Merge remote-tracking branch 'origin/v0.9.2-dev-yql_1.6' into v0.9.2-dev

vllm/distributed/device_communicators/all2all.py

@@ -194,6 +194,7 @@ class DeepEPHTAll2AllManager(DeepEPAll2AllManagerBase):
                     num_rdma_bytes=num_rdma_bytes,
                     low_latency_mode=False,
                     num_qps_per_rank=num_qps_per_rank,
+                    allow_mnnvl=envs.VLLM_ALLOW_MNNVL,
                     explicitly_destroy=False)
 
     def get_handle(self, kwargs):
@@ -256,6 +257,7 @@ class DeepEPLLAll2AllManager(DeepEPAll2AllManagerBase):
                     num_rdma_bytes=num_rdma_bytes,
                     low_latency_mode=True,
                     num_qps_per_rank=num_qps_per_rank,
+                    allow_mnnvl=envs.VLLM_ALLOW_MNNVL,
                     )
 
     def get_handle(self, kwargs):
@@ -274,3 +276,56 @@ class DeepEPLLAll2AllManager(DeepEPAll2AllManagerBase):
         # in get_or_create must be updated.
         handle.set_num_sms(self.num_sms)
         return handle
+
+
+class DeepEPAutoAll2AllManager(All2AllManagerBase):
+    """
+    Simplified auto manager that always builds handles through the
+    low-latency DeepEP manager. This avoids creating multiple buffer
+    instances and mirrors the sglang behavior of relying on LL buffers.
+    """
+
+    def __init__(self, cpu_group):
+        super().__init__(cpu_group)
+        self.ll_manager = DeepEPLLAll2AllManager(cpu_group)
+        self.ht_manager = DeepEPHTAll2AllManager(cpu_group)
+    def get_handle(self, kwargs):
+        """
+        Build a DeepEP Buffer using LL args but sized to the larger of HT/LL
+        requirements (max of num_nvl_bytes/num_rdma_bytes).
+        """
+        import deep_ep
+
+        kwargs = dict(kwargs)
+        
+        # Build canonical kwargs for each path.
+        ll_kwargs = self.ll_manager._make_all2all_kwargs(**kwargs)
+        ht_kwargs = self.ht_manager._make_all2all_kwargs()
+
+        # Take the max for buffer sizes to be compatible with both modes.
+        merged_kwargs = dict(ll_kwargs)
+        merged_kwargs["num_nvl_bytes"] = max(ll_kwargs["num_nvl_bytes"],
+                                             ht_kwargs["num_nvl_bytes"])
+        merged_kwargs["num_rdma_bytes"] = max(ll_kwargs["num_rdma_bytes"],
+                                              ht_kwargs["num_rdma_bytes"])
+
+        logger.debug("DeepEP auto merged args %s", merged_kwargs)
+        handle: deep_ep.Buffer = self.ll_manager.handle_cache.get_or_create(
+            merged_kwargs, deep_ep.Buffer)
+        handle.set_num_sms(self.ll_manager.num_sms)
+        return handle
+
+    def dispatch(self, hidden_states: torch.Tensor,
+                 router_logits: torch.Tensor):
+        raise NotImplementedError(
+            "DeepEPAutoAll2AllManager does not support dispatch directly; "
+            "use the underlying HT/LL managers.")
+
+    def combine(self, hidden_states: torch.Tensor) -> torch.Tensor:
+        raise NotImplementedError(
+            "DeepEPAutoAll2AllManager does not support combine directly; "
+            "use the underlying HT/LL managers.")
+
+    def destroy(self):
+        self.ll_manager.destroy()
+

vllm/distributed/device_communicators/cuda_communicator.py

@@ -88,6 +88,10 @@ class CudaCommunicator(DeviceCommunicatorBase):
                 from .all2all import DeepEPLLAll2AllManager
                 self.all2all_manager = DeepEPLLAll2AllManager(self.cpu_group)
                 logger.info("Using DeepEP Low-Latency all2all manager.")
+            elif all2all_backend == "deepep_auto":
+                from .all2all import DeepEPAutoAll2AllManager
+                self.all2all_manager = DeepEPAutoAll2AllManager(self.cpu_group)
+                logger.info("Using DeepEP Auto all2all manager.")
             else:
                 raise ValueError(f"Unknown all2all backend: {all2all_backend}")
 

