adaptation w4A8 quantization

python/sglang/bench_serving.py

@@ -839,12 +839,10 @@ class BenchmarkMetrics:
     mean_ttft_ms: float
     median_ttft_ms: float
     std_ttft_ms: float
-    p95_ttft_ms: float
     p99_ttft_ms: float
     mean_tpot_ms: float
     median_tpot_ms: float
     std_tpot_ms: float
-    p95_tpot_ms: float
     p99_tpot_ms: float
     mean_itl_ms: float
     median_itl_ms: float
@@ -1667,12 +1665,10 @@ def calculate_metrics(
         * 1000,  # ttfts is empty if streaming is not supported by backend
         median_ttft_ms=np.median(ttfts or 0) * 1000,
         std_ttft_ms=np.std(ttfts or 0) * 1000,
-        p95_ttft_ms=np.percentile(ttfts or 0, 95) * 1000,
         p99_ttft_ms=np.percentile(ttfts or 0, 99) * 1000,
         mean_tpot_ms=np.mean(tpots or 0) * 1000,
         median_tpot_ms=np.median(tpots or 0) * 1000,
         std_tpot_ms=np.std(tpots or 0) * 1000,
-        p95_tpot_ms=np.percentile(tpots or 0, 95) * 1000,
         p99_tpot_ms=np.percentile(tpots or 0, 99) * 1000,
         mean_itl_ms=np.mean(itls or 0) * 1000,
         median_itl_ms=np.median(itls or 0) * 1000,
@@ -1978,12 +1974,6 @@ async def benchmark(
     print("{:<40} {:<10.2f}".format("Mean TTFT (ms):", metrics.mean_ttft_ms))
     print("{:<40} {:<10.2f}".format("Median TTFT (ms):", metrics.median_ttft_ms))
     print("{:<40} {:<10.2f}".format("P99 TTFT (ms):", metrics.p99_ttft_ms))
-    print("{:<40} {:<10.2f}".format("P95 TTFT (ms):", metrics.p95_ttft_ms))
-    print("{s:{c}^{n}}".format(s="Time per Output Token (excl. 1st token)", n=50, c="-"))
-    print("{:<40} {:<10.2f}".format("Mean TPOT (ms):", metrics.mean_tpot_ms))
-    print("{:<40} {:<10.2f}".format("Median TPOT (ms):", metrics.median_tpot_ms))
-    print("{:<40} {:<10.2f}".format("P99 TPOT (ms):", metrics.p99_tpot_ms))
-    print("{:<40} {:<10.2f}".format("P95 TPOT (ms):", metrics.p95_tpot_ms))
     print("{s:{c}^{n}}".format(s="Inter-Token Latency", n=50, c="-"))
     print("{:<40} {:<10.2f}".format("Mean ITL (ms):", metrics.mean_itl_ms))
     print("{:<40} {:<10.2f}".format("Median ITL (ms):", metrics.median_itl_ms))

python/sglang/srt/_custom_ops.py

@@ -22,11 +22,9 @@ use_vllm_custom_allreduce = get_bool_env_var(
 
 if not is_hpu():
     # ROCm does not use vllm custom allreduce
-    # if use_vllm_custom_allreduce and not is_hip():
+    if use_vllm_custom_allreduce and not is_hip():
-    if use_vllm_custom_allreduce:
         try:
             import vllm._C  # noqa: F401
-            print("[DEBUG] ✅ Using vLLM custom allreduce (vllm._C successfully imported)")
         except ImportError as e:
             logger.warning("Failed to import from vllm._C with %r", e)
     else:
@@ -36,11 +34,9 @@ if not is_hpu():
             logger.warning("Failed to import from custom_ar with %r", e)
 
