diff --git a/codes/gesummv/data.bin b/codes/gesummv/data.bin
new file mode 100644
index 0000000000000000000000000000000000000000..7b4f23d406d69a2312caccf08ecc0408e7aefdd7
Binary files /dev/null and b/codes/gesummv/data.bin differ
diff --git a/codes/gesummv/data.o b/codes/gesummv/data.o
new file mode 100644
index 0000000000000000000000000000000000000000..c0ee4743d8c6414f9c9b97700288803f021c2710
Binary files /dev/null and b/codes/gesummv/data.o differ
diff --git a/codes/gesummv/gesummv.c b/codes/gesummv/gesummv.c
index c5e2cd6d2353f64f7f089302d4e1a5710840a457..fe523fed082fa48b6c9a4b6887adcdad619fb539 100644
--- a/codes/gesummv/gesummv.c
+++ b/codes/gesummv/gesummv.c
@@ -64,6 +64,25 @@ void print_array(int n,
   POLYBENCH_DUMP_FINISH;
 }
 
+extern double _binary_data_bin_start;
+extern double _binary_data_bin_end;
+
+static
+void calc_error(int n,
+		 DATA_TYPE POLYBENCH_1D(y,N,n))
+{
+    int i;
+    double err = 0;
+    double *accurate = &_binary_data_bin_start;
+    double *test = &(y[0]);
+
+    /* calculate the mean squared error */
+    for (i = 0; i < n; i++) {
+        err += (accurate[i] - test[i])*(accurate[i] - test[i]);
+    }
+    err /= n;
+    printf("error: %f\n", err);
+}
 
 /* Main computational kernel. The whole function will be timed,
    including the call and return. */
@@ -136,6 +155,8 @@ int main(int argc, char** argv)
      by the function call in argument. */
   polybench_prevent_dce(print_array(n, POLYBENCH_ARRAY(y)));
 
+  calc_error(n, POLYBENCH_ARRAY(y));
+
   /* Be clean. */
   POLYBENCH_FREE_ARRAY(A);
   POLYBENCH_FREE_ARRAY(B);