vllm/envs.py

@@ -129,6 +129,8 @@ if TYPE_CHECKING:
     VLLM_NIXL_SIDE_CHANNEL_HOST: str = "localhost"
     VLLM_NIXL_SIDE_CHANNEL_PORT: int = 5557
     VLLM_ALL2ALL_BACKEND: str = "naive"
+    VLLM_MOE_HT_THRESHOLD: int = 128
+    VLLM_ALLOW_MNNVL: bool = False
     VLLM_MAX_TOKENS_PER_EXPERT_FP4_MOE: int = 163840
     VLLM_TOOL_PARSE_REGEX_TIMEOUT_SECONDS: int = 1
     VLLM_SLEEP_WHEN_IDLE: bool = False
@@ -980,6 +982,14 @@ environment_variables: dict[str, Callable[[], Any]] = {
     # - "deepep_low_latency", use deepep low-latency kernels
     "VLLM_ALL2ALL_BACKEND":
     lambda: os.getenv("VLLM_ALL2ALL_BACKEND", "naive"),
+    
+    # VLLM_MOE_HT_THRESHOLD
+    "VLLM_MOE_HT_THRESHOLD":
+    lambda: int(os.getenv("VLLM_MOE_HT_THRESHOLD", "128")),
+    # use ALLOW_MNNVL
+    "VLLM_ALLOW_MNNVL":
+    lambda: (os.environ.get("VLLM_ALLOW_MNNVL", "False").lower() in
+             ("true", "1")),
 
     # Control the maximum number of tokens per expert supported by the
     # NVFP4 MoE CUTLASS Kernel. This value is used to create a buffer for

vllm/model_executor/layers/fused_moe/config.py

@@ -187,6 +187,11 @@ class FusedMoEParallelConfig:
         return (self.use_all2all_kernels
                 and envs.VLLM_ALL2ALL_BACKEND == "deepep_low_latency")
 
+    @property
+    def use_deepep_auto_kernels(self):
+        return (self.use_all2all_kernels
+                and envs.VLLM_ALL2ALL_BACKEND == "deepep_auto")
+
     @staticmethod
     def make(tp_size_: int, dp_size_: int,
              vllm_parallel_config: ParallelConfig) -> "FusedMoEParallelConfig":
@@ -385,6 +390,10 @@ class FusedMoEConfig:
     def use_deepep_ll_kernels(self):
         return self.moe_parallel_config.use_deepep_ll_kernels
 
+    @property
+    def use_deepep_auto_kernels(self):
+        return self.moe_parallel_config.use_deepep_auto_kernels
+
     @staticmethod
     def make(
         num_experts: int,

