From 5a7ae059e37f2c481462a2ad965467264718c461 Mon Sep 17 00:00:00 2001
From: Yuhao Yang <47235274+yhyang201@users.noreply.github.com>
Date: Wed, 18 Feb 2026 23:03:07 +0800
Subject: [PATCH] Add DP ViT support for Kimi K2.5 (#18689)

---
 python/sglang/srt/models/kimi_k25.py | 24 ++++++++++++++++++++----
 1 file changed, 20 insertions(+), 4 deletions(-)

diff --git a/python/sglang/srt/models/kimi_k25.py b/python/sglang/srt/models/kimi_k25.py
index 1b7f20aca..d8399a691 100644
--- a/python/sglang/srt/models/kimi_k25.py
+++ b/python/sglang/srt/models/kimi_k25.py
@@ -35,6 +35,8 @@ from sglang.srt.model_loader.weight_utils import default_weight_loader
 from sglang.srt.models.deepseek_v2 import DeepseekV3ForCausalLM
 from sglang.srt.models.kimi_vl_moonvit import MLP2
 from sglang.srt.models.utils import WeightsMapper
+from sglang.srt.multimodal.mm_utils import run_dp_sharded_mrope_vision_model
+from sglang.srt.server_args import get_global_server_args
 from sglang.srt.utils import add_prefix
 
 KIMIV_VT_INFER_MAX_PATCH_NUM = 16328
@@ -475,9 +477,10 @@ class MoonViT3dPretrainedModel(nn.Module):
     _supports_flash_attn_2 = True
     _supports_sdpa = True
 
-    def __init__(self, config, *inputs, **kwargs):
+    def __init__(self, config, *inputs, use_data_parallel: bool = False, **kwargs):
         super().__init__()
         config = deepcopy(config)
+        self.config = config
         self.merge_kernel_size = config.merge_kernel_size
         self.patch_size = config.patch_size
         self.merge_type = config.merge_type
@@ -500,6 +503,7 @@ class MoonViT3dPretrainedModel(nn.Module):
                 "mlp_dim": config.intermediate_size,
                 "activation": PytorchGELUTanh(),
                 "attn_bias": True,
+                "use_data_parallel": use_data_parallel,
             },
             video_attn_type=config.video_attn_type,
         )
@@ -541,11 +545,9 @@ class K2VLMultiModalProjector(nn.Module):
     def __init__(
         self,
         config: KimiK25VisionConfig,
-        use_data_parallel: bool = False,
         prefix: str = "",
     ):
         super().__init__()
-        self.use_data_parallel = use_data_parallel
 
         # Hidden size after patch merging
         merge_h, merge_w = config.merge_kernel_size
@@ -663,8 +665,11 @@ class KimiK25ForConditionalGeneration(nn.Module):
         super().__init__()
         self.config = config
         self.quant_config = quant_config
+        self.use_data_parallel = get_global_server_args().mm_enable_dp_encoder
         # Create vision tower
-        self.vision_tower = MoonViT3dPretrainedModel(config.vision_config)
+        self.vision_tower = MoonViT3dPretrainedModel(
+            config.vision_config, use_data_parallel=self.use_data_parallel
+        )
         # Create mm projector
         self.mm_projector = K2VLMultiModalProjector(config.vision_config)
 
@@ -687,6 +692,17 @@ class KimiK25ForConditionalGeneration(nn.Module):
 
         target_dtype = self.vision_tower.patch_embed.proj.weight.dtype
         pixel_values = pixel_values.to(target_dtype)
+
+        if self.use_data_parallel:
+            image_embeds = run_dp_sharded_mrope_vision_model(
+                self.vision_tower,
+                pixel_values,
+                grid_thws.tolist(),
+                rope_type="rope_2d",
+            )
+            image_features = self.mm_projector(image_embeds)
+            return image_features
+
         image_features = vision_tower_forward_auto(
             self.vision_tower,
             pixel_values,