Computational Cluster Programs

Data Storage on the Neutrino Cluster

Your Home Directory

The Neutrino Cluster has its own file server. All user home directories are located there.

Your home directory is:

/u/home4/loginid

where loginid is your Neutrino Cluster login id.

You can get to you home directory by entering the command:

cd

There is currently no quota on the home directories.

All home directories are incrementally backed up nightly. In case of catastrophic failure on the file server, all data in home directories will be restored to the way they were when the last backup was taken.

The purpose of the backup is not to be able to restore individual files that you accidentally loose. These are the measures that you can take to protect your files from accidental loss.

File Systems for Temporary Use

/work

Each head node and compute node has a local scratch file system named /work. There is a different /work on each node.

• To place files in /work, make a directory there named with your login id and place the files in it.
• In particular, it's good to use the /work file systems for scratch files (life of the program), and high activity files to avoid the overhead and network traffic associated with the network file systems.
• Once a day, files in /work that have not be used in the last 24 hours are deleted.