Re: [HTCondor-users] dagman api

[Todd Tannenbaum <tannenba@xxxxxxxxxxx>]

On 10/25/2013 7:27 AM, Keith Brown wrote:
> Thanks.
>
> I suppose my intention was to build a Python API for it but it seems if I
> call subprocess in python to condor_dag_man, I think that should be
> sufficient.

I think you likely want your python code to call condor_submit_dag (to 
submit a workflow), not invoke condor_dagman directly yourself.

What condor_submit_dag does is create a regular condor_submit submit 
file that tells HTCondor to run condor_dagman as a scheduler universe 
job, passing your dag specification file as input to condor_dagman.  If 
you really don't like the idea of Python spawning condor_submit_dag, you 
could use the HTCondor Python APIs to submit dagman as a scheduler 
universe job the same way that condor_submit_dag does.

Todd


> On Thu, Oct 24, 2013 at 4:35 PM, R. Kent Wenger <wenger@xxxxxxxxxxx> wrote:
>
> > On Thu, 24 Oct 2013, Todd Tannenbaum wrote:
> >
> >   and the parse logic for a DAGMan submit file looks to be at
> > > https://github.com/htcondor/**htcondor/blob/master/src/**
> > > condor_dagman/parse.cpp<https://github.com/htcondor/htcondor/blob/master/src/condor_dagman/parse.cpp>
> >
> > Yes, that's the code that parses the DAG files.
> >
> > You may also want to take a look at AddNode() in dagman_commands.cpp.
> >
> >
> > Kent Wenger
> > CHTC Team
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--
Todd Tannenbaum <tannenba@xxxxxxxxxxx> University of Wisconsin-Madison
Center for High Throughput Computing   Department of Computer Sciences
HTCondor Technical Lead                1210 W. Dayton St. Rm #4257
Phone: (608) 263-7132                  Madison, WI 53706-1685