vllm/model_executor/layers/fused_moe/deepep_auto_prepare_finalize.py

+# SPDX-License-Identifier: Apache-2.0
+# SPDX-FileCopyrightText: Copyright contributors to the vLLM project
+from typing import Optional
+
+import torch
+
+import vllm.model_executor.layers.fused_moe.modular_kernel as mk
+from vllm.model_executor.layers.fused_moe.config import FusedMoEQuantConfig
+from vllm.forward_context import get_forward_context
+
+
+class DeepEPAutoPrepareAndFinalize(mk.FusedMoEPrepareAndFinalize):
+    """
+    Auto Prepare/Finalize that wraps both DeepEP High-Throughput and
+    Low-Latency implementations and selects one based on prefill/decode phase.
+    """
+
+    def __init__(self,
+                 ht_prepare_finalize: mk.FusedMoEPrepareAndFinalize,
+                 ll_prepare_finalize: mk.FusedMoEPrepareAndFinalize):
+        super().__init__()
+        self.ht_prepare_finalize = ht_prepare_finalize
+        self.ll_prepare_finalize = ll_prepare_finalize
+        self._current_phase = "decode"  # default to decode (LL)
+
+    def _get_current_prepare_finalize(self) -> mk.FusedMoEPrepareAndFinalize:
+        """Get the appropriate prepare_finalize based on current phase."""
+        # Try to infer phase from forward_context if available:
+        # try:
+        #     forward_context = get_forward_context()
+        #     attn_metadata = forward_context.attn_metadata
+        #     # Handle both v0 (single AttentionMetadata) and v1 (dict) formats
+        #     if isinstance(attn_metadata, dict):
+        #         if attn_metadata:
+        #             attn_metadata = next(iter(attn_metadata.values()))
+        #         else:
+        #             attn_metadata = None
+            
+        #     if attn_metadata is not None and hasattr(attn_metadata,
+        #                                              "num_decode_tokens"):
+        #         # 只根据 decode tokens 判定：有 decode -> decode，否则 prefill
+        #         self._current_phase = ("decode"
+        #                                if attn_metadata.num_decode_tokens > 0
+        #                                else "prefill")
+        # except Exception:
+        #     # If forward_context is not available, use stored phase
+        #     pass
+
+        # Prefill uses HT, decode uses LL
+        if self._current_phase == "prefill":
+            #rint("************prefill***********")
+            return self.ll_prepare_finalize
+        else:
+            # print("attn_metadata.num_decode_tokens",attn_metadata.num_decode_tokens)
+            return self.ht_prepare_finalize
+        #return self.ht_prepare_finalize
+    @property
+    def activation_format(self) -> mk.FusedMoEActivationFormat:
+        pf = self._get_current_prepare_finalize()
+        try:
+            return pf.activation_format
+        except NotImplementedError:
+            # Fallback to standard format if underlying impl does not provide it.
+            return mk.FusedMoEActivationFormat.Standard
+
+    def topk_indices_dtype(self) -> Optional[torch.dtype]:
+        pf = self._get_current_prepare_finalize()
+        return pf.topk_indices_dtype()
+
+    def max_num_tokens_per_rank(self) -> Optional[int]:
+        pf = self._get_current_prepare_finalize()
+        return pf.max_num_tokens_per_rank()
+
+    def num_dispatchers(self) -> int:
+        pf = self._get_current_prepare_finalize()
+        return pf.num_dispatchers()
+
+    def prepare_async(
+        self,
+        a1: torch.Tensor,
+        a1_scale: Optional[torch.Tensor],
+        a2_scale: Optional[torch.Tensor],
+        topk_weights: torch.Tensor,
+        topk_ids: torch.Tensor,
+        num_experts: int,
+        expert_map: Optional[torch.Tensor],
+        apply_router_weight_on_input: bool,
+        quant_config: FusedMoEQuantConfig,
+    ):
+        pf = self._get_current_prepare_finalize()
+        return pf.prepare_async(
+            a1, a1_scale, a2_scale, topk_weights, topk_ids,
+            num_experts, expert_map, apply_router_weight_on_input, quant_config)
+
+    def prepare(
+        self,
+        a1: torch.Tensor,
+        a1_scale: Optional[torch.Tensor],
+        a2_scale: Optional[torch.Tensor],
+        topk_weights: torch.Tensor,
+        topk_ids: torch.Tensor,
+        num_experts: int,
+        expert_map: Optional[torch.Tensor],
+        apply_router_weight_on_input: bool,
+        quant_config: FusedMoEQuantConfig,
+    ) -> tuple[torch.Tensor, Optional[torch.Tensor], Optional[torch.Tensor],
+               Optional[torch.Tensor], Optional[torch.Tensor]]:
+        pf = self._get_current_prepare_finalize()
+        return pf.prepare(
+            a1, a1_scale, a2_scale, topk_weights, topk_ids,
+            num_experts, expert_map, apply_router_weight_on_input, quant_config)
+
+    def finalize(
+        self,
+        output: torch.Tensor,
+        fused_expert_output: torch.Tensor,
+        topk_weights: torch.Tensor,
+        topk_ids: torch.Tensor,
+        apply_router_weight_on_input: bool,
+        apply_weights_and_reduce: bool = True
+    ) -> None:
+        pf = self._get_current_prepare_finalize()
+        return pf.finalize(
+            output, fused_expert_output, topk_weights, topk_ids,
+            apply_router_weight_on_input, apply_weights_and_reduce)
+
+    def finalize_async(
+        self,
+        output: torch.Tensor,
+        fused_expert_output: torch.Tensor,
+        topk_weights: torch.Tensor,
+        topk_ids: torch.Tensor,
+        apply_router_weight_on_input: bool,
+        apply_weights_and_reduce: bool = True
+    ):
+        pf = self._get_current_prepare_finalize()
+        if hasattr(pf, "finalize_async"):
+            return pf.finalize_async(
+                output, fused_expert_output, topk_weights, topk_ids,
+                apply_router_weight_on_input, apply_weights_and_reduce)
+        return pf.finalize(
+            output, fused_expert_output, topk_weights, topk_ids,
+            apply_router_weight_on_input, apply_weights_and_reduce)

