608 lines
21 KiB
Python
608 lines
21 KiB
Python
"""Unit tests for decode queue one-pass compaction."""
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import unittest
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from types import SimpleNamespace
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from typing import Any, cast
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from unittest.mock import patch
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from sglang.srt.disaggregation.base import KVPoll
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from sglang.srt.disaggregation.decode import (
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DecodePreallocQueue,
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DecodeRequest,
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DecodeTransferQueue,
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SchedulerDisaggregationDecodeMixin,
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)
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from sglang.srt.disaggregation.utils import ReqToMetadataIdxAllocator
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from sglang.srt.managers.schedule_batch import FINISH_ABORT
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from sglang.test.ci.ci_register import register_cpu_ci
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from sglang.test.test_utils import CustomTestCase
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register_cpu_ci(est_time=8, suite="stage-a-test-cpu")
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class FakeReq:
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def __init__(self, rid, bootstrap_room):
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self.rid = rid
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self.bootstrap_room = bootstrap_room
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self.bootstrap_host = "host"
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self.return_logprob = False
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self.latencies = []
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self.origin_input_ids = []
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self.output_ids = []
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self.is_retracted = True
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self.load_calls = []
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self.prealloc_done = False
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self.finished_reason = cast(Any, None)
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self.cached_tokens = 0
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self.init_next_round_calls = []
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self.sampling_params = SimpleNamespace(max_new_tokens=0)
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class FakeTimeStats:
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def __init__(self):
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self.forward_entry_time = None
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def set_bootstrap_done_time(self):
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return None
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def set_decode_transfer_queue_entry_time(self):
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return None
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def set_wait_queue_entry_time(self):
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return None
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def set_forward_entry_time(self, ts):
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self.forward_entry_time = ts
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self.time_stats = FakeTimeStats()
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def add_latency(self, stage):
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self.latencies.append(stage)
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def load_kv_cache(self, req_to_token_pool, token_to_kv_pool_allocator):
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self.load_calls.append((req_to_token_pool, token_to_kv_pool_allocator))
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def init_next_round_input(self, tree_cache):
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self.init_next_round_calls.append(tree_cache)
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class FakeReceiver:
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def __init__(self, should_fail=False):
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self.should_fail = should_fail
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self.init_calls = []
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self.clear_calls = 0
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def init(self, *args):
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self.init_calls.append(args)
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def failure_exception(self):
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if self.should_fail:
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raise RuntimeError("boom")
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def clear(self):
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self.clear_calls += 1
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return None
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class FakeBatch:
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def __init__(self):
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self.prepared = False
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self.processed = []
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def prepare_for_prebuilt(self):
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self.prepared = True
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def process_prebuilt(self, server_args, future_map):
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self.processed.append((server_args, future_map))
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class FakeItem:
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def __init__(self, value):
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self.value = value
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def item(self):
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return self.value
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class FakeTensor:
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def __init__(self, values):
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self.values = values
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def __getitem__(self, item):
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if isinstance(item, tuple):
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row, col = item
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return FakeTensor(self.values[row][col])
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return FakeTensor(self.values[item])
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def cpu(self):
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return self
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def numpy(self):
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return self.values
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class FakeAllocator(ReqToMetadataIdxAllocator):
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def __init__(self):
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super().__init__(size=0)
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self.freed = []
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def free(self, free_index):
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self.freed.append(free_index)
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class TestDecodeQueueCompaction(CustomTestCase):
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def test_decode_transfer_queue_compacts_in_one_pass(self):
