---
tags:
  - cua
  - megatron-bridge
  - checkpoint
  - atomic
---

# CUA Atomic Function, iter 422

This repository contains the Megatron model-weight initialization checkpoint used by the Complex Function training run. The checkpoint was imported on DGX from the 3x-full Function Hugging Face export at `iter_0000422`. An import/export comparison found all 738 tensors (9,319,730,176 tensor bytes) equal to that source export.

The local checkpoint directory is named `iter_0000000` because Complex training started a new optimization run. It does not contain the original 3x-full optimizer, scheduler, or RNG state. It is suitable as the exact model-weight starting point for Complex Function, not as a resume point for the original 3x-full training run.