NNSA-class exascale system. The first to deploy AMD MI300A APUs at supercomputer scale.
HPE / AMD · workstation
Verified 2w ago
El Capitan
LLNL's exascale system, No. 2 on the June 2026 TOP500 — AMD MI300A APUs across millions of cores.
HPE Cray EX255a at Lawrence Livermore National Laboratory for the NNSA. AMD Instinct MI300A APUs + 4th Gen EPYC over Slingshot-11; sustains 1,809 PFLOP/s HPL. Held No. 1 on the TOP500 from November 2024 through November 2025; No. 2 on the June 2026 list, behind China's LineShine.
Specs
- compute
- AMD EPYC + Instinct MI300A APU