[Core] Rename PassConfig flags as per RFC #27995 (#29646)

Signed-off-by: arpitkh101 <arpit5khandelwal@gmail.com>
Co-authored-by: Luka Govedič <ProExpertProg@users.noreply.github.com>

tests/compile/distributed/test_async_tp.py

@@ -326,7 +326,7 @@ def async_tp_pass_on_test_model(
     vllm_config = VllmConfig()
     vllm_config.compilation_config = CompilationConfig(
         pass_config=PassConfig(
-            enable_async_tp=True,
+            fuse_gemm_comms=True,
         ),
     )
     vllm_config.device_config = DeviceConfig(device=torch.device("cuda"))
@@ -413,7 +413,7 @@ def test_async_tp_pass_correctness(
         "mode": CompilationMode.VLLM_COMPILE,
         "compile_sizes": [2, 4, 8],
         "splitting_ops": [],
-        "pass_config": {"enable_async_tp": async_tp_enabled},
+        "pass_config": {"fuse_gemm_comms": async_tp_enabled},
     }
 
     async_tp_args = [

tests/compile/distributed/test_fusion_all_reduce.py

@@ -295,7 +295,7 @@ def all_reduce_fusion_pass_on_test_model(
         )
     )
     vllm_config.compilation_config.pass_config = PassConfig(
-        enable_fi_allreduce_fusion=True, enable_noop=True
+        fuse_allreduce_rms=True, eliminate_noops=True
     )
     vllm_config.device_config = DeviceConfig(device=torch.device("cuda"))
     vllm_config.parallel_config.rank = local_rank  # Setup rank for debug path

tests/compile/distributed/test_fusions_e2e.py

@@ -192,7 +192,7 @@ def test_attn_quant(
         splitting_ops=splitting_ops,
         # Common
         mode=CompilationMode.VLLM_COMPILE,
-        pass_config=PassConfig(enable_attn_fusion=True, enable_noop=True),
+        pass_config=PassConfig(fuse_attn_quant=True, eliminate_noops=True),
         # Inductor caches custom passes by default as well via uuid
         inductor_compile_config={"force_disable_caches": True},
     )
@@ -282,9 +282,9 @@ def test_tp2_attn_quant_allreduce_rmsnorm(
         # Common
         mode=CompilationMode.VLLM_COMPILE,
         pass_config=PassConfig(
-            enable_attn_fusion=True,
+            fuse_attn_quant=True,
-            enable_noop=True,
+            eliminate_noops=True,
-            enable_fi_allreduce_fusion=True,
+            fuse_allreduce_rms=True,
         ),
         # Inductor caches custom passes by default as well via uuid
         inductor_compile_config={"force_disable_caches": True},
@@ -384,10 +384,10 @@ def test_tp2_attn_quant_async_tp(
         # Common
         level=CompilationMode.VLLM_COMPILE,
         pass_config=PassConfig(
-            enable_attn_fusion=True,
+            fuse_attn_quant=True,
-            enable_noop=True,
+            eliminate_noops=True,
-            enable_sequence_parallelism=True,
+            enable_sp=True,
-            enable_async_tp=True,
+            fuse_gemm_comms=True,
         ),
         # Inductor caches custom passes by default as well via uuid
         inductor_compile_config={"force_disable_caches": True},

tests/compile/distributed/test_sequence_parallelism.py

@@ -153,7 +153,7 @@ class TestAllReduceRMSNormStaticQuantFP8Model(torch.nn.Module):
         ]
 
     def ops_in_model(self):
-        if self.vllm_config.compilation_config.pass_config.enable_fusion:
+        if self.vllm_config.compilation_config.pass_config.fuse_norm_quant:
             return [torch.ops._C.fused_add_rms_norm_static_fp8_quant.default]
         elif RMSNorm.enabled():
             return [
@@ -183,7 +183,7 @@ class TestAllReduceRMSNormStaticQuantFP8Model(torch.nn.Module):
 @pytest.mark.parametrize("seq_len", [16])
 @pytest.mark.parametrize("hidden_size", [16])
 @pytest.mark.parametrize("dtype", [torch.float16, torch.bfloat16])
-@pytest.mark.parametrize("enable_fusion", [True, False])
+@pytest.mark.parametrize("fuse_norm_quant", [True, False])
 @pytest.mark.parametrize("dynamic", [False, True])
 @pytest.mark.skipif(envs.VLLM_TARGET_DEVICE not in ["cuda"], reason="Only test on CUDA")
 def test_sequence_parallelism_pass(
@@ -193,7 +193,7 @@ def test_sequence_parallelism_pass(
     seq_len: int,
     hidden_size: int,
     dtype: torch.dtype,
-    enable_fusion: bool,
+    fuse_norm_quant: bool,
     dynamic: bool,
 ):
     num_processes = 2
@@ -211,7 +211,7 @@ def test_sequence_parallelism_pass(
                 seq_len,
                 hidden_size,
                 dtype,
-                enable_fusion,
+                fuse_norm_quant,
                 dynamic,
             ),
             nprocs=nprocs,
@@ -229,7 +229,7 @@ def sequence_parallelism_pass_on_test_model(
     seq_len: int,
     hidden_size: int,
     dtype: torch.dtype,
-    enable_fusion: bool,
+    fuse_norm_quant: bool,
     dynamic: bool,
 ):
     current_platform.seed_everything(0)
@@ -260,9 +260,9 @@ def sequence_parallelism_pass_on_test_model(
         cudagraph_mode=CUDAGraphMode.NONE,  # avoid piecewise warnings
         custom_ops=custom_ops_list,
         pass_config=PassConfig(
-            enable_sequence_parallelism=True,
+            enable_sp=True,
-            enable_fusion=enable_fusion,
+            fuse_norm_quant=fuse_norm_quant,
-            enable_noop=True,
+            eliminate_noops=True,
         ),
     )  # NoOp needed for fusion
     device_config = DeviceConfig(device=torch.device("cuda"))
@@ -297,7 +297,7 @@ def sequence_parallelism_pass_on_test_model(
             sequence_parallelism_pass,
         ]
 