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streamed = []
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released = []
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committed = []
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allocator = FakeAllocator()
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queue = DecodeTransferQueue.__new__(DecodeTransferQueue)
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queue.gloo_group = None
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queue.req_to_metadata_buffer_idx_allocator = allocator
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queue.tp_rank = 0
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queue.metadata_buffers = cast(Any, object())
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queue.tree_cache = cast(Any, object())
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queue.spec_algorithm = cast(Any, SimpleNamespace(is_none=lambda: True))
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queue.scheduler = cast(
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Any,
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SimpleNamespace(
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stream_output=lambda reqs, return_logprob: streamed.extend(
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req.rid for req in reqs
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),
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enable_metrics=False,
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token_to_kv_pool_allocator=SimpleNamespace(
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get_kvcache=lambda: SimpleNamespace()
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),
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),
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)
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keep = DecodeRequest(
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req=cast(Any, FakeReq("keep", 1)),
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kv_receiver=cast(Any, FakeReceiver()),
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metadata_buffer_index=10,
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)
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success = DecodeRequest(
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req=cast(Any, FakeReq("success", 2)),
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kv_receiver=cast(Any, FakeReceiver()),
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metadata_buffer_index=11,
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)
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failed = DecodeRequest(
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req=cast(Any, FakeReq("failed", 3)),
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kv_receiver=cast(Any, FakeReceiver(should_fail=True)),
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metadata_buffer_index=12,
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)
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skipped = DecodeRequest(
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req=cast(Any, FakeReq("skip", 4)),
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kv_receiver=cast(Any, FakeReceiver()),
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metadata_buffer_index=13,
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)
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queue.queue = [keep, success, failed, skipped]
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with (
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patch(
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"sglang.srt.disaggregation.decode.poll_and_all_reduce",
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return_value=[
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KVPoll.Transferring,
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KVPoll.Success,
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KVPoll.Failed,
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KVPoll.Success,
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],
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),
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patch(
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"sglang.srt.disaggregation.decode.release_kv_cache",
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lambda req, tree_cache, is_insert=False: released.append(
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(req.rid, is_insert)
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),
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),
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):
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queue._commit_transfer_to_req = lambda decode_req: (
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committed.append(decode_req.req.rid) or True
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)
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transferred = queue.pop_transferred(
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rids_to_check=["keep", "success", "failed"]
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)
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self.assertEqual([req.rid for req in transferred], ["success"])
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self.assertEqual(committed, ["success"])
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self.assertEqual(streamed, ["failed"])
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self.assertEqual(released, [("failed", False)])
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self.assertEqual(allocator.freed, [11, 12])
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self.assertEqual(queue.queue, [keep, skipped])
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def test_decode_transfer_queue_keeps_metadata_waiters(self):
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allocator = FakeAllocator()
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queue = DecodeTransferQueue.__new__(DecodeTransferQueue)
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queue.gloo_group = None
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queue.req_to_metadata_buffer_idx_allocator = allocator
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queue.tp_rank = 0
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queue.metadata_buffers = cast(Any, object())
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queue.tree_cache = cast(Any, object())
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queue.spec_algorithm = cast(Any, SimpleNamespace(is_none=lambda: True))
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queue.scheduler = cast(
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Any,
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SimpleNamespace(
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stream_output=lambda reqs, return_logprob: None,
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enable_metrics=False,
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token_to_kv_pool_allocator=SimpleNamespace(
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get_kvcache=lambda: SimpleNamespace()
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),
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),
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)
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waiting = DecodeRequest(
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req=cast(Any, FakeReq("waiting", 1)),
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kv_receiver=cast(Any, FakeReceiver()),
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metadata_buffer_index=10,
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)
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queue.queue = [waiting]
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with patch(
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"sglang.srt.disaggregation.decode.poll_and_all_reduce",
