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Model-Optimizer/examples/speculative_decoding/scripts/export_hf_checkpoint.py
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h-guo18 bc52b6cf12 Feat: Support VLLM one-model eagle ckpt; Add unit tests; (#573)
## What does this PR do?

**Type of change:** New feature, new tests; <!-- Use one of the
following: Bug fix, new feature, new example, new tests, documentation.
-->

**Overview:** 
- Add conversion scripts for eagle3 llm-compressor style checkpoint
  - Jira Ticket: https://jirasw.nvidia.com/browse/OMNIML-2866

- Add unit tests for `ar_validate.py`, `export_hf_checkpoint.py`, and
`convert_to_vllm_ckpt.py`.

## Usage
<!-- You can potentially add a usage example below. -->

```python
python scripts/convert_to_vllm_ckpt.py --input <eagle3 ckpt> --verifier <base model> --output <path>
```

## Testing
<!-- Mention how have you tested your change if applicable. -->

## Before your PR is "*Ready for review*"
<!-- If you haven't finished some of the above items you can still open
`Draft` PR. -->

- **Make sure you read and follow [Contributor
guidelines](https://github.com/NVIDIA/TensorRT-Model-Optimizer/blob/main/CONTRIBUTING.md)**
and your commits are signed.
- **Is this change backward compatible?**: Yes/No <!--- If No, explain
why. -->
- **Did you write any new necessary tests?**: Yes/No
- **Did you add or update any necessary documentation?**: Yes/No
- **Did you update
[Changelog](https://github.com/NVIDIA/TensorRT-Model-Optimizer/blob/main/CHANGELOG.rst)?**:
Yes/No <!--- Only for new features, API changes, critical bug fixes or
bw breaking changes. -->

## Additional Information
<!-- E.g. related issue. -->

---------

Signed-off-by: h-guo18 <67671475+h-guo18@users.noreply.github.com>
2025-11-19 14:26:39 -08:00

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Python

# SPDX-FileCopyrightText: Copyright (c) 2023-2025 NVIDIA CORPORATION & AFFILIATES. All rights reserved.
# SPDX-License-Identifier: Apache-2.0
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
"""Export a HF checkpoint (with ModelOpt state) for deployment."""
import argparse
import torch
from transformers import AutoModelForCausalLM
import modelopt.torch.opt as mto
from modelopt.torch.export import export_hf_checkpoint
def parse_args():
parser = argparse.ArgumentParser(
description="Export a HF checkpoint (with ModelOpt state) for deployment."
)
parser.add_argument("--model_path", type=str, default="Path of the trained checkpoint.")
parser.add_argument(
"--export_path", type=str, default="Destination directory for exported files."
)
return parser.parse_args()
mto.enable_huggingface_checkpointing()
args = parse_args()
model = AutoModelForCausalLM.from_pretrained(args.model_path, torch_dtype="auto")
model.eval()
with torch.inference_mode():
export_hf_checkpoint(
model, # The quantized model.
export_dir=args.export_path, # The directory where the exported files will be stored.
)
print(f"Exported checkpoint to {args.export_path}")