 
-# if not is_hip() and not is_npu():
+if not is_hip() and not is_npu():
-if not is_npu():
     if use_vllm_custom_allreduce:
         custom_op = torch.ops._C_custom_ar
-        print("[DEBUG] ✅ custom_op = torch.ops._C_custom_ar (vLLM path active)")
     else:
         custom_op = sgl_kernel.allreduce
 

python/sglang/srt/configs/model_config.py

@@ -614,8 +614,6 @@ class ModelConfig:
             "petit_nvfp4",
             "quark",
             "mxfp4",
-            "slimquant_w4a8_marlin",
-            "w8a8_int8",
         ]
         optimized_quantization_methods = [
             "fp8",
@@ -635,7 +633,6 @@ class ModelConfig:
             "qoq",
             "w4afp8",
             "petit_nvfp4",
-            "slimquant_w4a8_marlin",
         ]
         compatible_quantization_methods = {
             "modelopt_fp4": ["modelopt"],

python/sglang/srt/distributed/device_communicators/custom_all_reduce.py

@@ -27,8 +27,7 @@ _is_hip = is_hip()
 
 
 try:
-    # if ops.use_vllm_custom_allreduce and not _is_hip:
+    if ops.use_vllm_custom_allreduce and not _is_hip:
-    if ops.use_vllm_custom_allreduce:
         # Use vLLM custom allreduce
         ops.meta_size()
     else:

python/sglang/srt/layers/layernorm.py

@@ -169,14 +169,6 @@ class RMSNorm(CustomOp):
             try:
                 output = torch.empty_like(x)
                 residual_out = torch.empty_like(x)
-                fused_add_rms_norm(
-                    x,
-                    residual,
-                    self.weight.data,
-                    self.variance_epsilon,
-                )
-                return x, residual
-            except TypeError:
                 fused_add_rms_norm(
                     output,
                     x,
@@ -186,7 +178,14 @@ class RMSNorm(CustomOp):
                     self.variance_epsilon,
                 )
                 return output, residual_out
-                
+            except TypeError:
+                fused_add_rms_norm(
+                    x,
+                    residual,
+                    self.weight.data,
+                    self.variance_epsilon,
+                )
+                return x, residual
 
         out = torch.empty_like(x)
         rms_norm(out, x, self.weight.data, self.variance_epsilon)

python/sglang/srt/layers/moe/fused_moe_triton/fused_moe_triton_kernels.py

@@ -14,10 +14,9 @@ from sglang.srt.layers.quantization.fp8_kernel import (
 )
 from sglang.srt.layers.quantization.int8_kernel import (
     per_token_group_quant_int8,
-    # per_token_quant_int8,
+    per_token_quant_int8,
     sglang_per_token_group_quant_int8,
 )
-from lmslim.layers.gemm.int8_utils import per_token_quant_int8
 from sglang.srt.utils import (
     cpu_has_amx_support,
     get_bool_env_var,

python/sglang/srt/layers/quantization/__init__.py

@@ -57,7 +57,6 @@ from sglang.srt.layers.quantization.qoq import QoQConfig
 from sglang.srt.layers.quantization.w4afp8 import W4AFp8Config
 from sglang.srt.layers.quantization.w8a8_fp8 import W8A8Fp8Config
 from sglang.srt.layers.quantization.w8a8_int8 import W8A8Int8Config
-from sglang.srt.layers.quantization.slimquant_w4a8_marlin import SlimQuantW4A8Int8MarlinConfig
 from sglang.srt.utils import is_cuda, is_hip, mxfp_supported
 
 _is_mxfp_supported = mxfp_supported()
@@ -84,7 +83,6 @@ BASE_QUANTIZATION_METHODS: Dict[str, Type[QuantizationConfig]] = {
     "w4afp8": W4AFp8Config,
     "petit_nvfp4": PetitNvFp4Config,
     "fbgemm_fp8": FBGEMMFp8Config,
-    "slimquant_w4a8_marlin":SlimQuantW4A8Int8MarlinConfig,
 }
 
 