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return_value=[KVPoll.Success],
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):
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queue._commit_transfer_to_req = lambda decode_req: False
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transferred = queue.pop_transferred()
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self.assertEqual(transferred, [])
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self.assertEqual(allocator.freed, [])
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self.assertEqual(queue.queue, [waiting])
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def test_commit_transfer_to_req_waits_for_real_metadata(self):
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queue = DecodeTransferQueue.__new__(DecodeTransferQueue)
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queue.metadata_buffers = cast(
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Any,
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SimpleNamespace(
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get_buf=lambda idx: (
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[FakeItem(0)],
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[FakeItem(0)],
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None,
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None,
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None,
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None,
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None,
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None,
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None,
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[FakeItem(0)],
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)
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),
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)
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queue.scheduler = cast(
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Any,
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SimpleNamespace(
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server_args=SimpleNamespace(disaggregation_transfer_backend="mooncake")
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),
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)
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queue.spec_algorithm = cast(Any, SimpleNamespace(is_none=lambda: True))
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receiver = FakeReceiver()
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decode_req = DecodeRequest(
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req=cast(Any, FakeReq("waiting", 3)),
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kv_receiver=cast(Any, receiver),
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metadata_buffer_index=9,
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)
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should_remove = queue._commit_transfer_to_req(decode_req)
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self.assertIs(should_remove, False)
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self.assertIs(decode_req.kv_receiver, receiver)
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self.assertEqual(receiver.clear_calls, 0)
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self.assertEqual(decode_req.req.output_ids, [])
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def test_commit_transfer_to_req_aborts_on_room_mismatch(self):
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queue = DecodeTransferQueue.__new__(DecodeTransferQueue)
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queue.metadata_buffers = cast(
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Any,
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SimpleNamespace(
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get_buf=lambda idx: (
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[FakeItem(0)],
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[FakeItem(0)],
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None,
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None,
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None,
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None,
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None,
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None,
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None,
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[FakeItem(99)],
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)
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),
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)
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queue.scheduler = cast(
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Any,
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SimpleNamespace(
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server_args=SimpleNamespace(disaggregation_transfer_backend="mooncake")
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),
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)
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queue.spec_algorithm = cast(Any, SimpleNamespace(is_none=lambda: True))
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receiver = FakeReceiver()
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decode_req = DecodeRequest(
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req=cast(Any, FakeReq("corrupt", 3)),
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kv_receiver=cast(Any, receiver),
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metadata_buffer_index=9,
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)
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aborted = []
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with patch(
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"sglang.srt.disaggregation.decode.prepare_abort",
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lambda req, message, status_code: aborted.append(
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(req.rid, message, status_code)
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),
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):
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should_remove = queue._commit_transfer_to_req(decode_req)
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self.assertIs(should_remove, True)
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self.assertEqual(receiver.clear_calls, 1)
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self.assertIsNone(decode_req.kv_receiver)
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self.assertEqual(len(aborted), 1)
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self.assertEqual(aborted[0][0], "corrupt")
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def test_resume_retracted_reqs_compacts_queue_in_one_pass(self):
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prealloc_queue = DecodePreallocQueue.__new__(DecodePreallocQueue)
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prealloc_queue.req_to_token_pool = cast(
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Any, SimpleNamespace(available_size=lambda: 1)
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)
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prealloc_queue.token_to_kv_pool_allocator = cast(Any, object())
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prealloc_queue.num_reserved_decode_tokens = 1
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prealloc_queue._allocatable_tokens = (
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lambda retractable_tokens=None, count_retracted=False: 8
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)
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prealloc_queue._pre_alloc = lambda req: setattr(req, "prealloc_done", True)
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first = FakeReq("resume", 1)
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first.origin_input_ids = [1, 2]
