              |     |     
     */              
 
-#if 0
+#if CUDA_COMPUTE==3
     for(int thread_index = threadIdx.x; thread_index < num_ifaces; thread_index += blockDim.x)
     { 
         int ix = thread_index % ifaces_x;

    
    */              

#if 0
    for(int thread_index = threadIdx.x; thread_index < num_ifaces; thread_index += blockDim.x)
    { 
        int ix = thread_index % ifaces_x;

    
    */              

#if CUDA_COMPUTE==3
    for(int thread_index = threadIdx.x; thread_index < num_ifaces; thread_index += blockDim.x)
    { 
        int ix = thread_index % ifaces_x;
