NVIDIA BlueField-4 Powers New Scale-In Network Infrastructure for Agentic AI Factories | NVIDIA Technical Blog

This post introduces 'Scale-In' network infrastructure as the fifth pillar of NVIDIA AI networking, specifically detailing the role of NVIDIA BlueField-4, DOCA, and Spectrum-X Ethernet in accelerating the north-south access path for agentic AI factories. It explains how BlueField-4's host-independent processing, 800 Gb/s interface, and inline acceleration engines enable line-rate networking, storage, and security. The post highlights DOCA's role in programming these services via containerized microservices and SDKs for unified operation, and Spectrum-X Ethernet's contribution to high-performance fabric with congestion management. It also outlines specific use cases like isolated AI factory VPCs, hardware-enforced security, accelerated storage, DPU-native orchestration, and fleet-wide observability. The integration of BlueField Astra for unified control across Scale-In and Scale-Out domains is also discussed.