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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 April 28-30, 2014. Save the date!

Latest News [RSS]

HTCondor 8.1.5 released!

April 15, 2014

The HTCondor Team is pleased to announce the release of HTCondor version 8.1.5. Major new features include: a change to the default policy, such that it does not preempt jobs; several new instances of non-blocking I/O to improve performance; fewer server resources are used by the condor_schedd when handling condor_q requests; a bug fix, such that large submit description files do not cause condor_submit to crash; a bug fix, such that large configuration files do not cause the condor_master daemon to crash. A complete list of bugs fixed and features can be found in the Version History. HTCondor 8.1.5 binaries and source code are available from our Downloads page.
OpenSSL vulnerability

April 10, 2014

HTCondor users who are using the SSL or GSI authentication methods, or submitting grid universe jobs may be vulnerable. Please see the post on the HTCondor-users mailing list.
HTCondor 8.1.4 released!

February 27, 2014

The HTCondor Team is pleased to announce the release of HTCondor version 8.1.4. This development release contains all the bug fixes from the stable release version 8.0.6. Major new features include: added grid universe support for Google Compute Engine; support for defining custom resources that easily manage GPUs; a new tool that does GPU discovery; improved scalability when using the shared port service; Python 3 support; enhanced resilience due to the prompt detection of network failures. A complete list of bugs fixed and features can be found in the Version History. HTCondor 8.1.4 binaries and source code are available from our Downloads page.
Consider presenting your work at HTCondor Week 2014

February 20, 2014

HTCondor Week attendees are interested in hearing about your efforts during our annual meeting, April 28-30. Please consider presenting. Details for adding your talk to the schedule are given in this page of Information for HTCondor Week Speakers.
HTCondor 8.0.6 released!

February 11, 2014

The HTCondor team is pleased to announce the release of HTCondor 8.0.6. This new version contains a port of HTCondor for Red Hat Enterprise Linux 7.0 Beta on the x86_64 architecture that includes support for the standard universe. It also contains bug fixes for: transferring files larger then 4 GiB on Windows and 32-bit platforms; using a minimum of 1024-bit keys on proxy certificates generated by HTCondor; accepting DAG input files larger then 2 GiB; the Windows MSI installer setting up a proper configuration for the VM universe; honoring CPU affinity on Windows platforms; issues with a failing condor_schedd daemon, when HTCondor is compiled with gcc 4.8+, the default compiler on recent Fedora releases. A complete list of bugs fixed can be found in the Version History. HTCondor 8.0.6 binaries and source code are available from our Downloads page.
HTCondor Week 2014 Announced: April 28-30

January 10, 2014

HTCondor Week 2014, our annual HTCondor user conference, is scheduled for April 28-April 30, 2014. We will again host HTCondor Week at the Wisconsin Institutes for Discovery in beautiful Madison, Wisconsin.

In a change from previous years, technical talks will begin on Monday. See the web site for current details.

At HTCondor Week, you can look forward to:

  • Technical talks on usage and deployment from developers and your fellow users
  • Talks and tutorials on new HTCondor features
  • Talks on future plans for HTCondor
  • Introductory tutorials on using and administrating HTCondor
  • The opportunity to meet with HTCondor developers and other users

Information on registration and scheduling will be available soon.

HTCondor 8.1.3 released!

December 23, 2013

The HTCondor Team is pleased to announce the release of HTCondor version 8.1.3. This development release contains all the bug fixes from the stable release version 8.0.5. Major new features include: the parsing of configuration has changed such that comments are permitted within multi-line definitions; the condor_sos tool helps administrators manage overloaded daemons by causing commands to be handled with a higher priority; a new Python binding reads event logs. A complete list of bugs fixed and features can be found in the Version History. HTCondor 8.1.3 binaries and source code are available from our Downloads page.
HTCondor 8.0.5 released!

December 12, 2013

The HTCondor team is pleased to announce the release of HTCondor 8.0.5. This new version contains bug fixes for: a heavily loaded condor_schedd daemon crashing when starting a local universe job, a condor_schedd daemon failing to start due to illegal values in the job queue or accounting recovery logs, interactive jobs not running when using cgroups, permissions errors preventing java universe jobs from running, and VMware vm universe jobs removing useful devices. A complete list of bugs fixed can be found in the Version History. HTCondor 8.0.5 binaries and source code are available from our Downloads page.

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