[Kernel] Delegate construction of FusedMoEQuantConfig to FusedMoEMethodBase subclasses (#22537)

Signed-off-by: Bill Nell <bnell@redhat.com>

tests/kernels/moe/test_pplx_cutlass_moe.py

@@ -9,6 +9,8 @@ import torch
 from tests.kernels.utils import torch_experts
 from vllm import _custom_ops as ops
 from vllm.config import VllmConfig, set_current_vllm_config
+from vllm.model_executor.layers.fused_moe.config import (
+    fp8_w8a8_moe_quant_config)
 from vllm.model_executor.layers.fused_moe.cutlass_moe import (
     CutlassBatchedExpertsFp8)
 from vllm.model_executor.layers.fused_moe.fused_moe import fused_topk
@@ -143,10 +145,16 @@ def pplx_cutlass_moe(
                             device="cuda",
                             dtype=torch.int64)
 
-    experts = CutlassBatchedExpertsFp8(num_local_experts, num_dispatchers,
-                                       out_dtype, per_act_token, per_out_ch,
-                                       ab_strides1, ab_strides2, c_strides1,
-                                       c_strides2)
+    experts = CutlassBatchedExpertsFp8(
+        num_local_experts, num_dispatchers, out_dtype, ab_strides1,
+        ab_strides2, c_strides1, c_strides2,
+        fp8_w8a8_moe_quant_config(
+            per_act_token_quant=per_act_token,
+            per_out_ch_quant=per_out_ch,
+            w1_scale=chunk_by_rank(w1_scale, rank, world_size),
+            w2_scale=chunk_by_rank(w2_scale, rank, world_size),
+            a1_scale=chunk_by_rank(a1_scale, rank, world_size)
+            if per_act_token else a1_scale[rank]))
 
     fused_cutlass_experts = FusedMoEModularKernel(
         prepare_finalize,
@@ -167,10 +175,7 @@ def pplx_cutlass_moe(
         chunk_topk_ids,
         global_num_experts=num_experts,
         expert_map=None,  #TODO
-        w1_scale=chunk_by_rank(w1_scale, rank, world_size),
-        w2_scale=chunk_by_rank(w2_scale, rank, world_size),
-        a1_scale=chunk_by_rank(a1_scale, rank, world_size)
-        if per_act_token else a1_scale[rank])
+    )
 
     torch.cuda.synchronize()
 

tests/kernels/moe/test_pplx_moe.py

@@ -58,7 +58,7 @@ BATCHED_MOE_MNK_FACTORS = [
 ]
 
 PPLX_COMBOS = [
-    # TODO: figure out why this fails, seems to be test problem
+    # TODO(bnell): figure out why this fails, seems to be test problem
     #(1, 128, 128),
     (2, 128, 512),
     (3, 1024, 2048),
@@ -360,18 +360,18 @@ def pplx_prepare_finalize(
 
     b_a, b_a_scale, expert_num_tokens, _, _ = prepare_finalize.prepare(
         a_chunk,
-        a1_scale,
-        a2_scale,
         chunk_topk_weight,
         chunk_topk_ids,
         num_experts,
         None,
         False,
-        FusedMoEQuantConfig(
+        FusedMoEQuantConfig.make(
             quant_dtype,
-            per_act_token_quant,
-            False,
-            block_shape,
+            per_act_token_quant=per_act_token_quant,
+            per_out_ch_quant=False,
+            block_shape=block_shape,
+            a1_scale=a1_scale,
+            a2_scale=a2_scale,
         ),
     )
 
@@ -540,20 +540,6 @@ def pplx_moe(
 
     topk_ids = topk_ids.to(dtype=torch.uint32)
 
-    experts = BatchedTritonExperts(
-        max_num_tokens=max_num_tokens,
-        num_dispatchers=prepare_finalize.num_dispatchers(),
-        use_fp8_w8a8=quant_dtype == torch.float8_e4m3fn,
-        block_shape=block_shape,
-        per_act_token_quant=per_act_token_quant,
-    )
-
-    fused_experts = FusedMoEModularKernel(
-        prepare_finalize,
-        experts,
-        shared_experts,
-    )
-
     # Note: workers with the same dp_rank must use the exact same inputs.
     a_chunk = chunk_by_rank(a, rank, world_size)
     chunk_topk_weight = chunk_by_rank(topk_weight, rank, world_size)
@@ -567,6 +553,28 @@ def pplx_moe(
     a1_scale_chunk = chunk_scales_by_rank(a1_scale, rank, world_size)
     a2_scale_chunk = chunk_scales_by_rank(a2_scale, rank, world_size)
 
+    quant_config = FusedMoEQuantConfig.make(
+        quant_dtype,
+        block_shape=block_shape,
+        per_act_token_quant=per_act_token_quant,
+        w1_scale=w1_scale_chunk,
+        w2_scale=w2_scale_chunk,
+        a1_scale=a1_scale_chunk,
+        a2_scale=a2_scale_chunk,
+    )
+
+    experts = BatchedTritonExperts(
+        max_num_tokens=max_num_tokens,
+        num_dispatchers=prepare_finalize.num_dispatchers(),
+        quant_config=quant_config,
+    )
+
+    fused_experts = FusedMoEModularKernel(
+        prepare_finalize,
+        experts,
+        shared_experts,
+    )
+
     # Note: for now use_compile will error out if the problem size is
     # large enough to trigger chunking. I'm leaving the flag and
     # setup code in case we are able to revisit this later.
@@ -585,10 +593,6 @@ def pplx_moe(
                          w2_chunk,
                          chunk_topk_weight,
                          chunk_topk_ids,
-                         w1_scale=w1_scale_chunk,
-                         w2_scale=w2_scale_chunk,
-                         a1_scale=a1_scale_chunk,
-                         a2_scale=a2_scale_chunk,
                          global_num_experts=num_experts)
 
     if use_cudagraphs:
@@ -605,10 +609,6 @@ def pplx_moe(
                                  w2_chunk,
                                  chunk_topk_weight,
                                  chunk_topk_ids,
-                                 w1_scale=w1_scale_chunk,
-                                 w2_scale=w2_scale_chunk,
-                                 a1_scale=a1_scale_chunk,
-                                 a2_scale=a2_scale_chunk,
                                  global_num_experts=num_experts)
 
         torch.cuda.synchronize()
@@ -820,7 +820,7 @@ def test_pplx_moe_slow(
         k,
         quant_dtype=quant_dtype,
         block_shape=block_shape,
-        per_act_token_quant=per_act_token_quant,
+        per_out_ch_quant=per_act_token_quant,
     )
 
     parallel_launch(world_size, _pplx_moe, dp_size, a, w1, w2, score, topk, e,
@@ -897,7 +897,7 @@ def _pplx_test_loop(pgi: ProcessGroupInfo, dp_size: int, use_internode: bool,
                 k,
                 quant_dtype=quant_dtype,
                 block_shape=block_shape,
-                per_act_token_quant=per_act_token_quant,
+                per_out_ch_quant=per_act_token_quant,
             )
             args["w1"] = w1
             args["w2"] = w2

tests/kernels/moe/test_triton_moe_ptpc_fp8.py

@@ -7,10 +7,12 @@ import itertools
 import pytest
 import torch
 
+from tests.kernels.moe.utils import fused_moe
 from vllm import _custom_ops as ops
 from vllm.config import VllmConfig, set_current_vllm_config
 from vllm.model_executor.layers.activation import SiluAndMul
-from vllm.model_executor.layers.fused_moe import fused_moe
+from vllm.model_executor.layers.fused_moe.config import (
+    fp8_w8a8_moe_quant_config)
 from vllm.platforms import current_platform
 
 if current_platform.get_device_capability() < (9, 0):
@@ -152,11 +154,12 @@ def test_w8a8_fp8_fused_moe(M, N, K, E, topk, dtype, seed):
             score,
             topk,
             renormalize=False,
-            use_fp8_w8a8=True,  # using fp8
-            per_channel_quant=True,
+            quant_config=fp8_w8a8_moe_quant_config(
+                per_act_token_quant=True,
                 w1_scale=w1_s,
                 w2_scale=w2_s,
                 block_shape=None,  # Not using block quantization
+            ),
         )
 
     # Check results

tests/kernels/moe/utils.py

@@ -9,7 +9,8 @@ from tests.kernels.quant_utils import per_block_cast_to_int8
 from tests.kernels.quantization.nvfp4_utils import (FLOAT4_E2M1_MAX,
                                                     FLOAT8_E4M3_MAX)
 from vllm.model_executor.layers.activation import SiluAndMul
-from vllm.model_executor.layers.fused_moe import fused_experts
+from vllm.model_executor.layers.fused_moe import fused_experts, fused_topk
+from vllm.model_executor.layers.fused_moe.config import FusedMoEQuantConfig
 from vllm.model_executor.layers.fused_moe.fused_batched_moe import (
     BatchedPrepareAndFinalize, BatchedTritonExperts, NaiveBatchedExperts)
 from vllm.model_executor.layers.fused_moe.modular_kernel import (
@@ -34,18 +35,22 @@ def triton_moe(
     per_act_token_quant=False,
     block_shape: Optional[list[int]] = None,
 ) -> torch.Tensor:
+    quant_config = FusedMoEQuantConfig.make(
+        quant_dtype,
+        per_act_token_quant=per_act_token_quant,
+        block_shape=block_shape,
+        w1_scale=w1_scale,
+        w2_scale=w2_scale,
+        a1_scale=a1_scale,
+        a2_scale=a2_scale,
+    )
+
     return fused_experts(a,
                          w1,
                          w2,
                          topk_weight,
                          topk_ids,
-                         w1_scale=w1_scale,
-                         w2_scale=w2_scale,
-                         a1_scale=a1_scale,
-                         a2_scale=a2_scale,
-                         per_channel_quant=per_act_token_quant,
-                         use_fp8_w8a8=quant_dtype == torch.float8_e4m3fn,
-                         block_shape=block_shape)
+                         quant_config=quant_config)
 
 
 def batched_moe(
@@ -64,6 +69,16 @@ def batched_moe(
 ) -> torch.Tensor:
     max_num_tokens = round_up(a.shape[0], 64)
 
+    quant_config = FusedMoEQuantConfig.make(
+        quant_dtype,
+        per_act_token_quant=per_act_token_quant,
+        block_shape=block_shape,
+        w1_scale=w1_scale,
+        w2_scale=w2_scale,
+        a1_scale=a1_scale,
+        a2_scale=a2_scale,
+    )
+
     fused_experts = FusedMoEModularKernel(
         BatchedPrepareAndFinalize(max_num_tokens,
                                   num_dispatchers=1,
@@ -72,21 +87,11 @@ def batched_moe(
         BatchedTritonExperts(
             max_num_tokens=max_num_tokens,
             num_dispatchers=1,
-            use_fp8_w8a8=quant_dtype == torch.float8_e4m3fn,
-            per_act_token_quant=per_act_token_quant,
-            block_shape=block_shape,
+            quant_config=quant_config,
         ),
     )
 
-    return fused_experts(a,
-                         w1,
-                         w2,
-                         topk_weight,
-                         topk_ids,
-                         w1_scale=w1_scale,
-                         w2_scale=w2_scale,
-                         a1_scale=a1_scale,
-                         a2_scale=a2_scale)
+    return fused_experts(a, w1, w2, topk_weight, topk_ids)
 
 
 def naive_batched_moe(
@@ -105,6 +110,16 @@ def naive_batched_moe(
 ) -> torch.Tensor:
     max_num_tokens = round_up(a.shape[0], 64)
 
