ENEA-GRID Primer

This page contains a short introduction to the use of ENEA-GRID resources.

ENEA-GRID is the infrastructure providing the access to the computational resources of ENEA-INFO Service (Servizio Centralizzato Informatica e Reti)

More information about ENEA-GRID can be found at the page http://www.afs.enea.it/project/eneagrid.

Here only some basic information are provided:

How to connect to ENEA-GRID (Unix Servers) ?

The connection to ENEA-GRID can be established in two ways

Using ICA Citrix Client to connect to one of the ENEA-GRID Citrix Servers:

Download the Citrix Presentation Server Client for the desired platform: Client Download Page via Google
Choose: Citrix Clients--> in list of clients, choose XenApp Plugin (new name for Client)--> “XenApp Plugin for Hosted Apps.msi”;

Install the client and configure it. see procedure for installation here.
The configuration requires to select:

the "Network Protocol" , select "TCP/IP"
the name of the Citrix Server. Provide one out the following list:
sp5-1.frascati.enea.it pace.bologna.enea.it dafne.casaccia.enea.it triafs.trisaia.enea.it ostro.portici.enea.it ercules.brindisi.enea.it	Tutorial: :Citrix Configuration
the "Published Application": INFOGRID	Tutorial: Basic Access

A more extended description of the installation can be found at the Telegrid project page.
A detailed list of softwares available can be found here ;

Using SSH to one of the ENEA-GRID front-end machines: for example sp5-1.frascati.enea.it

SSH client availability:

ssh is available from every UNIX/Linux client
Windows ssh clients are included in commercial packages as Exceed. Free Windows client are also available on the Web:

The PUTTY suite at the putty download Page which includes a GUI ssh client and the line command utilities psftp, pscp.
GUI clients for sftp and scp are also available:

After the connection it is advised to change the password that has been provided at the moment of the account creation!

The changement of the password is performed using command kpasswd userid from a terminal window.

22/2/2007
Due to the migration to Kerberos5 authentication, the password can be changed issuing the command kpasswd only in a session on front end hosts:

sp4-1.frascati.enea.it
lin4p.frascati.enea.it
bw305-1.frascati.enea.it, bw305-2.frascati.enea.it.

The kpasswd command to change the password for the user userid is: kpasswd userid ( userid must be provided)

How to connect to ENEA GRID (Windows Servers)?

NOTE: it needs to have an AFS valid user login. details

The connection can be established in three ways:

Using WEB-INTERFACE to one of the front-end machines
- NOTES
  - Need to install the ICA Web Client from Download Page via Google ;
  - Choose: Citrix Clients--> in list of clients, choose XenApp Plugin (new name for Client)--> “XenApp Web Plugin .msi;
  - Install the executable file, leaving default settings, exception only to Citrix Neighborhood Agent configuration. More details on this procedure here.
  - Each of the web interface in different ENEA sites offers different softwares streaming;
  - More detailed informations are available here: Offerta Windows

Using ICA Citrix Client to connect to one of the ENEA-GRID Citrix Servers:

Download the Citrix Presentation Server Client for the desired platform: Client Download Page via Google
Choose: Citrix Clients--> in list of clients, choose XenApp Plugin (new name for Client)--> “XenApp Plugin for Hosted Apps.msi”;

Install the client and configure it. The configuration requires to select

the "Network Protocol" , select "TCP/IP"
the name of the Citrix Server. Provide one out the following list:
cresco-win1.portici.enea.it winfarm.trisaia.enea.it winfarm.frascati.enea.it winfarm.brindisi.enea.it	Campus Tutorials Tutorial:Citrix Configuration
the "Published Application": choose by end-user in the list of available	List of software

Using ACCESS GATEWAY to server: Portici http://wincres.portici.enea.it/citrixlogonpoint/portici

NOTES

Need to install the ICA Web Client from Download Page via Google;
Each of the web interface in different ENEA sites offers different softwares streaming;

To change AFS PASSWORD user can access trough this page ENEA_GRID Password Changer

File space and user HOME directory

All users on all ENEA-GRID machines share the same file space which is based on the AFS/OpenAFS distributed file system.

User HOME directory is /afs/enea.it/user/site/userid.

The same directory is also available at /afs/enea.it/user/first_userid_character/userid.

The default structure of the user HOME contains the following directories:

~/private - the directory is readable only for the user
~/public - the directory is readable by any user
~/public_html - the directory is readable by any user and its content is published on the web at the address: http://www.afs.enea.it/userid
~/rem - the directory contains the mount points for volumes remote sites; a request for AFS volumes on remote sites must be done to the AFS administrators
~/PFS - the directory contains the links to the available Parallel File Systems. Information about Parallel File System can be found at: Parallel File systems in ENEA-GRID

The accessibility of the AFS file space is controlled by AFS ACL (Access Control List).

The Access Control List of a directory can be displayed by the command:

fs la path_of_the_directory (fs help provides all the information about fs command )

Informations about OpenAFS can be found at the AFS page for ENEA-GRID

How to submit a job to ENEA-GRID

LSF Multicluster is the job and resources management system in ENEA-GRID.

The most common user commands (man pages are available): bsub, bjobs, lsload, lshosts, bhosts
A list of all available system can be obtained with the command: lshosts
A list of all available queues can be obtained with the command: bqueues

Informations about LSF can be found at the LSF page for ENEA-GRID

Information about compilation & run for serial and parallel jobs: Working with ENEA-GRID

Support and Information Tools

User support can be required at the E-mail address gridhelp@enea.it

All the ENEA-GRID users are subscribed to the mailing list griduser@enea.it.
The mailing list is used by ENEA-GRID administrators to contact the users, but it can be also used for discussion of general issues concerning ENEA-GRID infrastructure.

User support can be required at the E-mail address gridhelp@enea.it

All the ENEA-GRID users are subscribed to the mailing list griduser@enea.it.
The mailing list is used by ENEA-GRID administrators to contact the users, but it can be also used for discussion of general issues concerning ENEA-GRID infrastructure.

2007/03/29 ENEA-GRID HOME Page