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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]

European HTCondor workshop scheduled for June 6-9, 2017

November 2, 2016

The 2017 European HTCondor workshop will be held Tuesday, June 6 through Friday, June 9, 2017 at DESY in Hamburg, Germany. We will provide more details as they become available.
HTCondor 8.5.7 released!

September 29, 2016

The HTCondor team is pleased to announce the release of HTCondor 8.5.7. This development series release contains new features that are under development. This release contains all of the bug fixes from the 8.4.9 stable release. Highlights of the release are: The schedd can perform job ClassAd transformations; Specifying dependencies between DAGMan splices is much more flexible; The second argument of the ClassAd ? : operator may be omitted; Many usability improvements in condor_q and condor_status; condor_q and condor_status can produce JSON, XML, and new ClassAd output; To prepare for a 64-bit Windows release, HTCondor identifies itself as X86; Automatically detect Daemon Core daemons and pass localname to them. Further details can be found in the Development Version History and the Stable Version History. HTCondor 8.5.7 binaries and source code are available from our Downloads page.
HTCondor 8.4.9 released!

September 29, 2016

The HTCondor team is pleased to announce the release of HTCondor 8.4.9. A stable series release contains significant bug fixes. Highlights of this release are: The condor_startd removes orphaned Docker containers on restart; Job Router and HTCondor-C job submission prompts schedd reschedule; Fixed bugs in the Job Router's hooks; Improved systemd integration on Enterprise Linux 7; Upped default number of Chirp attributes to 100, and made it configurable; Fixed a bug where variables starting with STARTD. or STARTER. were ignored. Further details can be found in the Version History. HTCondor 8.4.9 binaries and source code are available from our Downloads page.
HTCondor helps with GIS analysis

August 24, 2016

This article explains how the Clemson Center for Geospatial Technologies (CCGT) was able to use HTCondor to help a student analyze large amounts of GIS (Geographic Information System) data. The article contains a good explanation of how the data was divided up in such a way as to allow it to be processed using an HTCondor pool. Using HTCondor allowed the data to be analyzed in approximately 3 hours, as opposed to the 4.11 days it would have taken on a single computer.
HTCondor 8.5.6 released!

August 2, 2016

The HTCondor team is pleased to announce the release of HTCondor 8.5.6. This development series release contains new features that are under development. This release contains all of the bug fixes from the 8.4.8 stable release. Highlights of the release are: The -batch output for condor_q is now the default; Python bindings for job submission and machine draining; Numerous Docker usability changes; New options to limit condor_history results to jobs since last invocation; Shared port daemon can be used with high availability and replication; ClassAds can be written out in JSON format; More flexible ordering of DAGMan commands; Efficient PBS and SLURM job monitoring; Simplified leases for grid universe jobs. Further details can be found in the Development Version History and the Stable Version History. HTCondor 8.5.6 binaries and source code are available from our Downloads page.
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.

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