Tue, 07/05/2011 - 09:39 — Daniel Lombraña... (Updated July 2013, BS)
Wed, 07/06/2011 - 08:44 — Daniel Lombraña... CernVM is a Virtual Software Appliance for the participants of CERN LHC experiments. The Appliance represents an extensible, portable and easy to configure user environment for developing and running LHC physics software both locally, on Grids and on Clouds, independently of Operating System software and hardware platforms (GNU/Linux, Windows, MacOSX).
The goal is to remove a need for the installation of the experiment software on each target platform, and thus to minimize the number of platforms (compiler-OS combinations) on which experiment software needs to be supported and tested. Visit the CernVM homepage for further details.
Tue, 07/05/2011 - 10:51 — Daniel Lombraña...
This project runs very large CERN software packages with complex dependencies that cannot be easily ported to all the volunteers' operating systems (Windows, GNU/Linux and Mac OS X). For this reason, we use a virtualization solution, which enables us to run complex codes independently of your platform. Additionally, using virtualization adds an extra layer of security, as if something goes wrong in the code execution this will not affect your computer.
Tue, 09/13/2011 - 14:04 — Daniel Lombraña... (Updated July 2013, BS)
The Co-Pilot software detects if your virtual machine is in an unrecoverable state (due to unexpected errors, lost of connectivity, etc.), and reboots/resets it to start the execution of new experiments again. This will not affect at all your work unit or BOINC credit. However, it should only happen very rarely - if it is frequent you almost certainly have a network connectivity problem.
Fri, 08/05/2011 - 12:16 — Daniel Lombraña... (Updated July 2013, BS)
The new VBoxWrapper does not support more than 1 core currently.
(In any case, due to the limited use of multi-threading for the current application, only about 1 and a half cores can be utilized in practice).
Our older CernVM Wrapper does support multi-core systems. However, we only used at most two cores, because the current experiments will not benefit at all from 3 or more cores. Thanks to this, your BOINC client will be able to run other projects in the free and available cores of your computer.