Name the gridfunction space

python/dune/perftool/pdelab/driver.py

@@ -755,11 +755,20 @@ def print_matrix():
             "Dune::printmatrix(std::cout, native(m),\"global stiffness matrix\",\"row\",9,1);"]
 
 
+@preamble
+def define_gfs_name(element):
+    gfs = name_gfs(element)
+    #TODO make something sensible here
+    return "{}.name(\"bla\");".format(gfs)
+
+
 @preamble
 def vtkoutput():
+    element = _form.coefficients()[0].element()
+    define_gfs_name(element)
     include_file("dune/pdelab/gridfunctionspace/vtk.hh", filetag="driver")
     vtkwriter = name_vtkwriter()
-    gfs = name_gfs(_form.coefficients()[0].element())
+    gfs = name_gfs(element)
     vec = name_vector()
     vtkfile = name_vtkfile()
     dune_solve()