+    quant_config = FusedMoEQuantConfig.make(
+        quant_dtype,
+        per_act_token_quant=per_act_token_quant,
+        block_shape=block_shape,
+        w1_scale=w1_scale,
+        w2_scale=w2_scale,
+        a1_scale=a1_scale,
+        a2_scale=a2_scale,
+    )
+
     fused_experts = FusedMoEModularKernel(
         BatchedPrepareAndFinalize(max_num_tokens,
                                   num_dispatchers=1,
@@ -113,21 +128,11 @@ def naive_batched_moe(
         NaiveBatchedExperts(
             max_num_tokens=max_num_tokens,
             num_dispatchers=1,
-            use_fp8_w8a8=quant_dtype == torch.float8_e4m3fn,
-            per_act_token_quant=per_act_token_quant,
-            block_shape=block_shape,
+            quant_config=quant_config,
         ),
     )
 
-    return fused_experts(a,
-                         w1,
-                         w2,
-                         topk_weight,
-                         topk_ids,
-                         w1_scale=w1_scale,
-                         w2_scale=w2_scale,
-                         a1_scale=a1_scale,
-                         a2_scale=a2_scale)
+    return fused_experts(a, w1, w2, topk_weight, topk_ids)
 
 
 def chunk_scales(scales: Optional[torch.Tensor], start: int,
@@ -216,7 +221,7 @@ def make_test_weight(
     in_dtype: torch.dtype = torch.bfloat16,
     quant_dtype: Union[torch.dtype, str, None] = None,
     block_shape: Optional[list[int]] = None,
-    per_act_token_quant: bool = False,
+    per_out_ch_quant: bool = False,
 ) -> tuple[torch.Tensor, torch.Tensor, Optional[torch.Tensor],
            Optional[torch.Tensor]]:
     w_16 = torch.randn((e, rows, cols), device="cuda", dtype=in_dtype) / 15
@@ -228,7 +233,7 @@ def make_test_weight(
         w_gs_l = [None] * e
         for idx in range(e):
             w_l[idx], w_s_l[idx], w_gs_l[idx] = moe_quantize_weights(
-                w_16[idx], None, quant_dtype, per_act_token_quant, block_shape)
+                w_16[idx], None, quant_dtype, per_out_ch_quant, block_shape)
 
         w = torch.stack(w_l)
         w_s = torch.stack(w_s_l)
@@ -258,16 +263,16 @@ def make_test_weights(
     in_dtype: torch.dtype = torch.bfloat16,
     quant_dtype: Union[torch.dtype, str, None] = None,
     block_shape: Optional[list[int]] = None,
-    per_act_token_quant: bool = False,
+    per_out_ch_quant: bool = False,
 ) -> tuple[tuple[torch.Tensor, torch.Tensor, Optional[torch.Tensor],
                  Optional[torch.Tensor]],
            tuple[torch.Tensor, torch.Tensor, Optional[torch.Tensor],
                  Optional[torch.Tensor]]]:
     return (
         make_test_weight(e, 2 * n, k, in_dtype, quant_dtype, block_shape,
-                         per_act_token_quant),
+                         per_out_ch_quant),
         make_test_weight(e, k, n, in_dtype, quant_dtype, block_shape,
-                         per_act_token_quant),
+                         per_out_ch_quant),
     )
 
 
@@ -285,6 +290,76 @@ def per_token_cast_to_fp8(
     return fp8_data.view(m, n + pad_size)[:, :n], (x_amax / 448.0).view(m, -1)
 
 
+def make_test_quant_config(
+    e: int,
+    n: int,
+    k: int,
+    in_dtype: torch.dtype,
+    quant_dtype: Union[torch.dtype, str, None] = None,
+    per_act_token_quant: bool = False,
+    block_shape: Optional[list[int]] = None,
+) -> tuple[torch.Tensor, torch.Tensor, FusedMoEQuantConfig]:
+    (_, w1, w1_s, w1_gs), (_, w2, w2_s, w2_gs) = make_test_weights(
+        e,
+        n,
+        k,
+        in_dtype,
+        quant_dtype,
+        per_out_ch_quant=per_act_token_quant,
+        block_shape=block_shape,
+    )
+
+    # Hacky/trivial scales for nvfp4.
+    a1_gscale: Optional[torch.Tensor] = None
+    a2_gscale: Optional[torch.Tensor] = None
+    if quant_dtype == "nvfp4":
+        a1_gscale = torch.ones((e, ), device="cuda", dtype=torch.float32)
+        a2_gscale = torch.ones((e, ), device="cuda", dtype=torch.float32)
+        a1_scale = a1_gscale
+        a2_scale = a2_gscale
+    else:
+        a1_scale = None
+        a2_scale = None
+
+    return w1, w2, FusedMoEQuantConfig.make(
+        quant_dtype,
+        per_act_token_quant=per_act_token_quant,
+        block_shape=block_shape,
+        w1_scale=w1_s,
+        w2_scale=w2_s,
+        a1_gscale=a1_gscale,
+        a2_gscale=a2_gscale,
+        a1_scale=a1_scale,
+        a2_scale=a2_scale,
+        # TODO: make sure this is handled properly
+        g1_alphas=(1 / w1_gs) if w1_gs is not None else None,
+        g2_alphas=(1 / w2_gs) if w2_gs is not None else None,
+    )
+
+
+def fused_moe(
+    hidden_states: torch.Tensor,
+    w1: torch.Tensor,
+    w2: torch.Tensor,
+    score: torch.Tensor,
+    topk: int,
+    renormalize: bool = False,
+    quant_config: Optional[FusedMoEQuantConfig] = None,
+    global_num_experts: int = -1,
+    expert_map: Optional[torch.Tensor] = None,
+) -> torch.Tensor:
+    topk_weights, topk_ids, _ = fused_topk(hidden_states, score.float(), topk,
+                                           renormalize)
+    return fused_experts(hidden_states,
+                         w1,
+                         w2,
+                         topk_weights,
+                         topk_ids,
+                         global_num_experts=global_num_experts,
+                         expert_map=expert_map,
+                         quant_config=quant_config)
+
+
 # CustomOp?
 class BaselineMM(torch.nn.Module):
 

tests/kernels/quantization/test_int8_kernel.py

@@ -8,7 +8,8 @@ import pytest
 import torch
 
 from vllm.model_executor.layers.activation import SiluAndMul
-from vllm.model_executor.layers.fused_moe import fused_moe
+from vllm.model_executor.layers.fused_moe import fused_experts
+from vllm.model_executor.layers.fused_moe.config import FusedMoEQuantConfig
 from vllm.model_executor.layers.quantization.utils.int8_utils import (
     per_token_quant_int8)
 from vllm.platforms import current_platform
@@ -42,7 +43,8 @@ def native_w8a8_per_token_matmul(A, B, As, Bs, output_dtype=torch.float16):
     return C.reshape(origin_C_shape).to(output_dtype)
 
 
-def torch_w8a8_per_column_moe(a, w1, w2, w1_s, w2_s, score, topk):
+def torch_w8a8_per_column_moe(a, w1, w2, w1_s, w2_s, topk, topk_weight,
+                              topk_ids):
     """This function performs fused moe with per-column int8 quantization
     using native torch."""
 
@@ -57,8 +59,6 @@ def torch_w8a8_per_column_moe(a, w1, w2, w1_s, w2_s, score, topk):
     out = torch.zeros(B * topk, w2.shape[1], dtype=a.dtype, device=a.device)
 
     # Calculate routing
-    score = torch.softmax(score, dim=-1, dtype=torch.float32)
-    topk_weight, topk_ids = torch.topk(score, topk)
     topk_weight = topk_weight.view(-1)
     topk_ids = topk_ids.view(-1)
     # Process each expert
@@ -127,20 +127,27 @@ def test_w8a8_fp8_fused_moe(M, N, K, E, topk, dtype, seed):
     w1_s = torch.rand(E, 2 * N, device=w1_fp32.device) * factor_for_scale
     w2_s = torch.rand(E, K, device=w2_fp32.device) * factor_for_scale
     score = torch.randn((M, E), dtype=dtype)
+    score = torch.softmax(score, dim=-1, dtype=torch.float32)
+    topk_weights, topk_ids = torch.topk(score, topk)
+
+    ref_out = torch_w8a8_per_column_moe(a, w1, w2, w1_s, w2_s, topk,
+                                        topk_weights, topk_ids)
 
-    ref_out = torch_w8a8_per_column_moe(a, w1, w2, w1_s, w2_s, score, topk)
-    out = fused_moe(
+    quant_config = FusedMoEQuantConfig.make(
+        torch.int8,
+        per_act_token_quant=True,
+        block_shape=None,
+        w1_scale=w1_s,
+        w2_scale=w2_s,
+    )
+
+    out = fused_experts(
         a,
         w1,
         w2,
-        score,
-        topk,
-        renormalize=False,
-        use_int8_w8a8=True,  # Using int8-w8a8
-        per_channel_quant=True,
-        w1_scale=w1_s,
-        w2_scale=w2_s,
-        block_shape=None,  # Not using block quantization
+        topk_weights,
+        topk_ids,
+        quant_config=quant_config,
     )
 
     # Check results

vllm/model_executor/layers/fused_moe/__init__.py

@@ -10,6 +10,7 @@ from vllm.model_executor.layers.fused_moe.layer import (
 from vllm.model_executor.layers.fused_moe.modular_kernel import (
     FusedMoEActivationFormat, FusedMoEPermuteExpertsUnpermute,
     FusedMoEPrepareAndFinalize)
+from vllm.model_executor.layers.fused_moe.utils import activation_without_mul
 from vllm.triton_utils import HAS_TRITON
 
 _config: Optional[dict[str, Any]] = None
@@ -36,6 +37,7 @@ __all__ = [
     "FusedMoEPermuteExpertsUnpermute",
     "FusedMoEActivationFormat",
     "FusedMoEPrepareAndFinalize",
+    "activation_without_mul",
     "override_config",
     "get_config",
 ]
@@ -43,7 +45,6 @@ __all__ = [
 if HAS_TRITON:
     # import to register the custom ops
     import vllm.model_executor.layers.fused_moe.fused_marlin_moe  # noqa
-    import vllm.model_executor.layers.fused_moe.fused_moe  # noqa
     from vllm.model_executor.layers.fused_moe.batched_deep_gemm_moe import (
         BatchedDeepGemmExperts)
     from vllm.model_executor.layers.fused_moe.batched_triton_or_deep_gemm_moe import (  # noqa: E501
@@ -56,13 +57,12 @@ if HAS_TRITON:
     from vllm.model_executor.layers.fused_moe.fused_batched_moe import (
         BatchedTritonExperts)
     from vllm.model_executor.layers.fused_moe.fused_moe import (
-        TritonExperts, fused_experts, fused_moe, fused_topk,
-        get_config_file_name, grouped_topk)
+        TritonExperts, fused_experts, fused_topk, get_config_file_name,
+        grouped_topk)
     from vllm.model_executor.layers.fused_moe.triton_deep_gemm_moe import (
         TritonOrDeepGemmExperts)
 
