Fix element size

examples/filters/fmultiple_manual.c

@@ -130,7 +130,7 @@ int main(int argc, char **argv)
 	STARPU_CHECK_RETURN_VALUE(ret, "starpu_init");
 
 	/* Declare the whole matrix to StarPU */
-	starpu_matrix_data_register(&handle, STARPU_MAIN_RAM, (uintptr_t)matrix, NX, NX, NY, sizeof(matrix[0]));
+	starpu_matrix_data_register(&handle, STARPU_MAIN_RAM, (uintptr_t)matrix, NX, NX, NY, sizeof(matrix[0][0]));
 
 	/* Also declare the vertical slices to StarPU */
 	for (i = 0; i < PARTS; i++)