Remove FP16_Optimizer patch for DeepSpeed #2213
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Deepspeed already includes the same FusedAdam FP16_Optimizer originally from NVIDIA/apex here: https://github.com/deepspeedai/DeepSpeed/blob/master/deepspeed/runtime/fp16/fused_optimizer.py Currently this line gives a warning saying: ``` /opt/conda/envs/py_3.10/lib/python3.10/site-packages/onnxruntime/training/optim/_modifier_registry.py:56: UserWarning: Skip modifying optimizer because of optimizer name not found in the registry: accelerate.utils.deepspeed.DeepSpeedOptimizerWrapper ``` i.e. the FP16 Optimizer from onnxruntime (https://github.com/microsoft/onnxruntime/blob/main/orttraining/orttraining/python/training/optim/fp16_optimizer.py) is not actually wrapping the DeepSpeed fused Adam optimizer anyway, so this line is redundant.
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Deepspeed (since 2022) already includes the FusedAdam FP16_Optimizer originally from NVIDIA/apex here (and it's better maintained wrt deepspeed grad_norm, MOE training, etc): https://github.com/deepspeedai/DeepSpeed/blob/master/deepspeed/runtime/fp16/fused_optimizer.py
Currently this line gives a warning saying:
which is actually caused by
get_full_qualified_type_name(optimizer.optimizer) = 'deepspeed.runtime.fp16.fused_optimizer.FP16_Optimizer'not being in the onnxruntime registry: https://github.com/microsoft/onnxruntime/blob/main/orttraining/orttraining/python/training/optim/_modifier_registry.pyi.e. the FP16 Optimizer from onnxruntime (https://github.com/microsoft/onnxruntime/blob/main/orttraining/orttraining/python/training/optim/fp16_optimizer.py) is not actually doing anything, just falling back to the DeepSpeed fused Adam optimizer anyway, so this line and the warning it causes are redundant.
What does this PR do?
Fixes # (issue)
Before submitting
Who can review?
@JingyaHuang