[Users] Automatic termination trigger mid-run

[Erik Schnetter]

You can call the function `CCTK_TerminateNext`, which will stop the simulation gracefully after the current iteration finishes. This is built-in, you do not need a special thorn for this.

This is how TerminationTrigger is implemented: It calls this function when a certain file is created.

-erik

> On Jun 4, 2026, at 09:31, Jordan Nicoules via Users <users at einsteintoolkit.org> wrote:
> 
> Dear all,
> 
> I was wondering if there was a built-in way to trigger the termination of a simulation when something specific happens, along the lines of what Trigger does to steer quantities. From what I understand, Trigger does not offer that possibility, and TerminationTrigger checks either a file or a time limit. What I'm considering would be more along the lines of "an apparent horizon is found so trigger termination", in order to steer some parameters at recovery.
> 
> If there's no such explicit way, I'm happy to try to implement that in Trigger. I actually have ideas of other small improvements to Trigger that I could try contributing as well (namely, increase the maximum number of triggers and allow one trigger to have multiple consequences at once).
> 
> Unfortunately I won't be able to join the weekly call today to discuss this directly.
> 
> Best,
> 
> Jordan
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