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Rachael Creager
My Condor Tools
12 Sept 2017
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Caveat emptor -- to use these tools, you'll 
need some basic familiarity with string
parsing in bash.

This is a set of tools for working with condor
batch processing.

To submit a job to condor, you need to create a submission script in a specific format and call:
condor_submit submit.sh

Here’s an example of a submit script: 
clean/submit_RAC.sh
To explain what each of those things mean:
- Universe: determines some meta-variables for how jobs are run. I’ve never used anything besides vanilla but others do exist
- Executable: you *can* point to an actual executable here, but pointing to a script is much more flexible, as I’ll describe below
- Log: where your std log goes 
- Output: where your std out goes
- Error: where your std error goes
- Queue: this tells condor to add your job to the queue

You’ll notice that my submit script points to a run_wrapper.sh:
clean/run_wrapper.sh
I use the run_wrapper so that I can run a bunch of commands in one condor job. This is necessary
if you want to use setupATLAS, root, etc. You can also copy files to your scratch disk, compile, etc.
In my script, “AAA” will be replaced with the actual command I want to run.

Of course, looking at the files I’ve indicated, you can see that not everything is filled in: I’ve left spots 
marked with AAA, BBB, etc, to be filled in with sed. 
I usually process condor jobs by making “clean copies” of my submit.sh and run_wrapper.sh files,
then for each task, I make uniquely named copies in storage location, then sed as necessary. 
In the end, you’ll have two scripts for each job, but it’s very easy to re-run a randomly failed job or look at your
scripts to try to determine why a task failed.

Depending on how powerful you want your tools to be, you can automate a ton of stuff this way. 
My driver script (condor_submit.sh) 
reads all my input files from a txt file, makes the run_wrapper.sh and submit.sh for each job,
submits them, and makes a verify.sh script to run afterward all the jobs are done (which checks
if the output exists and has non-zero size). 

This is where the string parsing comes in -- there are a few strings that are made by parsing
your input file path and name., so it's very dependent on the path to your input and the 
formatting of your filenames. These strings are:
mc_num
temp
file_num