[Users] Range error setting parameter, on cluster

Roland Haas rhaas at mail.ubc.ca
Thu Feb 12 09:15:10 CST 2026


Hello Jordan,

> In the param.ccl of the Coordinate thorn, the range of this parameter
> appears as
> 
>   * :: "negative turns off stretching"
> Changing the * range statement to *:* makes it work on the cluster.
> 
> Is this some known issue? Is there something specific to look for, in
> the Cactus configuration for instance? So far, I haven't thoroughly
> tested ET versions, different clusters etc, but I can try to provide
> more information if needed.

Hmm, the docs

https://einsteintoolkit.org/usersguide/UsersGuide.html#x1-70000

are not explicit about this. 

I have certainly used it like this:

--8<--
Coordinates::radial_stretch = "yes"
Coordinates::stretch_rmin_1 = $outermost_detector + 2.*$initial_orbital_period
Coordinates::stretch_rmax_1 = $outermost_detector + 4.*$initial_orbital_period
Coordinates::h_radial_1     = 4 * $hr
--8<--

in files of my own (with $hr having been set before).

Can you attach the full parameter file maybe? 

Yours,
Roland

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