[V1][BUGFIX][0.10.1] FIX mtp on main branch (#2632)

### What this PR does / why we need it?
Fix MTP torchair bug caused by torchair refactor and moe refactor

Depends on PRs:
fused moe fix: https://github.com/vllm-project/vllm-ascend/pull/2627 
torchair multi DP fix:
https://github.com/vllm-project/vllm-ascend/pull/2626

### Does this PR introduce _any_ user-facing change?
when dp is enabled, to run mtp online server, need to disable server log
due to the current metrics does not support multi dp
`--disable-log-stats`
### How was this patch tested?


- vLLM version: v0.10.1.1
- vLLM main:
7c8271cd1e

Signed-off-by: xuyexiong <xuyexiong@huawei.com>

tests/e2e/singlecard/spec_decode_v1/test_v1_mtp_torchair_correctness.py

@@ -0,0 +1,90 @@
+from __future__ import annotations
+
+import os
+
+import pytest
+from vllm import SamplingParams
+
+from tests.e2e.conftest import VllmRunner
+from vllm_ascend.ascend_config import clear_ascend_config
+
+os.environ["VLLM_WORKER_MULTIPROC_METHOD"] = "spawn"
+
+
+@pytest.fixture
+def sampling_config():
+    return SamplingParams(temperature=0, max_tokens=256, ignore_eos=False)
+
+
+@pytest.fixture
+def model_name():
+    return "wemaster/deepseek_mtp_main_random_bf16"
+
+
+def test_mtp_torchair_correctness(
+    sampling_config: SamplingParams,
+    model_name: str,
+):
+    example_prompts = [
+        "Hello, my name is",
+        "The president of the United States is",
+        "The capital of France is",
+        "The future of AI is",
+    ]
+    '''
+    Compare the outputs of a original LLM and a speculative LLM
+    should be the same when using mtp speculative decoding.
+    '''
+    clear_ascend_config()
+    with VllmRunner(model_name,
+                    tensor_parallel_size=1,
+                    gpu_memory_utilization=0.7,
+                    max_model_len=256,
+                    enforce_eager=False,
+                    additional_config={
+                        "torchair_graph_config": {
+                            "enabled": True,
+                            "use_cached_graph": False,
+                            "graph_batch_sizes": [1, 2, 4],
+                        },
+                    }) as ref_llm:
+        ref_outputs = ref_llm.generate(example_prompts, sampling_config)
+    clear_ascend_config()
+    with VllmRunner(model_name,
+                    tensor_parallel_size=1,
+                    max_num_seqs=256,
+                    gpu_memory_utilization=0.7,
+                    distributed_executor_backend="mp",
+                    enable_expert_parallel=True,
+                    speculative_config={
+                        "method": "deepseek_mtp",
+                        "num_speculative_tokens": 1,
+                    },
+                    enforce_eager=False,
+                    max_model_len=2000,
+                    additional_config={
+                        "torchair_graph_config": {
+                            "enabled": True,
+                            "use_cached_graph": False,
+                            "graph_batch_sizes": [1, 2, 4],
+                        }
+                    }) as spec_llm:
+        spec_outputs = spec_llm.generate(example_prompts, sampling_config)
+
+    matches = 0
+    misses = 0
+    for ref_output, spec_output in zip(ref_outputs, spec_outputs):
+        ref_token_ids = ref_output[0][0]
+        spec_token_ids = spec_output[0][0]
+        if ref_token_ids == spec_token_ids[:len(ref_token_ids)]:
+            matches += 1
+        else:
+            misses += 1
+            print(f"ref_output: {ref_output[1][0]}")
+            print(f"spec_output: {spec_output[1][0]}")
+
+    # Heuristic: expect at least 66% of the prompts to match exactly
+    # Upon failure, inspect the outputs to check for inaccuracy.
+    assert matches > int(0.66 * len(ref_outputs))
+    del spec_llm
+    clear_ascend_config()

tests/ut/torchair/ops/test_torchair_fused_moe.py

@@ -23,6 +23,8 @@ from pytest_mock import MockerFixture
 from vllm.model_executor.layers.fused_moe import FusedMoEMethodBase
 
