diff --git a/.gitmodules b/.gitmodules
new file mode 100644
index 0000000000000000000000000000000000000000..94f6389f1ddc9c34e2d30f55c18f9dbeff1b2594
--- /dev/null
+++ b/.gitmodules
@@ -0,0 +1,12 @@
+[submodule "third_party/googletest"]
+	path = third_party/gtest
+	url = https://github.com/google/googletest.git
+[submodule "third_party/gdrcopy"]
+	path = third_party/gdrcopy
+	url = https://github.com/NVIDIA/gdrcopy.git
+[submodule "third_party/nccl"]
+	path = third_party/nccl
+	url = https://github.com/NVIDIA/nccl.git
+[submodule "third_party/ucx"]
+	path = third_party/ucx
+	url = https://github.com/openucx/ucx.git
diff --git a/third_party/gdrcopy b/third_party/gdrcopy
new file mode 160000
index 0000000000000000000000000000000000000000..2718e18915a2f7cb45d9ceedb586aa0cc1528d3c
--- /dev/null
+++ b/third_party/gdrcopy
@@ -0,0 +1 @@
+Subproject commit 2718e18915a2f7cb45d9ceedb586aa0cc1528d3c
diff --git a/third_party/gtest b/third_party/gtest
new file mode 160000
index 0000000000000000000000000000000000000000..703bd9caab50b139428cea1aaff9974ebee5742e
--- /dev/null
+++ b/third_party/gtest
@@ -0,0 +1 @@
+Subproject commit 703bd9caab50b139428cea1aaff9974ebee5742e
diff --git a/third_party/nccl b/third_party/nccl
new file mode 160000
index 0000000000000000000000000000000000000000..9db4b1d801624a00591b7aafd426d6dd23547443
--- /dev/null
+++ b/third_party/nccl
@@ -0,0 +1 @@
+Subproject commit 9db4b1d801624a00591b7aafd426d6dd23547443
diff --git a/third_party/ucx b/third_party/ucx
new file mode 160000
index 0000000000000000000000000000000000000000..a02bec2784aaa6afcf32cf36dedd24f3f995e8ac
--- /dev/null
+++ b/third_party/ucx
@@ -0,0 +1 @@
+Subproject commit a02bec2784aaa6afcf32cf36dedd24f3f995e8ac