deepspeedai / deepspeedai/DeepSpeed
[BUG]Zero stage3 can not save model weights correctly!
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bug
training
- Dominant language
- Python
- Stars
- 43.1k
- Forks
- 5k
- Avg merge
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- Merged PRs (30d)
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Description
Describe the bug
Traing the llama-7b model with zero stage3 and set stage3_gather_16bit_weights_on_model_save to true in ds_config.json, but the size of saved pytorch-model.bin is only 610K. It is strange that the saved model in checkpoint is normal.
The deepspeed version is 0.9.6
Contributor guide
First steps
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- Open a pull request that references the issue number.
Research direction
Start by reproducing Llama-7b training with ZeRO stage 3 and stage3_gather_16bit_weights_on_model_save enabled in ds_config.json. Compare the saved pytorch-model.bin with the normal checkpoint weights; done means the model save contains correctly gathered 16-bit weights rather than a 610K file.
Written by the indexing model from the issue text.
Assessment
- Tech stack
- python, pytorch
- Domain
- distributed-systems, machine-learning
- Issue type
- Bug
- Difficulty
- 4/5
- Estimated time
- 3-5 days
- Activity status
- Stale
- Clarity
- Needs clarification
- Newbie friendliness
- 35/100