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[Feature] Prefill Context Parallel (PCP) basic support (#28718)

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Signed-off-by: QiuChunshuo <qiuchunshuo@huawei.com>
Signed-off-by: FENP <yuanyongjie.yyj@antgroup.com>
Signed-off-by: LookAround <lixushi@huawei.com>
Signed-off-by: Jingchun Gao <gaojingchun1@huawei.com>
Signed-off-by: zhenwenqi2024 <zhenwenqi_2022@qq.com>
Co-authored-by: FENP <yuanyongjie.yyj@antgroup.com>
Co-authored-by: LookAround <lixushi@huawei.com>
Co-authored-by: Jingchun Gao <gaojingchun1@huawei.com>
Co-authored-by: zhenwenqi2024 <zhenwenqi_2022@qq.com>
Co-authored-by: Jingchun Gao <63247409+gjc0824@users.noreply.github.com>
This commit is contained in:
Qiu
2025-11-20 04:52:44 +08:00
committed by GitHub
parent 02f5903b84
commit 2fd893b4ce
27 changed files with 399 additions and 114 deletions
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2
vllm/v1/core/sched/scheduler.py
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@@ -121,6 +121,7 @@ class Scheduler(SchedulerInterface):
self.block_size = block_size
self.dcp_world_size = vllm_config.parallel_config.decode_context_parallel_size
self.pcp_world_size = vllm_config.parallel_config.prefill_context_parallel_size
# req_id -> Request
self.requests: dict[str, Request] = {}
@@ -183,6 +184,7 @@ class Scheduler(SchedulerInterface):
log_stats=self.log_stats,
enable_kv_cache_events=self.enable_kv_cache_events,
dcp_world_size=self.dcp_world_size,
pcp_world_size=self.pcp_world_size,
)
self.use_pp = self.parallel_config.pipeline_parallel_size > 1