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Computing with HTCondor™

Our goal is to develop, implement, deploy, and evaluate mechanisms and policies that support High Throughput Computing (HTC) on large collections of distributively owned computing resources. Guided by both the technological and sociological challenges of such a computing environment, the Center for High Throughput Computing at UW-Madison has been building the open source HTCondor distributed computing software (pronounced "aitch-tee-condor") and related technologies to enable scientists and engineers to increase their computing throughput.

Note: The HTCondor Software Suite (HTCSS) was known as 'Condor' from 1988 until its name changed in 2012. If you are looking for Phoenix Software International's software development and library management system for z/VSE or z/OS, click here.

Latest News [RSS]

HTCondor Security Release: 8.9.11

January 27, 2021

The HTCondor team is pleased to announce the release of HTCondor 8.9.11. These releases contain important fixes for security issues. Affected users should update as soon as possible. More details on the security issues are in the Vulnerability Reports: HTCondor binaries and source code are available from our Downloads page.
Come find us on Twitter!

December 23, 2020

After a long social media absence, we’ve resuscitated our Twitter acount where we’ve been posting about HTCondor news, events, philosophy and other distributed systems related banter. Come find us and chime in!
Campus Workshop on distributed high-throughput computing (dHTC) February 8-9, 2021

December 18, 2020

Save the date and register now for another Campus Workshop on distributed high-throughput computing (dHTC), February 8-9, 2021, offered by the Partnership to Advance Throughput computing (PATh). All campus cyberinfrastructure (CI) staff are invited to attend!

Feb 8: Training on Using and Facilitating the Use of dHTC and the Open Science Grid (OSG), 2-5pm ET. seats limited; register ASAP!
Feb 9: dHTC Virtual Office Hours with breakout rooms for discussion on all things dHTC, including OSG services for campuses and CC* awards, 2-5pm ET. unlimited seats

While there is no fee for either day, registration is required for participants to receive virtual meeting room details and instructions for training accounts via email. Please feel free to send any questions about the event to
HTCondor 8.9.10 released!

November 24, 2020

The HTCondor team is pleased to announce the release of HTCondor 8.9.10. This development series release contains new features that are under development. This release contains all of the bug fixes from the 8.8.12 stable release. Enhancements in the release include: Fix bug where negotiator stopped making matches when group quotas are used; Support OAuth, SciTokens, and Kerberos credentials in local universe jobs; The Python schedd.submit method now takes a Submit object; DAGMan can now optionally run a script when a job goes on hold; DAGMan now provides a method for inline jobs to share submit descriptions; Can now add arbitrary tags to condor annex instances; Runs the "singularity test" before running the a singularity job. Further details can be found in the Development Version History and the Stable Version History. HTCondor 8.9.10 binaries and source code are available from our Downloads page.
HTCondor 8.8.12 released!

November 23, 2020

The HTCondor team is pleased to announce the release of HTCondor 8.8.12. A stable series release contains significant bug fixes. Highlights of this release are: Added a family of version comparison functions to ClassAds; Increased default Globus proxy key length to meet current NIST guidance. More details about the fixes can be found in the Version History. HTCondor 8.8.12 binaries and source code are available from our Downloads page.
National Science Foundation establishes a partnership to advance throughput computing

October 26, 2020

Recognizing the University of Wisconsin-Madison’s leadership role in research computing, the National Science Foundation announced this month that the Madison campus will be home to a five-year, 22.5 million dollar initiative to advance high-throughput computing. The Partnership to Advance Throughput Computing (PATh) is driven by the growing need for throughput computing across the entire spectrum of research institutions and disciplines. The partnership will advance computing technologies and extend adoption of these technologies by researchers and educators. Read the full article:

Save the Date! HTCondor Week 2021

HTCondor Week 2021 will be a free, virtual event taking place the week of May 24-28, 2021. Please save the dates on your calendars; we'll follow up with a detailed schedule and more information soon.



Research and Development