Adjusted bandwidth calculation

tests/test_curls.cpp

@@ -148,9 +148,7 @@ int test_curls_convergence(int geometric_order, int approximation_order)
                 std::cout << flops/(1e9*time) << " GFlops/s" << std::endl;
 
 
-                double gbytes = (3*field_size    // output curls
-                    +9*field_size*ed.num_bf    // input curls and accumulators
-                    +ed.num_orientations*ed.num_bf*ed.num_bf*ed.num_bf   // differentiation matrix
+                double gbytes = (6*field_size    // input curls and accumulators
                     +num_cells*3*3)*8/1e9;
                 std::cout << "Kernel bandwidth: " << gbytes/time << " GB/s" << std::endl;
             }