python/sglang/srt/layers/quantization/slimquant_w4a8_marlin.py

@@ -1,6 +1,6 @@
 from typing import Any, Callable, Dict, List, Optional
-# from sglang.srt.layers.moe.token_dispatcher.base import CombineInput
+from sglang.srt.layers.moe.token_dispatcher.base import CombineInput
-
+from sglang.srt.layers.moe.token_dispatcher.standard import StandardCombineInput, StandardDispatchOutput
 import torch
 from sglang.srt import _custom_ops as ops
 from sglang.srt.utils import set_weight_attrs
@@ -218,9 +218,8 @@ class SlimQuantW4A8Int8MarlinMoEMethod:
     def apply(
         self,
         layer: torch.nn.Module,
-        dispatch_output,
+        dispatch_output: StandardDispatchOutput,
-    ) :
+    ) -> CombineInput:
-        from sglang.srt.layers.moe.token_dispatcher.standard import StandardCombineInput
         x = dispatch_output.hidden_states
         topk_output = dispatch_output.topk_output
         from sglang.srt.layers.moe.topk import apply_topk_weights_cpu
@@ -242,7 +241,7 @@ class SlimQuantW4A8Int8MarlinMoEMethod:
             use_int4_w4a8=True,
             per_channel_quant=True,
             activation=layer.moe_runner_config.activation,
-            # expert_map=layer.expert_map_gpu,
+            expert_map=layer.expert_map_gpu,
             apply_router_weight_on_input=self.moe_runner_config.apply_router_weight_on_input,
             global_num_experts=layer.moe_runner_config.num_experts,
             w1_scale=(layer.w13_weight_scale),

python/sglang/srt/layers/quantization/w4a8_utils.py

@@ -1,92 +0,0 @@
-import torch
-import numpy as np
-
-try:
-    from lightop import awq_marlin_repack_w4a8
-    use_lightop = False
-except Exception:
-    use_lightop = False
-
-def unpack_int8_to_int4(tensor_int8: torch.Tensor) -> torch.Tensor:
-    """
-    将[N, K//2]大小的torch.int8 Tensor，转换为[N, K]大小的torch.int32 Tensor。
-    每个int8包含两个int4，分别提取到int32的低4位，其余位为0。
-
-    Args:
-        tensor_int8 (torch.Tensor): 输入张量，形状为[N, K//2]，类型为torch.int8。
-
-    Returns:
-        torch.Tensor: 输出张量，形状为[N, K]，类型为torch.int32。
-    """
-    if tensor_int8.dtype != torch.int8:
-        raise ValueError("Input tensor must be of type torch.int8")
-
-    N, K_half = tensor_int8.shape
-    tensor_uint8 = tensor_int8.to(torch.uint8)
-    high4 = tensor_uint8 & 0x0F
-    low4 = (tensor_uint8 >> 4) & 0x0F
-    unpacked = torch.empty((N, K_half * 2), dtype=torch.int32, device=tensor_int8.device)
-    unpacked[:, 0::2] = low4.to(torch.int32)
-    unpacked[:, 1::2] = high4.to(torch.int32)
-
-    return unpacked
-
-def get_weight_perms(interleave: bool=True):
-    perm = []
-    for i in range(64):
-
-        for col in range(4):
-            cur_col = (i % 16) * 4 + col
-            for row in range(8):
-                cur_row = (i // 16) * 8 + row
-                cur_idx =  cur_row * 64 + cur_col
-                perm.append(cur_idx)
-
-    perm = np.array(perm)
-    if interleave:
-        interleave = np.array([4, 0, 5, 1, 6, 2, 7, 3])
-        perm = perm.reshape((-1, 8))[:, interleave].ravel()
-
-    perm = torch.from_numpy(perm)
-
-    return perm
-
-def marlin_weights(q_w,weight_perm,k_tile=32,n_tile=64,pack_factor=8):
-    size_k, size_n = q_w.shape
-    q_w = q_w.reshape((size_k // k_tile, k_tile, size_n // n_tile, n_tile))
-    q_w = q_w.permute((0, 2, 1, 3))
-    q_w = q_w.reshape((size_k // k_tile, size_n * k_tile))
-    q_w = q_w.reshape((-1, weight_perm.numel()))[:, weight_perm].reshape(q_w.shape)
-
-    orig_device = q_w.device
-    q_w = q_w.contiguous().to(torch.int32)
-    M, N = q_w.shape
-    assert N % pack_factor == 0, f"size_n ({N}) must be divisible by pack_factor ({pack_factor})"
-    q_packed = torch.zeros((M, N // pack_factor), dtype=torch.int32, device=orig_device)
-    for i in range(pack_factor):
-        q_packed += q_w[:, i::pack_factor] << (4 * i)
-
-    return q_packed
-
-def w4a8_2_marlin_weight(w4a8_w):
-    full_w4a8_w = unpack_int8_to_int4(w4a8_w)
-    full_w4a8_w = full_w4a8_w.T
-    weight_perm = get_weight_perms()
-    marlin_q_w = marlin_weights(full_w4a8_w, weight_perm, k_tile=32, n_tile=64, pack_factor=8)
-    return marlin_q_w
-
-def w4a8_weight_repack_impl(input):
-    if use_lightop:
-        size_batch = input.shape[0]
-        size_n = input.shape[1]
-        size_k = input.shape[2] * 2
-        output = torch.zeros((size_batch, size_k // 32, size_n * 4), device=input.device, dtype=torch.int32)
-        awq_marlin_repack_w4a8(input, output, size_batch, size_k, size_n)
-    else:
-        w_marlin_list = []
-        for e in range(input.shape[0]):
-            w_marlin_in = w4a8_2_marlin_weight(input[e])
-            w_marlin_list.append(w_marlin_in)
-        output = torch.stack(w_marlin_list, dim=0)
-
-    return output

