NVLink Fusion NVLink 6 stated domain
72 XPUsobserved
| Value kind | observed — Reported measurements, counts, and specifications keep the precision and scope stated by their source; an exact specification is not treated as a range. |
|---|---|
| Scope | NVLink 6 domain of up to 72 custom XPUs, as NVIDIA describes it for AWS Trainium4 (a design in progress, not a shipping system); the future roadmap maximum is a separate claim. Not arbitrary mixed-XPU interoperability. |
| As of | 2025-12-02 |
| Source | NVIDIA Technical Blog, AWS integrates AI infrastructure with NVIDIA NVLink Fusion for Trainium4, 2025-12-02. |
| Review | checking…review by 2026-12-05 · standard cadence |
| Recorded changes | last 2026-10-05 · 2 revisions tracked |
| Claim id | part8-nvlink6-fusion-domain |
Where the guide uses it
← Full numbers register — every date-stamped figure in the guide, with revision history.