EasyGrid: a Grid Job submission system for High Energy Physics analysis.

James Werner

Requirements to use grid: paperwork and certificates.

Grid allows users submit jobs in sites everywhere in the world, and use an imense resource to do their research. Hence, security is a main concern in grid world. You will need to follow this procedure to have access to grid.

To use grid and babar software you will need an account on any machine with access to AFS at hep.man.ac.uk, 
accounts at SLAC and RAL.

Getting account at SLAC
Requesting an user certificate:
Use firefox to request certificates:
firefox
-Go to https://ca.grid-support.ac.uk
-accept the certificate permanently (or you will not be able to recover the host certificate)
-Request a certificate
-User certificate
You will receive an email when the certificate is ready.
Getting the certificate
-Go to https://ca.grid-support.ac.uk
Select Import certificate into browser.
Type the serial number available from the email from CA.
Saving the certificate in the wright place:
At firefox select:  Edit/Preferences/Advanced/Certificates/manage certificates
Mark the certificate you want to save.
Backup
openssl pkcs12 -in username.p12 -clcerts -nokeys -out usercert.pem 
openssl pkcs12 -in username.p12 -nodes -nocerts -out userkey.pem 
Create a directory .globus in your home directory and copy both pem files:
cd
mkdir .globus
cp path/usercert.pem .globus
cp path/userkey.pem .globus
cd .globus
chmod 400 userkey.pem
chmod 444 usercert.pem
A detailed information can be found at Register with BaBar Grid
Register at CERN.
Babar VOMS register:
The new BaBar VOMS server is now ready to accept requests for
registration. Current BaBar VO members should start registering so that
the will be able to start using it when BaBar Grid services get
upgraded.

Please go to https://voms.gridpp.ac.uk:8443/voms/babar/ with your Grid
certificate loaded into your browser and follow the New User
Registration link on the left hand side. You will then be presented with
a short form to fill in and sign with your certificate. The VO usage
rules you are accepting are the EGEE/LCG Acceptable Use Policy
(https://edms.cern.ch/file/428036/3/Grid_AUP.pdf) which you should
already have signed when you joined the VO originally. You will then
have to go through the usual e-mail address confirmation loop and
Elenora Luppi or I should then get a message and we can approve you if
you are still part of BaBar.