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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 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 8.7.7 released!

March 13, 2018

The HTCondor team is pleased to announce the release of HTCondor 8.7.7. This development series release contains new features that are under development. This release contains all of the bug fixes from the 8.6.10 stable release. Enhancements in the release include: condor_ssh_to_job now works with Docker Universe jobs; A 32-bit condor_shadow is available for Enterprise Linux 7 systems; Tracks and reports custom resources, e.g. GPUs, in the job ad and user log; condor_q -unmatchable reports jobs that will not match any slots; Several updates to the parallel universe; Spaces are now allowed in input, output, and error paths in submit files; In DAG files, spaces are now allowed in submit file paths. Further details can be found in the Development Version History and the Stable Version History. HTCondor 8.7.7 binaries and source code are available from our Downloads page.
HTCondor 8.6.10 released!

March 13, 2018

The HTCondor team is pleased to announce the release of HTCondor 8.6.10. A stable series release contains significant bug fixes. Highlights of this release are: Fixed a problem where condor_preen would crash on an active submit node; Improved systemd configuration to clean up processes if the master crashes; Fixed several other minor problems. More details about the fixes can be found in the Version History. HTCondor 8.6.10 binaries and source code are available from our Downloads page.
HTCondor Week 2018 Registration Open

February 28, 2018

We invite HTCondor users, administrators, and developers to HTCondor Week 2018, our annual HTCondor user conference, in beautiful Madison, Wisconsin, May 21-24, 2018. HTCondor Week features tutorials and talks from HTCondor developers, administrators, and users. It also provides an opportunity for one-on-one or small group collaborations throughout the week. In addition, the HEPiX Spring 2018 Workshop will also take place in Madison the preceding week.

HTCondor 8.7.6 released!

January 4, 2018

The HTCondor team is pleased to announce the release of HTCondor 8.7.6. This development series release contains new features that are under development. This release contains all of the bug fixes from the 8.6.9 stable release. Enhancements in the release include: Machines won't enter "Owner" state unless using the Desktop policy; One can use SCHEDD and JOB instead of MY and TARGET in SUBMIT_REQUIREMENTS; HTCondor now reports all submit warnings, not just the first one; DAGMan now updates the schedd periodically instead of every state change; The HTCondor Python bindings in pip are now built from the release branch. Further details can be found in the Development Version History and the Stable Version History. HTCondor 8.7.6 binaries and source code are available from our Downloads page.
HTCondor 8.6.9 released!

January 4, 2018

The HTCondor team is pleased to announce the release of HTCondor 8.6.9. A stable series release contains significant bug fixes. Highlights of this release are: Fixed a bug where some Accounting Groups could get too much surplus quota; Fixed a Python binding bug where some queries could corrupt memory; Fixed a problem where preen could block the schedd for a long time; Fixed a bug in Windows where the job sandbox would not be cleaned up; Fixed problems with the interaction between the master and systemd; Fixed a bug where MAX_JOBS_SUBMITTED could be permanently reduced; Fixed problems with very large disk requests. More details about the fixes can be found in the Version History. HTCondor 8.6.9 binaries and source code are available from our Downloads page.
HTCondor Security Release: 8.6.8 and 8.7.5

November 14, 2017

The HTCondor team is pleased to announce the release of HTCondor 8.6.8 and HTCondor 8.7.5. These releases contain an important fix for a security issue. Affected users should update as soon as possible. More details on the security issue are in the Vulnerability Report HTCondor binaries and source code are available from our Downloads page.

HTCondor Week 2018 - Registration is now open!

Our annual HTCondor Week user conference will be held in beautiful Madison, WI on May 21-24, 2018, and will feature tutorials and talks from HTCondor developers, administrators, and users. Visit the website soon for conference and hotel registration. Also note the HEPiX Spring 2018 Workshop will take place in Madison the preceding week (May 14-18)

The 2018 European HTCondor Workshop will be held Tuesday Sept 4 through Friday Sept 7, 2018, at the Rutherford Appleton Laboratory in Oxfordshire, UK. Details to follow in the months to come.

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