#1343: Cactus ParameterGetXXX functions return values for non-active thorns ----------------------+----------------------------------------------------- Reporter: rhaas | Owner: Type: defect | Status: new Priority: optional | Milestone: Component: Cactus | Version: Keywords: | ----------------------+----------------------------------------------------- using eg. CCTK_ParameterValString it is possible to access parameters of non-active thorns, eg. the line in CarpetIOHDF5/src/Input.cc lines 280ff {{{ char *buffer = CCTK_ParameterValString ("refinement_levels", "CarpetRegrid"); assert (buffer); CCTK_VInfo (CCTK_THORNSTRING, "Using %i reflevels from checkpoint file. " "Ignoring value '%s' in parameter file.", num_reflevels, buffer); free (buffer); }

char buffer[32]; snprintf (buffer, sizeof (buffer), "%d", num_reflevels); int const retval = CCTK_ParameterSet ("refinement_levels", "CarpetRegrid", buffer); }}} will actually get a value (the default value it seems) and is able to steer a value of a non-active thorns.

Reading the Cactus docs this behaviour is not forbidden however I personally find it a bit confusing.