diff --git a/include/rxmesh/matrix/nd_permute.cuh b/include/rxmesh/matrix/nd_permute.cuh
index ef882b2..46604fc 100644
--- a/include/rxmesh/matrix/nd_permute.cuh
+++ b/include/rxmesh/matrix/nd_permute.cuh
@@ -724,8 +724,21 @@ void permute_separators(RXMeshStatic&              rx,
                         int*                       d_patch_proj_l,
                         int*                       d_patch_proj_l1)
 {
+
+
+    CPUTimer timer;
+    GPUTimer gtimer;
+
     single_patch_nd_permute(rx, v_local_permute);
 
+
+    timer.stop();
+    gtimer.stop();
+
+    RXMESH_INFO("single_patch_nd_permute took {} (ms), {} (ms)",
+                timer.elapsed_millis(),
+                gtimer.elapsed_millis());
+
     v_index.reset(-1, DEVICE);
 
     constexpr uint32_t blockThreads = 256;