Limits RegistryPUBLIC RECORD
Limits RegistryFrontier, an HPE Cray EX system with AMD EPYC CPUs and Instinct MI250X GPUs at Oak Ridge National Laboratory, debuted at the top of the TOP500 list in May 2022 with 1.102 exaflop/s, the first officially measured exascale machine. By June 2026 five systems had passed the exaflop mark.
The question, scope, and sources behind this Registry record.
Frontier, an HPE Cray EX system with AMD EPYC CPUs and Instinct MI250X GPUs at Oak Ridge National Laboratory, debuted at the top of the TOP500 list in May 2022 with 1.102 exaflop/s, the first officially measured exascale machine. By June 2026 five systems had passed the exaflop mark.
The year in which a supercomputer first achieved at least 1 exaflop/s on the High-Performance Linpack benchmark, as recorded by TOP500.
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Current frontiers derived from accepted Claims.
An observed or demonstrated result; no opposing bound is implied.
The frontier is not sacred
Most progress starts with a disagreement that survives contact with evidence. If you can push the known lower bound up or pull the upper bound down, show us the work.
≥ when you have shown that at least this value is achievable.≤ when you have shown that anything above this value is impossible.No vibes. State the value, define the scope, and link the paper, proof, code, or reproduction that lets another person check it. Editors review every challenge before the public record changes.
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The frontier as it changed over time.
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Permanent ID limitsregistry.com/limits/LR-FIRST-EXASCALE-SUPERCOMPUTER
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Limits Registry. LR-FIRST-EXASCALE-SUPERCOMPUTER. First supercomputer to exceed one exaflop on HPL. 2026.