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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 8.4.8 released!

July 5, 2016

The HTCondor team is pleased to announce the release of HTCondor 8.4.8. A stable series release contains significant bug fixes. Highlights of this release are: Fixed a memory leak triggered by the python htcondor.Schedd().query() call; Fixed a bug that could cause Bosco file transfers to fail; Fixed a bug that could cause the schedd to crash when using schedd cron jobs; condor_schedd now rejects jobs when owner has no account on the machine; Fixed a new bug in 8.4.7 where remote condor_history failed without -limit; Fixed bugs triggered by the reconfiguration of the high-availability daemon; Fixed a bug where condor_master could hang when using shared port on Windows ; Fixed a bug with the -xml option on condor_q and condor_status; A few other bug fixes, consult the version history. Further details can be found in the Version History. HTCondor 8.4.8 binaries and source code are available from our Downloads page.
HTCondor Week 2017 scheduled for May 2-5

June 27, 2016

HTCondor Week 2017 will be held Tuesday, May 2 through Friday, May 5, 2017 at the Fluno Center on the University of Wisconsin- Madison campus. We will provide more details as they become available.
HTCondor 8.5.5 released!

June 6, 2016

The HTCondor team is pleased to announce the release of HTCondor 8.5.5. This development series release contains new features that are under development. This release contains all of the bug fixes from the 8.4.7 stable release. Highlights of the release are: Improvements for scalability of EC2 grid universe jobs; Docker Universe jobs advertises remote user and system CPU time; Improved systemd support; The master can now run an administrator defined script at shutdown; DAGMan includes better support for the batch name feature. Further details can be found in the Version History. HTCondor 8.5.5 binaries and source code are available from our Downloads page.
HTCondor 8.4.7 released!

June 6, 2016

The HTCondor team is pleased to announce the release of HTCondor 8.4.7. A stable series release contains significant bug fixes. Highlights of this release are: Fixed a bug that could cause the schedd to become unresponsive; Fixed a bug where the Docker Universe would not set the group ID; Docker Universe jobs now drop all Linux capabilities by default; Fixed a bug where subsystem specific configuration parameters were ignored; Fixed bugs with history file processing on the Windows platform; A few other bug fixes, consult the version history. Further details can be found in the Version History. HTCondor 8.4.7 binaries and source code are available from our Downloads page.
HTCondor Week tutorials free to UW-Madison faculty, staff and students

May 11, 2016

Just a reminder that the Tuesday tutorials at HTCondor Week are free to UW-Madison faculty, staff and students. If you have any interest in using HTCondor and Center for High Throughput Computing resources, we'd love to see you on Tuesday.

However, as everyone knows, there ain't no such thing as a free lunch -- people who attend the tutorials without paying are not eligible for the lunch (you can still get snacks at the breaks, though).

HTCondor 8.5.4 released!

May 2, 2016

The HTCondor team is pleased to announce the release of HTCondor 8.5.4. This development series release contains new features that are under development. This release contains all of the bug fixes from the 8.4.6 stable release. For sites using partitionable slots, one of the fixes from the 8.4.6 release corrects a serious regression in version 8.5.3. Highlights of the release are: Fixed a bug that delays schedd response when significant attributes change; Fixed a bug where the group ID was not set in Docker universe jobs; Limit update rate of various attributes to not overload the collector; To make job router configuration easier, added implicit "target" scoping; To make BOSCO work, the blahp does not generate limited proxies by default; condor_status can now display utilization per machine rather than per slot; Improve performance of condor_history and other tools. Further details can be found in the Version History. HTCondor 8.5.4 binaries and source code are available from our Downloads page.

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