A practical guide to understanding why your multi-node GPU training might be slower than expected.
How to Calculate if Your Network is Bottlenecking Distributed Training
· 8 min read
A practical guide to understanding why your multi-node GPU training might be slower than expected.
If you're building a multi-node GPU cluster for distributed training, you've probably run into a confusing mess of terminology — NVLink, NVSwitch, InfiniBand, RoCE, GPUDirect. Half the blog posts out there mix these up, and vendor documentation assumes you already know what you're doing.
So let's sort this out.