 from vllm_ascend.ascend_forward_context import _get_fused_moe_state
+from vllm_ascend.quantization.quant_config import AscendFusedMoEMethod
+from vllm_ascend.quantization.quantizer import W8A8Quantizer
 from vllm_ascend.torchair.ops.torchair_fused_moe import (
     TorchairAscendFusedMoE, TorchairAscendUnquantizedFusedMoEMethod)
 from vllm_ascend.utils import AscendSocVersion, adapt_patch  # noqa E402
@@ -233,12 +235,28 @@ class TestTorchairAscendFusedMoe:
         mock_quant_config = MagicMock()
         mock_quant_method = MockFusedMoEMethod()
         mock_quant_config.get_quant_method.return_value = mock_quant_method
+        mock_quant_config.is_layer_skipped_ascend.return_value = False
+        with patch(
+                'vllm_ascend.quantization.quantizer.AscendQuantizer.get_quantizer',
+                return_value=W8A8Quantizer):
+            moe = TorchairAscendFusedMoE(**default_moe_config,
+                                         quant_config=mock_quant_config)
+
+            assert moe.quant_method is not None
+            assert isinstance(moe.quant_method, AscendFusedMoEMethod)
+
+    def test_init_with_mixed_quant(self, mock_dist_env, default_moe_config):
+        mock_quant_config = MagicMock()
+        mock_quant_method = MockFusedMoEMethod()
+        mock_quant_config.get_quant_method.return_value = mock_quant_method
+        mock_quant_config.is_layer_skipped_ascend.return_value = True
 
         moe = TorchairAscendFusedMoE(**default_moe_config,
                                      quant_config=mock_quant_config)
 
         assert moe.quant_method is not None
-        assert moe.quant_method == mock_quant_method
+        assert isinstance(moe.quant_method,
+                          TorchairAscendUnquantizedFusedMoEMethod)
 
     @pytest.mark.parametrize(
         "others_param",

vllm_ascend/torchair/ops/torchair_fused_moe.py

@@ -45,6 +45,7 @@ from vllm_ascend.distributed.communication_op import \
 from vllm_ascend.distributed.parallel_state import get_mc2_group
 from vllm_ascend.ops.expert_load_balancer import ExpertLoadBalancer
 from vllm_ascend.ops.sequence_parallel import MetadataForPadding
+from vllm_ascend.quantization.quant_config import AscendFusedMoEMethod
 from vllm_ascend.torchair.utils import npu_stream_switch, npu_wait_tensor
 from vllm_ascend.utils import (AscendSocVersion, dispose_tensor,
                                get_all_reduce_merge_state,
@@ -1055,7 +1056,13 @@ class TorchairAscendFusedMoE(FusedMoE):
             self.quant_method = TorchairAscendUnquantizedFusedMoEMethod(
                 self.moe)
         else:
-            self.quant_method = quant_config.get_quant_method(self, prefix)
+            if quant_config.is_layer_skipped_ascend(
+                    prefix, quant_config.packed_modules_mapping):
+                self.quant_method = TorchairAscendUnquantizedFusedMoEMethod(
+                    self.moe)
+            else:
+                self.quant_method = AscendFusedMoEMethod(
+                    quant_config, prefix, quant_config.packed_modules_mapping)
 
         assert self.quant_method is not None
 

vllm_ascend/worker/mtp_proposer_v1.py

@@ -18,6 +18,8 @@ from vllm_ascend.ascend_config import get_ascend_config
 from vllm_ascend.ascend_forward_context import set_ascend_forward_context
 from vllm_ascend.attention.utils import AscendCommonAttentionMetadata
 from vllm_ascend.models.deepseek_mtp import CustomDeepSeekMTP
+from vllm_ascend.torchair.models.torchair_deepseek_mtp import \
+    TorchairDeepSeekMTP
 from vllm_ascend.torchair.utils import TorchairCommonAttentionMetadata
 from vllm_ascend.utils import ProfileExecuteDuration, lmhead_tp_enable
 
@@ -266,8 +268,12 @@ class MtpProposer:
         with set_default_torch_dtype(
                 draft_model_config.dtype), set_current_vllm_config(
                     self.vllm_config):
-            self.model = CustomDeepSeekMTP(
-                vllm_config=self.vllm_config).to(target_device)
+            if self.torchair_graph_enabled:
+                self.model = TorchairDeepSeekMTP(
+                    vllm_config=self.vllm_config).to(target_device)
+            else:
+                self.model = CustomDeepSeekMTP(
+                    vllm_config=self.vllm_config).to(target_device)
 
         draft_attn_layer_names = (
             get_layers_from_vllm_config(self.vllm_config, Attention).keys() -