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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 Week 2021 Preliminary Schedule, Registration Reminder

April 30, 2021

HTCondor Week 2021 is just over three weeks away! We are pleased to announce a preliminary schedule: https://agenda.hep.wisc.edu/event/1579/timetable/#20210524.detailed This will likely have some adjustments before the actual event, but it should still give people an overall sense of what to expect. Also, a reminder that registration is free but mandatory. Only registered users will be sent the meeting URL and password. You can sign up from our website: https://agenda.hep.wisc.edu/event/1579/registrations/239/
HTCondor-CE 5.1.0 released!

April 14, 2021

The HTCondor team is pleased to announce the release of HTCondor-CE 5.1.0. Highlights of this release are: Add support for ClassAd transforms to the JobRouter; Add mapped user and X.509 attribute to local HTCondor pool AccountingGroup mappings to Job Routers configured to use the ClassAd transform syntax; Accept BatchRuntime attributes from incoming jobs to set their maximum walltime; Update the HTCondor-CE registry to Python 3; Enable SSL authentication by default for READ/WRITE authorization levels; APEL reporting scripts now use history files in the local HTCondor PER_JOB_HISTORY_DIR to collect job data; Use the GlobalJobID attribute as the APEL record lrmsID. Please refer to the update instructions to update to this version: A complete list of new features and fixed bugs can be found in the version history. HTCondor-CE 5.1.0 binaries are available from our YUM Repository.
HTCondor 9.0.0 released!

April 14, 2021

The HTCondor team is pleased to announce the release of HTCondor 9.0.0. After two years of development, this is the first release of the new stable series. It includes all the enhancements and bug fixes in the 8.9 series. Many of these changes have focused on improving the security of HTCondor and improving the utility of the file transfer plugins. Highlights of this release are: Absent any configuration, a new HTCondor installation denies authorization to all users; AES encryption is used for all communication and file transfers by default (Hardware accelerated when available); New IDTOKEN authentication method enables fine-grained authorization control designed to replace GSI authentication; Improved support for GPUs, including machines with multiple GPUs; New condor_watch_q tool that efficiently provides live job status updates; Many improvements to the Python bindings, including new bindings for DAGMan and chirp; Improved curl, https, box, Amazon S3, and google drive file transfer plugins supporting uploads and authentication; File transfer times are now recorded in the job log; Added support for jobs that need to acquire and use OAUTH tokens; Many memory footprint and performance improvements in DAGMan; Submitter ceilings allow administrators to set limits on the number of running jobs per user across the pool. More details about the new features can be found in the Upgrade Section For a full list of changes, please consult the 8.9 version history Try out our new helpful installation scripts. HTCondor 9.0.0 binaries and source code are available from our Downloads page.
HTCondor 8.9.13 released!

March 30, 2021

The HTCondor team is pleased to announce the release of HTCondor 8.9.13. This development series release contains new features that are under development. This release contains all of the bug fixes from the 8.8.13 stable release. WARNING: We have changed the default security model in this release. It is not a drop-in replacement for any earlier release. Please read the notes before proceeding with an upgrade. Manual intervention may be required. Enhancements in the release include: Host based security is no longer the default security model; Hardware accelerated integrity and AES encryption used by default; Normally, AES encryption is used for all communication and file transfers; Fallback to Triple-DES or Blowfish when interoperating with older versions; Simplified and automated new HTCondor installations; HTCondor now detects instances of multi-instance GPUs; Fixed memory leaks (collector updates in 8.9 could leak a few MB per day); Many other enhancements and bug fixes, see version history for details. A complete list of new features and fixed bugs can be found in the version history. Try out our new helpful installation scripts. Further details can be found in the Development Version History and the Stable Version History. HTCondor 8.9.13 binaries and source code are available from our Downloads page.
HTCondor 8.9.12 no longer available

March 26, 2021

On March 26 2021 at 3:30pm the HTCondor v8.9.12 release was pulled down from our website after significant backwards-compatibility problems were discovered. We plan to fix these problems in v8.9.13 to be released by March 30. We apologize for any inconvenience.
HTCondor 8.9.12 released!

March 25, 2021

The HTCondor team is pleased to announce the release of HTCondor 8.9.12. This development series release contains new features that are under development. This release contains all of the bug fixes from the 8.8.13 stable release. WARNING: We have changed the default security model in this release. It is not a drop-in replacement for any earlier release. Please read the notes before proceeding with an upgrade. Manual intervention may be required. Enhancements in the release include: Host based security is no longer the default security model; Hardware accelerated integrity and AES encryption used by default; Normally, AES encryption is used for all communication and file transfers; Fallback to Triple-DES or Blowfish when interoperating with older versions; Simplified and automated new HTCondor installations; HTCondor now detects instances of multi-instance GPUs; Fixed memory leaks (collector updates in 8.9 could leak a few MB per day); Many other enhancements and bug fixes, see version history for details. A complete list of new features and fixed bugs can be found in the version history. Try out our new helpful installation scripts. Further details can be found in the Development Version History and the Stable Version History. HTCondor 8.9.12 binaries and source code are available from our Downloads page.

HTCondor Week 2021

HTCondor Week 2021 will be a free, virtual event taking place the week of May 24-28, 2021. Registration is required and open now: http://htcondor.org/HTCondorWeek2021

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