     __all__ += [
-        "fused_moe",
         "fused_topk",
         "fused_experts",
         "get_config_file_name",

vllm/model_executor/layers/fused_moe/batched_deep_gemm_moe.py

@@ -8,6 +8,8 @@ import torch
 import vllm.model_executor.layers.fused_moe.modular_kernel as mk
 from vllm.logger import init_logger
 from vllm.model_executor.layers.fused_moe.config import FusedMoEQuantConfig
+from vllm.model_executor.layers.fused_moe.deep_gemm_utils import (
+    deep_gemm_block_shape)
 from vllm.model_executor.layers.fused_moe.topk_weight_and_reduce import (
     TopKWeightAndReduceDelegate)
 from vllm.model_executor.layers.fused_moe.utils import _resize_cache
@@ -212,27 +214,20 @@ def silu_mul_fp8_quant_deep_gemm_cuda(
 
 
 class BatchedDeepGemmExperts(mk.FusedMoEPermuteExpertsUnpermute):
-    # The Deep Gemm kernels only support block size of 128
-    DEEPGEMM_BLOCK_SHAPE: list[int] = [128, 128]
 
-    def __init__(self,
+    def __init__(
+        self,
         max_num_tokens: int,
         num_dispatchers: int,
-                 block_shape: list[int],
-                 per_act_token_quant=False):
+        quant_config: FusedMoEQuantConfig,
+    ):
         """
         max_num_tokens: Maximum number of tokens from a DP Rank
         num_dispatchers: The number of DP dispatchers.
-        block_shape: Block quantization block shape.
-        per_act_token_quant: Per activation token quantization flag.
+        quant_config: Quantization configuration
         """
-        super().__init__(
-            FusedMoEQuantConfig(
-                quant_dtype=torch.float8_e4m3fn,
-                per_act_token_quant=per_act_token_quant,
-                block_shape=block_shape,
-            ))
-        assert self.block_shape == self.DEEPGEMM_BLOCK_SHAPE
+        super().__init__(quant_config)
+        assert self.block_shape == deep_gemm_block_shape()
         self.max_num_tokens = max_num_tokens
         self.num_dispatchers = num_dispatchers
 
@@ -290,12 +285,7 @@ class BatchedDeepGemmExperts(mk.FusedMoEPermuteExpertsUnpermute):
         activation: str,
         global_num_experts: int,
         expert_map: Optional[torch.Tensor],
-        w1_scale: Optional[torch.Tensor],
-        w2_scale: Optional[torch.Tensor],
-        w1_zp: Optional[torch.Tensor],
-        w2_zp: Optional[torch.Tensor],
         a1q_scale: Optional[torch.Tensor],
-        a2_scale: Optional[torch.Tensor],
         workspace13: torch.Tensor,
         workspace2: torch.Tensor,
         expert_tokens_meta: Optional[mk.ExpertTokensMetadata],
@@ -321,11 +311,11 @@ class BatchedDeepGemmExperts(mk.FusedMoEPermuteExpertsUnpermute):
         # for the M expectation of each batch, correctly setting this value
         # may lead to better performance.
         expected_m = max_num_tokens
-        fp8_m_grouped_gemm_nt_masked((a1q, a1q_scale), (w1, w1_scale),
+        fp8_m_grouped_gemm_nt_masked((a1q, a1q_scale), (w1, self.w1_scale),
                                      workspace1, expert_num_tokens, expected_m)
 
         a2q, a2q_scale = silu_mul_fp8_quant_deep_gemm_cuda(
             workspace1, expert_num_tokens)
 
-        fp8_m_grouped_gemm_nt_masked((a2q, a2q_scale), (w2, w2_scale), output,
-                                     expert_num_tokens, expected_m)
+        fp8_m_grouped_gemm_nt_masked((a2q, a2q_scale), (w2, self.w2_scale),
+                                     output, expert_num_tokens, expected_m)

vllm/model_executor/layers/fused_moe/batched_triton_or_deep_gemm_moe.py

@@ -8,55 +8,37 @@ import vllm.model_executor.layers.fused_moe.modular_kernel as mk
 from vllm.model_executor.layers.fused_moe.batched_deep_gemm_moe import (
     BatchedDeepGemmExperts)
 from vllm.model_executor.layers.fused_moe.config import FusedMoEQuantConfig
+from vllm.model_executor.layers.fused_moe.deep_gemm_utils import (
+    deep_gemm_block_shape)
 from vllm.model_executor.layers.fused_moe.fused_batched_moe import (
     BatchedTritonExperts)
 
 
 class BatchedTritonOrDeepGemmExperts(mk.FusedMoEPermuteExpertsUnpermute):
 
-    def __init__(self,
+    def __init__(
+        self,
         max_num_tokens: int,
         num_dispatchers: int,
-                 use_fp8_w8a8: bool = False,
-                 use_int8_w8a8: bool = False,
-                 use_int8_w8a16: bool = False,
-                 use_int4_w4a16: bool = False,
-                 block_shape: Optional[list[int]] = None,
-                 per_act_token_quant: bool = False,
-                 allow_deep_gemm: bool = False):
-        assert not use_int8_w8a8, "NYI"
-        assert not use_int8_w8a16, "NYI"
-        assert not use_int4_w4a16, "NYI"
-
-        super().__init__(
-            FusedMoEQuantConfig.make(
-                use_fp8_w8a8=use_fp8_w8a8,
-                use_int8_w8a8=use_int8_w8a8,
-                use_int8_w8a16=use_int8_w8a16,
-                use_int4_w4a16=use_int4_w4a16,
-                block_shape=block_shape,
-                per_act_token_quant=per_act_token_quant,
-            ))
+        quant_config: FusedMoEQuantConfig,
+        allow_deep_gemm: bool = False,
+    ):
+        super().__init__(quant_config)
 
         self.batched_triton_experts = BatchedTritonExperts(
             max_num_tokens=max_num_tokens,
             num_dispatchers=num_dispatchers,
-            use_fp8_w8a8=use_fp8_w8a8,
-            use_int8_w8a8=use_int8_w8a8,
-            use_int8_w8a16=use_int8_w8a16,
-            use_int4_w4a16=use_int4_w4a16,
-            per_act_token_quant=self.per_act_token_quant,
-            block_shape=self.block_shape,
+            quant_config=self.quant_config,
         )
 
-        self.allow_deep_gemm = (allow_deep_gemm and use_fp8_w8a8
-                                and self.block_shape
-                                == BatchedDeepGemmExperts.DEEPGEMM_BLOCK_SHAPE)
+        self.allow_deep_gemm = (allow_deep_gemm
+                                and self.quant_config.use_fp8_w8a8 and
+                                self.block_shape == deep_gemm_block_shape())
 
         self.batched_deep_gemm_experts = BatchedDeepGemmExperts(
             max_num_tokens=max_num_tokens,
             num_dispatchers=num_dispatchers,
-            block_shape=self.block_shape,  # type: ignore[arg-type]
+            quant_config=self.quant_config,
         ) if self.allow_deep_gemm else None
 
         assert (self.batched_deep_gemm_experts is not None
@@ -143,12 +125,7 @@ class BatchedTritonOrDeepGemmExperts(mk.FusedMoEPermuteExpertsUnpermute):
         activation: str,
         global_num_experts: int,
         expert_map: Optional[torch.Tensor],
-        w1_scale: Optional[torch.Tensor],
-        w2_scale: Optional[torch.Tensor],
-        w1_zp: Optional[torch.Tensor],
-        w2_zp: Optional[torch.Tensor],
         a1q_scale: Optional[torch.Tensor],
-        a2_scale: Optional[torch.Tensor],
         workspace13: torch.Tensor,
         workspace2: torch.Tensor,
         expert_tokens_meta: Optional[mk.ExpertTokensMetadata],
@@ -158,7 +135,6 @@ class BatchedTritonOrDeepGemmExperts(mk.FusedMoEPermuteExpertsUnpermute):
                    if self.allow_deep_gemm else self.batched_triton_experts)
         assert experts is not None
         experts.apply(output, hidden_states, w1, w2, topk_weights, topk_ids,
-                      activation, global_num_experts, expert_map, w1_scale,
-                      w2_scale, w1_zp, w2_zp, a1q_scale, a2_scale, workspace13,
-                      workspace2, expert_tokens_meta,
+                      activation, global_num_experts, expert_map, a1q_scale,
+                      workspace13, workspace2, expert_tokens_meta,
                       apply_router_weight_on_input)

vllm/model_executor/layers/fused_moe/cutlass_moe.py

@@ -211,21 +211,14 @@ class CutlassExpertsFp8Base(mk.FusedMoEPermuteExpertsUnpermute):
     def __init__(
         self,
         out_dtype: Optional[torch.dtype],
-        per_act_token_quant: bool,
-        per_out_ch_quant: bool,
         ab_strides1: torch.Tensor,
         ab_strides2: torch.Tensor,
         c_strides1: torch.Tensor,
         c_strides2: torch.Tensor,
-        block_shape: Optional[list[int]] = None,
+        quant_config: FusedMoEQuantConfig,
     ):
-        super().__init__(
-            FusedMoEQuantConfig(
-                quant_dtype=torch.float8_e4m3fn,
-                per_act_token_quant=per_act_token_quant,
-                per_out_ch_quant=per_out_ch_quant,
-                block_shape=block_shape,
-            ))
+        assert quant_config.use_fp8_w8a8
+        super().__init__(quant_config)
         self.out_dtype = out_dtype
         self.ab_strides1 = ab_strides1
         self.ab_strides2 = ab_strides2
@@ -247,19 +240,14 @@ class CutlassExpertsFp8Base(mk.FusedMoEPermuteExpertsUnpermute):
         activation: str,
         global_num_experts: int,
         expert_map: Optional[torch.Tensor],
-        w1_scale: Optional[torch.Tensor],
-        w2_scale: Optional[torch.Tensor],
-        w1_zp: Optional[torch.Tensor],
-        w2_zp: Optional[torch.Tensor],
         a1q_scale: Optional[torch.Tensor],
-        a2_scale: Optional[torch.Tensor],
         workspace13: torch.Tensor,
         workspace2: torch.Tensor,
         expert_tokens_meta: Optional[mk.ExpertTokensMetadata],
         apply_router_weight_on_input: bool,
     ):
-        assert w1_zp is None, "w1_zp is not supported in CUTLASS MoE"
-        assert w2_zp is None, "w2_zp is not supported in CUTLASS MoE"
+        assert self.w1_zp is None, "w1_zp is not supported in CUTLASS MoE"
+        assert self.w2_zp is None, "w2_zp is not supported in CUTLASS MoE"
 
         expert_num_tokens = None
         if expert_tokens_meta is not None:
@@ -273,9 +261,10 @@ class CutlassExpertsFp8Base(mk.FusedMoEPermuteExpertsUnpermute):
         in_dtype = hidden_states.dtype
         run_cutlass_moe_fp8(
             output, hidden_states, w1, w2, topk_ids, activation_callable,
-            global_num_experts, expert_map, w1_scale, w2_scale, a1q_scale,
-            a2_scale, self.ab_strides1, self.ab_strides2, self.c_strides1,
-            self.c_strides2, workspace13, workspace2, expert_num_tokens,
+            global_num_experts, expert_map, self.w1_scale, self.w2_scale,
+            a1q_scale, self.a2_scale, self.ab_strides1, self.ab_strides2,
+            self.c_strides1, self.c_strides2, workspace13, workspace2,
+            expert_num_tokens,
             self.out_dtype if self.out_dtype is not None else in_dtype,
             self.per_act_token_quant, self.per_out_ch_quant,
             use_batched_format, topk_weights)
@@ -286,23 +275,19 @@ class CutlassExpertsFp8(CutlassExpertsFp8Base):
     def __init__(
         self,
         out_dtype: Optional[torch.dtype],
-        per_act_token_quant: bool,
-        per_out_ch_quant: bool,
         ab_strides1: torch.Tensor,
         ab_strides2: torch.Tensor,
         c_strides1: torch.Tensor,
         c_strides2: torch.Tensor,
-        block_shape: Optional[list[int]] = None,
+        quant_config: FusedMoEQuantConfig,
     ):
         super().__init__(
             out_dtype,
-            per_act_token_quant,
-            per_out_ch_quant,
             ab_strides1,
             ab_strides2,
             c_strides1,
             c_strides2,
-            block_shape,
+            quant_config,
         )
 