-        if enable_fusion:
+        if fuse_norm_quant:
             fusion_pass = RMSNormQuantFusionPass(vllm_config)
             passes_for_backend.append(fusion_pass)
 

tests/compile/fullgraph/test_full_graph.py

@@ -122,7 +122,9 @@ def test_full_graph(
             CompilationConfig(
                 mode=CompilationMode.VLLM_COMPILE,
                 custom_ops=["+rms_norm"],
-                pass_config=PassConfig(enable_fusion=True, enable_noop=True),
+                pass_config=PassConfig(
+                    fuse_norm_quant=True, fuse_act_quant=True, eliminate_noops=True
+                ),
             ),
             *model_info,
         )

tests/compile/test_config.py

@@ -1,6 +1,7 @@
 # SPDX-License-Identifier: Apache-2.0
 # SPDX-FileCopyrightText: Copyright contributors to the vLLM project
 import copy
+import logging
 from contextlib import nullcontext
 from unittest.mock import patch
 
@@ -10,8 +11,9 @@ from pydantic import ValidationError
 from vllm.compilation.counter import compilation_counter
 from vllm.compilation.fix_functionalization import FixFunctionalizationPass
 from vllm.config import CompilationConfig, CUDAGraphMode, VllmConfig
-from vllm.config.compilation import CompilationMode
+from vllm.config.compilation import CompilationMode, PassConfig
 from vllm.engine.arg_utils import EngineArgs
+from vllm.logger import _print_warning_once
 from vllm.platforms import current_platform
 from vllm.utils.torch_utils import _is_torch_equal_or_newer
 
@@ -191,7 +193,7 @@ def test_splitting_ops_dynamic():
     config = VllmConfig(
         compilation_config=CompilationConfig(
             mode=CompilationMode.VLLM_COMPILE,
-            pass_config={"enable_attn_fusion": True, "enable_noop": True},
+            pass_config=PassConfig(fuse_attn_quant=True, eliminate_noops=True),
             custom_ops=["+quant_fp8"],
             cudagraph_mode=CUDAGraphMode.PIECEWISE,
         )
@@ -206,7 +208,7 @@ def test_splitting_ops_dynamic():
         config = VllmConfig(
             compilation_config=CompilationConfig(
                 mode=CompilationMode.VLLM_COMPILE,
-                pass_config={"enable_attn_fusion": True, "enable_noop": True},
+                pass_config=PassConfig(fuse_attn_quant=True, eliminate_noops=True),
                 custom_ops=["+quant_fp8"],
                 cudagraph_mode=CUDAGraphMode.PIECEWISE,
                 # work around for accessing all attntion ops
@@ -219,7 +221,7 @@ def test_splitting_ops_dynamic():
         compilation_config=CompilationConfig(
             mode=CompilationMode.VLLM_COMPILE,
             use_inductor_graph_partition=True,
-            pass_config={"enable_attn_fusion": True, "enable_noop": True},
+            pass_config=PassConfig(fuse_attn_quant=True, eliminate_noops=True),
             custom_ops=["+quant_fp8"],
             cudagraph_mode=CUDAGraphMode.PIECEWISE,
         )
@@ -227,7 +229,7 @@ def test_splitting_ops_dynamic():
     # With inductor graph partition, attn_fusion and splitting_ops
     # work together. Default splitting_ops include attention ops.
     assert config.compilation_config.splitting_ops_contain_attention()
-    # enable_attn_fusion is directly supported under
+    # fuse_attn_quant is directly supported under
     # use_inductor_graph_partition=True, and cudagraph_mode
     # is unchanged.
     assert config.compilation_config.cudagraph_mode == CUDAGraphMode.PIECEWISE
@@ -301,7 +303,7 @@ def test_should_split():
         "cudagraph_capture_sizes",
         "max_cudagraph_capture_size",
         "tp_size",
-        "enable_sequence_parallelism",
+        "enable_sp",
         "max_num_batched_tokens",
         "cudagraph_mode",
         "expected_max_size",
@@ -339,7 +341,7 @@ def test_cudagraph_sizes_post_init(
     cudagraph_capture_sizes,
     max_cudagraph_capture_size,
     tp_size,
-    enable_sequence_parallelism,
+    enable_sp,
     max_num_batched_tokens,
     cudagraph_mode,
     expected_max_size,
@@ -355,11 +357,12 @@ def test_cudagraph_sizes_post_init(
         compilation_config = CompilationConfig(
             cudagraph_capture_sizes=cudagraph_capture_sizes,
             max_cudagraph_capture_size=max_cudagraph_capture_size,
-            pass_config={
+            pass_config=PassConfig(
-                "enable_sequence_parallelism": enable_sequence_parallelism,
+                enable_sp=enable_sp,
-                "enable_fusion": True,
+                fuse_norm_quant=True,
-                "enable_noop": True,
+                fuse_act_quant=True,
-            },
+                eliminate_noops=True,
+            ),
             cudagraph_mode=cudagraph_mode,
         )
         engine_args = EngineArgs(
@@ -375,3 +378,53 @@ def test_cudagraph_sizes_post_init(
             vllm_config.compilation_config.max_cudagraph_capture_size
             == expected_max_size
         )
+
+
+def test_pass_config_deprecation(caplog_vllm):
+    caplog_vllm.set_level(logging.WARNING)
+
+    # Clear cache to ensure warnings are re-issued
+    _print_warning_once.cache_clear()
+
+    # Test enable_fusion -> fuse_norm_quant, fuse_act_quant
+    caplog_vllm.clear()
+    config = PassConfig(enable_fusion=True)
+    assert "enable_fusion is deprecated" in caplog_vllm.text
+    assert config.fuse_norm_quant is True
+    assert config.fuse_act_quant is True
+    assert config.enable_fusion is None
+
+    # Test enable_attn_fusion -> fuse_attn_quant
+    caplog_vllm.clear()
+    config = PassConfig(enable_attn_fusion=True)
+    assert "enable_attn_fusion is deprecated" in caplog_vllm.text
+    assert config.fuse_attn_quant is True
+    assert config.enable_attn_fusion is None
+
+    # Test enable_noop -> eliminate_noops
+    caplog_vllm.clear()
+    config = PassConfig(enable_noop=True)
+    assert "enable_noop is deprecated" in caplog_vllm.text
+    assert config.eliminate_noops is True
+    assert config.enable_noop is None
+
+    # Test enable_sequence_parallelism -> enable_sp
+    caplog_vllm.clear()
+    config = PassConfig(enable_sequence_parallelism=True)
+    assert "enable_sequence_parallelism is deprecated" in caplog_vllm.text
+    assert config.enable_sp is True
+    assert config.enable_sequence_parallelism is None
+
+    # Test enable_async_tp -> fuse_gemm_comms
+    caplog_vllm.clear()
+    config = PassConfig(enable_async_tp=True)
+    assert "enable_async_tp is deprecated" in caplog_vllm.text
+    assert config.fuse_gemm_comms is True
+    assert config.enable_async_tp is None
+
+    # Test enable_fi_allreduce_fusion -> fuse_allreduce_rms
+    caplog_vllm.clear()
+    config = PassConfig(enable_fi_allreduce_fusion=True)
+    assert "enable_fi_allreduce_fusion is deprecated" in caplog_vllm.text
+    assert config.fuse_allreduce_rms is True
+    assert config.enable_fi_allreduce_fusion is None

