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* [chat] set default gemini strategy

* [chat] set default zero2 strategy

* [chat] set default zero2 strategy

* [chat] strategy refactor unwrap model

* [chat] strategy refactor save model

* [chat] add docstr

* [chat] refactor trainer save model

* [chat] fix strategy typing

* [chat] refactor trainer save model

* [chat] update readme

* [chat] fix unit test

Co-authored-by: Yuanchen Xu <yuanchen.xu00@gmail.com>

* Add RoBERTa for RLHF Stage 2 & 3 (test)

RoBERTa for RLHF Stage 2 & 3 (still in testing)

* Revert "Add RoBERTa for RLHF Stage 2 & 3 (test)"

This reverts commit 06741d894dcbe958acd4e10d771f22275e20e368.

* Add RoBERTa for RLHF stage 2 & 3

1. add roberta folder under model folder
2. add  roberta option in train_reward_model.py
3. add some test in testci

* add test for reward model training

* Update test_ci.sh

* Revert "Update test_ci.sh"

This reverts commit 9c7352b81766f3177d31eeec0ec178a301df966a.

* Add RoBERTa for RLHF Stage 2 & 3 (test)

RoBERTa for RLHF Stage 2 & 3 (still in testing)

* Revert "Add RoBERTa for RLHF Stage 2 & 3 (test)"

This reverts commit 06741d894dcbe958acd4e10d771f22275e20e368.

* Add RoBERTa for RLHF stage 2 & 3

1. add roberta folder under model folder
2. add  roberta option in train_reward_model.py
3. add some test in testci

* Update test_ci.sh

* Revert "Update test_ci.sh"

This reverts commit 9c7352b81766f3177d31eeec0ec178a301df966a.

* update roberta with coati

Co-authored-by: Yuanchen Xu <yuanchen.xu00@gmail.com>

* add normalize function to value_head in bloom rm

* add normalization to value_function in gpt_rm

* add normalization to value_head of opt_rm

* add Anthropic/hh-rlhf dataset

* Update __init__.py

* Add LogExpLoss in RM training

* Update __init__.py

* update rm trainer to use acc as target

* update example/train_rm

* Update train_rm.sh

* code style

* Update README.md

* Update README.md

* add rm test to ci

* fix tokenier

* fix typo

* change batchsize to avoid oom in ci

* Update test_ci.sh

* fix lora bug

* polish

* fix lora gemini

* fix lora bug

* polish

* [chatgpt]fix train_rm bug with lora

* [chatgpt]support colossalai strategy to train rm

* fix pre-commit

* fix pre-commit 2

* [chatgpt]fix rm eval typo

* fix rm eval

* fix pre commit

* [chatgpt]fix train_rm bug with lora

* [chatgpt]support colossalai strategy to train rm

* fix pre-commit

* fix pre-commit 2