AI Cyberspace

Feb 8, 2025 · Artificial Intelligence

Why 8‑GPU Servers Are Essential for LLM Training and Which Interconnect Wins

With modern large‑language‑model workloads demanding massive parallelism, 8‑GPU servers have become the norm; this article explains the roles of CPUs, compares GPU‑to‑GPU interconnect options—including PCIe direct, PCIe Switch, NVLink, and NVSwitch—detailing their architectures, bandwidths, topologies, and trade‑offs for AI training.