Hello,
You can use doxygen to see caller graphs e.g.
First, generate doxygen documentation of the release you use:
doc_telemac.py -M doxydocs
Then open one browser and write:
$HOMETEL/documentation/doxydocs/html/index.html (by changing HOMETEL with the location where you have installed TELEMAC).
For a tag release or the main, you have to generate it by yourself.
Anyway, for v8p2r0, you can have it here:
docs.opentelemac.org/doxydocs/v8p2r0/html/index.html
The main subroutines for TELEMAC-2D are telemac2d.F and propag.F
Hope this helps,
Chi-Tuan