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first.output_ids = [3]
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skipped = FakeReq("skip", 2)
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skipped.origin_input_ids = [4]
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blocked = FakeReq("blocked", 3)
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blocked.origin_input_ids = [5, 6, 7, 8, 9, 10, 11, 12]
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prealloc_queue.retracted_queue = cast(Any, [first, skipped, blocked])
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resumed = prealloc_queue.resume_retracted_reqs(
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rids_to_check=["resume", "blocked"]
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)
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self.assertEqual(resumed, [first])
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self.assertIs(first.is_retracted, False)
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self.assertIs(first.prealloc_done, True)
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self.assertEqual(len(first.load_calls), 1)
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self.assertEqual(prealloc_queue.retracted_queue, [skipped, blocked])
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def test_pop_preallocated_still_removes_failed_reqs_after_block(self):
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streamed = []
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queue = DecodePreallocQueue.__new__(DecodePreallocQueue)
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queue._resolve_pending_reqs = lambda: None
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queue._update_handshake_waiters = lambda rids_to_check=None: None
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queue.req_to_token_pool = cast(
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Any,
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SimpleNamespace(
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available_size=lambda: 1,
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req_to_token=FakeTensor([[1, 2, 3, 4, 5, 6, 7, 8]]),
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),
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)
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queue.req_to_metadata_buffer_idx_allocator = cast(
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Any, SimpleNamespace(available_size=lambda: 1, alloc=lambda: 7)
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)
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queue.token_to_kv_pool_allocator = cast(Any, SimpleNamespace(page_size=1))
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queue.token_to_kv_pool = cast(Any, object())
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queue.num_reserved_decode_tokens = 1
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queue.scheduler = cast(
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Any,
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SimpleNamespace(
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stream_output=lambda reqs, return_logprob: streamed.extend(
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req.rid for req in reqs
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),
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enable_metrics=False,
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running_batch=SimpleNamespace(reqs=[]),
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sliding_window_size=4,
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),
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)
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queue._allocatable_tokens = (
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lambda retractable_tokens=None, count_retracted=True: 2
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)
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queue._pre_alloc = lambda req: setattr(req, "req_pool_idx", 0)
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blocked_req = FakeReq("blocked", 1)
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blocked_req.origin_input_ids = [1, 2, 3]
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blocked_req.sampling_params = SimpleNamespace(max_new_tokens=8)
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blocked = DecodeRequest(
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req=cast(Any, blocked_req),
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kv_receiver=cast(Any, FakeReceiver()),
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waiting_for_input=True,
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)
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failed_req = FakeReq("failed", 2)
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failed_req.finished_reason = FINISH_ABORT("boom")
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failed = DecodeRequest(
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req=cast(Any, failed_req),
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kv_receiver=cast(Any, FakeReceiver()),
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waiting_for_input=True,
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)
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tail = DecodeRequest(
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req=cast(Any, FakeReq("tail", 3)),
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kv_receiver=cast(Any, FakeReceiver()),
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waiting_for_input=True,
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)
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queue.queue = cast(Any, [blocked, failed, tail])
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preallocated, failed_reqs = queue.pop_preallocated(
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rids_to_check=["blocked", "failed", "tail"]
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)
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self.assertEqual(preallocated, [])
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self.assertEqual([req.req.rid for req in failed_reqs], ["failed"])
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self.assertEqual(streamed, ["failed"])
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self.assertEqual(queue.queue, [blocked, tail])
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def test_pop_preallocated_compacts_queue_in_one_pass(self):
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streamed = []
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queue = DecodePreallocQueue.__new__(DecodePreallocQueue)
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queue._resolve_pending_reqs = lambda: None
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queue._update_handshake_waiters = lambda rids_to_check=None: None
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queue.req_to_token_pool = cast(
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Any,
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SimpleNamespace(
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available_size=lambda: 1,
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req_to_token=FakeTensor([[1, 2, 3, 4, 5, 6, 7, 8]]),
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),
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)
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queue.req_to_metadata_buffer_idx_allocator = cast(
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Any, SimpleNamespace(available_size=lambda: 1, alloc=lambda: 7)
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)
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queue.token_to_kv_pool_allocator = cast(Any, SimpleNamespace(page_size=1))
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queue.token_to_kv_pool = cast(Any, object())
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queue.num_reserved_decode_tokens = 1
