diff --git a/.gitmodules b/.gitmodules
index 788b3aaa23a44b77657df38e97d74366c737dc6d..406e26d595e1e5490866f92cfcb40ebe27cc9c55 100644
--- a/.gitmodules
+++ b/.gitmodules
@@ -37,3 +37,6 @@
 [submodule "third_party/llvm-project"]
 	path = third_party/llvm-project
 	url = https://github.com/llvm/llvm-project.git
+[submodule "third_party/cutlass"]
+	path = third_party/cutlass
+	url = https://github.com/MegEngine/cutlass.git
diff --git a/third_party/cutlass b/third_party/cutlass
new file mode 160000
index 0000000000000000000000000000000000000000..f6272f0d74df54af1358fd399f9bc6d3d5f3fb4e
--- /dev/null
+++ b/third_party/cutlass
@@ -0,0 +1 @@
+Subproject commit f6272f0d74df54af1358fd399f9bc6d3d5f3fb4e
diff --git a/third_party/prepare.sh b/third_party/prepare.sh
index 4301b4863557b64d06e3933ac4b80807bfd589da..f4676aeea8a6dd09738d00d6f7f752b593aac4be 100755
--- a/third_party/prepare.sh
+++ b/third_party/prepare.sh
@@ -21,6 +21,7 @@ git submodule update --init Halide
 git submodule update --init protobuf
 git submodule update --init flatbuffers
 git submodule update --init gtest
+git submodule update --init cutlass
 
 git submodule update --init cpuinfo
 source ./apply-patches.sh