https://github.com/EleutherAI/gpt-neox

An implementation of model parallel autoregressive transformers on GPUs, based on the Megatron and DeepSpeed libraries
https://github.com/EleutherAI/gpt-neox

deepspeed-library gpt-3 language-model transformers

Last synced: about 1 month ago
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An implementation of model parallel autoregressive transformers on GPUs, based on the Megatron and DeepSpeed libraries

• Host: GitHub
• URL: https://github.com/EleutherAI/gpt-neox
• Owner: EleutherAI
• License: apache-2.0
• Created: 2020-12-22T14:37:54.000Z (almost 4 years ago)
• Default Branch: main
• Last Pushed: 2024-10-24T15:03:07.000Z (about 2 months ago)
• Last Synced: 2024-10-29T15:35:14.982Z (about 1 month ago)
• Topics: deepspeed-library, gpt-3, language-model, transformers
• Language: Python
• Homepage: https://www.eleuther.ai/
• Size: 111 MB
• Stars: 6,913
• Watchers: 124
• Forks: 1,008
• Open Issues: 89
• Metadata Files:
  • Readme: README-MUP.md
  • Contributing: CONTRIBUTING.md
  • License: LICENSE
  • Citation: CITATION.cff
  • Codeowners: .github/CODEOWNERS

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README

        
# How to use Mup (https://github.com/microsoft/mup)

## Add mup neox args to your config

```

# mup

"use-mup": true,

"save-base-shapes": false, # this only needs to be enabled once in order to generate the base-shapes-file on each rank

"base-shapes-file": "base-shapes", # load base shapes from this file

"coord-check": false, # generate coord check plots to verify mup's implementation in neox

# mup hp search

"mup-init-scale": 1.0,

"mup-attn-temp": 1.0,

"mup-output-temp": 1.0,

"mup-embedding-mult": 1.0,

"mup-rp-embedding-mult": 1.0,

```

## Generate base shapes

1. Set use-mup to true

2. Set save-base-shapes to true

3. Run once. gpt-neox will instantiate a base model and a delta model, then save one file per rank named .. gpt-neox will exit immediately.

4. Set save-base-shapes to false

## Generate coord check plots (optional)

1. Keep use-mup true

2. Set coord-check to true

3. Run once. gpt-neox will output jpg images similar to https://github.com/microsoft/mutransformers/blob/main/README.md#coord-check. gpt-neox will exit immediately

4. Set coord-check to false

## Tune mup hyperparameters and LR

The values under `mup hp search` were added and correspond to appendix F.4 from https://arxiv.org/pdf/2203.03466.pdf. These and LR are tuned with a random search using the scaled-up config (tested with 6-7B.yml) but with hidden-size set to the value from the scaled-down config (125M.yml).

## Transfer

With the best LR set and the best mup HPs set, revert the value of hidden-size in the scaled-up config and run again.