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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, such as the Tri-Lab Linux Capacity Clusters. 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 have commodity nodes, provide a common programming model, and implement similar cluster architectures. 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 High Performance Computing Complex in the 2017-2018 time frame.
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.


Cab, an efficient Linux commodity cluster, delivers 431-teraFLOPS to aid unclassified science and industry collaboration.
Sierra, a 261-teraFLOPS Dell system, is a workhorse for solving computationally intensive unclassified research problems.