Tethys Platform
Table Of Contents
Table Of Contents

Condor Job Type

Last Updated: January 2022

The Condor Job Type (and Condor Workflow Job Type) are used to create jobs to be run by a pool of cluster resources managed by HTCondor. HTCondor makes it possible for jobs to be offloaded from the main web server to a scalable computing cluster, which in turn enables very large scale jobs to be processed.

See also

The Condor Job and the Condor Workflow job types use the CondorPy library to submit jobs to HTCondor compute pools. For more information on CondorPy and HTCondor see the CondorPy documentation and specifically the Overview of HTCondor.

Creating a Condor Job

To create a job call the create_job method on the job manager. The required parameters are name, user and job_type. Any other job attributes can also be passed in as kwargs.

from tethysapp.my_first_app.app import MyFirstApp as app
from tethys_sdk.workspaces import app_workspace


@app_workspace
def some_controller(request, app_workspace):
    # create a new job from the job manager
    job = job_manager.create_job(
        name='myjob_{id}',  # required
        user=request.user,  # required
        job_type='CONDOR',  # required

        # any other properties can be passed in as kwargs
        attributes=dict(
            transfer_input_files=('../input_1', '../input_2'),
            transfer_output_files=('example_output1', example_output2),
        ),
        condorpy_template_name='vanilla_transfer_files',
        remote_input_files=(
            os.path.join(app_workspace, 'my_script.py'),
            os.path.join(app_workspace, 'input_1'),
            os.path.join(app_workspace, 'input_2')
        )
    )

    # properties can also be added after the job is created
    job.extended_properties = {'one': 1, 'two': 2}

    # each job type may provided methods to further specify the job
    job.set_attribute('executable', 'my_script.py')

    # get a scheduler for the job
    job.scheduler = app.get_scheduler('condor_primary')

    # save or execute the job
    job.save()
    # or
    job.execute()

Before a controller returns a response the job must be saved, otherwise, all of the changes made to the job will be lost (executing the job automatically saves it). If submitting the job takes a long time (e.g. if a large amount of data has to be uploaded to a remote scheduler) then it may be best to use AJAX to call the controller that executes the job.

API Documentation

class tethys_compute.models.CondorJob(*args, **kwargs)

CondorPy Job job type