tests/compile/test_functionalization.py

@@ -223,7 +223,11 @@ def test_fix_functionalization(
         model_config=ModelConfig(dtype=dtype),
         compilation_config=CompilationConfig(
             custom_ops=["all"],
-            pass_config=PassConfig(enable_fusion=do_fusion, enable_noop=True),
+            pass_config=PassConfig(
+                fuse_norm_quant=do_fusion,
+                fuse_act_quant=do_fusion,
+                eliminate_noops=True,
+            ),
         ),
     )
 

tests/compile/test_fusion.py

@@ -159,7 +159,9 @@ def test_fusion_rmsnorm_quant(
         compilation_config=CompilationConfig(
             mode=CompilationMode.VLLM_COMPILE,
             custom_ops=custom_ops,
-            pass_config=PassConfig(enable_fusion=True, enable_noop=True),
+            pass_config=PassConfig(
+                fuse_norm_quant=True, fuse_act_quant=True, eliminate_noops=True
+            ),
         ),
     )
     with vllm.config.set_current_vllm_config(vllm_config):

tests/compile/test_fusion_attn.py

@@ -373,7 +373,7 @@ def test_attention_quant_pattern(
 
     # Run model with attn fusion enabled
     vllm_config.compilation_config.pass_config = PassConfig(
-        enable_attn_fusion=True, enable_noop=True
+        fuse_attn_quant=True, eliminate_noops=True
     )
     with (
         set_current_vllm_config(vllm_config),

tests/compile/test_noop_elimination.py

@@ -51,7 +51,7 @@ def test_noop_elimination(dtype, num_tokens, hidden_size, buffer_size):
     vllm_config = VllmConfig(
         compilation_config=CompilationConfig(
             mode=CompilationMode.VLLM_COMPILE,
-            pass_config=PassConfig(enable_noop=True),
+            pass_config=PassConfig(eliminate_noops=True),
         )
     )
     with vllm.config.set_current_vllm_config(vllm_config):
@@ -99,7 +99,7 @@ def test_non_noop_slice_preserved():
     vllm_config = VllmConfig(
         compilation_config=CompilationConfig(
             mode=CompilationMode.VLLM_COMPILE,
-            pass_config=PassConfig(enable_noop=True),
+            pass_config=PassConfig(eliminate_noops=True),
         )
     )
     with vllm.config.set_current_vllm_config(vllm_config):

tests/compile/test_pass_manager.py

@@ -64,8 +64,11 @@ def test_pass_manager_uuid(callable):
 