     @property
@@ -348,23 +333,19 @@ class CutlassBatchedExpertsFp8(CutlassExpertsFp8Base):
         max_experts_per_worker: int,
         num_dispatchers: int,
         out_dtype: Optional[torch.dtype],
-        per_act_token_quant: bool,
-        per_out_ch_quant: bool,
         ab_strides1: torch.Tensor,
         ab_strides2: torch.Tensor,
         c_strides1: torch.Tensor,
         c_strides2: torch.Tensor,
-        block_shape: Optional[list[int]] = None,
+        quant_config: FusedMoEQuantConfig,
     ):
         super().__init__(
             out_dtype,
-            per_act_token_quant,
-            per_out_ch_quant,
             ab_strides1,
             ab_strides2,
             c_strides1,
             c_strides2,
-            block_shape,
+            quant_config,
         )
         assert max_experts_per_worker > 0
         self.max_experts_per_worker = max_experts_per_worker
@@ -414,16 +395,12 @@ def cutlass_moe_fp8(
     w2_q: torch.Tensor,
     topk_weights: torch.Tensor,
     topk_ids: torch.Tensor,
-    w1_scale: torch.Tensor,
-    w2_scale: torch.Tensor,
     ab_strides1: torch.Tensor,
     ab_strides2: torch.Tensor,
     c_strides1: torch.Tensor,
     c_strides2: torch.Tensor,
-    per_act_token: Optional[bool] = None,
+    quant_config: FusedMoEQuantConfig,
     activation: str = "silu",
-    a1_scale: Optional[torch.Tensor] = None,
-    a2_scale: Optional[torch.Tensor] = None,
     expert_map: Optional[torch.Tensor] = None,
     apply_router_weight_on_input: bool = False,
     global_num_experts: int = -1,
@@ -475,10 +452,18 @@ def cutlass_moe_fp8(
     Returns:
     - torch.Tensor: The fp16 output tensor after applying the MoE layer.
     """
-    if per_act_token is None:
-        per_act_token = a1_scale.numel() != 1 if a1_scale is not None else (
-            a2_scale.numel() != 1 if a2_scale is not None else False)
-    per_out_ch = w1_scale.numel() != w1_q.size(0)
+    assert quant_config is not None
+
+    if quant_config.a1_scale is not None:
+        assert (quant_config.per_act_token_quant ==
+                quant_config.a1_scale.numel() != 1)
+    if quant_config.a2_scale is not None:
+        assert (quant_config.per_act_token_quant ==
+                quant_config.a2_scale.numel() != 1)
+
+    assert (quant_config.w1_scale is None
+            or (quant_config.per_out_ch_quant == (quant_config.w1_scale.size(1)
+                                                  == w1_q.size(1))))
 
     num_experts = global_num_experts if global_num_experts != -1 else w1_q.size(
         0)
@@ -487,12 +472,11 @@ def cutlass_moe_fp8(
         MoEPrepareAndFinalizeNoEP(),
         CutlassExpertsFp8(
             out_dtype=a.dtype,
-            per_act_token_quant=per_act_token,
-            per_out_ch_quant=per_out_ch,
             ab_strides1=ab_strides1,
             ab_strides2=ab_strides2,
             c_strides1=c_strides1,
             c_strides2=c_strides2,
+            quant_config=quant_config,
         ),
     )
 
@@ -502,14 +486,9 @@ def cutlass_moe_fp8(
         w2_q,
         topk_weights,
         topk_ids,
-        False,
-        activation,
-        num_experts,
-        expert_map,
-        w1_scale,
-        w2_scale,
-        a1_scale=a1_scale,
-        a2_scale=a2_scale,
+        activation=activation,
+        global_num_experts=num_experts,
+        expert_map=expert_map,
         apply_router_weight_on_input=apply_router_weight_on_input,
     )
 
@@ -652,42 +631,21 @@ def run_cutlass_moe_fp4(
     return
 
 
+# Split into batched and non-batched
 class CutlassExpertsFp4(mk.FusedMoEPermuteExpertsUnpermute):
 
     def __init__(
         self,
-        g1_alphas: torch.Tensor,
-        g2_alphas: torch.Tensor,
-        a1_gscale: torch.Tensor,
-        a2_gscale: torch.Tensor,
         max_experts_per_worker: int,
         out_dtype: torch.dtype,
-        per_act_token_quant: bool,
-        per_out_ch_quant: bool,
-        block_shape: Optional[list[int]] = None,
+        quant_config: FusedMoEQuantConfig,
         use_batched_format: bool = False,
     ):
-        super().__init__(
-            # NVFP4 requires two levels of quantization, which involves
-            # computing some scaling factors dynamically. This makes it
-            # incompatible with the typical prepare -> MoE -> finalize
-            # pipeline. Move the quantization logic into the MoE body.
-            FusedMoEQuantConfig(
-                quant_dtype=None,  # skip quantization in prepare/finalize
-                per_act_token_quant=per_act_token_quant,
-                per_out_ch_quant=per_out_ch_quant,
-                block_shape=block_shape,
-            ))
+        super().__init__(quant_config)
         self.max_experts_per_worker = max_experts_per_worker
         self.out_dtype = out_dtype
         self.use_batched_format = use_batched_format
 
-        # TODO(bnell): put this stuff into quant config?
-        self.g1_alphas = g1_alphas
-        self.g2_alphas = g2_alphas
-        self.a1_gscale = a1_gscale
-        self.a2_gscale = a2_gscale
-
     @property
     def activation_formats(
         self
@@ -746,12 +704,7 @@ class CutlassExpertsFp4(mk.FusedMoEPermuteExpertsUnpermute):
         activation: str,
         global_num_experts: int,
         expert_map: Optional[torch.Tensor],
-        w1_scale: torch.Tensor,
-        w2_scale: torch.Tensor,
-        w1_zp: Optional[torch.Tensor],
-        w2_zp: Optional[torch.Tensor],
-        a1q_scale: Optional[torch.Tensor],
-        a2_scale: torch.Tensor,
+        a1q_scale: Optional[torch.Tensor],  # unused
         workspace13: Optional[torch.Tensor],
         workspace2: Optional[torch.Tensor],
         expert_tokens_meta: Optional[mk.ExpertTokensMetadata],
@@ -765,11 +718,11 @@ class CutlassExpertsFp4(mk.FusedMoEPermuteExpertsUnpermute):
             a=hidden_states,
             a1_gscale=self.a1_gscale,
             w1_fp4=w1,
-            w1_blockscale=w1_scale,
+            w1_blockscale=self.w1_scale,
             w1_alphas=self.g1_alphas,
             a2_gscale=self.a2_gscale,
             w2_fp4=w2,
-            w2_blockscale=w2_scale,
+            w2_blockscale=self.w2_scale,
             w2_alphas=self.g2_alphas,
             topk_weights=topk_weights,
             topk_ids=topk_ids,
@@ -788,14 +741,9 @@ def cutlass_moe_fp4(
         a: torch.Tensor,
         w1_fp4: torch.Tensor,
         w2_fp4: torch.Tensor,
-        w1_blockscale: torch.Tensor,
-        w2_blockscale: torch.Tensor,
-        g1_alphas: torch.Tensor,
-        g2_alphas: torch.Tensor,
-        a1_gscale: torch.Tensor,
-        a2_gscale: torch.Tensor,
         topk_weights: torch.Tensor,
         topk_ids: torch.Tensor,
+        quant_config: FusedMoEQuantConfig,
         m: int,
         n: int,
         k: int,
@@ -805,17 +753,31 @@ def cutlass_moe_fp4(
     assert expert_map is None, ("Expert Parallelism / expert_map "
                                 "is currently not supported for "
                                 "ModelOptNvFp4FusedMoE's cutlass_moe_fp4.")
+
+    # TODO(bnell): this feels a bit hacky
+    # NVFP4 requires two levels of quantization, which involves
+    # computing some scaling factors dynamically. This makes it
+    # incompatible with the typical prepare -> MoE -> finalize
+    # pipeline. Move the quantization logic into the MoE body.
+    quant_config = FusedMoEQuantConfig.make(
+        quant_dtype=None,  # skip quantization in prepare/finalize
+        per_act_token_quant=quant_config.per_act_token_quant,
+        per_out_ch_quant=quant_config.per_out_ch_quant,
+        block_shape=quant_config.block_shape,
+        g1_alphas=quant_config.g1_alphas,
+        g2_alphas=quant_config.g2_alphas,
+        a1_gscale=quant_config.a1_gscale,
+        a2_gscale=quant_config.a2_gscale,
+        w1_scale=quant_config.w1_scale,
+        w2_scale=quant_config.w2_scale,
+    )
+
     fn = mk.FusedMoEModularKernel(
         MoEPrepareAndFinalizeNoEP(),
         CutlassExpertsFp4(
-            g1_alphas,
-            g2_alphas,
-            a1_gscale,
-            a2_gscale,
             max_experts_per_worker=e,
             out_dtype=a.dtype,
-            per_act_token_quant=False,
-            per_out_ch_quant=False,
+            quant_config=quant_config,
             use_batched_format=False,
         ),
     )
@@ -830,10 +792,6 @@ def cutlass_moe_fp4(
         activation="silu",
         global_num_experts=e,
         expert_map=None,
-        w1_scale=w1_blockscale,
-        w2_scale=w2_blockscale,
-        a1_scale=None,
-        a2_scale=None,
         apply_router_weight_on_input=apply_router_weight_on_input,
     )
 
@@ -891,6 +849,7 @@ def _valid_cutlass_block_scaled_grouped_gemm(
     return True
 
 
+# TODO(bnell): would be nice combine/integrate with regular cutlass_fp8.
 def run_cutlass_block_scaled_fused_experts(
     a: torch.Tensor,
     w1: torch.Tensor,

vllm/model_executor/layers/fused_moe/deep_gemm_moe.py

 # SPDX-License-Identifier: Apache-2.0
 # SPDX-FileCopyrightText: Copyright contributors to the vLLM project
-import functools
 from typing import Optional
 
 import torch
@@ -9,9 +8,11 @@ from tqdm import tqdm
 import vllm.envs as env
 import vllm.model_executor.layers.fused_moe.modular_kernel as mk
 from vllm.logger import init_logger
-from vllm.model_executor.layers.fused_moe.config import FusedMoEQuantConfig
+from vllm.model_executor.layers.fused_moe.config import (
+    FusedMoEQuantConfig, fp8_w8a8_moe_quant_config)
 from vllm.model_executor.layers.fused_moe.deep_gemm_utils import (
-    compute_aligned_M, deepgemm_moe_permute, deepgemm_unpermute_and_reduce)
+    compute_aligned_M, deep_gemm_block_shape, deepgemm_moe_permute,
+    deepgemm_unpermute_and_reduce)
 from vllm.model_executor.layers.fused_moe.prepare_finalize import (
     MoEPrepareAndFinalizeNoEP)
 from vllm.model_executor.layers.fused_moe.topk_weight_and_reduce import (
@@ -25,14 +26,6 @@ from vllm.utils.deep_gemm import m_grouped_fp8_gemm_nt_contiguous
 logger = init_logger(__name__)
 
