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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 8.9.9 released!

October 26, 2020

The HTCondor team is pleased to announce the release of HTCondor 8.9.9. This development series release contains new features that are under development. This release contains all of the bug fixes from the 8.8.11 stable release. Enhancements in the release include: The RPM packages require globus, munge, scitokens, and voms from EPEL; Improved cgroup memory policy settings that set both hard and soft limit; Cgroup memory usage reporting no longer includes the kernel buffer cache; Numerous Python binding improvements, see version history; Can create a manifest of files on the execute node at job start and finish; Added provisioner nodes to DAGMan, allowing users to provision resources; DAGMan can now produce .dot graphs without running the workflow. Further details can be found in the Development Version History and the Stable Version History. HTCondor 8.9.9 binaries and source code are available from our Downloads page.
HTCondor 8.8.11 released!

October 21, 2020

The HTCondor team is pleased to announce the release of HTCondor 8.8.11. A stable series release contains significant bug fixes. Highlights of this release are: HTCondor now properly tracks usage over vanilla universe checkpoints; New ClassAd equality and inequality operators in the Python bindings; Fixed a bug where removing in-use routes could crash the job router; Fixed a bug where condor_chirp would abort after success on Windows; Fixed a bug where using MACHINE_RESOURCE_NAMES could crash the startd; Improved condor c-gahp to prioritize commands over file transfers; Fixed a rare crash in the schedd when running many local universe jobs; With GSI, avoid unnecessary reverse DNS lookup when HOST_ALIAS is set; Fix a bug that could cause grid universe jobs to fail upon proxy refresh. More details about the fixes can be found in the Version History. HTCondor 8.8.11 binaries and source code are available from our Downloads page.
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/

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