log in


This is a project that utilizes the CERN-developed CernVM virtual machine and the BOINC virtualization layer to harness volunteer cloud computing power for full-fledged LHC event physics simulation on volunteer computers.

The theory simulations that have been running as Test4Theory since 2011, were the first of a series of physics applications running on the LHC@home platform. Soon the theory simulations will be followed by more simulations from the LHC experiment collaborations. These applications exploit virtual machine technology, enabling volunteers to contribute to the huge computational task of searching for new fundamental particles and physics at CERN's LHC.

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 Board, Questions and Answers and FAQ sections of the project.

Join vLHCathome

  • Read our rules and policies
  • Create an account on this page, for this you will need an invitation code. In order to get an invitation code, please check out this post.
  • This project uses BOINC. If you're already running BOINC, select Add Project. If not, download BOINC.
  • When prompted, enter
  • 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 Jill
I'm a cartographer, working as a drafter and mapper for a survey company in Northern BC. I moved here from Ontario after I finished school.


Job output problems
Since 4pm yesterday, half of our job outputs are being blocked from returning to the MCPlots server. We are working to fix this problem and believe the outputs will be recovered correctly when it is solved.

The team

EDIT: Problem solved (but some jobs lost - sorry!)
2 May 2016, 9:33:30 UTC · Comment

MCplots machine reconfiguring
Just got this message from Anton for all volunteers:

sorry for not letting you know in advance - I started the migration of mcplots machines to openstack service and pause jobs processing to speed up the migration. The copilot input queue have enough jobs to keep T4T busy for several days and output queue will be processed once the migration is finished - nothing will be lost. I think the migration will be finished in 1-2 days.


EDIT: The reconfiguration was finished successfully after 2 days - thanks to all!
30 Mar 2016, 15:42:37 UTC · Comment

Server software update
We will update the BOINC server software for vLHCathome this afternoon to bring it to the same level as for our development project.

The server will be down for an hour or so. Thanks for your understanding and collaboration.
17 Mar 2016, 13:30:45 UTC · Comment

The project reaches ONE BILLION total credits this weekend !!
The vLHCathome (T4T) project will reach ONE BILLION total credits this weekend !!


Thanks to all our Test4Theory volunteers since 2011 - and a special thanks to Maeax for pointing out this amazing statistic in time for us to report it to everyone.

The team
11 Mar 2016, 14:57:27 UTC · Comment

Short server interruption 9-Feb.
Our LHC@home servers will be down for a short while Tuesday 9th in the morning for an upgrade of an underlying disk server. (Intervention postponed 1 week.) 2 Feb 2016, 8:26:39 UTC · Comment

... more

News is available as an RSS feed   RSS