TerminationTrigger

January 11, 2010

Abstract

This thorn watches the elapsed walltime. If only $n$ minutes are left before the some limit set by the user, it triggers termination of the simulation. Termination is also triggered if a special ﬁle with a special content exists.

1 Using This Thorn

To use this thorn you only need to include it in your ActiveThorns parameter and set the relevent parameters. With default parameters the thorn does nothing.

Current options are to gracefully terminate a simulation $n$ minutes before a set time limit, or to terminate a simulation when the user creates a certain ﬁle. The latter is one of a few possibilities to order a Cactus simulation to terminate from the outside while giving it time to checkpoint. (Another possibility is to use the web interface for this.)