python/sglang/srt/layers/quantization/w8a8_int8.py

@@ -22,8 +22,7 @@ from sglang.srt.layers.quantization.base_config import (
     QuantizeMethodBase,
 )
 from sglang.srt.layers.quantization.compressed_tensors.utils import should_ignore_layer
-# from sglang.srt.layers.quantization.int8_kernel import per_token_quant_int8
+from sglang.srt.layers.quantization.int8_kernel import per_token_quant_int8
-from lmslim.layers.gemm.int8_utils import per_token_quant_int8
 from sglang.srt.layers.quantization.unquant import UnquantizedLinearMethod
 from sglang.srt.utils import (
     apply_module_patch,
@@ -40,8 +39,6 @@ if TYPE_CHECKING:
         CombineInput,
         StandardDispatchOutput,
     )
-from lmslim import quant_ops
-
 
 _is_cuda = is_cuda()
 _is_cpu_amx_available = cpu_has_amx_support()
@@ -408,7 +405,7 @@ class W8A8Int8LinearMethod(LinearMethodBase):
         x_scale_2d = x_scale.view(-1, x_scale.shape[-1])
         output_shape = [*x_q.shape[:-1], layer.weight.shape[1]]
 
-        output = quant_ops.triton_scaled_mm(
+        output = int8_scaled_mm(
             x_q_2d,
             layer.weight,
             x_scale_2d,

python/sglang/srt/managers/schedule_batch.py

@@ -1618,7 +1618,7 @@ class ScheduleBatch(ScheduleBatchDisaggregationDecodeMixin):
         self.seq_lens_cpu = self.seq_lens_cpu[keep_indices]
         self.orig_seq_lens = self.orig_seq_lens[keep_indices_device]
         self.out_cache_loc = None
-        self.seq_lens_sum = self.seq_lens.sum()
+        self.seq_lens_sum = self.seq_lens.sum().item()
         self.output_ids = self.output_ids[keep_indices_device]
         self.return_logprob = any(req.return_logprob for req in self.reqs)
         if self.return_logprob:

python/sglang/srt/model_executor/model_runner.py

@@ -203,7 +203,7 @@ _is_xpu_xmx_available = xpu_has_xmx_support()
 SGLANG_CI_SMALL_KV_SIZE = os.getenv("SGLANG_CI_SMALL_KV_SIZE", None)
 
 # Detect stragger ranks in model loading
-UNBALANCED_MODEL_LOADING_TIMEOUT_S = 3600
+UNBALANCED_MODEL_LOADING_TIMEOUT_S = 300
 
 # the ratio of mamba cache pool size to max_running_requests, it will be safe when it is larger than 2 (yizhang2077)
 MAMBA_CACHE_SIZE_MAX_RUNNING_REQUESTS_RATIO = 3

