Expanse (SDSC)
Operational; San Diego Supercomputer Center is recorded as an operator of this site
Expanse is an NSF-funded supercomputer operated by the San Diego Supercomputer Center at UC San Diego and allocated through the ACCESS programme. Its GPU capacity is two partitions the operator documents separately: the original Expanse GPU nodes, 52 nodes with four NVIDIA V100 (32 GB SXM2) each, 208 GPUs; and the Expanse AI resource added under the NAIRR Pilot, 34 Dell XE9640 servers with four NVIDIA H100 each, 136 GPUs, which SDSC's 2024–2025 annual report describes as two compute units of 17 GPU nodes funded by a $5.3 million NSF supplement. The H100 variant and the AI resource's installation date are not stated by the operator.
Date in site records: Sep 11, 2026. Site data: San Diego Supercomputer Center documentation.
Ownership and operation
Site operator San Diego Supercomputer Center. “Expanse is an NSF-funded system operated by the San Diego Supercomputer Center at UC San Diego, and is available through the ACCESS program.” source
Export controls and government links
No export-control designations were found in the checked company chains.
Headquarters jurisdiction
A company in the ownership chain is headquartered in the United States
United States: Operates the Export Administration Regulations (EAR) and the BIS Entity List under 15 CFR 730–774; deemed-export rules extend reach to foreign nationals on US soil. Export-control regimes listed for this jurisdiction: Wassenaar Arrangement, US EAR (BIS Entity List authority).
Capacity
Facility power
No power figure is recorded for this site.
Power for IT equipment
Accelerators
Present inventory by partition
withheld NVIDIA H100 does not identify an H100 form factor.
136 × NVIDIA H100
installed (from the facility status)
Held: Variant not stated; rate depends on it. NVIDIA H100 does not identify an H100 form factor. Documented variants: H100 SXM5 989.5; H100 PCIe 756 TFLOP/s; none applied.
SDSC Expanse user guide (undated; read 2026-09-11) and SDSC Annual Report 2024–2025 · tier 1 · Expanse AI resource (NAIRR Pilot expansion): 34 Dell XE9640 servers × 4 H100 per the user guide; the 2024–25 annual report describes it as two SSCUs × 17 GPU nodes × 4 H100. H100 variant not stated.
208 × NVIDIA V100 SXM2 32GB
installed (from the facility status)
125 TFLOP/s dense FP16 per accelerator · partition peak 26 PFLOP/s · rate citation
SDSC Expanse user guide (undated; read 2026-09-11) · tier 1 · Original Expanse GPU partition: 52 GPU nodes × 4 NVIDIA V100 (32 GB SXM2); the guide's system table states 'Total V100 GPUs 208'.
One partition is held, so no facility figure is derived; the held partition’s count and source remain visible and nothing is substituted for its rate. Rates are the cited dense FP16 figure per accelerator; the sum applies the methodology’s utilization and interconnect assumptions and is a theoretical aggregate, not one job’s throughput. The catalogue figures above are the record’s scalar fields (the source’s transcription, or its recorded correction) and are a different basis.
Methods and sources
Ownership roles
Title identifies the legal owner of the site; operation identifies who runs it. AI-hardware ownership follows the catalog’s attribution of the machines inside, whose owner may lease the facility.
Each role requires its own attribution. An operator named in a source supplies evidence of operation only.
Parent companies
Ownership checks start with each company named at the site and follow recorded parent relationships. A company holding several roles is checked once. Its linked company page lists the relationships and their sources; further parents may remain undocumented.
Level 1 identifies a company at the site, level 2 its parent, and each further level another parent. Export-control designations and government investments are assigned to the company concerned.
Missing values
Unrecorded roles remain blank. Findings whose company position is unresolved stay in the list with that position labelled unknown.
Publication limits
Subscription corporate data helps identify parent relationships and sovereign investments. Publication is limited to relationship classes and supporting public sources; licensed records, identifiers and values are withheld.
Related analysis
- Expanse (SDSC) on the global mapOpens the map at this site’s pin, among the facilities around it.
- Expanse (SDSC) in the threshold comparisonEach listed site’s estimated compute against regulatory training thresholds, or the reason no estimate is admitted.
- Allied coordination: Ownership chain incompletely recordedThe Allied Coordination Gap Analyzer lists this site under that class of ownership chain.
- United States country profileFacility capacity, government programmes and export-control access for the country this site is in.
Browse the facilities directory or search the company directory.