diff --git a/example/ck_tile/18_hstu_attention/block_gemm_areg_bsmem_creg_v2_hack_0.hpp b/example/ck_tile/18_hstu_attention/block_gemm_areg_bsmem_creg_v2_hack_0.hpp
index 7a8df380a3..d33c1d2dc2 100644
--- a/example/ck_tile/18_hstu_attention/block_gemm_areg_bsmem_creg_v2_hack_0.hpp
+++ b/example/ck_tile/18_hstu_attention/block_gemm_areg_bsmem_creg_v2_hack_0.hpp
@@ -139,11 +139,15 @@ struct BlockGemmARegBSmemCRegV2Hack_0
                              {nIter * NPerBlockPerIter, 0 * KPerBlockPerIter});
             b_warp_tensors[I0] = load_tile(b_warp_windows(nIter)(I0));
 
+            __builtin_amdgcn_sched_barrier(0);
+
             b_warp_windows(nIter)(I1) = b_warp_window_tmp;
             move_tile_window(b_warp_windows(nIter)(I1),
                              {nIter * NPerBlockPerIter, 1 * KPerBlockPerIter});
             b_warp_tensors[I1] = load_tile(b_warp_windows(nIter)(I1));
 
+            __builtin_amdgcn_sched_barrier(0);
+
             static_for<0, MIterPerWarp, 1>{}([&](auto mIter) {
                 // read A warp tensor from A block tensor
                 AWarpTensor a_warp_tensor;
@@ -174,6 +178,8 @@ struct BlockGemmARegBSmemCRegV2Hack_0
                         load_tile(b_warp_windows(nIter)(number<kIter + 1>{}));
                 };
 
+                __builtin_amdgcn_sched_barrier(0);
+
                 static_for<0, MIterPerWarp, 1>{}([&](auto mIter) {
                     // read A warp tensor from A block tensor
                     AWarpTensor a_warp_tensor;