Comment (by Roland Haas):

That way you could run on a current cluster once with the old code and original parfile and once with the new code and Peter’s best guess for a correct parfile and see if (a) the run on the new cluster and old code agrees with the old result (b) the two new runs agree with each other.

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Ticket URL: https://bitbucket.org/einsteintoolkit/tickets/issues/2119/the-binary-neutron-star-gallery-example