vllm/model_executor/layers/fused_moe/layer.py

@@ -55,6 +55,7 @@ if current_platform.is_cuda_alike():
         from .deepep_ht_prepare_finalize import DeepEPHTPrepareAndFinalize
         from .deepep_ll_prepare_finalize import (DEEPEP_QUANT_BLOCK_SHAPE,
                                                  DeepEPLLPrepareAndFinalize)
+        from .deepep_auto_prepare_finalize import DeepEPAutoPrepareAndFinalize
 else:
     fused_experts = None  # type: ignore
     FusedMoEPermuteExpertsUnpermute = None  # type: ignore
@@ -160,6 +161,62 @@ class FusedMoEMethodBase(QuantizeMethodBase):
                 num_local_experts=moe.num_local_experts,
                 num_dispatchers=num_dispatchers,
             )
+        elif moe.use_deepep_auto_kernels:
+            # Initialize both HT and LL prepare_finalize but reuse the single
+            # LL handle for both (sglang-style single handle)
+            assert moe.dp_size == all2all_manager.dp_world_size
+
+            ll_all_to_all_args = dict(
+                max_num_tokens_per_dp_rank=moe.max_num_tokens,
+                token_hidden_size=moe.hidden_dim,
+                num_ep_ranks=all2all_manager.world_size,
+                num_global_experts=moe.num_experts,
+                num_local_experts=moe.num_experts //
+                all2all_manager.world_size,
+            )
+            ll_handle = all2all_manager.get_handle(ll_all_to_all_args)
+           
+            # HT prepare/finalize built on the same LL handle per request
+            ht_prepare_finalize = DeepEPHTPrepareAndFinalize(
+                ll_handle,
+                num_dispatchers=all2all_manager.world_size,
+                dp_size=all2all_manager.dp_world_size,
+                rank_expert_offset=all2all_manager.rank *
+                moe.num_local_experts,
+            )
+
+            use_fp8_dispatch = (moe.quant_config is not None
+                                and moe.quant_config.quant_dtype
+                                == current_platform.fp8_dtype()
+                                and moe.quant_config.block_shape
+                                == DEEPEP_QUANT_BLOCK_SHAPE)
+
+            use_int8_dispatch = False
+
+            ll_prepare_finalize = DeepEPLLPrepareAndFinalize(
+                ll_handle,
+                max_tokens_per_rank=moe.max_num_tokens,
+                num_dispatchers=all2all_manager.world_size,
+                use_fp8_dispatch=use_fp8_dispatch,
+                use_int8_dispatch=use_int8_dispatch,
+            )
+
+            prepare_finalize = DeepEPAutoPrepareAndFinalize(
+                ht_prepare_finalize, ll_prepare_finalize)
+            
+            experts_ht = self.select_gemm_impl(ht_prepare_finalize, moe)
+            experts_ll = self.select_gemm_impl(ll_prepare_finalize, moe)            
+            
+            self.topk_indices_dtype = ll_prepare_finalize.topk_indices_dtype()
+            self.fused_experts = DeepGemmDisabledFusedMoEModularKernel(
+                prepare_finalize,
+                experts_ll,
+                experts_ht=experts_ht,
+                experts_ll=experts_ll,
+                shared_experts=layer.shared_experts if hasattr(layer, "shared_experts") else None,
+            )        
+            return
+        
         elif moe.use_deepep_ht_kernels:
             assert moe.dp_size == all2all_manager.dp_world_size
 
