Some fixups

sample/simple3DFilter.cpp

@@ -146,7 +146,7 @@ int main(int argc, char **argv)
       if (rx < 0 || rx >= Nres || ry < 0 || ry >= Nres || rz < 0 || rz >= Nres)
         continue;
 	  
-#pragma omp atomic update
+//#pragma omp atomic update
       bins[rx][ry][rz]++;
     }
   v1_data.resize(boost::extents[1][1]);