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Since the type is vital to the Worker correctly identifying an execution module, it is a mandatory job component. The qbsub command will automatically set the type for you. If you are developing your own job types, it will become more important to explicitly set the job's type before submitting it.
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Job Parameters
Job parameters act as instructions to the Qube! Supervisor to help it determine how best to dispatch the job to the Workers. Each job can have any of several job parameters.
The commandline "qbsub" From the command line, qbsub will automatically create default parameters for your job submissions, in case you don't want or need to specify them. In the case of the CPUs parameter, the qbsub will submit a job with a default of 1.
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Instances
In reality, a job is a large data structure that contains all the information the Supervisor needs to monitor, control, and dispatch a task for a remote host. The actual execution of that task is performed by the Worker by what we call an instance instance (previously, these were called subjobs).
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