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This a research project that uses Internet-connected computers to advance Particle and Accelerator Physics. Participate by downloading and running a free program on your computer. By default, you can run the classic LHC@home application Sixtrack, for simulations of accelerator physics, and help researchers at CERN to improve the LHC.

Other LHC@home simulations that utilizes virtualization to run applications for Theory and experiment simulations for ATLAS, CMS and LHCb are also available. In order to run these, you need to install VirtualBox and enable the additional applications in your LHC@home project preferences.

Please visit the LHC@home web site for more documentation, data and instructions. If you have any problem, question or doubt please visit the Message Boards, Questions and Answers and FAQ sections of the project.

Join LHC@home

  • Read our rules and policies
  • This project uses BOINC. If you're already running BOINC, select Add Project. If not, download BOINC.
  • When prompted, select LHC@home from the list of projects, or enter the URL:
  • If you're running a command-line version of BOINC, create an account first.
  • If you have any problems, get help here.

User of the day

User profile Profile Wayne Hendricks


Possible systems failures
We seem to be in the early stages of a system failure for several sub-projects. The proxy server has flatlined and my running jobs monitor is dipping alarmingly. Please check if you are getting tasks flagged as computing failures, and set No New Tasks if so.
[Edit] On closer inspection, it may just be the CMS app. [/Edit]
Obviously I'll apologise if this is a false alarm, but it's the wrong time of day to expect a prompt response from the CERN admins.
18 Sep 2017, 22:00:28 UTC · Comment

New SixTrack exes
Dear all,

After testing them as the sixtracktest app, we have just pushed out executables to the sixtrack app. For the moment, we have exes only targeted for the main OSs, i.e. Windows, Linux, and the brand new one for MacOS. We are still finalising the definition of the plan classes with the sixtracktest app for targeting Android, freeBSD, and Arm CPUs - e.g. see

Thanks a lot for your contribution and ... happy crunching!
Alessio, for the sixtrack team
5 Sep 2017, 16:40:44 UTC · Comment

Deadline change for ATLAS jobs
Due to the tight deadline of the ATLAS tasks, we change to deadline of ATLAS jobs from 2 weeks to 1 week. The ATLAS job takes about 3-4 CPU hours to finish on a moderate CPU (2.5GFLOPS). 16 Aug 2017, 8:42:03 UTC · Comment

New ATLAS app version released for Linux hosts
We released a new version of the ATLAS app today, 2.41 for the x86_64-pc-linux-gnu platform.
The new features of this version include:
1. It requires the host OS to be either Scentific Linux 6 or Cent OS 7.
2. It require CVMFS and Singularity instead of Virtualbox to run the ATLAS jobs.
3. It is more efficient, as the avoidance of using Virtualbox.
Currently, this version is set to beta version.

For people who want to try it out,we provide a script to install everything including CVMFS, singularity here,

Try it if you are interested!
10 Aug 2017, 11:04:25 UTC · Comment

CMS Weekend problem
Warning: The WMAgent which controls CMS jobs appears to have a failed component very recently. Queue seems to be exhausted. Please set No New Tasks or change to a backup app while I try to raise someone at CERN to fix it. This could be a problem given that this is expected to be the heaviest weekend of the year for holiday travel in Europe... 5 Aug 2017, 4:31:20 UTC · Comment

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