PETSc developers,

Is there a reason why the PETSc Gmsh reader does not just set the PETSc label 
name to the name of the physical group and set the PETSc label value to 1? 

>From a user perspective, it would be nice to only have to specify one 
>identifier for a physical group (preferably a name) rather than always specify 
>two identifiers (name and value). This is what we do for our PyLith Exodus 
>reader (nodeset names are mapped to label names and the label value is set to 
>1).

PETSc maps the Gmsh physical group name and tag into a label name and label 
value. This seems redundant because from what I can tell, physical groups in 
Gmsh at a given dimension need both a unique name and a unique tag. That is, no 
two physical groups at a given dimension can have the same name and different 
tags nor can they have different names and the same tag.


Thanks,
Brad

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