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154 lines
4.4 KiB
Python
154 lines
4.4 KiB
Python
# SPDX-License-Identifier: Apache-2.0
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# SPDX-FileCopyrightText: Copyright contributors to the vLLM project
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from vllm.v1.kv_offload.abstract import LoadStoreSpec
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from vllm.v1.kv_offload.worker.worker import (
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OffloadingHandler,
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OffloadingWorker,
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TransferResult,
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TransferSpec,
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)
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class LoadStoreSpec1(LoadStoreSpec):
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def __init__(
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self,
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submit_success: bool = True,
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async_success: bool = True,
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exception: bool = False,
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):
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self.finished = False
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self.submit_success = submit_success
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self.async_success = async_success
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self.exception = exception
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@staticmethod
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def medium() -> str:
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return "1"
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def __repr__(self):
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return f"{self.medium()}: {id(self)}"
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class LoadStoreSpec2(LoadStoreSpec):
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@staticmethod
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def medium() -> str:
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return "2"
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def __repr__(self):
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return f"{self.medium()}: {id(self)}"
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class OffloadingHandler1To2(OffloadingHandler):
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def __init__(self):
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self.transfers: dict[int, LoadStoreSpec1] = {}
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def transfer_async(self, job_id: int, spec: TransferSpec) -> bool:
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src, dst = spec
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assert isinstance(src, LoadStoreSpec1)
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assert isinstance(dst, LoadStoreSpec2)
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if src.exception:
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raise Exception("An expected exception. Don't worry!")
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if not src.submit_success:
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return False
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self.transfers[job_id] = src
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return True
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def get_finished(self) -> list[TransferResult]:
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finished = []
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for job_id, spec in list(self.transfers.items()):
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if spec.finished:
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finished.append((job_id, spec.async_success))
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del self.transfers[job_id]
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return finished
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class OffloadingHandler2To1(OffloadingHandler):
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def __init__(self):
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self.transfers: dict[int, LoadStoreSpec1] = {}
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def transfer_async(self, job_id: int, spec: TransferSpec) -> bool:
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src, dst = spec
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assert isinstance(src, LoadStoreSpec2)
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assert isinstance(dst, LoadStoreSpec1)
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self.transfers[job_id] = dst
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return True
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def get_finished(self) -> list[TransferResult]:
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finished = []
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for job_id, spec in list(self.transfers.items()):
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if spec.finished:
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finished.append((job_id, spec.async_success))
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del self.transfers[job_id]
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return finished
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def test_offloading_worker():
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"""
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Tests OffloadingWorker with 2 handlers.
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One handler performs 1->2 transfers, and the other handles 2->1.
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"""
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worker = OffloadingWorker()
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handler1to2 = OffloadingHandler1To2()
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handler2to1 = OffloadingHandler2To1()
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worker.register_handler(LoadStoreSpec1, LoadStoreSpec2, handler1to2)
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worker.register_handler(LoadStoreSpec2, LoadStoreSpec1, handler2to1)
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# 1st transfer 1->2 (exception)
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src1 = LoadStoreSpec1(exception=True)
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dst1 = LoadStoreSpec2()
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assert not worker.transfer_async(1, (src1, dst1))
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# 2ed transfer 1->2 (failure to submit)
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src2 = LoadStoreSpec1(submit_success=False)
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dst2 = LoadStoreSpec2()
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assert not worker.transfer_async(2, (src2, dst2))
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# 3rd transfer 1->2 (failure)
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src3 = LoadStoreSpec1(async_success=False)
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dst3 = LoadStoreSpec2()
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assert worker.transfer_async(3, (src3, dst3))
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# 4th transfer 1->2 (success)
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src4 = LoadStoreSpec1()
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dst4 = LoadStoreSpec2()
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worker.transfer_async(4, (src4, dst4))
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assert set(handler1to2.transfers.keys()) == {3, 4}
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# 5th transfer 2->1
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src5 = LoadStoreSpec2()
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dst5 = LoadStoreSpec1()
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worker.transfer_async(5, (src5, dst5))
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assert set(handler2to1.transfers.keys()) == {5}
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# no transfer completed yet
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assert worker.get_finished() == []
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# complete 3rd, 4th
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src3.finished = True
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src4.finished = True
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# 6th transfer 1->2
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src6 = LoadStoreSpec1()
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dst6 = LoadStoreSpec2()
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worker.transfer_async(6, (src6, dst6))
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# 7th transfer 2->1
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src7 = LoadStoreSpec2()
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dst7 = LoadStoreSpec1()
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worker.transfer_async(7, (src7, dst7))
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# 6th and 7th transfers started
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assert 6 in handler1to2.transfers
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assert 7 in handler2to1.transfers
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# verify result of 3rd and 4th transfers
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assert sorted(worker.get_finished()) == [(3, False), (4, True)]
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# complete 6th and 7th transfers
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src6.finished = True
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dst7.finished = True
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assert sorted(worker.get_finished()) == [(6, True), (7, True)]
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