# EDMDiffusion v20 (diff20)

- `diff20-step062000-val0.4413.ckpt` — PyTorch Lightning checkpoint, step 62000, val loss 0.4413 (includes optimizer state).
- Paired VAE: `../vae/vae11_best.ckpt` (its weights are also embedded in this checkpoint under `vae.*`).
- `latent_channel_scale` (measured on vae11 latents) and ERA5 normalisation stats are stored in the checkpoint hyper-parameters.
- Training config: `scripts/configs/diffusion_v20_hpc.yaml` in the ndvi-diffusion repo.