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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 8.7.6 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 8.7.6binaries 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 8.7.4 released!

October 31, 2017

The HTCondor team is pleased to announce the release of HTCondor 8.7.4. This development series release contains new features that are under development. This release contains all of the bug fixes from the 8.6.7 stable release. Enhancements in the release include: Improvements to DAGMan including support for late job materialization; Updates to condor_annex including improved status reporting; When submitting jobs, HTCondor can now warn about job requirements; Fixed a bug where remote CPU time was not recorded in the history; Improved support for OpenMPI jobs; The high availability daemon now works with IPV6 and shared_port; The HTCondor Python bindings are now available for Python 2 and 3 in pip. Further details can be found in the Development Version History and the Stable Version History. HTCondor 8.7.4 binaries and source code are available from our Downloads page.
HTCondor 8.6.7 released!

October 31, 2017

The HTCondor team is pleased to announce the release of HTCondor 8.6.7. A stable series release contains significant bug fixes. Highlights of this release are: Fixed a bug where memory limits might not be updated in cgroups; Add SELinux type enforcement rules to allow condor_ssh_to_job to work; Updated systemd configuration to shutdown HTCondor in an orderly fashion; The curl_plugin utility can now do HTTPS transfers; Specifying environment variables now works with the Python Submit class. More details about the fixes can be found in the Version History. HTCondor 8.6.7 binaries and source code are available from our Downloads page.
NCSA calls on HTCondor partnership to process data for the Dark Energy Survey

October 30, 2017

HPCWire recently published an aritcle on how HTCondor enables NCSA to take raw data from the Dark Energy camera telescope and process and disseminate the results within hours of observations occurring.

Save the dates!

HTCondor Week 2018 will be held Monday May 21 through Thursday May 24, 2018, at the Fluno Center on the University of Wisconsin-Madison campus. Details to follow in the weeks to come.

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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