diff --git a/.gitmodules b/.gitmodules
new file mode 100644
index 0000000..a6b161d
--- /dev/null
+++ b/.gitmodules
@@ -0,0 +1,4 @@
+[submodule "3rdparty/Block-Sparse-Attention"]
+	path = 3rdparty/Block-Sparse-Attention
+	url = git@github.com:Zijie-Tian/Block-Sparse-Attention.git
+	branch = tzj/minference
diff --git a/3rdparty/Block-Sparse-Attention b/3rdparty/Block-Sparse-Attention
new file mode 160000
index 0000000..6ec5a27
--- /dev/null
+++ b/3rdparty/Block-Sparse-Attention
@@ -0,0 +1 @@
+Subproject commit 6ec5a27a0cd6bd92ea6296698d64e460c73da27e