 
-@functools.cache
-def deep_gemm_block_shape() -> list[int]:
-    # Lazy import to avoid CUDA initialization problems.
-    import deep_gemm as dg
-    block = dg.get_m_alignment_for_contiguous_layout()
-    return [block, block]
-
-
 def _valid_deep_gemm_shape(M: int, N: int, K: int) -> bool:
     align = deep_gemm_block_shape()[0]
     return align <= M and N % align == 0 and K % align == 0
@@ -163,13 +156,12 @@ def warmup_deepgemm_gg_contiguous_kernels(w1: torch.Tensor, w2: torch.Tensor,
 
 class DeepGemmExperts(mk.FusedMoEPermuteExpertsUnpermute):
 
-    def __init__(self):
-        super().__init__(
-            FusedMoEQuantConfig(
-                quant_dtype=torch.float8_e4m3fn,
-                per_act_token_quant=False,
-                block_shape=deep_gemm_block_shape(),
-            ))
+    def __init__(self, quant_config: FusedMoEQuantConfig):
+        super().__init__(quant_config)
+        assert quant_config.block_shape == deep_gemm_block_shape()
+        assert quant_config.quant_dtype == torch.float8_e4m3fn
+        assert not quant_config.per_act_token_quant
+        assert not quant_config.per_out_ch_quant
 
     @property
     def activation_formats(
@@ -221,21 +213,17 @@ class DeepGemmExperts(mk.FusedMoEPermuteExpertsUnpermute):
         activation: str,
         global_num_experts: int,
         expert_map: Optional[torch.Tensor],
-        w1_scale: Optional[torch.Tensor],
-        w2_scale: Optional[torch.Tensor],
-        w1_zp: Optional[torch.Tensor],
-        w2_zp: Optional[torch.Tensor],
         a1q_scale: Optional[torch.Tensor],
-        a2_scale: Optional[torch.Tensor],
         workspace13: torch.Tensor,
         workspace2: torch.Tensor,
         expert_tokens_meta: Optional[mk.ExpertTokensMetadata],
         apply_router_weight_on_input: bool,
     ):
-        assert self.block_shape is not None
         assert a1q_scale is not None
-        assert w1_scale is not None
-        assert w2_scale is not None
+        assert self.a2_scale is None
+        assert self.block_shape is not None
+        assert self.w1_scale is not None
+        assert self.w2_scale is not None
 
         a1q = hidden_states
         _, N, K = w1.size()
@@ -270,7 +258,7 @@ class DeepGemmExperts(mk.FusedMoEPermuteExpertsUnpermute):
             aq_out=a1q_perm)
         assert a1q.size(0) == M_sum
 
-        m_grouped_fp8_gemm_nt_contiguous((a1q, a1q_scale), (w1, w1_scale),
+        m_grouped_fp8_gemm_nt_contiguous((a1q, a1q_scale), (w1, self.w1_scale),
                                          mm1_out, expert_ids)
 
         self.activation(activation, act_out, mm1_out.view(-1, N))
@@ -281,7 +269,7 @@ class DeepGemmExperts(mk.FusedMoEPermuteExpertsUnpermute):
                                                    column_major_scales=True,
                                                    out_q=quant_out)
 
-        m_grouped_fp8_gemm_nt_contiguous((a2q, a2q_scale), (w2, w2_scale),
+        m_grouped_fp8_gemm_nt_contiguous((a2q, a2q_scale), (w2, self.w2_scale),
                                          mm2_out, expert_ids)
 
         if apply_router_weight_on_input:
@@ -348,9 +336,16 @@ def deep_gemm_moe_fp8(
     Returns:
     - torch.Tensor: The bfloat16 output tensor after applying the MoE layer.
     """
+    quant_config = fp8_w8a8_moe_quant_config(
+        w1_scale=w1_scale,
+        w2_scale=w2_scale,
+        a1_scale=a1_scale,
+        a2_scale=a2_scale,
+        block_shape=deep_gemm_block_shape())
+
     fn = mk.FusedMoEModularKernel(
         MoEPrepareAndFinalizeNoEP(),
-        DeepGemmExperts(),
+        DeepGemmExperts(quant_config),
     )
     return fn(
         hidden_states,
@@ -358,13 +353,9 @@ def deep_gemm_moe_fp8(
         w2,
         topk_weights,
         topk_ids,
-        inplace,
-        activation,
-        global_num_experts,
-        expert_map,
-        w1_scale=w1_scale,
-        w2_scale=w2_scale,
-        a1_scale=a1_scale,
-        a2_scale=a2_scale,
+        inplace=inplace,
+        activation=activation,
+        global_num_experts=global_num_experts,
+        expert_map=expert_map,
         apply_router_weight_on_input=apply_router_weight_on_input,
     )

vllm/model_executor/layers/fused_moe/deepep_ht_prepare_finalize.py

@@ -183,8 +183,6 @@ class DeepEPHTPrepareAndFinalize(mk.FusedMoEPrepareAndFinalize):
     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,
@@ -204,7 +202,7 @@ class DeepEPHTPrepareAndFinalize(mk.FusedMoEPrepareAndFinalize):
             # Quant and Dispatch
             a1q, a1q_scale = moe_kernel_quantize_input(
                 a1,
-                a1_scale,
+                quant_config.a1_scale,
                 quant_dtype=quant_config.quant_dtype,
                 per_act_token_quant=quant_config.per_act_token_quant,
                 block_shape=quant_config.block_shape,
@@ -215,7 +213,7 @@ class DeepEPHTPrepareAndFinalize(mk.FusedMoEPrepareAndFinalize):
         else:
             a1q = a1
             a1q_scale = None
-            a1_post_scale = a1_scale
+            a1_post_scale = quant_config.a1_scale
 
         return (lambda *args: None,
                 self._do_dispatch(tokens=a1q,
@@ -229,8 +227,6 @@ class DeepEPHTPrepareAndFinalize(mk.FusedMoEPrepareAndFinalize):
     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,
@@ -238,9 +234,8 @@ class DeepEPHTPrepareAndFinalize(mk.FusedMoEPrepareAndFinalize):
         apply_router_weight_on_input: bool,
         quant_config: FusedMoEQuantConfig,
     ) -> mk.PrepareResultType:
-        (_, receiver) = self.prepare_async(a1, a1_scale, a2_scale,
-                                           topk_weights, topk_ids, num_experts,
-                                           expert_map,
+        (_, receiver) = self.prepare_async(a1, topk_weights, topk_ids,
+                                           num_experts, expert_map,
                                            apply_router_weight_on_input,
                                            quant_config)
         return receiver()

vllm/model_executor/layers/fused_moe/deepep_ll_prepare_finalize.py

@@ -77,15 +77,13 @@ class DeepEPLLPrepareAndFinalize(mk.FusedMoEPrepareAndFinalize):
     def _do_quant(
         self,
         x: Union[torch.Tensor, tuple[torch.Tensor, torch.Tensor]],
-        a1_scale: Optional[torch.Tensor],
         a1_dtype: torch.dtype,
-        quant_dtype: Union[torch.dtype, str, None],
-        per_act_token_quant: bool,
-        block_shape: Optional[list[int]],
+        quant_config: FusedMoEQuantConfig,
     ) -> tuple[torch.Tensor, Optional[torch.Tensor]]:
 
-        block_k = block_shape[1] if block_shape is not None else None
         if self.use_fp8_dispatch:
+            block_k = quant_config.block_shape[
+                1] if quant_config.block_shape is not None else None
             if block_k == DEEPEP_QUANT_BLOCK_SIZE:
                 # DeepEP kernels did the quantization for us.
                 x, x_scales = x
@@ -101,12 +99,12 @@ class DeepEPLLPrepareAndFinalize(mk.FusedMoEPrepareAndFinalize):
 
         # TODO (varun): Optimization - Use a batched version of quant
         x = x.view((-1, hidden_dim))
-        x, x_scales = moe_kernel_quantize_input(x, a1_scale, quant_dtype,
-                                                per_act_token_quant,
-                                                block_shape)
+        x, x_scales = moe_kernel_quantize_input(
+            x, quant_config.a1_scale, quant_config.quant_dtype,
+            quant_config.per_act_token_quant, quant_config.block_shape)
         x = x.view((num_experts, -1, hidden_dim))
 
-        if quant_dtype is not None:
+        if quant_config.quant_dtype is not None:
             assert x_scales is not None
             x_scales = normalize_batched_scales_shape(x_scales, num_experts)
 
@@ -118,8 +116,6 @@ class DeepEPLLPrepareAndFinalize(mk.FusedMoEPrepareAndFinalize):
     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,
@@ -139,9 +135,10 @@ class DeepEPLLPrepareAndFinalize(mk.FusedMoEPrepareAndFinalize):
             assert hidden_size % 128 == 0, \
             "DeepEP kernels quantize the inputs in blocks of shape 128"
 
-        has_per_token_scales = a1_scale.numel(
-        ) != 1 if a1_scale is not None else (
-            a2_scale.numel() != 1 if a2_scale is not None else False)
+        has_per_token_scales = quant_config.a1_scale.numel(
+        ) != 1 if quant_config.a1_scale is not None else (
+            quant_config.a2_scale.numel() != 1
+            if quant_config.a2_scale is not None else False)
         assert not has_per_token_scales, (
             "low_latency kernels doesn't support dispatching per-token scales")
 
@@ -163,20 +160,21 @@ class DeepEPLLPrepareAndFinalize(mk.FusedMoEPrepareAndFinalize):
                                                 return_recv_hook=True)
         self.handles[a2a_idx] = handle
 
