Computing Environment For The OPAL Experiment At LEP

The software and the computing environment of the OPAL experiment have been preserved as a Virtual Appliance (OVA). The Virtual Appliance is based on the CERN Virtual Machine and Scientific Linux 6 on an x86_64 architecture. The Virtual Appliance may easily be imported into VirtualBox for user consumption. Before importing the OVA please setup a "host-only" network interface, the virtual appliance uses it to provide an IP address (displayed in the console once the VM is ready for login) you may use to connect to the virtual machine. If you don't have a host-only network setup you will see an error message prompting you to set up a host-only network when the VM boots.

Once the virtual machine is running the user account "opal" will be available with the password "opal2000". This account has full administrative privileges for the Virtual Machine (use sudo).

Once logged into the Virtual Machine you may access the OPAL software at /cvmfs/opal.cern.ch/. Some examples to get you started are available at /cvmfs/opal.cern.ch/apps/examples/. The data are available at /eos/experiment/opal/ once you have authenticated yourself with `kinit <account>` using your CERN account. The CERN account must be in the OPAL e-group to gain access to the data. Contact information for the OPAL collaboration is available on the CERN greybook.

If you would like to setup in a cloud environment use the opal-user-data with a CernVM from http://cernvm.cern.ch or opal-cloud-config.yaml with a Scientific Linux CERN 6 (SLC6) image from http://linuxsoft.cern.ch as use-data.