes.

LLNL has deployed dozens of very large Linux clusters since 2001. These clusters are modular in nature and provide a common programming model. Hardware components are carefully selected for performance, usability, manageability, and reliability, and are then integrated and supported using a strategy that evolved from practical experience.

We also deploy specialized visualization clusters and archival storage, as well as support and contribute to the development of the open-source Lustre parallel file systems. Lustre is mounted across multiple compute clusters and delivers high-performance, global access to data.

For configuration details of the more than 20 production compute platforms supported by LC, see our systems summary. Descriptions of a few of our computers are included below. Visit our history page for a visual history of supercomputing at LLNL.


The IBM BlueGene/Q Sequoia supercomputer supports NNSA classified stockpile science, produces record predictive simulations, and ranks first at running data science workloads.
Sierra, Livermore’s next advanced technology high performance computing system, will join LLNL’s lineup of supercomputers in 2017-2018.
The 150 teraFLOP/s Catalyst, a unique high-performance computing cluster, serves as a proving ground for new technologies, architectures, and applications.
U.S. industrial partners access Vulcan, a powerful 5-petaFLOPS supercomputing resource, via the HPC Innovation Center, whose mission is to enhance American competitiveness.
NNSA's new capacity computing systems will provide the needed computing capacity for NNSA’s day-to-day scientific work at the three labs managing the nation’s nuclear deterrent.


Cab, an efficient Linux commodity cluster, delivers 431-teraFLOPS to aid unclassified science and industry collaboration.