What is LHC@home?

This a volunteer computing 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.

Please note that some of the applications on LHC@home requre Virtual Box to be installed. Please visit the LHC@home information site for more information. If you have any problems or questions please visit the Message Boards, Questions and Answers and FAQ.

Join LHC@home

User of the Day

User profile Profile Steve Hawker*
I've been crunching since 2012 and the more I do, the more I like it. I try to crunch every project I can find. I don't have a server farm or a...


Downtime Wed 20/1
LHC@home servers will be down for a database upgrade tomorrow Wednesday 20th of January early afternoon GMT.

Sorry for the inconvenience, and happy crunching!
19 Jan 2021, 13:54:45 UTC · Discuss

Best wishes for 2021
We would like to warmly thank all our volunteers for your contributions during 2020!

The LHC@home team also wishes you a Happy and hopefully healthy 2021!

For those interested, please find some highlights of CERN activities during 2020 and recent findings from the CMS experiment on our web pages.
5 Jan 2021, 12:19:30 UTC · Discuss

Possible upload delays Wednesday 14/10
Due to an upgrade of our Ceph storage on Wednesday 14th of October, there might be delays to file uploads and data assimilation. Should be back to normal by Wednesday evening.
13 Oct 2020, 13:58:48 UTC · Discuss

BOINC database downtime
The LHC@home database will be down for a while this morning, due to a network interruption in the CERN data centre. Hence scheduler requests and uploads will fail for a while.

Sorry for the trouble and happy crunching.
7 Sep 2020, 6:22:24 UTC · Discuss

Interruption to CMS@Home, Wednesday 15th July
We need to interrupt the CMS project tomorrow to deploy a new Workflow Management Agent. This means that jobs will not be available from sometime tonight. We recommend that you set your CMS machines to No New Tasks as soon as possible, to avoid tasks terminating with an error if a job can't be fetched.
We anticipate jobs will be available again late Wednesday (European time). I'll update this thread when it is OK to proceed.
14 Jul 2020, 13:19:28 UTC · Discuss

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