[Misc] Move DP for ViT code inside model executor dir #25459
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Signed-off-by: DarkLight1337 <tlleungac@connect.ust.hk>
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Code Review
This pull request is a good refactoring that moves data parallelism utilities for vision models from vllm/multimodal/utils.py to a more appropriate location at vllm/model_executor/models/vision.py. The changes are well-contained, with tests moved alongside the code and all call sites updated accordingly. I have one suggestion to improve efficiency by creating a tensor on the correct device directly. Overall, this is a solid improvement to the codebase structure.
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| image_embeds_local = vision_model( | ||
| pixel_values_local, torch.tensor(local_grid_thw_list)) |
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For efficiency, it's better to create the local_grid_thw_list tensor directly on the target device to avoid an unnecessary CPU-to-GPU copy. The pixel_values_local tensor is already on the correct device.
Suggested change
| image_embeds_local = vision_model( | |
| pixel_values_local, torch.tensor(local_grid_thw_list)) | |
| image_embeds_local = vision_model( | |
| pixel_values_local, | |
| torch.tensor(local_grid_thw_list, | |
| device=pixel_values_local.device)) |
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Purpose
Code cleanup: move the code from
multimodal/utils.pytomodel_executor/models/vision.pyTest Plan
Test Result
Essential Elements of an Effective PR Description Checklist
supported_models.mdandexamplesfor a new model.