Comment (by Roland Haas):

the way to do it is to put a clever relative path in there that will work when Cactus runs the testsuite. Eg see repos/carpet/CarpetIOHDF5/test/input_initial_data.par which contains:

IO::filereader_ID_dir   = "../../../arrangements/Carpet/CarpetIOHDF5/test/input_initial_data"

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which will not work if eg you cd into the test directory and run the parfile manually using cactus_sim foo.par (since the relative locations are different).

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Ticket URL: https://bitbucket.org/einsteintoolkit/tickets/issues/2747/inclusion-of-sgrid-importer-in-einstein