The previous examples all effect how tasks are constrained.
However, we may also need to constrain how many suites/families are allowed to run in parallel.
In the exercise below we will limit families.
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
Text
Let us modify our suite definition file:
# Definition of the suite test.
suite test
edit ECF_INCLUDE "$HOME/course"
edit ECF_HOME "$HOME/course"
limit fam 2
family lf1
inlimit -n fam
task t1
task t2
endfamily
family lf2
inlimit -n fam
task t1
task t2
endfamily
family lf3
inlimit -n fam
task t1
task t2
endfamily
endsuite
Python
$HOME/course/test.py
import os
from ecflow import Defs,Suite,Family,Task,Edit,Trigger,Complete,Event,Meter,Time,Day,Date,Label, \
RepeatString,RepeatInteger,RepeatDate,InLimit,Limit
def create_family(name) :
return Family(name,
# limit_name(fam),limit_path(""),no_of_tokens_to_consume(1),limit node(False), limit submission(True)
InLimit("fam","",1,True,False),
Edit(SLEEP=20),
[ Task('t{}'.format(i)) for i in range(1,2) ] )
print("Creating suite definition")
home = os.path.join(os.getenv("HOME"),"course")
defs = Defs(
Suite("test",
Edit(ECF_INCLUDE=home,ECF_HOME=home),
Limit("fan",2),
create_family("lf1"),create_family("lf2"),create_family("lf3") ))
print(defs)
print("Checking job creation: .ecf -> .job0")
print(defs.check_job_creation())
print("Checking trigger expressions and inlimits")
assert len(defs.check()) == 0,defs.check()
print("Saving definition to file 'test.def'")
defs.save_as_defs("test.def")
What to do
- Edit the changes
- Replace the suite definition
- In ecflow_ui , observe the effects
- Change the value of the limit and inlimit, observe the effect.