     # UUID should be different due to config change
     config2 = copy.deepcopy(config)
-    config2.compilation_config.pass_config.enable_fusion = (
+    config2.compilation_config.pass_config.fuse_norm_quant = (
-        not config2.compilation_config.pass_config.enable_fusion
+        not config2.compilation_config.pass_config.fuse_norm_quant
+    )
+    config2.compilation_config.pass_config.fuse_act_quant = (
+        not config2.compilation_config.pass_config.fuse_act_quant
     )
     pass_manager3 = PostGradPassManager()
     pass_manager3.configure(config2)

tests/compile/test_qk_norm_rope_fusion.py

@@ -140,7 +140,7 @@ def test_qk_norm_rope_fusion(
             custom_ops=custom_ops,
             pass_config=PassConfig(
                 enable_qk_norm_rope_fusion=True,
-                enable_noop=True,
+                eliminate_noops=True,
             ),
         ),
     )

tests/compile/test_silu_mul_quant_fusion.py

@@ -168,7 +168,7 @@ def test_fusion_silu_and_mul_quant(
         compilation_config=CompilationConfig(
             mode=CompilationMode.VLLM_COMPILE,
             custom_ops=custom_ops,
-            pass_config=PassConfig(enable_fusion=True, enable_noop=True),
+            pass_config=PassConfig(fuse_act_quant=True, eliminate_noops=True),
         ),
     )
 

tests/distributed/test_sequence_parallel.py

@@ -32,7 +32,8 @@ VLLM_MULTI_NODE = os.getenv("VLLM_MULTI_NODE", "0") == "1"
 class ParallelSetup(NamedTuple):
     tp_size: int
     pp_size: int
-    enable_fusion: bool
+    fuse_norm_quant: bool
+    fuse_act_quant: bool
     eager_mode: bool
     chunked_prefill: bool
 
@@ -66,7 +67,8 @@ class SPTestSettings:
                         ParallelSetup(
                             tp_size=tp_base,
                             pp_size=pp_multiplier * pp_base,
-                            enable_fusion=False,
+                            fuse_norm_quant=False,
+                            fuse_act_quant=False,
                             eager_mode=eager_mode_val,
                             chunked_prefill=chunked_prefill_val,
                         )
@@ -97,7 +99,8 @@ class SPTestSettings:
                         ParallelSetup(
                             tp_size=tp_base,
                             pp_size=pp_multiplier * pp_base,
-                            enable_fusion=False,
+                            fuse_norm_quant=False,
+                            fuse_act_quant=False,
                             eager_mode=eager_mode_val,
                             chunked_prefill=chunked_prefill_val,
                         )
@@ -126,7 +129,8 @@ class SPTestSettings:
                 ParallelSetup(
                     tp_size=tp_base,
                     pp_size=pp_base,
-                    enable_fusion=fusion_val,
+                    fuse_norm_quant=fusion_val,
+                    fuse_act_quant=fusion_val,
                     eager_mode=True,
                     chunked_prefill=False,
                 )
@@ -162,7 +166,7 @@ def _compare_sp(
     test_options: SPTestOptions,
     num_gpus_available: int,
     use_inductor_graph_partition: bool,
-    enable_async_tp: bool,
+    fuse_gemm_comms: bool,
     *,
     method: Literal["generate", "encode"],
     is_multimodal: bool,
@@ -170,7 +174,8 @@ def _compare_sp(
     (
         tp_size,
         pp_size,
-        enable_fusion,
+        fuse_norm_quant,
+        fuse_act_quant,
         eager_mode,
         chunked_prefill,
     ) = parallel_setup
@@ -248,10 +253,11 @@ def _compare_sp(
         "mode": CompilationMode.VLLM_COMPILE,
         "compile_sizes": [4, 8],
         "pass_config": {
-            "enable_sequence_parallelism": True,
+            "enable_sp": True,
-            "enable_async_tp": enable_async_tp,
+            "fuse_gemm_comms": fuse_gemm_comms,
-            "enable_fusion": enable_fusion,
+            "fuse_norm_quant": fuse_norm_quant,
-            "enable_noop": True,
+            "fuse_act_quant": fuse_act_quant,
+            "eliminate_noops": True,
         },
         "use_inductor_graph_partition": use_inductor_graph_partition,
     }
@@ -309,7 +315,7 @@ SP_TEST_MODELS = [
     ],
 )
 @pytest.mark.parametrize("use_inductor_graph_partition", [True, False])
-@pytest.mark.parametrize("enable_async_tp", [False])  # TODO: enable async TP
+@pytest.mark.parametrize("fuse_gemm_comms", [False])  # TODO: enable async TP
 @create_new_process_for_each_test()
 def test_tp_sp_generation(
     model_id: str,
@@ -319,7 +325,7 @@ def test_tp_sp_generation(
     test_options: SPTestOptions,
     num_gpus_available,
     use_inductor_graph_partition: bool,
-    enable_async_tp: bool,
+    fuse_gemm_comms: bool,
 ):
     if use_inductor_graph_partition and not is_torch_equal_or_newer("2.9.0.dev"):
         pytest.skip("inductor graph partition is only available in PyTorch 2.9+")
@@ -328,7 +334,7 @@ def test_tp_sp_generation(
     if (
         "fp8" in model_id.lower()
         and current_platform.get_device_capability() < (9, 0)
-        and (not enable_async_tp)
+        and (not fuse_gemm_comms)
     ):
         pytest.skip("FP8 reduction support begins with sm90 capable devices.")
 
