From d8e66e54e5371a9f6e66a4f1e704dea5366749c9 Mon Sep 17 00:00:00 2001
From: Yuhao Yang <47235274+yhyang201@users.noreply.github.com>
Date: Tue, 19 May 2026 11:00:07 +0800
Subject: [PATCH] fix: use triton_attn as default vision attention on B300
 (SM103) (#25570)

---
 python/sglang/srt/layers/attention/vision.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/python/sglang/srt/layers/attention/vision.py b/python/sglang/srt/layers/attention/vision.py
index 6791d0c79..2b67e5edb 100644
--- a/python/sglang/srt/layers/attention/vision.py
+++ b/python/sglang/srt/layers/attention/vision.py
@@ -951,7 +951,7 @@ class VisionAttention(nn.Module):
             major, minor = get_device_capability()
             if major == 9:
                 backend = "fa3"
-            elif major == 10:
+            elif major == 10 and minor != 3:
                 backend = "fa4"
             else:
                 backend = "triton_attn"