@@ -893,7 +950,7 @@ class FusedMoE(torch.nn.Module):
         self.batched_hidden_states: Optional[torch.Tensor] = None
         self.batched_router_logits: Optional[torch.Tensor] = None
         if (self.moe_parallel_config.use_pplx_kernels
-                or self.moe_parallel_config.use_deepep_ll_kernels):
+                or self.moe_parallel_config.use_deepep_ll_kernels or self.moe_parallel_config.use_deepep_auto_kernels):
             self.batched_hidden_states = torch.zeros(
                 (moe.max_num_tokens, self.hidden_size),
                 dtype=moe.in_dtype,
@@ -945,6 +1002,10 @@ class FusedMoE(torch.nn.Module):
     def use_deepep_ll_kernels(self):
         return self.moe_parallel_config.use_deepep_ll_kernels
 
+    @property
+    def use_deepep_auto_kernels(self):
+        return self.moe_parallel_config.use_deepep_auto_kernels
+
     @property
     def shared_experts(self) -> torch.nn.Module | None:
         return None
@@ -1471,7 +1532,7 @@ class FusedMoE(torch.nn.Module):
         early.
         """
         return (self.use_pplx_kernels or self.use_deepep_ht_kernels
-                or self.use_deepep_ll_kernels)
+                or self.use_deepep_ll_kernels or self.use_deepep_auto_kernels)
 
     def maybe_all_reduce_tensor_model_parallel(
             self, final_hidden_states: torch.Tensor):
@@ -1479,7 +1540,7 @@ class FusedMoE(torch.nn.Module):
         The pplx combine kernel reduces across GPU ranks by default.
         """
         if (self.use_pplx_kernels or self.use_deepep_ht_kernels
-                or self.use_deepep_ll_kernels):
+                or self.use_deepep_ll_kernels or self.use_deepep_auto_kernels):
             return final_hidden_states
         else:
             return tensor_model_parallel_all_reduce(final_hidden_states)
@@ -1606,7 +1667,9 @@ class FusedMoE(torch.nn.Module):
         do_naive_dispatch_combine: bool = (
             self.dp_size > 1
             and not self.moe_parallel_config.use_deepep_ht_kernels
-            and not self.moe_parallel_config.use_deepep_ll_kernels)
+            and not self.moe_parallel_config.use_deepep_ll_kernels
+            and not self.moe_parallel_config.use_deepep_auto_kernels
+            )
         if do_naive_dispatch_combine:
             hidden_states, router_logits = get_ep_group().dispatch(
                 hidden_states, router_logits)

vllm/model_executor/layers/fused_moe/modular_kernel.py

@@ -6,7 +6,9 @@ from math import prod
 from typing import Optional, final
 from dataclasses import dataclass
 from collections.abc import Callable
+from vllm.logger import init_logger
 
+logger = init_logger(__name__)
 import torch
 
 import vllm.envs as envs
@@ -843,11 +845,16 @@ class DeepGemmDisabledFusedMoEModularKernel(torch.nn.Module):
         self,
         prepare_finalize: FusedMoEPrepareAndFinalize,
         fused_experts: CustomizedFusedMoEPermuteExpertsUnpermute,
+        experts_ht: CustomizedFusedMoEPermuteExpertsUnpermute = None,
+        experts_ll: CustomizedFusedMoEPermuteExpertsUnpermute = None,
         shared_experts: Optional[torch.nn.Module] = None,
     ):
         super().__init__()
         self.prepare_finalize = prepare_finalize
         self.fused_experts = fused_experts
+        
+        self.fused_experts_ht = experts_ht
+        self.fused_experts_ll = experts_ll
         self.shared_experts = shared_experts
 