@@ -340,7 +346,7 @@ def test_tp_sp_generation(
         test_options,
         num_gpus_available,
         use_inductor_graph_partition,
-        enable_async_tp=enable_async_tp,
+        fuse_gemm_comms=fuse_gemm_comms,
         method="generate",
         is_multimodal=False,
     )

tests/test_config.py

@@ -1023,17 +1023,17 @@ def test_vllm_config_explicit_overrides():
     assert config.compilation_config.cudagraph_mode == CUDAGraphMode.NONE
 
     # Explicit pass config flags to override defaults
-    pass_config = PassConfig(enable_noop=True, enable_attn_fusion=True)
+    pass_config = PassConfig(eliminate_noops=True, fuse_attn_quant=True)
     compilation_config = CompilationConfig(pass_config=pass_config)
     config = VllmConfig(
         optimization_level=OptimizationLevel.O0,
         compilation_config=compilation_config,
     )
-    assert config.compilation_config.pass_config.enable_noop is True
+    assert config.compilation_config.pass_config.eliminate_noops is True
-    assert config.compilation_config.pass_config.enable_attn_fusion is True
+    assert config.compilation_config.pass_config.fuse_attn_quant is True
 
     # Explicit cudagraph mode override on quantized model at O2
-    pass_config = PassConfig(enable_async_tp=True)
+    pass_config = PassConfig(fuse_gemm_comms=True)
     compilation_config = CompilationConfig(
         cudagraph_mode=CUDAGraphMode.NONE, pass_config=pass_config
     )
@@ -1043,7 +1043,7 @@ def test_vllm_config_explicit_overrides():
         compilation_config=compilation_config,
     )
     assert config.compilation_config.cudagraph_mode == CUDAGraphMode.NONE
-    assert config.compilation_config.pass_config.enable_async_tp is True
+    assert config.compilation_config.pass_config.fuse_gemm_comms is True
     # Mode should still use default for O2
     assert config.compilation_config.mode == CompilationMode.VLLM_COMPILE
 
@@ -1093,7 +1093,7 @@ def test_vllm_config_explicit_overrides():
         compilation_config=compilation_config,
     )
     # Explicit override should be respected
-    assert config.compilation_config.pass_config.enable_noop is False
+    assert config.compilation_config.pass_config.eliminate_noops is False
     # Other fields should still use defaults
     assert config.compilation_config.mode == CompilationMode.VLLM_COMPILE
     assert config.compilation_config.cudagraph_mode == CUDAGraphMode.FULL_AND_PIECEWISE

vllm/compilation/pass_manager.py

@@ -92,22 +92,23 @@ class PostGradPassManager(CustomGraphPass):
 
         # Set the current vllm config to allow tracing CustomOp instances
         with set_current_vllm_config(config, check_compile=False):
-            if self.pass_config.enable_noop:
+            if self.pass_config.eliminate_noops:
                 self.passes += [NoOpEliminationPass(config)]
 
-            if self.pass_config.enable_sequence_parallelism:
+            if self.pass_config.enable_sp:
                 self.passes += [SequenceParallelismPass(config)]
-                if self.pass_config.enable_async_tp:
+                if self.pass_config.fuse_gemm_comms:
                     self.passes += [AsyncTPPass(config)]
 
-            if self.pass_config.enable_fi_allreduce_fusion:
+            if self.pass_config.fuse_allreduce_rms:
                 self.passes += [AllReduceFusionPass(config)]
 
-            if self.pass_config.enable_fusion:
+            if self.pass_config.fuse_norm_quant:
                 self.passes += [RMSNormQuantFusionPass(config)]
+            if self.pass_config.fuse_act_quant:
                 self.passes += [ActivationQuantFusionPass(config)]
 
-            if self.pass_config.enable_attn_fusion:
+            if self.pass_config.fuse_attn_quant:
                 self.passes += [AttnFusionPass(config)]
 
             if self.pass_config.enable_qk_norm_rope_fusion:

vllm/config/compilation.py

@@ -13,7 +13,7 @@ from pydantic.dataclasses import dataclass
 
 import vllm.envs as envs
 from vllm.compilation.inductor_pass import CallableInductorPass, InductorPass
-from vllm.config.utils import config
+from vllm.config.utils import config, handle_deprecated
 from vllm.logger import init_logger
 from vllm.platforms import current_platform
 from vllm.utils.import_utils import resolve_obj_by_qualname
@@ -105,18 +105,43 @@ class PassConfig:
     improper state.
     """
 
