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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]

HTCondor 8.3.0 released!

August 12, 2014

The HTCondor Team is pleased to announce the release of HTCondor version 8.3.0. This development release contains all the bug fixes from the stable release version 8.2.2. This first release of the 8.3 series contains performance improvements. In one improvement, the condor_negiotator can request the batching of resource requests from the condor_schedd, improving performance over high latency (wide-area) network links. A complete list of bugs fixed and features can be found in the Version History. HTCondor 8.3.0 binaries and source code are available from our Downloads page.
HTCondor 8.2.2 released!

August 7, 2014

The HTCondor team is pleased to announce the release of HTCondor version 8.2.2. This new version contains: support for RHEL 7, and the RPM is modernized; a bug fix for the condor_shared_port daemon eliminates a periodic two-week restart; a bug fix in the detection of hyper-threaded cores on Linux and Mac OSX; a bug fix for condor_q when using the -format option; the condor_collector daemon on a Linux 3.14 or more recent kernel responds faster after a bug fix. A complete list of bugs fixed can be found in the Version History. HTCondor 8.2.2 binaries and source code are available from our Downloads page.
HTCondor Security Release: 8.2.1

July 7, 2014

The HTCondor team is pleased to announce the release of HTCondor version 8.2.1. This release contains an important fix for a security issue introduced in version 8.1.4. Affected users should update as soon as possible. More details on the security issue can be found here. A complete list of bugs fixed can be found in the Version History. HTCondor 8.2.0 binaries and source code are available from our Downloads page.
HTCondor 8.2.0 released!

June 24, 2014

The HTCondor team is pleased to announce the release of HTCondor 8.2.0. This new version contains: configuration is more powerful with new syntax and features, and the default configuration policy does not preempt jobs, monitoring is enhanced and now integrates with Ganglia, automated detection and management of GPUs, numerous scalability enhancements improve performance, an improved Python API including support for Python 3, new native packaging and ports are available for the latest Linux distributions including Red Hat 7 Beta and Debian 7, cloud computing improvements including support for EC2 spot instances, OpenStack, and condor_ssh_to_job directly into EC2 jobs, grid universe jobs can now target Google Compute Engine and BOINC servers, partitionable slots now are compatible with condor_startd RANK expressions, and consumption policies permit partitionable slots to be split into dynamic slots at negotiation time, improved data management including dynamic adjustment of the level of file transfer concurrency based on disk load, and experimental support to allow the execution of a job to be overlaid with the transfer of output files from the previous different job, and the new condor_sos tool helps administrators manage overloaded daemons. A complete list of bugs fixed can be found in the Version History. HTCondor 8.2.0 binaries and source code are available from our Downloads page.
HTCondor 8.0.7 released!

June 5, 2014

The HTCondor team is pleased to announce the release of HTCondor 8.0.7. This new version contains: Bosco support for OS X Mavericks (10.9); experimental support for compiling standard universe programs with the Intel C Compiler; a fix for a memory leak when using cgroups; several bug fixes for crashes under rare circumstances. A complete list of bugs fixed can be found in the Version History. HTCondor 8.0.7 binaries and source code are available from our Downloads page.
HTCondor 8.1.6 released!

May 22, 2014

The HTCondor Team is pleased to announce the release of HTCondor version 8.1.6. Major new features include: automatic recognition, scheduling, and managment of GPUs; submit jobs to run on a BOINC server, using the grid universe; major new features for configuration: file inclusion to incorporate configuration, metaknobs--incorporation of predefined sets of configuration, conditional configuration using if/else syntax. A complete list of bugs fixed and features can be found in the Version History. HTCondor 8.1.6 binaries and source code are available from our Downloads page.
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.

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