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 profile Profile [AF>Libristes>GNU-Linux] xipehuz
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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

Latest software versions to use
Following our recent upgrade of vboxwrapper for all apps to the latest v26178, we can now recommend everyone to use VirtualBox version 5.0.10 or 5.0.12 (with their respective extension packs) together with Berkeley's latest recommended BOINC version 7.6.22 from http://boinc.berkeley.edu/download.php.

No known bugs exist with these choices.

The team
11 Jan 2016, 9:11:43 UTC · Comment

Server interruption Tuesday morning
The LHC@home servers will be down for a short while from 6:30 UTC Tuesday 10th November for a database update. 9 Nov 2015, 7:48:42 UTC · Comment

Migrating Theory VMs to 64 bit
We are starting the migration from a 32bit to a 64bit VM for our Theory simulations. A beta application is available for volunteers to test - to participate, please check the box "Theory Simulations 64" (inside "Edit vLHCathome preferences"). You also need to accept test applications to get these tasks.

IMPORTANT: Hardware virtualization technology extensions (VT-x for Intel or AMD-V for AMD) need to be enabled in your host CPU as indicated on the http://lhcathome.web.cern.ch/join-us page. You can find more information here for Windows and Linux systems: http://www.sysprobs.com/disable-enable-virtualization-technology-bios. Mac systems are OK.

The "Show VM console" layout is simpler with the new VM - the hot keys used are:
ALT-F1: Boot console (only used while the VM boots)
ALT-F2: System information: top running processes, memory usage, etc.
ALT-F3: Job logging - combined scheduler, stdout, error logs (colour coded)

The "Show graphics" logs are also slightly modified.

Otherwise this new application is similar to the "Theory Simulations" application, but it uses the latest vboxwrapper version; 26178.

We have started drip-feeding new beta tasks with the Theory 64 bit application to validate the app. Then there will be more jobs coming next week.

The team
30 Oct 2015, 10:20:27 UTC · Comment

CMS simulation beta tasks
As part of the preparations to run more physics simulations on the Virtual LHC@home platform, we have submitted a few work units with the CMS beta application on this project.

If you wish to try one of these, you need to configure your BOINC project preferences to accept beta test applications. Furthermore, you need to ensure that your computer can run 64 bits VMs. (VTX must be enabled.)

If you prefer to stay with Theory simulations only, you can indicate this in your BOINC project preferences for this project.
5 Oct 2015, 14:01:42 UTC · Comment

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