+    # New flags
+    fuse_norm_quant: bool = Field(default=None)
+    """Fuse the custom RMSNorm + quant ops."""
+    fuse_act_quant: bool = Field(default=None)
+    """Fuse the custom SiluMul + quant ops."""
+    fuse_attn_quant: bool = Field(default=None)
+    """Fuse the custom attention + quant ops."""
+    eliminate_noops: bool = Field(default=None)
+    """Eliminate no-op ops."""
+    enable_sp: bool = Field(default=None)
+    """Enable sequence parallelism."""
+    fuse_gemm_comms: bool = Field(default=None)
+    """Enable async TP."""
+    fuse_allreduce_rms: bool = Field(default=None)
+    """Enable flashinfer allreduce fusion."""
+
+    # Deprecated flags
     enable_fusion: bool = Field(default=None)
-    """Whether to enable the custom fusion (RMSNorm/SiluMul+quant) pass."""
+    """Deprecated in: v0.12.0. Use fuse_norm_quant and fuse_act_quant 
+    instead. Will be removed in v0.13.0 or v1.0.0, whichever is sooner.
+    """
     enable_attn_fusion: bool = Field(default=None)
-    """Whether to enable the custom attention+quant fusion pass."""
+    """Deprecated in: v0.12.0. Use fuse_attn_quant instead. 
+    Will be removed in v0.13.0 or v1.0.0, whichever is sooner."""
     enable_noop: bool = Field(default=None)
-    """Whether to enable the custom no-op elimination pass."""
+    """Deprecated in: v0.12.0. Use eliminate_noops instead. 
+    Will be removed in v0.13.0 or v1.0.0, whichever is sooner."""
     enable_sequence_parallelism: bool = Field(default=None)
-    """Whether to enable sequence parallelism."""
+    """Deprecated in: v0.12.0. Use enable_sp instead. 
+    Will be removed in v0.13.0 or v1.0.0, whichever is sooner."""
     enable_async_tp: bool = Field(default=None)
-    """Whether to enable async TP."""
+    """Deprecated in: v0.12.0. Use fuse_gemm_comms instead. 
+    Will be removed in v0.13.0 or v1.0.0, whichever is sooner."""
     enable_fi_allreduce_fusion: bool = Field(default=None)
-    """Whether to enable flashinfer allreduce fusion."""
+    """Deprecated in: v0.12.0. Use fuse_allreduce_rms instead. 
+    Will be removed in v0.13.0 or v1.0.0, whichever is sooner."""
+
     fi_allreduce_fusion_max_size_mb: float | None = None
     """The threshold of the communicated tensor sizes under which
     vllm should use flashinfer fused allreduce. Specified as a
@@ -136,7 +161,7 @@ class PassConfig:
             },
         }, where key is the device capability"""
     enable_qk_norm_rope_fusion: bool = False
-    """Whether to enable the fused Q/K RMSNorm + RoPE pass."""
+    """Enable fused Q/K RMSNorm + RoPE pass."""
 
     # TODO(luka) better pass enabling system.
 
@@ -174,6 +199,13 @@ class PassConfig:
         return InductorPass.hash_dict(asdict(self))
 
     @field_validator(
+        "fuse_norm_quant",
+        "fuse_act_quant",
+        "fuse_attn_quant",
+        "eliminate_noops",
+        "enable_sp",
+        "fuse_gemm_comms",
+        "fuse_allreduce_rms",
         "enable_fusion",
         "enable_attn_fusion",
         "enable_noop",
@@ -190,18 +222,71 @@ class PassConfig:
         return handler(value)
 
     def __post_init__(self) -> None:
-        if not self.enable_noop:
+        # Handle deprecation and defaults
-            if self.enable_fusion:
+
+        # Map old flags to new flags and issue warnings
+        handle_deprecated(
+            self,
+            "enable_fusion",
+            ["fuse_norm_quant", "fuse_act_quant"],
+            "v0.13.0 or v1.0.0, whichever is sooner",
+        )
+
+        handle_deprecated(
+            self,
+            "enable_attn_fusion",
+            "fuse_attn_quant",
+            "v0.13.0 or v1.0.0, whichever is sooner",
+        )
+
+        handle_deprecated(
+            self,
+            "enable_sequence_parallelism",
+            "enable_sp",
+            "v0.13.0 or v1.0.0, whichever is sooner",
+        )
+
+        handle_deprecated(
+            self,
+            "enable_async_tp",
+            "fuse_gemm_comms",
+            "v0.13.0 or v1.0.0, whichever is sooner",
+        )
+
+        handle_deprecated(
+            self,
+            "enable_fi_allreduce_fusion",
+            "fuse_allreduce_rms",
+            "v0.13.0 or v1.0.0, whichever is sooner",
+        )
+
+        handle_deprecated(
+            self,
+            "enable_noop",
+            "eliminate_noops",
+            "v0.13.0 or v1.0.0, whichever is sooner",
+        )
+
+        # Force old flags to None to ensure they are not used
+        self.enable_fusion = None
+        self.enable_attn_fusion = None
+        self.enable_noop = None
+        self.enable_sequence_parallelism = None
+        self.enable_async_tp = None
+        self.enable_fi_allreduce_fusion = None
+
+        if not self.eliminate_noops:
+            if self.fuse_norm_quant or self.fuse_act_quant:
                 logger.warning_once(
                     "Fusion enabled but reshape elimination disabled. "
                     "RMSNorm/SiluMul + quant (fp8) fusion might not work"
                 )
-            if self.enable_attn_fusion:
+            if self.fuse_attn_quant:
                 logger.warning_once(
                     "Fusion enabled but reshape elimination disabled. "
                     "Attention + quant (fp8) fusion might not work"
                 )
-            if self.enable_fi_allreduce_fusion:
+            if self.fuse_allreduce_rms:
                 logger.warning_once(
                     "Fusion enabled but reshape elimination disabled. "
                     "Allreduce + rms norm + quant (fp8) fusion might not work"
@@ -873,7 +958,7 @@ class CompilationConfig:
             self.set_splitting_ops_for_inductor_graph_partition()
             return
 
