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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 8.3.7 released!

July 27, 2015

The HTCondor team is pleased to announce the release of HTCondor 8.3.7. This development series release contains new features that are under development. Enhancements in the release include: default configuration settings have been updated to reflect current usage; the ability to preempt dynamic slots, such that a job may match with a partitionable slot; the ability to limit the number of jobs per submission and the number of jobs per owner by setting configuration variables. Further details can be found in the Version History. HTCondor 8.3.7 binaries and source code are available from our Downloads page.
HTCondor 8.3.6 released!

June 23, 2015

The HTCondor team is pleased to announce the release of HTCondor 8.3.6. This development series release contains new features that are under development. Enhancements in the release include: initial Docker universe support; IPv4/IPv6 mixed mode support. Further details can be found in the Version History. HTCondor 8.3.6 binaries and source code are available from our Downloads page.
HTCondor 8.3.5 released!

April 20, 2015

The HTCondor team is pleased to announce the release of HTCondor 8.3.5. A development series release contains new features that are under development. This release contains all of the bug fixes from the 8.2.8 stable release. A few of the enhancements in this release include: new features that increase the power of job specification in the submit description file; RPMs for Red Hat Enterprise Linux 6 and 7 are modularized and only distributed via our YUM repository; The new condor-all RPM requires the other HTCondor RPMs of a typical HTCondor installation. Further details can be found in the Version History. HTCondor 8.3.5 binaries and source code are available from our Downloads page.
HTCondor 8.2.8 released!

April 7, 2015

The HTCondor team is pleased to announce the release of HTCondor version 8.2.8. A stable series release contains significant bug and security fixes. This version contains: a bug fix to reconnect a TCP session when an HTCondorView collector restarts; a bug fix to avoid starting too many jobs, only to kill some chosen at random. A complete list of fixed bugs can be found in the Version History. HTCondor 8.2.8 binaries and source code are available from our Downloads page.
HTCondor helps astronomers with the hydrogen location problem

March 26, 2015

This UW Madison news article discusses how a new computational approach permits evaluation of hydrogen data using software, which may replace the time consuming manual approach. Putting HTCondor into the mix scales well given the vast quantities of data expected as Square Kilometer Array radio telescope is realized.
HTCondor Week 2015 Registration Open

March 25, 2015

We invite HTCondor users, administrators, and developers to HTCondor Week 2015, our annual HTCondor user conference, in beautiful Madison, Wisconsin, May 19-22, 2015. 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.

HTCondor 8.3.4 released!

March 5, 2015

The HTCondor team is pleased to announce the release of HTCondor 8.3.4. This development release contains a single bug fix for a problem introduced in version 8.3.3 that can cause jobs to not be matched to resources when the condor_schedd is flocking. This 8.3.4 release also has a known issue which prevents a mixed mode, IPv4 and IPv6 HTCondor installation from starting jobs. If using IPv4 and IPv6 in mixed mode communication is required, please continue using HTCondor version 8.3.2. The issue will be fixed in version 8.3.5. Further details can be found in the Version History. HTCondor 8.3.4 binaries and source code are available from our Downloads page.
HTCondor 8.3.3 released!

February 19, 2015

The HTCondor team is pleased to announce the release of HTCondor 8.3.3. This development series release contains new features that are under development. This release contains all of the bug fixes from the 8.2.7 stable release. This new version contains: the ability to encrypt a job's directory on Linux execute hosts; enhancements to EC2 grid universe jobs; a more efficient query protocol, including the ability to query the condor_schedd daemon's autocluster set. A complete list of new features and fixed bugs can be found in the Version History. HTCondor 8.3.3 binaries and source code are available from our Downloads page.

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