Re: [classad-users] Dependencies and repetitions in DAGMan

[Alain Roy <roy@xxxxxxxxxxx>]

On Jun 5, 2009, at 10:33 AM, Marc Tardif wrote:
> I just read some PPT presentation which gave me the impression it  
> might
> be possible to use a PRE script in a nested DAG which would call
> condor_submit_day in order to generate nodes dynamically. For example,
> lets say I specified the following DAGs:
>
>    # Filename: A.dag
>    JOB A A.condor
>    JOB B B.dag
>    PARENT A CHILD B
>
>    # Filename: B.dag
>    Script PRE B loop-script
>    JOB B B.condor
>
> Then, my understanding is that it might be possible to build loop- 
> script in
> such a way that it could discover the available hosts and  
> automatically
> submit B.condor for each host. Is my understanding correct?
Sort of. You could do that. You can write loop-script so that it does  
anything, but you probably don't want to have it submit jobs. Instead,  
you can have it edit B.condor. That way DAGMan will monitor it.
An interesting way to edit B is to turn it into a DAGMan job. Then you  
get multiple jobs for that single node.
-alain