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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 Suite (HTCSS) 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 8.9.8 released!

August 6, 2020

The HTCondor team is pleased to announce the release of HTCondor 8.9.8. This development series release contains new features that are under development. This release contains all of the bug fixes from the 8.8.10 stable release. Enhancements in the release include: Added htcondor.dags and htcondor.htchirp to the HTCondor Python bindings; New condor_watch_q tool that efficiently provides live job status updates; Added support for marking a GPU offline while other jobs continue; The condor_master command does not return until it is fully started; Deprecated several Python interfaces in the Python bindings. Further details can be found in the Development Version History and the Stable Version History. HTCondor 8.9.8 binaries and source code are available from our Downloads page.
HTCondor 8.8.10 released!

August 6, 2020

The HTCondor team is pleased to announce the release of HTCondor 8.8.10. A stable series release contains significant bug fixes. Highlights of this release are: condor_qedit can no longer be used to disrupt the condor_schedd; Fixed a bug where the SHARED_PORT_PORT configuration setting was ignored; Ubuntu 20.04 and Amazon Linux 2 are now supported; In MacOSX, HTCondor now requires LibreSSL, available since MacOSX 10.13. More details about the fixes can be found in the Version History. HTCondor 8.8.10 binaries and source code are available from our Downloads page.
Miron Livny wins IEEE 2020 Outstanding Technical Achievement Award

July 21, 2020

The IEEE Computer Society Technical Committee on Distributed Processing (TCDP) has named Professor Miron Livny from University of Wisconsin as the recipient of the 2020 Outstanding Technical Achievement Award. See https://tc.computer.org/tcdp/awardrecipients/.
2020 IEEE TDCP ICDCS High Impact Paper Award

July 21, 2020

The initial HTCondor research paper from 1988, “Condor – A Hunter of Idle Workstations”, has won the 2020 IEEE TDCP ICDCS High Impact Paper Award. "To celebrate the 40 years anniversary of the International Conference on Distributed Systems (ICDCS), the IEEE Technical Committee on Distributed Processing (TCDP) Award Committee has selected ICDCS High Impact Papers that have profoundly influenced the field of distributed computing systems." See https://tc.computer.org/tcdp/awardrecipients/
HTCondor-CE 4.4.1 released!

July 16, 2020

The HTCondor team is pleased to announce the release of HTCondor-CE 4.4.1. Highlights of this release are: Fixed a stacktrace with the BDII provider when "HTCONDORCE_SPEC" isn't defined in the local HTCondor configuration; Fixed a race condition that could result in removed jobs being put on hold; Improved performance of the HTCondor-CE View. A complete list of new features and fixed bugs can be found in the version history. HTCondor-CE 4.4.1 binaries are available from our YUM Repository.
HTCondor-CE 3.4.3 released!

July 16, 2020

The HTCondor team is pleased to announce the release of HTCondor-CE 3.4.3. Highlights of this release are: Fixed a stacktrace with the BDII provider when "HTCONDORCE_SPEC" isn't defined in the local HTCondor configuration; Fixed a race condition that could result in removed jobs being put on hold. A complete list of new features and fixed bugs can be found in the version history. HTCondor-CE 3.4.3 binaries are available from our YUM Repository.

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