[HTCondor-users] proposed change to DAG NOOP nodes

["R. Kent Wenger" <wenger@xxxxxxxxxxx>]

Currently, nodes that are specified as NOOPs in a DAG file are not 
actually submitted to HTCondor -- DAGMan itself "marks" the nodes as 
successful immediately.  We want to move away from this, and actually 
submit such jobs to HTCondor (but still have them be NOOPs).

Our current idea is as follows:

* DAGMan itself would create a suitable submit file (so that the current 
behavior of not requiring a valid submit file will continue).

* This file would be submitted with the condor_submit argument
  -append "noop_job = true"
which would make it an HTCondor-level NOOP.

* We would add a configuration knob that would select between the old and 
the new behaviors, with the new behavior being the default.

For most users, there should be very little difference between the old and 
new versions -- the only time this should matter is if, for some 
reason, it is important to not actually submit the jobs to HTCondor at 
all.

Anyhow, please let us know if you see problems with this proposed 
change...

Kent Wenger
CHTC Team