-        return (hook, lambda: self._receiver(expert_x, expert_num_tokens,
+        return (
+            hook,
+            lambda: self._receiver(expert_x, expert_num_tokens, quant_config.
                                    a1_scale, a1.dtype, quant_config))
 
     def _receiver(
         self,
         expert_x: Union[torch.Tensor, tuple[torch.Tensor, torch.Tensor]],
         expert_num_tokens: torch.Tensor,
-        a1_scale,
-        a1_dtype,
+        a1_scale: Optional[torch.Tensor],
+        a1_dtype: torch.dtype,
         quant_config: FusedMoEQuantConfig,
     ) -> mk.PrepareResultType:
-        expert_x, expert_x_scale = self._do_quant(
-            expert_x, a1_scale, a1_dtype, quant_config.quant_dtype,
-            quant_config.per_act_token_quant, quant_config.block_shape)
+        expert_x, expert_x_scale = self._do_quant(expert_x, a1_dtype,
+                                                  quant_config)
 
         expert_tokens_meta = mk.ExpertTokensMetadata(
             expert_num_tokens=expert_num_tokens, expert_num_tokens_cpu=None)
@@ -186,8 +184,6 @@ class DeepEPLLPrepareAndFinalize(mk.FusedMoEPrepareAndFinalize):
     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,
@@ -195,8 +191,7 @@ class DeepEPLLPrepareAndFinalize(mk.FusedMoEPrepareAndFinalize):
         apply_router_weight_on_input: bool,
         quant_config: FusedMoEQuantConfig,
     ) -> mk.PrepareResultType:
-        hook, receiver = self.prepare_async(a1, a1_scale, a2_scale,
-                                            topk_weights, topk_ids,
+        hook, receiver = self.prepare_async(a1, topk_weights, topk_ids,
                                             num_experts, expert_map,
                                             apply_router_weight_on_input,
                                             quant_config)

vllm/model_executor/layers/fused_moe/flashinfer_cutlass_moe.py

 # SPDX-License-Identifier: Apache-2.0
 # SPDX-FileCopyrightText: Copyright contributors to the vLLM project
-from typing import Optional, Union
+from typing import Optional
 
 import torch
 
@@ -44,33 +44,20 @@ class FlashInferExperts(mk.FusedMoEPermuteExpertsUnpermute):
 
     def __init__(
         self,
-        g1_alphas: torch.Tensor,
-        g2_alphas: torch.Tensor,
-        a1_gscale: torch.Tensor,
-        a2_gscale: torch.Tensor,
         out_dtype: torch.dtype,
-        quant_dtype: Union[torch.dtype, str, None],
+        quant_config: FusedMoEQuantConfig,
         ep_rank: int = 0,
         ep_size: int = 1,
         tp_rank: int = 0,
         tp_size: int = 1,
     ):
-        super().__init__(
-            FusedMoEQuantConfig(
-                quant_dtype=quant_dtype,
-                per_act_token_quant=False,
-                block_shape=None,
-            ))
-        assert quant_dtype in ("nvfp4", torch.float8_e4m3fn), (
+        super().__init__(quant_config)
+        assert quant_config.quant_dtype in ("nvfp4", torch.float8_e4m3fn), (
             "Only nvfp4,fp8 quantization are currently supported.")
         self.ep_rank = ep_rank
         self.ep_size = ep_size
         self.tp_rank = tp_rank
         self.tp_size = tp_size
-        self.g1_alphas = g1_alphas
-        self.g2_alphas = g2_alphas
-        self.a1_gscale = a1_gscale
-        self.a2_gscale = a2_gscale
         self.out_dtype = out_dtype
 
     @property
@@ -141,12 +128,7 @@ class FlashInferExperts(mk.FusedMoEPermuteExpertsUnpermute):
         activation: str,
         global_num_experts: int,
         expert_map: Optional[torch.Tensor],
-        w1_scale: Optional[torch.Tensor],
-        w2_scale: Optional[torch.Tensor],
-        w1_zp: Optional[torch.Tensor],
-        w2_zp: Optional[torch.Tensor],
         a1q_scale: Optional[torch.Tensor],
-        a2_scale: Optional[torch.Tensor],  # Not used
         workspace13: Optional[torch.Tensor],
         workspace2: Optional[torch.Tensor],
         expert_tokens_meta: Optional[mk.ExpertTokensMetadata],
@@ -162,17 +144,17 @@ class FlashInferExperts(mk.FusedMoEPermuteExpertsUnpermute):
             fc2_expert_weights = w2
         else:
             # Ensure w1_scale and w2_scale are not None before calling view
-            assert w1_scale is not None and w2_scale is not None, (
+            assert self.w1_scale is not None and self.w2_scale is not None, (
                 "w1_scale and w2_scale must not "
                 "be None for FlashInferExperts")
             # Flashinfer CUTLASS kernel takes scalar global scales,
             # min because inv_scale.
             quant_scales = [
                 self.a1_gscale,
-                w1_scale.view(torch.int32),
+                self.w1_scale.view(torch.int32),
                 self.g1_alphas,
                 self.a2_gscale,
-                w2_scale.view(torch.int32),
+                self.w2_scale.view(torch.int32),
                 self.g2_alphas,
             ]
             # FlashInfer API requires weight to be long for nvfp4
@@ -202,12 +184,7 @@ def flashinfer_cutlass_moe_fp4(
     w2: torch.Tensor,
     topk_weights: torch.Tensor,
     topk_ids: torch.Tensor,
-    w1_scale: torch.Tensor,
-    w2_scale: torch.Tensor,
-    g1_alphas: torch.Tensor,
-    g2_alphas: torch.Tensor,
-    a1_gscale: torch.Tensor,
-    a2_gscale: torch.Tensor,
+    quant_config: FusedMoEQuantConfig,
     inplace: bool = False,
     activation: str = "silu",
     global_num_experts: int = -1,
@@ -216,15 +193,10 @@ def flashinfer_cutlass_moe_fp4(
 ) -> torch.Tensor:
 
     fused_experts = mk.FusedMoEModularKernel(
-        FlashInferCutlassMoEPrepareAndFinalize(use_dp=False,
-                                               a1_gscale=a1_gscale),
+        FlashInferCutlassMoEPrepareAndFinalize(use_dp=False),
         FlashInferExperts(
-            g1_alphas=g1_alphas,
-            g2_alphas=g2_alphas,
-            a1_gscale=a1_gscale,
-            a2_gscale=a2_gscale,
             out_dtype=hidden_states.dtype,
-            quant_dtype="nvfp4",
+            quant_config=quant_config,
         ))
 
     return fused_experts(
@@ -237,7 +209,5 @@ def flashinfer_cutlass_moe_fp4(
         activation=activation,
         global_num_experts=global_num_experts,
         expert_map=expert_map,
-        w1_scale=w1_scale,
-        w2_scale=w2_scale,
         apply_router_weight_on_input=apply_router_weight_on_input,
     )

vllm/model_executor/layers/fused_moe/flashinfer_cutlass_prepare_finalize.py

@@ -22,13 +22,11 @@ class FlashInferCutlassMoEPrepareAndFinalize(mk.FusedMoEPrepareAndFinalize):
     def __init__(
         self,
         use_dp: bool,
-        a1_gscale: Optional[torch.Tensor],
         num_dispatchers: int = 1,
     ):
         super().__init__()
         self.num_dispatchers_ = num_dispatchers
         self.use_dp = use_dp
-        self.a1_gscale = a1_gscale
         self.local_tokens = None
 
     @property
@@ -47,14 +45,11 @@ class FlashInferCutlassMoEPrepareAndFinalize(mk.FusedMoEPrepareAndFinalize):
     def prepare(
         self,
         a1: torch.Tensor,
-        a1_scale: Optional[torch.Tensor],  # Not used
-        a2_scale: Optional[torch.Tensor],  # Not used
         topk_weights: torch.Tensor,
         topk_ids: torch.Tensor,
         num_experts: int,
         expert_map: Optional[torch.Tensor],
         apply_router_weight_on_input: bool,
-        # TODO(bnell): use quant_config + scales instead of ctor args
         quant_config: FusedMoEQuantConfig,
     ) -> mk.PrepareResultType:
 
@@ -67,7 +62,7 @@ class FlashInferCutlassMoEPrepareAndFinalize(mk.FusedMoEPrepareAndFinalize):
 
         a1q, a1q_scale = moe_kernel_quantize_input(
             a1,
-            self.a1_gscale,
+            quant_config.a1_gscale,
             quant_config.quant_dtype,
             quant_config.per_act_token_quant,
             quant_config.block_shape,

vllm/model_executor/layers/fused_moe/flashinfer_trtllm_moe.py

+# SPDX-License-Identifier: Apache-2.0
+# SPDX-FileCopyrightText: Copyright contributors to the vLLM project
+from typing import List  # noqa: UP035
+from typing import Optional
+
+import torch
+
+from vllm.model_executor.layers.fused_moe.utils import (
+    moe_kernel_quantize_input)
+from vllm.model_executor.layers.quantization.utils.flashinfer_utils import (
+    calculate_tile_tokens_dim)
+from vllm.model_executor.layers.quantization.utils.fp8_utils import (
+    per_token_group_quant_fp8)
+from vllm.utils import direct_register_custom_op
+
+
+def flashinfer_fused_moe_blockscale_fp8(
+        routing_logits: torch.Tensor,
+        routing_bias: torch.Tensor,
+        x: torch.Tensor,
+        w13_weight: torch.Tensor,
+        w13_weight_scale_inv: torch.Tensor,
+        w2_weight: torch.Tensor,
+        w2_weight_scale_inv: torch.Tensor,
+        global_num_experts: int,
+        top_k: int,
+        num_expert_group: int,
+        topk_group: int,
+        intermediate_size: int,
+        expert_offset: int,
+        local_num_experts: int,
+        block_shape: List[int],  #noqa: UP006
+        routed_scaling: float = 1.0) -> torch.Tensor:
+    from vllm.utils.flashinfer import flashinfer_trtllm_fp8_block_scale_moe
+    assert top_k <= global_num_experts
+    assert top_k <= 8
+    assert topk_group <= 4
+    assert global_num_experts > num_expert_group
+    assert global_num_experts % num_expert_group == 0
+    assert global_num_experts % 4 == 0
+    assert top_k < (topk_group * global_num_experts / num_expert_group)
+    assert block_shape == [128, 128]
+
+    a_q, a_sf = per_token_group_quant_fp8(x, block_shape[1])
+    # NOTE: scales of hidden states have to be transposed!
+    a_sf_t = a_sf.t().contiguous()
+    return flashinfer_trtllm_fp8_block_scale_moe(
+        routing_logits=routing_logits,
+        routing_bias=routing_bias,
+        hidden_states=a_q,
+        hidden_states_scale=a_sf_t,
+        gemm1_weights=w13_weight,
+        gemm1_weights_scale=w13_weight_scale_inv,
+        gemm2_weights=w2_weight,
+        gemm2_weights_scale=w2_weight_scale_inv,
+        num_experts=global_num_experts,
+        top_k=top_k,
+        n_group=num_expert_group,
+        topk_group=topk_group,
+        intermediate_size=intermediate_size,
+        local_expert_offset=expert_offset,
+        local_num_experts=local_num_experts,
+        routed_scaling_factor=routed_scaling,
+        tile_tokens_dim=calculate_tile_tokens_dim(x.shape[0], top_k,
+                                                  global_num_experts),
+        routing_method_type=2,  # DeepSeek-styled routing method
+        use_shuffled_weight=False,
+    )
+
+
+def flashinfer_fused_moe_blockscale_fp8_fake(
+        routing_logits: torch.Tensor,
+        routing_bias: torch.Tensor,
+        x: torch.Tensor,
+        w13_weight: torch.Tensor,
+        w13_weight_scale_inv: torch.Tensor,
+        w2_weight: torch.Tensor,
+        w2_weight_scale_inv: torch.Tensor,
+        global_num_experts: int,
+        top_k: int,
+        num_expert_group: int,
+        topk_group: int,
+        intermediate_size: int,
+        expert_offset: int,
+        local_num_experts: int,
+        block_shape: list[int],
+        routed_scaling: float = 1.0) -> torch.Tensor:
+    return torch.empty_like(x)
+
+
+# TODO(bnell): Does this really need to be a torch.op?
+direct_register_custom_op(
+    op_name="flashinfer_fused_moe_blockscale_fp8",
+    op_func=flashinfer_fused_moe_blockscale_fp8,
+    mutates_args=[],
+    fake_impl=flashinfer_fused_moe_blockscale_fp8_fake,
+    tags=(torch.Tag.needs_fixed_stride_order, ),
+)
+
+
+def flashinfer_fused_moe_per_tensor_scale_fp8(
+        routing_logits: torch.Tensor,
+        routing_bias: Optional[torch.Tensor],
+        hidden_states: torch.Tensor,
+        input_scale: torch.Tensor,
+        gemm1_weights: torch.Tensor,
+        gemm2_weights: torch.Tensor,
+        output1_scales_scalar: torch.Tensor,
+        output1_scales_gate_scalar: torch.Tensor,
+        output2_scales_scalar: torch.Tensor,
+        num_experts: int,
+        top_k: int,
+        num_expert_group: Optional[int],
+        topk_group: Optional[int],
+        intermediate_size: int,
+        local_expert_offset: int,
+        local_num_experts: int,
+        use_routing_scales_on_input: bool,
+        routing_method_type: int,
+        routed_scaling_factor: float = 1.0) -> torch.Tensor:
+    num_expert_group = num_expert_group if num_expert_group is not None else 0
+    topk_group = topk_group if topk_group is not None else 0
+
+    quant_hidden_states, _ = moe_kernel_quantize_input(
+        hidden_states,
+        input_scale,
+        quant_dtype=torch.float8_e4m3fn,
+        per_act_token_quant=False)
+
+    from vllm.utils.flashinfer import (
+        flashinfer_trtllm_fp8_per_tensor_scale_moe)
+    return flashinfer_trtllm_fp8_per_tensor_scale_moe(
+        routing_logits=routing_logits,
+        routing_bias=routing_bias,
+        hidden_states=quant_hidden_states,
+        gemm1_weights=gemm1_weights,
+        output1_scales_scalar=output1_scales_scalar,
+        output1_scales_gate_scalar=output1_scales_gate_scalar,
+        gemm2_weights=gemm2_weights,
+        output2_scales_scalar=output2_scales_scalar,
+        num_experts=num_experts,
+        top_k=top_k,
+        n_group=num_expert_group,
+        topk_group=topk_group,
+        intermediate_size=intermediate_size,
+        local_expert_offset=local_expert_offset,
+        local_num_experts=local_num_experts,
+        routed_scaling_factor=routed_scaling_factor,
+        use_routing_scales_on_input=use_routing_scales_on_input,
+        tile_tokens_dim=calculate_tile_tokens_dim(hidden_states.shape[0],
+                                                  top_k, num_experts),
+        routing_method_type=routing_method_type)
+
+
+def flashinfer_fused_moe_per_tensor_scale_fp8_fake(
+        routing_logits: torch.Tensor,
+        routing_bias: Optional[torch.Tensor],
+        hidden_states: torch.Tensor,
+        input_scale: torch.Tensor,
+        gemm1_weights: torch.Tensor,
+        gemm2_weights: torch.Tensor,
+        output1_scales_scalar: torch.Tensor,
+        output1_scales_gate_scalar: torch.Tensor,
+        output2_scales_scalar: torch.Tensor,
+        num_experts: int,
+        top_k: int,
+        num_expert_group: Optional[int],
+        topk_group: Optional[int],
+        intermediate_size: int,
+        local_expert_offset: int,
+        local_num_experts: int,
+        use_routing_scales_on_input: bool,
+        routing_method_type: int,
+        routed_scaling_factor: float = 1.0) -> torch.Tensor:
+    return torch.empty_like(hidden_states)
+
+
+# TODO(bnell): Does this really need to be a torch.op?
+direct_register_custom_op(
+    op_name="flashinfer_fused_moe_per_tensor_scale_fp8",
+    op_func=flashinfer_fused_moe_per_tensor_scale_fp8,
+    mutates_args=["hidden_states"],
+    fake_impl=flashinfer_fused_moe_per_tensor_scale_fp8_fake,
+    tags=(torch.Tag.needs_fixed_stride_order, ),
+)

