[Core][Distributed] add coordinator to reduce code duplication in tp and pp #5293
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GeauxEric
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Jun 7, 2024
zhuohan123
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Jun 12, 2024
vllm/distributed/parallel_state.py
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| _WORLD: Optional[GroupCoordinator] = None | ||
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| def get_world() -> GroupCoordinator: |
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How about the following changes? Make the function name easier to understand:
get_world->get_world_group?get_tp->get_tp_group?get_pp->get_pp_group?
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@youkaichao Great! I love this refactoring PR 👍 |
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…-project#5293) [Core][Distributed] add coordinator to reduce code duplication in tp and pp (vllm-project#5293)
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…-project#5293) [Core][Distributed] add coordinator to reduce code duplication in tp and pp (vllm-project#5293)
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…-project#5293) [Core][Distributed] add coordinator to reduce code duplication in tp and pp (vllm-project#5293)
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…-project#5293) [Core][Distributed] add coordinator to reduce code duplication in tp and pp (vllm-project#5293)
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…-project#5293) [Core][Distributed] add coordinator to reduce code duplication in tp and pp (vllm-project#5293)
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…-project#5293) [Core][Distributed] add coordinator to reduce code duplication in tp and pp (vllm-project#5293)
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This PR adds coordinator, the last piece in #3587 . The main benefit is that all distributed stuff (e.g. complicated selection logic in communication ops, prev/next rank logic, initialization&destruction logic) can be shared for all tp/pp code.
After this PR, we explicitly require the code writer specify which group it wants to operate on:
get_world()get_tp()get_pp()After that, they can just call
all_reduce,prev_rank... without any further changes.