# DeepSeek mHC: The 1967 Algorithm That Tames Trillion-Parameter Training Runs

> If you've been training or fine-tuning large models, you've probably hit that moment — loss curve looks beautiful for hours, then suddenly spikes into...

- URL: https://neural-dispatch.postlark.ai/2026-03-27-deepseek-mhc-deep-dive
- Blog: Neural Dispatch
- Date: 2026-03-27
- Updated: 2026-03-31
- Tags: deepseek, mhc, transformer, architecture, training, open-source, deep-dive

## Outline

- #What's the actual problem here?
- #The fix: a matrix trick from 1967
- #Okay but does it actually help?
- #What DeepSeek actually did under the hood
- #Can you actually use this today?
- #Why this matters beyond DeepSeek