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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.
This is just a BOINC server. Please visit the LHC@home information for more information. If you have any problems or questions please visit the Message Boards, Questions and Answers and FAQ.

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User of the day

User profile Profile NOSTROMUS
Darker? I like Darker....


SSL on lhcathomedev.cern.ch
We have now got a proper certificate for our DEV server, and use the opportunity to change name to: LHCathome-dev, so please use this URL from now on for the LHC@home-dev project:


The former test SSL URL to this project on the production server will be stopped and redirected here.

Thanks for your continued support and help!
17 Jan 2017, 10:14:02 UTC · Comment

CMS Servers up again

YEP Linux is just the greatest and most secure OS ever 😎

.....I didn't do it.......and I never liked a Dirty Cow

(OK I won't restart the OS war)
24 Oct 2016, 15:50:09 UTC · Comment

Server Consolidation
As mentioned previously, we would like to consolidate the existing production servers (Sixtrack, vLHC and ATLAS) into a single service. We hope that by doing this we can improve the support and reduce the confusion. One benefit for all is that there will be a single forum so both us and our volunteer moderators can be more effective.

The transition will have two phases, commissioning and decommissioning. First a new server will be prepared with a similar configuration as this dev project but based on the Sixtrack DB. This is because they have the most users and 50% of the active users from vLHC and ATLAS are already there, hence it should minimize the impact. Once this new server is ready, it will be opened up for use in parallel with the existing three servers.

Next comes the decommissioning. For Sixtrack this should be straight forward, the URLs for the old host will be redirected to the new host. For vLHC and ATLAS things will be a little more complicated. Those users who are already registered with Sixtrack will be encouraged to move to the new server. For those who are not registered they can either register themselves and move or we can do a bulk registration. Tasks can then be stopped and the URLs redirected.

Finally there is the issue of credit. It should be possible to migrate the credit from the old servers to the new server. This can only really be done once the servers are no longer used. There is no time critical aspect, just until this is done, only the new credit will be seen.

Comments and feedback on this proposal are welcome.

P.S The dev project will stay around as it is.
5 Oct 2016, 12:56:22 UTC · Comment

Migration to SSL
The scheduler and web pages of this dev project are now also published on the URL:


Please detach and re-attach to this new URL with your BOINC clients. The old project server is still running, and also the file upload and validation daemons run on the old server for now.

Later on after a test period, we will redirect the old URL. Then we will proceed in a similar way with our production project.
16 Sep 2016, 14:18:50 UTC · Comment

Task Tracker
I have added a task tracker to the top left of the page so everyone can see what issues we know about, which one are being worked on and what is being done right now. It still needs populating with a few items. 3 Aug 2016, 10:08:09 UTC · Comment

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