vllm/model_executor/layers/fused_moe/fused_batched_moe.py

@@ -8,7 +8,7 @@ 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.model_executor.layers.fused_moe.fused_moe import (
-    get_config_dtype_str, try_get_optimal_moe_config)
+    try_get_optimal_moe_config)
 from vllm.model_executor.layers.fused_moe.topk_weight_and_reduce import (
     TopKWeightAndReduceDelegate, TopKWeightAndReduceNaiveBatched)
 from vllm.model_executor.layers.fused_moe.utils import (
@@ -498,8 +498,6 @@ class BatchedPrepareAndFinalize(mk.FusedMoEPrepareAndFinalize):
     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,
@@ -545,14 +543,13 @@ class BatchedPrepareAndFinalize(mk.FusedMoEPrepareAndFinalize):
                                      dtype=torch.float32,
                                      device=a1.device)
         else:
-            assert a1_scale is None
+            assert quant_config.a1_scale is None
             b_a1_scale = None
 
         first_expert = num_local_experts * self.rank
         last_expert = first_expert + num_local_experts
 
-        a1_scale = normalize_scales_shape(a1_scale)
-        a2_scale = normalize_scales_shape(a2_scale)
+        a1_scale = normalize_scales_shape(quant_config.a1_scale)
 
         for expert_id in range(first_expert, last_expert):
             topks = torch.any(topk_ids == expert_id, dim=1).flatten()
@@ -623,28 +620,13 @@ class NaiveBatchedExperts(mk.FusedMoEPermuteExpertsUnpermute):
         self,
         max_num_tokens: int,
         num_dispatchers: int,
-        use_fp8_w8a8: bool = False,
-        use_int8_w8a8: bool = False,
-        use_int8_w8a16: bool = False,
-        use_int4_w4a16: bool = False,
-        use_mxfp4_w4a4: bool = False,
-        block_shape: Optional[list[int]] = None,
-        per_act_token_quant: bool = False,
+        quant_config: FusedMoEQuantConfig,
     ):
-        super().__init__(
-            FusedMoEQuantConfig.make(
-                use_fp8_w8a8=use_fp8_w8a8,
-                use_int8_w8a8=use_int8_w8a8,
-                use_int8_w8a16=use_int8_w8a16,
-                use_int4_w4a16=use_int4_w4a16,
-                use_mxfp4_w4a4=use_mxfp4_w4a4,
-                per_act_token_quant=per_act_token_quant,
-                block_shape=block_shape,
-            ))
-        assert not use_int8_w8a8, "NYI"
-        assert not use_int8_w8a16, "NYI"
-        assert not use_int4_w4a16, "NYI"
-        assert not use_mxfp4_w4a4, "NYI"
+        super().__init__(quant_config)
+        assert not self.quant_config.use_int8_w8a8, "NYI"
+        assert not self.quant_config.use_int8_w8a16, "NYI"
+        assert not self.quant_config.use_int4_w4a16, "NYI"
+        assert not self.quant_config.use_mxfp4_w4a4, "NYI"
         self.max_num_tokens = max_num_tokens
         self.num_dispatchers = num_dispatchers
 
@@ -705,12 +687,7 @@ class NaiveBatchedExperts(mk.FusedMoEPermuteExpertsUnpermute):
         activation: str,
         global_num_experts: int,
         expert_map: Optional[torch.Tensor],
-        w1_scale: Optional[torch.Tensor],
-        w2_scale: Optional[torch.Tensor],
-        w1_zp: Optional[torch.Tensor],
-        w2_zp: Optional[torch.Tensor],
         a1q_scale: Optional[torch.Tensor],
-        a2_scale: Optional[torch.Tensor],
         workspace13: torch.Tensor,
         workspace2: torch.Tensor,
         expert_tokens_meta: Optional[mk.ExpertTokensMetadata],
@@ -740,10 +717,10 @@ class NaiveBatchedExperts(mk.FusedMoEPermuteExpertsUnpermute):
             tmp = _resize_cache(workspace2, (num, N))
 
             if self.quant_config.is_quantized:
-                assert a1q_scale is not None and w1_scale is not None
+                assert a1q_scale is not None and self.w1_scale is not None
                 input = self.dequant(hidden_states[expert, :, :],
                                      a1q_scale[expert])
-                w1_dq = self.dequant(w1[expert], w1_scale[expert])
+                w1_dq = self.dequant(w1[expert], self.w1_scale[expert])
                 input = input[:num] @ w1_dq.transpose(0, 1)
             else:
                 input = hidden_states[expert, :num, :] @ w1[expert].transpose(
@@ -752,8 +729,8 @@ class NaiveBatchedExperts(mk.FusedMoEPermuteExpertsUnpermute):
             self.activation(activation, tmp, input.to(tmp.dtype))
 
             if self.quant_config.is_quantized:
-                assert w2_scale is not None
-                w2_dq = self.dequant(w2[expert], w2_scale[expert])
+                assert self.w2_scale is not None
+                w2_dq = self.dequant(w2[expert], self.w2_scale[expert])
             else:
                 w2_dq = w2[expert]
 
@@ -840,35 +817,15 @@ class BatchedTritonExperts(mk.FusedMoEPermuteExpertsUnpermute):
         self,
         max_num_tokens: int,
         num_dispatchers: int,
-        use_fp8_w8a8: bool = False,
-        use_int8_w8a8: bool = False,
-        use_int8_w8a16: bool = False,
-        use_int4_w4a16: bool = False,
-        use_mxfp4_w4a4: bool = False,
-        per_act_token_quant: bool = False,
-        block_shape: Optional[list[int]] = None,
+        quant_config: FusedMoEQuantConfig,
     ):
-        super().__init__(
-            FusedMoEQuantConfig.make(
-                use_fp8_w8a8=use_fp8_w8a8,
-                use_int8_w8a8=use_int8_w8a8,
-                use_int8_w8a16=use_int8_w8a16,
-                use_int4_w4a16=use_int4_w4a16,
-                use_mxfp4_w4a4=use_mxfp4_w4a4,
-                per_act_token_quant=per_act_token_quant,
-                block_shape=block_shape,
-            ))
-        assert not use_int8_w8a8, "NYI"
-        assert not use_int8_w8a16, "NYI"
-        assert not use_int4_w4a16, "NYI"
-        assert not use_mxfp4_w4a4, "NYI"
+        super().__init__(quant_config)
+        assert not self.quant_config.use_int8_w8a8, "NYI"
+        assert not self.quant_config.use_int8_w8a16, "NYI"
+        assert not self.quant_config.use_int4_w4a16, "NYI"
+        assert not self.quant_config.use_mxfp4_w4a4, "NYI"
         assert max_num_tokens > 0
         assert num_dispatchers > 0
-        self.use_fp8_w8a8 = use_fp8_w8a8
-        self.use_int8_w8a8 = use_int8_w8a8
-        self.use_int4_w4a16 = use_int4_w4a16
-        self.use_int8_w8a16 = use_int8_w8a16
-        self.use_mxfp4_w4a4 = use_mxfp4_w4a4
         self.max_num_tokens = max_num_tokens
         self.num_dispatchers = num_dispatchers
 
@@ -921,19 +878,14 @@ class BatchedTritonExperts(mk.FusedMoEPermuteExpertsUnpermute):
         activation: str,
         global_num_experts: int,
         expert_map: Optional[torch.Tensor],
-        w1_scale: Optional[torch.Tensor],
-        w2_scale: Optional[torch.Tensor],
-        w1_zp: Optional[torch.Tensor],
-        w2_zp: Optional[torch.Tensor],
         a1q_scale: Optional[torch.Tensor],
-        a2_scale: Optional[torch.Tensor],
         workspace13: torch.Tensor,
         workspace2: torch.Tensor,
         expert_tokens_meta: Optional[mk.ExpertTokensMetadata],
         apply_router_weight_on_input: bool,
     ):
         # Check constraints.
-        if self.use_int4_w4a16:
+        if self.quant_config.use_int4_w4a16:
             assert hidden_states.size(-1) // 2 == w1.size(2), (
                 "Hidden size mismatch")
         else:
@@ -958,11 +910,7 @@ class BatchedTritonExperts(mk.FusedMoEPermuteExpertsUnpermute):
         assert w1.size(0) == E
         assert w2.size(0) == E
 
