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LHC@home

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:
    https://lhcathome.cern.ch/lhcathome/
  • 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

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NetRunner, Netizen, CyborgAnthropologue, Spécialiste en archéologie, paléographie et épigraphie du logiciel…

News

Optimising distribution of SixTrack tasks
Dear Volunteers,

we are trying to improve the distribution of SixTrack tasks. If your host could process more tasks but during the project update you don't receive any, can you let us know and send us your client logging report? Please continue the thread "SixTrack Tasks NOT being distributed" opened by Eric here:
http://lhcathomeclassic.cern.ch/sixtrack/forum_thread.php?id=4324
so that we can collect all the issues in only one place. In this way, we could try to better tune parameters controlling the distribution of tasks on the server side.

At the same time, we apologize for the loss of credits following the accidental deletion of lines in the main DB - please see message:
http://lhcathomeclassic.cern.ch/sixtrack/forum_thread.php?id=4362&postid=31563#31563
As you can see, task distribution is progressing regularly since the beginning of the week

Thanks in advance for your precious cooperation,
Alessio and Riccardo, for the SixTrack team
27 Jul 2017, 12:44:17 UTC · Comment


Aborted Work Units
After deleting many really old results from 2013 until March 2017 (was meant to
be December 2016) it seems many Tasks have been aborted. A full analysis
and report will be posted. No action required by volunteers. Eric.
24 Jul 2017, 12:26:54 UTC · Comment


CMS Jobs working again
It's been a few hours now since the Data Bridge appears to have been fixed and jobs are staging out normally. You can resume running CMS tasks at your will. 18 Jul 2017, 17:16:35 UTC · Comment


CMS@Home -- please set No New Tasks and perhaps temporarily run another project
There is a problem staging-out CMS@Home jobs to the Data Bridge. Until we find the cause, please set your CMS crunchers to No New Tasks, or temporarily move them to another app or project.
Sorry for the trouble, unfortunately it's beyond my capability to resolve.
16 Jul 2017, 21:37:26 UTC · Comment


No RESULTS accepted from Linux Kernel 4.8.*
As an emergency measure and over the weekend, I have set
max_results_day to -1 for all hosts running Linux (Ubuntu?)
Kernel 4.8.*. SixTrack is consistently crashing with an IFORT run
time formatted I/O error. This will avoid wasting your valuable
contributions. Eric.
14 Jul 2017, 13:50:37 UTC · Comment


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