Schedule Options

The options define various characteristics of the schedule item.

BEFORE or AFTER

These specify a function or group before or after which this item will be scheduled.

WHILE

This specifies a CCTK_INT grid scalar which is used to control the execution of this item. If the grid scalar has a nonzero value the schedule item will be executed, otherwise the item will be ignored. This allows some dynamic behaviour with scheduling.

AS

This assigns a new name to a function for scheduling purposes. This is used, for instance, to allow a thorn to schedule something before or after a routine from another implementation; two thorns providing this implementation can schedule a routine AS the same thing, thus allowing other thorns to operate independently of which one is active.