diff --git a/examples_cuda/aobench/ao.cu b/examples_cuda/aobench/ao.cu
index 2ebcb011..071bec16 100644
--- a/examples_cuda/aobench/ao.cu
+++ b/examples_cuda/aobench/ao.cu
@@ -417,6 +417,11 @@ void ao_ispc_tasks(
   const int nby =  ntiley;
   const int nbz = 1;
   const dim3 blocks (nbx, nby, nbz);
-  ao_task<<<blocks, 128>>>(w,h,nsubsamples,image);
+  if (threadIdx.x == 0)
+  {
+    printf(" --- using CDP -- \n");
+    ao_task<<<blocks, 128>>>(w,h,nsubsamples,image);
+  }
+  cudaDeviceSynchronize();
 }
 #endif
diff --git a/examples_cuda/aobench/ao_cu.cpp b/examples_cuda/aobench/ao_cu.cpp
index b0aa607d..dc53a7b5 100755
--- a/examples_cuda/aobench/ao_cu.cpp
+++ b/examples_cuda/aobench/ao_cu.cpp
@@ -340,8 +340,10 @@ extern "C"
     const char *  module = &module_str[0];
 #endif
     CUmodule   cudaModule   = loadModule(module);
-    CUfunction cudaFunction = getFunction(cudaModule, func_name);
-    deviceLaunch(cudaFunction, countx, county, countz, func_args);
+//    CUfunction cudaFunction = getFunction(cudaModule, func_name);
+//    deviceLaunch(cudaFunction, countx, county, countz, func_args);
+    CUfunction cudaFunction = getFunction(cudaModule, "ao_ispc_tasks");
+    deviceLaunch(cudaFunction, 1, 1, 1, func_args);
     unloadModule(cudaModule);
   }
   void CUDASync(void *handle)