-        config_dtype = get_config_dtype_str(use_fp8_w8a8=self.use_fp8_w8a8,
-                                            use_int8_w8a16=self.use_int8_w8a16,
-                                            use_int4_w4a16=self.use_int4_w4a16,
-                                            use_mxfp4_w4a4=self.use_mxfp4_w4a4,
-                                            dtype=hidden_states.dtype)
+        config_dtype = self.quant_config.config_name(hidden_states.dtype)
 
         config = try_get_optimal_moe_config(
             w1.size(),
@@ -992,7 +940,8 @@ class BatchedTritonExperts(mk.FusedMoEPermuteExpertsUnpermute):
         intermediate_cache2 = _resize_cache(workspace2,
                                             (E, max_num_tokens, N // 2))
 
-        if self.use_fp8_w8a8:
+        # TODO(bnell): should this be done for any quantized type?
+        if self.quant_config.use_fp8_w8a8:
             intermediate_cache1.fill_(0)
 
         a1q_scale = normalize_batched_scales_shape(a1q_scale, E)
@@ -1005,11 +954,11 @@ class BatchedTritonExperts(mk.FusedMoEPermuteExpertsUnpermute):
             expert_num_tokens=expert_num_tokens,
             compute_type=compute_type,
             A_scale=a1q_scale,
-            B_scale=w1_scale,
-            B_zp=w1_zp,
-            use_fp8_w8a8=self.use_fp8_w8a8,
-            use_int8_w8a16=self.use_int8_w8a16,
-            use_int4_w4a16=self.use_int4_w4a16,
+            B_scale=self.w1_scale,
+            B_zp=self.w1_zp,
+            use_fp8_w8a8=self.quant_config.use_fp8_w8a8,
+            use_int8_w8a16=self.quant_config.use_int8_w8a16,
+            use_int4_w4a16=self.quant_config.use_int4_w4a16,
             config=config,
             per_act_token_quant=self.per_act_token_quant,
             block_shape=self.block_shape)
@@ -1021,7 +970,7 @@ class BatchedTritonExperts(mk.FusedMoEPermuteExpertsUnpermute):
                         intermediate_cache1.view(-1, N))
 
         qintermediate_cache2, a2q_scale = batched_moe_kernel_quantize_input(
-            intermediate_cache2, a2_scale, max_num_tokens, E, N,
+            intermediate_cache2, self.a2_scale, max_num_tokens, E, N,
             expert_num_tokens, self.quant_dtype, self.per_act_token_quant,
             self.block_shape)
 
@@ -1032,11 +981,11 @@ class BatchedTritonExperts(mk.FusedMoEPermuteExpertsUnpermute):
             expert_num_tokens=expert_num_tokens,
             compute_type=compute_type,
             A_scale=a2q_scale,
-            B_scale=w2_scale,
-            B_zp=w2_zp,
-            use_fp8_w8a8=self.use_fp8_w8a8,
-            use_int8_w8a16=self.use_int8_w8a16,
-            use_int4_w4a16=self.use_int4_w4a16,
+            B_scale=self.w2_scale,
+            B_zp=self.w2_zp,
+            use_fp8_w8a8=self.quant_config.use_fp8_w8a8,
+            use_int8_w8a16=self.quant_config.use_int8_w8a16,
+            use_int4_w4a16=self.quant_config.use_int4_w4a16,
             config=config,
             per_act_token_quant=self.per_act_token_quant,
             block_shape=self.block_shape)

vllm/model_executor/layers/fused_moe/gpt_oss_triton_kernels_moe.py

 # SPDX-License-Identifier: Apache-2.0
 # SPDX-FileCopyrightText: Copyright contributors to the vLLM project
-from typing import TYPE_CHECKING, Optional
+from typing import Optional
 
 import torch
 
 import vllm.model_executor.layers.fused_moe.modular_kernel as mk
 from vllm.logger import init_logger
+from vllm.model_executor.layers.fused_moe.config import (
+    FUSED_MOE_UNQUANTIZED_CONFIG, FusedMoEQuantConfig)
 from vllm.model_executor.layers.fused_moe.topk_weight_and_reduce import (
     TopKWeightAndReduceDelegate)
 from vllm.utils import has_triton_kernels
@@ -23,9 +25,6 @@ if has_triton_kernels():
             "Failed to import Triton kernels. Please make sure your triton "
             "version is compatible.")
 
-if TYPE_CHECKING:
-    from triton_kernels.matmul_ogs import PrecisionConfig
-
 
 def triton_kernel_moe_forward(
     hidden_states: torch.Tensor,
@@ -35,20 +34,10 @@ def triton_kernel_moe_forward(
     topk: int,
     renormalize: bool,
     activation: str = "silu",
+    quant_config: Optional[FusedMoEQuantConfig] = None,
     apply_router_weight_on_input: bool = False,
-    use_fp8_w8a8: bool = False,
-    per_channel_quant: bool = False,
     global_num_experts: int = -1,
     expert_map: Optional[torch.Tensor] = None,
-    w1_scale: Optional[torch.Tensor] = None,
-    w2_scale: Optional[torch.Tensor] = None,
-    w1_bias: Optional[torch.Tensor] = None,
-    w2_bias: Optional[torch.Tensor] = None,
-    w1_precision: Optional["PrecisionConfig"] = None,
-    w2_precision: Optional["PrecisionConfig"] = None,
-    a1_scale: Optional[torch.Tensor] = None,
-    a2_scale: Optional[torch.Tensor] = None,
-    block_shape: Optional[list[int]] = None,
 ) -> torch.Tensor:
 
     routing_data, gather_idx, scatter_idx = routing(gating_output,
@@ -64,20 +53,10 @@ def triton_kernel_moe_forward(
         gather_idx,
         scatter_idx,
         activation=activation,
+        quant_config=quant_config,
         apply_router_weight_on_input=apply_router_weight_on_input,
-        use_fp8_w8a8=use_fp8_w8a8,
-        per_channel_quant=per_channel_quant,
         global_num_experts=global_num_experts,
-        expert_map=expert_map,
-        w1_scale=w1_scale,
-        w2_scale=w2_scale,
-        w1_bias=w1_bias,
-        w2_bias=w2_bias,
-        w1_precision=w1_precision,
-        w2_precision=w2_precision,
-        a1_scale=a1_scale,
-        a2_scale=a2_scale,
-        block_shape=block_shape)
+        expert_map=expert_map)
 
 
 # This is a triton implementation of the fused_experts function
@@ -90,28 +69,23 @@ def triton_kernel_fused_experts(
     gather_indx,  # GatherIndx
     scatter_indx,  # ScatterIndx
     activation: str = "silu",
+    quant_config: Optional[FusedMoEQuantConfig] = None,
     swiglu_alpha: float = 1.702,
     swiglu_limit: float = 7.0,
     apply_router_weight_on_input: bool = False,
-    use_fp8_w8a8: bool = False,
-    per_channel_quant: bool = False,
     global_num_experts: int = -1,
     expert_map: Optional[torch.Tensor] = None,
-    w1_scale: Optional[torch.Tensor] = None,
-    w2_scale: Optional[torch.Tensor] = None,
-    w1_bias: Optional[torch.Tensor] = None,
-    w2_bias: Optional[torch.Tensor] = None,
-    w1_precision: Optional["PrecisionConfig"] = None,
-    w2_precision: Optional["PrecisionConfig"] = None,
-    a1_scale: Optional[torch.Tensor] = None,
-    a2_scale: Optional[torch.Tensor] = None,
-    block_shape: Optional[list[int]] = None,
+    a1q_scale: Optional[torch.Tensor] = None,
 ) -> torch.Tensor:
+    if quant_config is None:
+        quant_config = FUSED_MOE_UNQUANTIZED_CONFIG
 
     # type check, uint8 means mxfp4
     assert hidden_states.dtype == torch.bfloat16
-    assert w1_bias is None or w1_bias.dtype == torch.float32
-    assert w2_bias is None or w2_bias.dtype == torch.float32
+    assert (quant_config.w1_bias is None
+            or quant_config.w1_bias.dtype == torch.float32)
+    assert (quant_config.w2_bias is None
+            or quant_config.w2_bias.dtype == torch.float32)
 
     # Shape check, only check non-mxfp4
     assert hidden_states.shape[-1] == w1.shape[-2]
@@ -130,20 +104,20 @@ def triton_kernel_fused_experts(
     intermediate_cache1 = matmul_ogs(
         hidden_states,
         w1,
-        w1_bias,
+        quant_config.w1_bias,
         routing_data,
         gather_indx=gather_indx,
-        precision_config=w1_precision,
+        precision_config=quant_config.w1_precision,
         gammas=gammas if apply_router_weight_on_input else None,
         fused_activation=act)
 
     intermediate_cache3 = matmul_ogs(
         intermediate_cache1,
         w2,
-        w2_bias,
+        quant_config.w2_bias,
         routing_data,
         scatter_indx=scatter_indx,
-        precision_config=w2_precision,
+        precision_config=quant_config.w2_precision,
         gammas=None if apply_router_weight_on_input else gammas,
         y=output_tensor,
     )
@@ -154,21 +128,13 @@ class BatchedOAITritonExperts(mk.FusedMoEPermuteExpertsUnpermute):
 
     def __init__(
         self,
-        quant_config,
         max_num_tokens: int,
         num_dispatchers: int,
-        w1_precision: "PrecisionConfig",
-        w2_precision: "PrecisionConfig",
-        w1_bias: Optional[torch.Tensor],
-        w2_bias: Optional[torch.Tensor],
+        quant_config: FusedMoEQuantConfig,
     ):
         super().__init__(quant_config)
         self.max_num_tokens = max_num_tokens
         self.num_dispatchers = num_dispatchers
-        self.w1_precision = w1_precision
-        self.w2_precision = w2_precision
-        self.w1_bias = w1_bias
-        self.w2_bias = w2_bias
 
     @property
     def activation_formats(
@@ -212,12 +178,7 @@ class BatchedOAITritonExperts(mk.FusedMoEPermuteExpertsUnpermute):
         activation: str,
         global_num_experts: int,
         expert_map: Optional[torch.Tensor],
-        w1_scale: Optional[torch.Tensor],
-        w2_scale: Optional[torch.Tensor],
-        w1_zp: Optional[torch.Tensor],
-        w2_zp: Optional[torch.Tensor],
         a1q_scale: Optional[torch.Tensor],
-        a2_scale: Optional[torch.Tensor],
         workspace13: torch.Tensor,
         workspace2: torch.Tensor,
         expert_tokens_meta: Optional[mk.ExpertTokensMetadata],
@@ -228,20 +189,12 @@ class BatchedOAITritonExperts(mk.FusedMoEPermuteExpertsUnpermute):
             hidden_states,
             w1,
             w2,
-            None,
-            None,
-            None,
+            routing_data=None,
+            gather_indx=None,
+            scatter_indx=None,
             activation=activation,
+            quant_config=self.quant_config,
             apply_router_weight_on_input=False,
-            use_fp8_w8a8=False,
-            per_channel_quant=False,
             global_num_experts=global_num_experts,
             expert_map=expert_map,
-            w1_scale=w1_scale,
-            w2_scale=w2_scale,
-            w1_bias=self.w1_bias,
-            w2_bias=self.w2_bias,
-            w1_precision=self.w1_precision,
-            w2_precision=self.w2_precision,
-            a1_scale=a1q_scale,
-            a2_scale=a2_scale)
+            a1q_scale=a1q_scale)