====== Checker ======

Checker is one of Auryn's abstract base classes. Any descendant of it is a "checker". That mean it is an object that performs minimalistic online run-monitoring of your simulation and stops the simulation if something goes wrong. Checkers are called last during the Auryn [[duty cycle]], after the [[Monitor]] objects, and can terminate a run in any time step if the ''run'' function of the [[System]] class is called with the option ''checking==true'' (that's the default). When a checker triggers, it might still take [[MINDELAY]] time until all other ranks are notified of this run termination, in case a Checker only triggers locally on one rank, which can happen.

The most standard Checker which should be included at least once in every Auryn simulation is the [[RateChecker]].