El Capitan (supercomputer)
| Active |
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|---|---|
| Sponsors | U.S. Department of Energy |
| Operators | Lawrence Livermore National Laboratory and U.S. Department of Energy |
| Location | Livermore Computing Complex |
| Architecture | HPE Cray Shasta |
| Power | 30 MW |
| TOSS | |
| Space | TBA |
| Memory | 5.4375 petabytes |
| Storage | TBA |
| Speed | 1.809 exaFLOPS (Rmax) / 2.821 exaFLOPS (Rpeak) |
| Cost | US$600 million (est.) |
| Ranking | TOP500: 2nd, June 2026 |
| Purpose | Scientific research and development, stockpile stewardship |
Hewlett Packard Enterprise El Capitan is an exascale supercomputer, hosted at Lawrence Livermore National Laboratory in Livermore, California, United States, that became operational in 2024. It is based on the Cray EX Shasta architecture.
El Capitan was the world's fastest supercomputer in the TOP500 rankings from November 2024 to June 2026, displacing Frontier at Oak Ridge National Laboratory. El Capitan is the third exascale system deployed by the United States and its primary purpose is to support the stockpile stewardship program of the US National Nuclear Security Administration.
It was surpassed as the fastest supercomputer in the world by LineShine.