Condor - Job Queue System

General information

Look at the Condor User's Manual for an introduction to how to work with Condor. You can also check out the FAQs.

An online overview of the current workload and the workload history can be found at:

http://manila.physik.uni-freiburg.de/condor

This website requires Java. Since Chrome does not support Java, you need to use a different browser.

Requirements, Rank, ClassAds

The Condor system distributes jobs among the group's computers. It is possible to influence the queue system by means of two options.

Requirements

Rank

The administrator sets these options in the system configuration, and the user can set them in his submit scripts.

These options are explained here and here

In addition, ClassAds („classified ads“) play an important role. Machines use ClassAds to advertise what kind of resources they offer. A job uses ClassAds to specify what resources it requires to run. The Condor documentation includes a detailed description of ClassAds.

Die documentation contains an example of how to use Requirements and Rank. Some of the useful ClassAds include:

Machine

Memory

Mips

Kflops

NOTE: Condor is capable of keeping track of the load on a computer due to non-Condor jobs and due to interactive work on the computer.

Important Condor commands

condor_status

Use this command to inspect ClassAds and check the status of the queues.