Limits RegistryPUBLIC RECORD
Limits RegistryFrontier, the exascale supercomputer at Oak Ridge National Laboratory, aggregates roughly 9.2 petabytes of total system memory (combining CPU-attached DDR4 memory and GPU-attached HBM2e memory) across its more than 9,400 compute nodes — distinct from the system's separate roughly 679-petabyte Orion storage system, which holds persistent data rather than working memory. This aggregate main-memory figure reflects the total in-memory working set available across the whole machine at once, a key constraint for the largest simulation and AI workloads it runs.
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Frontier, the exascale supercomputer at Oak Ridge National Laboratory, aggregates roughly 9.2 petabytes of total system memory (combining CPU-attached DDR4 memory and GPU-attached HBM2e memory) across its more than 9,400 compute nodes — distinct from the system's separate roughly 679-petabyte Orion storage system, which holds persistent data rather than working memory. This aggregate main-memory figure reflects the total in-memory working set available across the whole machine at once, a key constraint for the largest simulation and AI workloads it runs.
The total aggregate main memory capacity (CPU DDR plus GPU HBM) summed across all compute nodes of Oak Ridge National Laboratory's Frontier supercomputer, a distinct metric from the system's computational throughput or its Orion storage-system capacity.
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Current frontiers derived from accepted Claims.
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The frontier as it changed over time.
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1 accepted Claim, with 1 linked evidence records.
Permanent ID limitsregistry.com/limits/LR-FRONTIER-SYSTEM-MEMORY-CAPACITY
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Limits Registry. LR-FRONTIER-SYSTEM-MEMORY-CAPACITY. Largest aggregate system memory in a single supercomputer. 2026.