Condor - A Project and a SystemCondor-G
What is Condor-G?
Extensions to Condor to allow access to the Grid through Globus
Two Parts
Globus Universe
Globus
Condor-G
www.cs.wisc.edu/condor
Local Condor Pool
Friendly Condor Pools (via Flocking)
Through Globus, many more machines become available to run your jobs
www.cs.wisc.edu/condor
Globus is primarily an infrastructure upon which to develop distributed applications
Command-line tools are limited
Some users don’t want to rewrite their applications to use Globus
Condor-G provides them a powerful interface to the Grid to run their existing applications
www.cs.wisc.edu/condor
Full-featured queuing service
E-mail notification of events
Remote Crash
www.cs.wisc.edu/condor
Proxy may expire before jobs finish executing
Condor can put jobs on hold and e-mail user to refresh proxy
www.cs.wisc.edu/condor
No job checkpoint or migration
No remote system calls
Solution: GlideIn
Use the Globus Universe to run the Condor daemons on Globus resources
When the resources run these GlideIn jobs, they will join your Condor Pool
Submit your jobs as Standard or Vanilla Universe jobs and they will be matched and run on the Globus resources
www.cs.wisc.edu/condor
What if a Globus resource kills my GlideIn?
That resource will disappear from your pool and you jobs will be rescheduled on other machines
What if all my jobs are done before a GlideIn runs?
If the glided-in Condor daemons are not matched with a job in 10 minutes, they terminate
www.cs.wisc.edu/condor
Group
Condor
your
workstation
personal
Condor
Stages executable and standard I/O using Globus GASS
Jobmanager changes will be folded into a future release of Globus
Credential management in progress
Automatic GlideIn
Matchmaking in Globus Universe
Use Globus GRIS to create ClassAds for Globus resources and match them to job ClassAds
www.cs.wisc.edu/condor
Questions
and