         if self.shared_experts is not None:
@@ -919,7 +926,21 @@ class DeepGemmDisabledFusedMoEModularKernel(torch.nn.Module):
         Returns:
         - torch.Tensor: The output tensor after applying the MoE layer.
         """
-
+        prepare_finalize = self.prepare_finalize
+        fused_experts = self.fused_experts
+
+        if envs.VLLM_ALL2ALL_BACKEND == "deepep_auto":
+           
+            num_ht_ll_tokens = envs.VLLM_MOE_HT_THRESHOLD
+            num_tokens = hidden_states.size(0)
+            # logger.info("num_tokens=%d", num_tokens)
+            if num_tokens > num_ht_ll_tokens:
+                
+                prepare_finalize = self.prepare_finalize.ht_prepare_finalize
+                fused_experts = self.fused_experts_ht
+            else:
+                prepare_finalize = self.prepare_finalize.ll_prepare_finalize
+                fused_experts = self.fused_experts_ll
         a1 = hidden_states
       
         if inplace and self.shared_experts is None:
@@ -931,7 +952,7 @@ class DeepGemmDisabledFusedMoEModularKernel(torch.nn.Module):
         if global_num_experts == -1:
             global_num_experts = local_num_experts
 
-        prepare_ret = self.prepare_finalize.prepare_async(
+        prepare_ret = prepare_finalize.prepare_async(
                 a1,
                 a1_scale,
                 a2_scale,
@@ -940,7 +961,7 @@ class DeepGemmDisabledFusedMoEModularKernel(torch.nn.Module):
                 global_num_experts,
                 expert_map,
                 apply_router_weight_on_input,
-                self.fused_experts.quant_config,
+                fused_experts.quant_config,
             )
         hook, receiver = (
             prepare_ret if isinstance(prepare_ret, tuple) else (None, prepare_ret)
@@ -971,7 +992,7 @@ class DeepGemmDisabledFusedMoEModularKernel(torch.nn.Module):
             # and can never run into the tensor.numel() == 0 case.
             fused_out = torch.empty_like(a1q).to(dtype=a1.dtype)
         else:
-            fused_out = self.fused_experts.apply(
+            fused_out = fused_experts.apply(
                             None,
                             a1,
                             a1q,
@@ -1008,12 +1029,12 @@ class DeepGemmDisabledFusedMoEModularKernel(torch.nn.Module):
           self.alt_stream.wait_event(self.alt_event)
 
           hook = None
-          if self.prepare_finalize.activation_format == \
+          if prepare_finalize.activation_format == \
                 FusedMoEActivationFormat.BatchedExperts:
-            self.prepare_finalize.finalize(output, fused_out, topk_weights,
+            prepare_finalize.finalize(output, fused_out, topk_weights,
                                             topk_ids, apply_router_weight_on_input, apply_weights_and_reduce=True)
           else:
-            hook = self.prepare_finalize.finalize_async(output, fused_out, topk_weights,
+            hook = prepare_finalize.finalize_async(output, fused_out, topk_weights,
                                             topk_ids, apply_router_weight_on_input, apply_weights_and_reduce=True)
           if hook is not None:
             hook()

vllm/model_executor/layers/quantization/compressed_tensors/compressed_tensors_moe_marlin.py

@@ -90,7 +90,8 @@ class CompressedTensorsW8A8Int8MarlinMoEMethod(CompressedTensorsMarlinMoEMethod)
         self.ep_size = get_ep_group().world_size
         self.use_deepep = self.dp_size > 1 and parallel_config.enable_expert_parallel and \
             (envs.VLLM_ALL2ALL_BACKEND == "deepep_high_throughput" or \
-             envs.VLLM_ALL2ALL_BACKEND == "deepep_low_latency")
+             envs.VLLM_ALL2ALL_BACKEND == "deepep_low_latency" or \
+             envs.VLLM_ALL2ALL_BACKEND == "deepep_auto")
         
         self.use_deepgemm = False
         if self.use_deepep:
@@ -98,7 +99,7 @@ class CompressedTensorsW8A8Int8MarlinMoEMethod(CompressedTensorsMarlinMoEMethod)
             assert all2all_manager is not None
             self.num_dispatchers = all2all_manager.world_size
             self.block_shape = [256, 256]
-            self.use_deepgemm = envs.VLLM_ALL2ALL_BACKEND == "deepep_low_latency" or envs.VLLM_ENABLE_DEEPEP_HT_DEEPGEMM
+            self.use_deepgemm = envs.VLLM_ALL2ALL_BACKEND == "deepep_low_latency" or envs.VLLM_ENABLE_DEEPEP_HT_DEEPGEMM or envs.VLLM_ALL2ALL_BACKEND == "deepep_auto"
 