-        if self.pass_config.enable_attn_fusion:
+        if self.pass_config.fuse_attn_quant:
             # here use_inductor_graph_partition is False
             self.set_splitting_ops_for_attn_fusion()
             return
@@ -915,12 +1000,12 @@ class CompilationConfig:
             self.splitting_ops = list(self._attention_ops)
 
     def set_splitting_ops_for_attn_fusion(self):
-        assert self.pass_config.enable_attn_fusion
+        assert self.pass_config.fuse_attn_quant
         if self.splitting_ops is None:
             self.splitting_ops = []
             if self.cudagraph_mode.has_piecewise_cudagraphs():
                 logger.warning_once(
-                    "enable_attn_fusion is incompatible with piecewise "
+                    "fuse_attn_quant is incompatible with piecewise "
                     "cudagraph when use_inductor_graph_partition is off. "
                     "In this case, splitting_ops will be set to empty "
                     "list, and cudagraph_mode will be set to FULL. "
@@ -931,8 +1016,7 @@ class CompilationConfig:
                 self.cudagraph_mode = CUDAGraphMode.FULL
 
         assert not self.splitting_ops_contain_attention(), (
-            "attention ops should not be in splitting_ops "
+            "attention ops should not be in splitting_ops when fuse_attn_quant is True"
-            "when enable_attn_fusion is True"
         )
 
     def splitting_ops_contain_attention(self) -> bool:
@@ -1008,7 +1092,7 @@ class CompilationConfig:
         self, uniform_decode_query_len: int, tensor_parallel_size: int
     ):
         multiple_of = uniform_decode_query_len
-        if tensor_parallel_size > 1 and self.pass_config.enable_sequence_parallelism:
+        if tensor_parallel_size > 1 and self.pass_config.enable_sp:
             multiple_of = max(uniform_decode_query_len, tensor_parallel_size)
             if (
                 multiple_of % uniform_decode_query_len != 0

vllm/config/utils.py

@@ -19,6 +19,10 @@ import torch
 from pydantic.fields import FieldInfo
 from typing_extensions import runtime_checkable
 
+from vllm.logger import init_logger
+
+logger = init_logger(__name__)
+
 if TYPE_CHECKING:
     from _typeshed import DataclassInstance
 else:
@@ -293,3 +297,28 @@ def get_hash_factors(config: ConfigT, ignored_factors: set[str]) -> dict[str, ob
 def hash_factors(items: dict[str, object]) -> str:
     """Return a SHA-256 hex digest of the canonical items structure."""
     return hashlib.sha256(json.dumps(items, sort_keys=True).encode()).hexdigest()
+
+
+def handle_deprecated(
+    config: ConfigT,
+    old_name: str,
+    new_name_or_names: str | list[str],
+    removal_version: str,
+) -> None:
+    old_val = getattr(config, old_name)
+    if old_val is None:
+        return
+
+    if isinstance(new_name_or_names, str):
+        new_names = [new_name_or_names]
+    else:
+        new_names = new_name_or_names
+
+    msg = (
+        f"{old_name} is deprecated and will be removed in {removal_version}. "
+        f"Use {', '.join(new_names)} instead."
+    )
+    logger.warning(msg)
+
+    for new_name in new_names:
+        setattr(config, new_name, old_val)

vllm/config/vllm.py

@@ -83,22 +83,33 @@ IS_DENSE = False
 # See https://github.com/vllm-project/vllm/issues/25689.
 
 
-def enable_fusion(cfg: "VllmConfig") -> bool:
+def enable_norm_fusion(cfg: "VllmConfig") -> bool:
-    """Returns True if RMS norm or quant FP8 is enabled."""
+    """Enable if either RMS norm or quant FP8 custom op is active;
+    otherwise Inductor handles fusion."""
+
     return cfg.compilation_config.is_custom_op_enabled(
         "rms_norm"
     ) or cfg.compilation_config.is_custom_op_enabled("quant_fp8")
 