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queue.scheduler = cast(
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Any,
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SimpleNamespace(
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stream_output=lambda reqs, return_logprob: streamed.extend(
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req.rid for req in reqs
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),
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enable_metrics=False,
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running_batch=SimpleNamespace(reqs=[]),
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sliding_window_size=4,
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),
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)
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queue._allocatable_tokens = (
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lambda retractable_tokens=None, count_retracted=True: 6
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)
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queue._pre_alloc = lambda req: setattr(req, "req_pool_idx", 0)
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skipped = DecodeRequest(
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req=cast(Any, FakeReq("skip", 1)),
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kv_receiver=cast(Any, FakeReceiver()),
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waiting_for_input=True,
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)
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failed_req = FakeReq("failed", 2)
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failed_req.finished_reason = FINISH_ABORT("boom")
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failed = DecodeRequest(
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req=cast(Any, failed_req),
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kv_receiver=cast(Any, FakeReceiver()),
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waiting_for_input=True,
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)
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waiting = DecodeRequest(
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req=cast(Any, FakeReq("wait", 3)),
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kv_receiver=cast(Any, FakeReceiver()),
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waiting_for_input=False,
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)
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success_req = FakeReq("success", 4)
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success_req.origin_input_ids = [1, 2]
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success_req.sampling_params = SimpleNamespace(max_new_tokens=2)
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success = DecodeRequest(
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req=cast(Any, success_req),
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kv_receiver=cast(Any, FakeReceiver()),
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waiting_for_input=True,
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)
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blocked_req = FakeReq("blocked", 5)
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blocked_req.origin_input_ids = [1, 2, 3, 4, 5, 6]
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blocked_req.sampling_params = SimpleNamespace(max_new_tokens=8)
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blocked = DecodeRequest(
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req=cast(Any, blocked_req),
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kv_receiver=cast(Any, FakeReceiver()),
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waiting_for_input=True,
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)
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tail = DecodeRequest(
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req=cast(Any, FakeReq("tail", 6)),
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kv_receiver=cast(Any, FakeReceiver()),
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waiting_for_input=True,
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)
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queue.queue = cast(Any, [skipped, failed, waiting, success, blocked, tail])
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preallocated, failed_reqs = queue.pop_preallocated(
|
|
rids_to_check=["failed", "wait", "success", "blocked"]
|
|
)
|
|
|
|
self.assertEqual([req.req.rid for req in preallocated], ["success"])
|
|
self.assertEqual([req.req.rid for req in failed_reqs], ["failed"])
|
|
self.assertEqual(streamed, ["failed"])
|
|
self.assertEqual(success.metadata_buffer_index, 7)
|
|
self.assertEqual(queue.queue, [skipped, waiting, blocked, tail])
|
|
|
|
def test_get_new_prebuilt_batch_slices_waiting_queue_prefix(self):
|
|
scheduler = cast(Any, SimpleNamespace())
|
|
scheduler.grammar_manager = SimpleNamespace(
|
|
has_waiting_grammars=lambda: False,
|
|
get_ready_grammar_requests=lambda: [],
|
|
)
|
|
scheduler._add_request_to_queue = lambda req: None
|
|
scheduler.waiting_queue = [FakeReq(f"req-{i}", i) for i in range(5)]
|
|
scheduler.running_batch = SimpleNamespace(batch_size=lambda: 1)
|
|
scheduler.req_to_token_pool = SimpleNamespace(size=8)
|
|
scheduler.max_running_requests = 4
|
|
scheduler.tree_cache = object()
|
|
scheduler.token_to_kv_pool_allocator = object()
|
|
scheduler.model_config = object()
|
|
scheduler.enable_overlap = False
|
|
scheduler.spec_algorithm = object()
|
|
scheduler.server_args = object()
|
|
scheduler.future_map = object()
|
|
|
|
captured = {}
|
|
|
|
def fake_init_new(reqs, *args, **kwargs):
|
|
captured["reqs"] = list(reqs)
|
|
batch = FakeBatch()
|
|
captured["batch"] = batch
|
|
return batch
|
|
|
|
with patch(
|
|
"sglang.srt.disaggregation.decode.ScheduleBatch.init_new", fake_init_new
|
|
):
|
|
batch = SchedulerDisaggregationDecodeMixin.get_new_prebuilt_batch(scheduler)
|
|
|
|
self.assertIs(batch, captured["batch"])
|
|
self.assertEqual(
|
|
[req.rid for req in captured["reqs"]], ["req-0", "req-1", "req-2"]
|
|
)
|
|
self.assertEqual(
|
|
[req.rid for req in scheduler.waiting_queue], ["req-3", "req-4"]
|
|
)
|
|
for req in captured["reqs"]:
|
|
self.assertEqual(req.init_next_round_calls, [scheduler.tree_cache])
|
|
self.assertIsNotNone(req.time_stats.forward_entry_time)
|
|
self.assertTrue(captured["batch"].prepared)
|
|
self.assertEqual(
|
|
captured["batch"].processed,
|
|
[(scheduler.server_args, scheduler.future_map)],
|
|
)
|
|
|
|
def test_get_new_prebuilt_batch_keeps_waiting_queue_when_no_capacity(self):
|
|
scheduler = cast(Any, SimpleNamespace())
|
|
scheduler.grammar_manager = SimpleNamespace(
|
|
has_waiting_grammars=lambda: False,
|
|
get_ready_grammar_requests=lambda: [],
|
|
)
|
|
scheduler._add_request_to_queue = lambda req: None
|
|
scheduler.waiting_queue = [FakeReq(f"req-{i}", i) for i in range(3)]
|
|
scheduler.running_batch = SimpleNamespace(batch_size=lambda: 4)
|
|
scheduler.req_to_token_pool = SimpleNamespace(size=8)
|
|
scheduler.max_running_requests = 4
|
|
scheduler.tree_cache = object()
|
|
scheduler.token_to_kv_pool_allocator = object()
|
|
scheduler.model_config = object()
|
|
scheduler.enable_overlap = False
|
|
scheduler.spec_algorithm = object()
|
|
scheduler.server_args = object()
|
|
scheduler.future_map = object()
|
|
|
|
with patch(
|
|
"sglang.srt.disaggregation.decode.ScheduleBatch.init_new",
|
|
side_effect=AssertionError(
|
|
"init_new should not be called without capacity"
|
|
),
|
|
):
|
|
batch = SchedulerDisaggregationDecodeMixin.get_new_prebuilt_batch(scheduler)
|
|
|
|
self.assertIsNone(batch)
|
|
self.assertEqual(
|
|
[req.rid for req in scheduler.waiting_queue], ["req-0", "req-1", "req-2"]
|
|
)
|
|
for req in scheduler.waiting_queue:
|
|
self.assertEqual(req.init_next_round_calls, [])
|
|
|
|
|
|
if __name__ == "__main__":
|
|
unittest.main()
|