Body
Here are the memory and disk requirements for running a single task of an application.
Sixtrack
Requires 512MB of RAM and 1GB of free hard disk space.
Theory
Requires 630MB of RAM and 3GB of free hard disk space ( 0.8GB uncompressed disk image size ) plus ~1GB of RAM overhead for the host operating system.
ATLAS
Requires 1.4GB of RAM and 4GB of free hard disk space ( 2.2GB uncompressed disk image size ) plus ~1GB of RAM overhead for the host operating system.
CMS
Requires 2GB of RAM and 4GB of free hard disk space ( 1.7GB uncompressed disk image size ) plus ~1GB of RAM overhead for the host operating system.
LHCb
Requires 2GB of RAM and 8GB of free hard disk space ( 3.9GB uncompressed disk image size ) plus ~1GB of RAM overhead for the host operating system.
Detailed question
What is the specification for each application?