Limits provide simple load management by limiting the number of tasks submitted by a specific ecflow_server. This provides very simple load management.
Ensure that only 2 task can run in parallel
suite test
limit l1 2
family f5
inlimit l1
task t1
task t2
task t3
task t4
task t5
task t6
task t7
task t8
task t9
endfamily
endsuite
In the 5 series this has been extended to Family's.
When a family is limited, the child tasks are unconstrained. In this case only two family can run at a time. All the tasks in the family can start at once
Ensure that only 2 Family can run in parallel
suite test
limit fam 2
family f1
inlimit -n fam
task t1
task t2
endfamily
family f2
inlimit -n fam
task t1
task t2
endfamily
family f3
inlimit -n fam
task t1
task t2
endfamily
endsuite
In this case, we want family limits, but also want to constrain the tasks, such that one task in the active family can run.
Limit Family and Task. Here one Family can run, and one task
suite test
limit fam 2
limit T
inlimit T
family f1
inlimit -n fam
task t1
task t2
endfamily
family f2
inlimit -n fam
task t1
task t2
endfamily
family f3
inlimit -n fam
task t1
task t2
endfamily
endsuite