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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 8.3.3 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.
HTCondor assisted the paleobiology application of DeepDive

February 5, 2015

This UW Madison news article describes the paleobiology application of the DeepDive system, which used text-mining techniques to extract data from publications and build a database. The quality of the database contents equaled that achieved by scientists. HTCondor helped to provide the million hours of compute time needed to build the database from tens of thousands of publications.
HTCondor 8.3.2 released!

December 23, 2014

The HTCondor team is pleased to announce the release of HTCondor 8.3.2. This development series release contains new features that are under development. This release contains all of the bug fixes from the 8.2.6 stable release. This new version contains: the next installment of IPv4/IPv6 mixed mode support: a submit node can simultaneously interact with an IPv4 and an IPv6 HTCondor pool; scalability improvements: a reduced memory foot-print of daemons, a reduced number of TCP connections between submit and execute machines, and an improved responsiveness from a busy condor_schedd to queries. A complete list of new features and fixed bugs can be found in the Version History. HTCondor 8.3.2 binaries and source code are available from our Downloads page.
HTCondor 8.2.6 released!

December 16, 2014

The HTCondor Team is pleased to announce the release of HTCondor version 8.2.6. This new version contains: a bug fix to the log rotation of the condor_schedd on Linux platforms; transfer_input_files now works for directories on Windows platforms; a correction of the flags passed to the mail program on Linux platforms; a RHEL 7 platform fix of a directory permission that prevented daemons from starting. A complete list of fixed bugs can be found in the Version History. HTCondor 8.2.6 binaries and source code are available from our Downloads page.
HTCondor 8.2.5 released!

December 1, 2014

The HTCondor Team is pleased to announce the release of HTCondor version 8.2.5. This new version contains: an updated RPM installation script that preserves a modified condor_config.local file; OpenSSL version 1.0.1j for Windows platforms. a complete list of fixed bugs and features can be found in the Version History. HTCondor 8.2.5 binaries and source code are available from our Downloads page.
Registration open for European HTCondor Pool Admin Workshop: Dec. 8th - Dec. 11th, 2014

November 18, 2014

The HTCondor team, together with Worldwide LHC Computing Grid Deployment Board, is offering a four-day workshop the 8th through the 11th of December at CERN in Geneva, Switzerland, for HTCondor pool administrators. Topics envisioned include pool configuration, management, theory of operation, sharing of best practices and experiences, and monitoring of individual HTCondor batch pools. Special subjects of emphasis may include: scheduling, pool policy selection, performance tuning, debugging failures, and previews of upcoming features of HTCondor. Time will be provided for question and answer sessions. Attendees should have some knowledge of Linux and network administration, but no HTCondor experience will be required. See the workshop's web site to register and for more details.

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