diff --git a/pkgs/by-name/op/opencl-cts/package.nix b/pkgs/by-name/op/opencl-cts/package.nix
index e49e10599024..f60f6f2f683e 100644
--- a/pkgs/by-name/op/opencl-cts/package.nix
+++ b/pkgs/by-name/op/opencl-cts/package.nix
@@ -48,6 +48,11 @@ stdenv.mkDerivation (finalAttrs: {
     (lib.cmakeFeature "OPENCL_LIBRARIES" "OpenCL")
   ];
 
+  # Upstream installs to bin/$<CONFIG> (e.g. bin/Release/); flatten it.
+  postInstall = ''
+    mv "$out/bin/''${cmakeBuildType:-Release}"/* "$out"/bin/
+  '';
+
   meta = {
     description = "OpenCL Conformance Test Suite";
     homepage = "https://github.com/KhronosGroup/OpenCL-CTS";
diff --git a/pkgs/development/rocm-modules/clr/default.nix b/pkgs/development/rocm-modules/clr/default.nix
index 8b76a12d9351..8592f361199b 100644
--- a/pkgs/development/rocm-modules/clr/default.nix
+++ b/pkgs/development/rocm-modules/clr/default.nix
@@ -263,11 +263,15 @@ stdenv.mkDerivation (finalAttrs: {
     };
 
     impureTests = {
+      # bash $(nix-build -A rocmPackages.clr.impureTests.rocm-smi)
       rocm-smi = callPackage ./test-rocm-smi.nix {
         inherit rocm-smi;
         clr = finalAttrs.finalPackage;
       };
-      # TODO(@LunNova): add OpenCL test with opencl-cts
+      # Simple subset of opencl-cts test_basic
+      opencl-cts = callPackage ./test-opencl-cts.nix {
+        clr = finalAttrs.finalPackage;
+      };
       generic-arch = callPackage ./test-isa-compat.nix {
         clr = finalAttrs.finalPackage;
         name = "generic-arch";
diff --git a/pkgs/development/rocm-modules/clr/test-opencl-cts.nix b/pkgs/development/rocm-modules/clr/test-opencl-cts.nix
new file mode 100644
index 000000000000..77929531f900
--- /dev/null
+++ b/pkgs/development/rocm-modules/clr/test-opencl-cts.nix
@@ -0,0 +1,28 @@
+{
+  lib,
+  makeImpureTest,
+  opencl-cts,
+  clr,
+}:
+
+makeImpureTest {
+  name = "opencl-cts";
+  testedPackage = "rocmPackages.clr";
+
+  sandboxPaths = [
+    "/sys"
+    "/dev/dri"
+    "/dev/kfd"
+  ];
+
+  nativeBuildInputs = [ opencl-cts ];
+  OCL_ICD_VENDORS = "${clr.icd}/etc/OpenCL/vendors";
+
+  testScript = ''
+    test_basic arraycopy arrayreadwrite astype barrier vector_swizzle work_item_functions
+  '';
+
+  meta = {
+    teams = [ lib.teams.rocm ];
+  };
+}