diff --git a/.gitmodules b/.gitmodules
new file mode 100644
index 0000000..71f06fe
--- /dev/null
+++ b/.gitmodules
@@ -0,0 +1,4 @@
+[submodule "3rdparty/Block-SparseAttention"]
+	path = 3rdparty/Block-SparseAttention
+	url = https://github.com/Zijie-Tian/Block-Sparse-Attention.git
+	branch = tzj/minference
diff --git a/3rdparty/Block-SparseAttention b/3rdparty/Block-SparseAttention
new file mode 160000
index 0000000..6ec5a27
--- /dev/null
+++ b/3rdparty/Block-SparseAttention
@@ -0,0 +1 @@
+Subproject commit 6ec5a27a0cd6bd92ea6296698d64e460c73da27e