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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.

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User of the day

User profile Profile Robish
Me? I'm just an I.T. nerd of 18 years and couch-scientist from Ireland trying to help out a bit. God bless the Discovery Channel :-)


Migration to LHC@home
Following the Theory simulations added 1 week ago, we have now also deployed the CMS and LHCb applications from the T4T/vLHCathome project on the consolidated, original LHC@home.

Registration of new accounts on the Virtual LHC@home project is therefore closed from now on.

We would like to warmly thank you all for your contributions, and to ask you to continue crunching the VM applications on the LHC@home project!

If you have not already registered there in the past, please connect to:

We will keep this old site up for as long as needed. You may detach from the old project at your leasure, and attach to LHC@home instead.

--The team
21 Nov 2016, 10:53:06 UTC · Comment

CMS Servers are up again
I have just been informed (and confirmed) that the servers we use at RAL have been shut down due to the CVE-2016-5195 "Dirty COW" Linux kernel vulnerability. They will remain down until a patch is available and applied.
It would be prudent to suspend the CMS application in BOINC until the servers are restarted.
24 Oct 2016, 15:50:59 UTC · Comment

SSL connection option
For those with BOINC clients above version 7.2, there is now an option to connect with SSL on the URL:


This server runs a web-front end and scheduler for this project. To use it, please detach fron the project, and re-attach using the new HTTPS URL.

The other project daemons still run on the same server as before. The old server and URL will remain in place until further notice.

So far our tests of this distributed server setup works fine, and we would appreciate feedback in case of problems.
22 Sep 2016, 9:30:11 UTC · Comment

Removing the restriction on running work units
After experimenting with a number of options, a solution has been found to provide a default limit on the number running work units per host for new volunteers which can be disabled by those who are more experienced.

Once implemented, a new setting will be available in the project preferences where the Max # jobs can be set. In order to provide this, three steps are required.

  • Update the project to support the option
  • Updated everyone's project preferences to set this value to 2 tasks
  • Remove current the project limit

This should be transparent for everyone and only those who wish to receive more tasks will get them once they have changed the value of this new setting. Work on this will start immediately and should be completed within the next few days. 6 Sep 2016, 13:13:54 UTC · Comment

Congratulations and thanks to all our volunteers for helping CERN to reach the extremely impressive total of 3 Trillion events successfully simulated on our Theory project.

We have recently received warm testimonials from scientists who use and appreciate the MCPlots database which is the destination of all your work. We have posted these on our "Science" message board at:

21 Aug 2016, 8:23:45 UTC · Comment

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