A computing element class using singularity containers.

This computing element will start the job in the container set by the “ContainerRoot” config option.

DIRAC will the re-installed within the container, extra flags can be given to the dirac-install command with the “ContainerExtraOpts” option.

See the Configuration/Resources/Computing documention for details on where to set the option parameters.

class DIRAC.Resources.Computing.SingularityComputingElement.SingularityComputingElement(ceUniqueID)

Bases: DIRAC.Resources.Computing.ComputingElement.ComputingElement

A Computing Element for running a job within a Singularity container.


Standard constructor.


This method returns the number of available slots in the target CE. The CE instance polls for waiting and running jobs and compares to the limits in the CE parameters.

Parameters:jobIDList (list) – list of already existing job IDs to be checked against

Method to return information on running and pending jobs.


Get CE description as a dictionary.

This is called by the JobAgent for the case of “inner” CEs.


Get the CE complete parameter dictionary


Initialize the CE parameters after they are collected from various sources


Check if the stored proxy is valid


Check the sanity of the Computing Element definition


Instantiate object representing the backend batch system

sendOutput(stdid, line)

Callback function such that the results from the CE may be returned.


Update the CPUTime parameter of the CE classAd, necessary for running in filling mode


Add parameters from the given dictionary overriding the previous values

Parameters:ceOptions (dict) – CE parameters dictionary to update already defined ones
setProxy(proxy, valid=0)

Set proxy for this instance

submitJob(executableFile, proxy, jobDesc, log, logLevel, **kwargs)

Start a container for a job. executableFile is ignored. A new wrapper suitable for running in a container is created from jobDesc.


CE helper function to write a CE proxy string to a file.