         
     def create_weights(self, layer: torch.nn.Module, num_experts: int,

vllm/model_executor/models/deepseek_v2.py

@@ -184,7 +184,8 @@ class DeepseekV2MoE(nn.Module):
         self.enable_expert_parallel = parallel_config.enable_expert_parallel
         self.use_deepep = dp_size > 1 and parallel_config.enable_expert_parallel and \
             (envs.VLLM_ALL2ALL_BACKEND == "deepep_high_throughput" or \
-             envs.VLLM_ALL2ALL_BACKEND == "deepep_low_latency")
+             envs.VLLM_ALL2ALL_BACKEND == "deepep_low_latency" or \
+             envs.VLLM_ALL2ALL_BACKEND == "deepep_auto")
         
         self.enable_shared_experts_overlap = False
         if not self.use_deepep:
@@ -971,7 +972,8 @@ class DeepseekV2DecoderLayer(nn.Module):
         parallel_config = vllm_config.parallel_config
         self.use_deepep = self.dp_size > 1 and parallel_config.enable_expert_parallel and \
             (envs.VLLM_ALL2ALL_BACKEND == "deepep_high_throughput" or \
-             envs.VLLM_ALL2ALL_BACKEND == "deepep_low_latency")
+             envs.VLLM_ALL2ALL_BACKEND == "deepep_low_latency" or \
+             envs.VLLM_ALL2ALL_BACKEND == "deepep_auto")
         self.tp_size = get_tensor_model_parallel_world_size()
         self.config = config
         self.tp_rank = get_tensor_model_parallel_rank()
@@ -1277,7 +1279,8 @@ class DeepseekV2Model(nn.Module):
         parallel_config = vllm_config.parallel_config
         self.use_deepep = self.dp_size > 1 and parallel_config.enable_expert_parallel and \
             (envs.VLLM_ALL2ALL_BACKEND == "deepep_high_throughput" or \
-             envs.VLLM_ALL2ALL_BACKEND == "deepep_low_latency")
+             envs.VLLM_ALL2ALL_BACKEND == "deepep_low_latency" or \
+             envs.VLLM_ALL2ALL_BACKEND == "deepep_auto")
         self.tp_size = get_tensor_model_parallel_world_size()
 
     def get_input_embeddings(self, input_ids: torch.Tensor) -> torch.Tensor:

vllm/v1/spec_decode/eagle.py

@@ -12,8 +12,9 @@ from vllm.attention.layer import Attention
 from vllm.config import (CompilationLevel, VllmConfig,
                          get_layers_from_vllm_config)
 from vllm.distributed.parallel_state import get_pp_group
-from vllm.forward_context import set_forward_context
+from vllm.forward_context import DPMetadata, set_forward_context
 from vllm.logger import init_logger
+import vllm.envs as envs
 from vllm.model_executor.model_loader import get_model
 from vllm.model_executor.models import supports_multimodal
 from vllm.model_executor.models.llama_eagle3 import Eagle3LlamaForCausalLM
@@ -187,7 +188,10 @@ class EagleProposer:
             num_input_tokens = self.vllm_config.pad_for_cudagraph(num_tokens)
         else:
             num_input_tokens = num_tokens
+        
 
+        num_pad, num_tokens_across_dp = self.get_dp_padding(num_input_tokens)
+        num_input_tokens += num_pad
         # copy inputs to buffer for cudagraph
         self.positions[:num_tokens] = target_positions
         self.hidden_states[:num_tokens] = target_hidden_states
@@ -516,6 +520,40 @@ class EagleProposer:
             logger.info("Loading EAGLE LM head weights from the target model.")
             self.model.lm_head = target_language_model.lm_head
 
