Hi all
When you enter Min days between activities
there is btton for Modify multiple constraints at once
My questions:
-If I define 2 day as minimum (90%), How FET behave when constraint should be broken? Does i try first a 1 day minimum or does it fall back directly to placing them in same day consecutively?
-In case it does fall back directly to placing them in same day consecutively, is there any way to use Modify multiple constraints at once to ADD (instead of replace) a 1 day Min (say 100%) to all activities having 2 days Min (90%)?
Thanks
You need to have a 2 days constraint and a 1 day one.
You should have added the constraints when adding the activities, FET asks this if min days is 2.
There is no such facility after adding the activities, but please see the menu "Spread activities evenly over the week". It may help if the activities have 2 components.
Thanks for advice
I also noticed usually it is useful to rum multiple instances of FET to solve a given timetable
An example from this morning
-First instance:
1059 out of 1078 activities placed
Elapsed time: 5 h 4 m 20 s
Max placed activities: 1075 (at 47 m 28 s)
still running....
-Second instance:
1068 out of 1078 activities placed
Elapsed time: 5 h 3 m 50 s
Max placed activities: 1077 (at 1 h 32 m 25 s)
still running....
-Finally, I run a third instance that solved it at 1 h 23 m 11 s !!
For example, CONCORDIA (from Namibia) and difficult-FS (from Romania), may solve in 1 minute or 5 hours.