# Multi-Node Run + Fault-Tolerant Training: 2 Node × 8 H100 NCCL Cluster

> Source: https://sukruyusufkaya.com/en/learn/fine-tuning-cookbook/ftc-multi-node-fault-tolerant-training
> Updated: 2026-05-14T14:42:53.121Z
> Category: Fine-Tuning Cookbook (Model-by-Model)
> Module: Part IV — Mid-Large Models (13B-70B+) + Distributed Internals
**TLDR:** Reality of cluster training: nodes fail, NCCL hangs, checkpoints get corrupted. Cookbook's fault-tolerant recipe: NCCL_TIMEOUT, watchdog, signal handling (SIGUSR1), elastic launcher, graceful preemption resume. Survival kit for 70B model 2-day training.