python/sglang/srt/profile/prof.py

@@ -1,58 +0,0 @@
-from ctypes import *
-import os
-import time
-import threading
-
-class Prof:
-    def __init__(self):
-        self.use_roctx = os.getenv('SGLANG_HIP_PROF') is not None
-        if self.use_roctx:
-            self.lib = cdll.LoadLibrary("libroctracer64.so")
-            self.lib.roctxRangePushA.argtypes = [c_char_p]
-            self.lib.roctxRangePushA.restype = c_int
-            self.lib.roctxRangePop.restype = c_int
-        self.tm = time.perf_counter()
-        self.push_depth = {}
-
-    def StartTracer(self):
-        if self.use_roctx:
-            if self.lib is None:
-                self.lib = cdll.LoadLibrary("libroctracer64.so")
-            self.lib.roctracer_start()
-            self.roc_tracer_flag = True
-
-    def StopTracer(self):
-        if self.use_roctx:
-            if self.lib is None:
-                self.lib = cdll.LoadLibrary("libroctracer64.so")
-            self.lib.roctracer_stop()
-            self.roc_tracer_flag = False
-
-    def thread_depth_add(self, num):
-        current_thread = threading.current_thread()
-        thread_id = current_thread.ident
-        if thread_id not in self.push_depth.keys():
-            self.push_depth[thread_id] = 0
-        if num < 0 and self.push_depth[thread_id] == 0:
-            return False
-        self.push_depth[thread_id] += num
-        return True
-
-    def ProfRangePush(self, message):
-        if profile.use_roctx and self.roc_tracer_flag:
-            profile.lib.roctxRangePushA(message.encode('utf-8'))
-            profile.lib.roctxRangePushA(message.encode('utf-8'))
-            self.thread_depth_add(1)
-
-    def ProfRangePop(self):
-        if profile.use_roctx and self.roc_tracer_flag:
-            if not self.thread_depth_add(-1):
-                return
-            profile.lib.roctxRangePop()
-
-    def ProfRangeAutoPush(self, message):
-        self.ProfRangePop()
-        self.ProfRangePush(message)
-
-
-profile = Prof()

python/sglang/srt/server_args.py

@@ -93,7 +93,6 @@ QUANTIZATION_CHOICES = [
     "w4afp8",
     "mxfp4",
     "compressed-tensors",  # for Ktransformers
-    "slimquant_w4a8_marlin",
 ]
 
 ATTENTION_BACKEND_CHOICES = [

sgl-kernel/csrc/gemm/qserve_w4a8_per_chn_gemm.cu

@@ -25,7 +25,7 @@
 #define INTRIN_M 16
 #define INTRIN_N 16
 #define INTRIN_K 32
-#define WARP_SIZE 64
+#define WARP_SIZE 32
 #define SMEM_PAD_A 0
 #define SMEM_PAD_B 0
 #define PACK_SIZE 16

sgl-kernel/csrc/gemm/qserve_w4a8_per_group_gemm.cu

@@ -25,7 +25,7 @@
 #define INTRIN_M 16
 #define INTRIN_N 16
 #define INTRIN_K 32
-#define WARP_SIZE 64
+#define WARP_SIZE 32
 #define SMEM_PAD_A 0
 #define SMEM_PAD_B 0
 #define PACK_SIZE 16

sgl-kernel/csrc/kvcacheio/transfer.cu

@@ -5,7 +5,7 @@
 #include <cstdint>
 
 #ifndef USE_ROCM
-#define WARP_SIZE 64
+#define WARP_SIZE 32
 #include "pytorch_extension_utils.h"
 #else
 #include "pytorch_extension_utils_rocm.h"

sgl-kernel/csrc/quantization/gguf/ggml-common.h

@@ -3,7 +3,7 @@
 // copied from https://github.com/ggerganov/llama.cpp/blob/b2899/ggml-common.h
 #define QK_K 256
 #define K_QUANTS_PER_ITERATION 2
-#define WARP_SIZE_GGUF 64
+#define WARP_SIZE_GGUF 32
 #define K_SCALE_SIZE 12
 #define CUDA_DEQUANTIZE_BLOCK_SIZE 256
 #define CUDA_QUANTIZE_BLOCK_SIZE 256

sgl-kernel/include/utils.h

@@ -340,7 +340,7 @@ inline bool getEnvEnablePDL() {
 #define CEILDIV(x, y) (((x) + (y) - 1) / (y))
 
 #ifndef USE_ROCM
-#define WARP_SIZE 64
+#define WARP_SIZE 32
 #else
 #if defined(__GFX9__) || !defined(__HIP_DEVICE_COMPILE__)
 #define WARP_SIZE 64