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I need to use the local scratch area, may I? How? Is it backupped?

Generally each linux workstation should have a local disk area called /scratch
You can write your data there.

First you have to create a subdirectory in the /scratch/ directory using the following command from a Linux shell:
mkdir /scratch/yourusername
Put your files in /scratch/yourusername directory, not in /scratch

Do not put important files in scratch areas, because if the local disk is damaged, we will not be able to recover its content.
Please note: **local directories** (/scratch /data etc.) __**are never saved**__ ("backupped")!!

You can not access to the local scratch areas from outside SISSA through shannon.sissa.it

For I/O intensive applications (i.e. huge data on input/output files), you are strongly suggested to use the local disk of the machine where your executable is running and not your home directory. Since the latter is accessed by the machine through the network, the reading and writing procedure could slow down terribly and make the performance of your application worse.

vpnimage Please note, there is a NEWS LOL

From the external network you can reach your workstation and so reach its /scratch using the VPN connection.
To use the VPN connection, you have to:

  • install the VPN client on your laptop;
  • ask helpdesk the vpn user group password. Due to security reasons passwords are never sent by e-mail, you can obtain the vpn user group password by phone at helpdesk service or at helpdesk room;
  • ask helpdesk to enable your workstation to accept the vpn connections.
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