 
+def enable_act_fusion(cfg: "VllmConfig") -> bool:
+    """Enable if either SiLU+Mul or quant FP8 custom op is active;
+    otherwise Inductor handles fusion."""
+    return cfg.compilation_config.is_custom_op_enabled(
+        "silu_and_mul"
+    ) or cfg.compilation_config.is_custom_op_enabled("quant_fp8")
+
+
 OPTIMIZATION_LEVEL_00 = {
     "compilation_config": {
         "pass_config": {
-            "enable_noop": False,
+            "eliminate_noops": False,
-            "enable_fusion": False,
+            "fuse_norm_quant": False,
-            "enable_fi_allreduce_fusion": False,
+            "fuse_act_quant": False,
-            "enable_attn_fusion": False,
+            "fuse_allreduce_rms": False,
-            "enable_sequence_parallelism": False,
+            "fuse_attn_quant": False,
-            "enable_async_tp": False,
+            "enable_sp": False,
+            "fuse_gemm_comms": False,
         },
         "cudagraph_mode": CUDAGraphMode.NONE,
         "use_inductor_graph_partition": False,
@@ -107,12 +118,13 @@ OPTIMIZATION_LEVEL_00 = {
 OPTIMIZATION_LEVEL_01 = {
     "compilation_config": {
         "pass_config": {
-            "enable_noop": True,
+            "eliminate_noops": True,
-            "enable_fusion": enable_fusion,
+            "fuse_norm_quant": enable_norm_fusion,
-            "enable_fi_allreduce_fusion": False,
+            "fuse_act_quant": enable_act_fusion,
-            "enable_attn_fusion": False,
+            "fuse_allreduce_rms": False,
-            "enable_sequence_parallelism": False,
+            "fuse_attn_quant": False,
-            "enable_async_tp": False,
+            "enable_sp": False,
+            "fuse_gemm_comms": False,
         },
         "cudagraph_mode": CUDAGraphMode.PIECEWISE,
         "use_inductor_graph_partition": False,
@@ -121,12 +133,13 @@ OPTIMIZATION_LEVEL_01 = {
 OPTIMIZATION_LEVEL_02 = {
     "compilation_config": {
         "pass_config": {
-            "enable_noop": True,
+            "eliminate_noops": True,
-            "enable_fusion": enable_fusion,
+            "fuse_norm_quant": enable_norm_fusion,
-            "enable_fi_allreduce_fusion": False,
+            "fuse_act_quant": enable_act_fusion,
-            "enable_attn_fusion": IS_QUANTIZED,
+            "fuse_allreduce_rms": False,
-            "enable_sequence_parallelism": IS_DENSE,
+            "fuse_attn_quant": IS_QUANTIZED,
-            "enable_async_tp": IS_DENSE,
+            "enable_sp": IS_DENSE,
+            "fuse_gemm_comms": IS_DENSE,
         },
         "cudagraph_mode": CUDAGraphMode.FULL_AND_PIECEWISE,
         "use_inductor_graph_partition": False,
@@ -135,12 +148,13 @@ OPTIMIZATION_LEVEL_02 = {
 OPTIMIZATION_LEVEL_03 = {
     "compilation_config": {
         "pass_config": {
-            "enable_noop": True,
+            "eliminate_noops": True,
-            "enable_fusion": enable_fusion,
+            "fuse_norm_quant": enable_norm_fusion,
-            "enable_fi_allreduce_fusion": False,
+            "fuse_act_quant": enable_act_fusion,
-            "enable_attn_fusion": IS_QUANTIZED,
+            "fuse_allreduce_rms": False,
-            "enable_sequence_parallelism": IS_DENSE,
+            "fuse_attn_quant": IS_QUANTIZED,
-            "enable_async_tp": IS_DENSE,
+            "enable_sp": IS_DENSE,
+            "fuse_gemm_comms": IS_DENSE,
         },
         "cudagraph_mode": CUDAGraphMode.FULL_AND_PIECEWISE,
         "use_inductor_graph_partition": False,
@@ -645,9 +659,9 @@ class VllmConfig:
 
         # async tp is built on top of sequence parallelism
         # and requires it to be enabled.
-        if self.compilation_config.pass_config.enable_async_tp:
+        if self.compilation_config.pass_config.fuse_gemm_comms:
-            self.compilation_config.pass_config.enable_sequence_parallelism = True
+            self.compilation_config.pass_config.enable_sp = True
-        if self.compilation_config.pass_config.enable_sequence_parallelism:
+        if self.compilation_config.pass_config.enable_sp:
             if "-rms_norm" in self.compilation_config.custom_ops:
                 logger.warning(
                     "RMS norm force disabled, sequence parallelism might break"
@@ -797,7 +811,7 @@ class VllmConfig:
         # Do this after all the updates to compilation_config.mode
         self.compilation_config.set_splitting_ops_for_v1()
 
-        if self.compilation_config.pass_config.enable_sequence_parallelism:
+        if self.compilation_config.pass_config.enable_sp:
             # With pipeline parallelism or dynamo partitioning,
             # native rms norm tracing errors due to incorrect residual shape.
             # Use custom rms norm to unblock. In the future,
@@ -1062,7 +1076,7 @@ class VllmConfig:
 
             if (
                 self.parallel_config.tensor_parallel_size > 1
-                and self.compilation_config.pass_config.enable_sequence_parallelism
+                and self.compilation_config.pass_config.enable_sp
             ):
                 cudagraph_capture_sizes = self.update_sizes_for_sequence_parallelism(
                     cudagraph_capture_sizes

vllm/v1/worker/gpu_model_runner.py

@@ -2417,10 +2417,7 @@ class GPUModelRunner(
         # Pad tokens to multiple of tensor_parallel_size when
         # enabled collective fusion for SP
         tp_size = self.vllm_config.parallel_config.tensor_parallel_size
-        if (
+        if self.compilation_config.pass_config.enable_sp and tp_size > 1:
-            self.compilation_config.pass_config.enable_sequence_parallelism
-            and tp_size > 1
-        ):
             return round_up(num_scheduled_tokens, tp_size)
         return num_scheduled_tokens
 

vllm/v1/worker/gpu_worker.py

@@ -552,7 +552,7 @@ class Worker(WorkerBase):
 
         if (
             parallel_config.pipeline_parallel_size > 1
-            and compilation_config.pass_config.enable_sequence_parallelism
+            and compilation_config.pass_config.enable_sp
             and forward_pass
         ):
             # currently only supported by V1 GPUModelRunner

vllm/v1/worker/utils.py

@@ -342,7 +342,7 @@ def is_residual_scattered_for_sp(
       partition), SP is always applied
     - Otherwise, SP is only applied for specific shapes in compile_sizes
     """
-    if not vllm_config.compilation_config.pass_config.enable_sequence_parallelism:
+    if not vllm_config.compilation_config.pass_config.enable_sp:
         return False
 
     tp = vllm_config.parallel_config.tensor_parallel_size