+    def get_dp_padding(self,
+                       num_tokens: int) -> tuple[int, Optional[torch.Tensor]]:
+        dp_size = self.vllm_config.parallel_config.data_parallel_size
+        dp_rank = self.vllm_config.parallel_config.data_parallel_rank
+
+        # For DP: Don't pad when setting enforce_eager.
+        # This lets us set enforce_eager on the prefiller in a P/D setup and
+        # still use CUDA graphs (enabled by this padding) on the decoder.
+        #
+        # TODO(tms) : There are many cases where padding is enabled for
+        # prefills, causing unnecessary and excessive padding of activations.
+
+        if dp_size == 1 or self.vllm_config.model_config.enforce_eager or envs.VLLM_ALL2ALL_BACKEND != 'naive':
+            # auto 
+            if not envs.VLLM_ALL2ALL_BACKEND == "deepep_auto":
+                # Early exit.
+                return 0, None
+
+        try:
+            num_tokens_across_dp = DPMetadata.num_tokens_across_dp(
+                num_tokens, dp_size, dp_rank)
+            max_tokens_across_dp_cpu = torch.max(num_tokens_across_dp).item()
+            num_tokens_after_padding = torch.tensor([max_tokens_across_dp_cpu] *
+                                                    dp_size,
+                                                    device="cpu",
+                                                    dtype=torch.int32)
+            return max_tokens_across_dp_cpu - num_tokens, num_tokens_after_padding
+        except (RuntimeError, AttributeError) as e:
+            # DP group may not be initialized yet during dummy run
+            # Skip padding in this case
+            logger.debug(
+                "Skipping DP padding in eagle get_dp_padding due to: %s", e)
+            return 0, None
+
     @torch.inference_mode()
     def dummy_run(
         self,
@@ -525,16 +563,23 @@ class EagleProposer:
         if attn_metadata is not None and self.attn_metadata_cudagraph is None:
             self.attn_metadata_cudagraph = attn_metadata[
                 self.attn_layer_names[0]]
+        
+        # Padding for DP
+        num_input_tokens = num_tokens
+        num_pad, num_tokens_across_dp = self.get_dp_padding(num_tokens)
+        num_input_tokens += num_pad
+        
         with set_forward_context(attn_metadata,
                                  self.vllm_config,
                                  num_tokens=num_tokens):
             self.model(
-                self.input_ids[:num_tokens],
-                self.positions[:num_tokens],
-                self.hidden_states[:num_tokens],
+                self.input_ids[:num_input_tokens],
+                self.positions[:num_input_tokens],
+                self.hidden_states[:num_input_tokens],
             )
 
         if self.dp_size > 1 and self.enable_expert_parallel and self.num_speculative_tokens > 1:
+            num_token = 1
             for _ in range(self.num_speculative_tokens - 1):
                 with set_forward_context(attn_metadata,
                                  self.vllm_config,

vllm/v1/worker/gpu_model_runner.py

@@ -1275,9 +1275,12 @@ class GPUModelRunnerBase(LoRAModelRunnerMixin):
         # TODO(tms) : There are many cases where padding is enabled for
         # prefills, causing unnecessary and excessive padding of activations.
 
-        if dp_size == 1 or self.vllm_config.model_config.enforce_eager or envs.VLLM_ALL2ALL_BACKEND != 'naive':
-            # Early exit.
-            return 0, None
+        if dp_size == 1 or self.vllm_config.model_config.enforce_eager:
+            # auto 
+            if not envs.VLLM_ALL2ALL_BACKEND == "deepep_auto":
+                # Early exit.
+                return 0, None
+
 
         num_tokens_across_dp = DPMetadata.num_tokens_across_dp(
             num_tokens, dp_size, dp_rank)

vllm/zero_overhead/v1/eagle.py

@@ -112,6 +112,9 @@ class V1ZeroEagleProposer(EagleProposer):
         else:
             num_input_tokens = num_tokens
 
+        num_pad, num_tokens_across_dp = self.get_dp_padding(num_input_tokens)
+        num_input_tokens += num_pad
+
         # copy inputs to buffer for cudagraph
         self.positions[:num_tokens] = target_positions
         self.hidden_states[:num_tokens] = target_hidden_states