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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.

Our annual user conference, HTCondor Week is scheduled for May 19-22, 2015 in Madison, Wisconsin. Save the date!

Latest News [RSS]

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.
HTCondor Week 2015 announced!

February 11, 2015

HTCondor Week 2015 is May 19–22, 2015 in Madison, Wisconsin. Join other users, administrators, and deveopers for the opportunity to exchange ideas and experiences, to learn about the latest research, to experience live demos, and to influence our short and long term research and development directions.
HTCondor 8.2.7 released!

February 10, 2015

The HTCondor team is pleased to announce the release of HTCondor version 8.2.7. A stable series release contains significant bug and security fixes. This version contains: sendmail is used by default for sending notifications (CVE-2014-8126); corrected input validation, which prevents daemon crashes; an update, such that grid jobs work within the current Google Compute Engine; a bug fix to prevent an infinite loop in the python bindings; a bug fix to prevent infinite recursion when evaluating ClassAd attributes. A complete list of fixed bugs can be found in the Version History. HTCondor 8.2.7 binaries and source code are available from our Downloads page.

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