All DIFA staff members have the right to access the OPH computing cluster. However, the access must be explicitly requested in order to obtain a valid account.

More specifically, DIFA staff members should direct an access request email to the computing responsible of their research sector:

applicata

Claudia Sala claudia.sala3@unibo.it

astro

Marco Baldi marco.baldi5@unibo.it

atmos

Paolo Ruggieri paolo.ruggieri2@unibo.it

didattica

Olivia Levrini olivia.levrini2@unibo.it

materia

Cesare Franchini cesare.franchini2@unibo.it

nucleare

Lorenzo Rinaldi lorenzo.rinaldi@unibo.it

teorica

Pierbiagio Pieri pierbiagio.pieri@unibo.it

terra

Filippo Zaniboni filippo.zaniboni@unibo.it

esterni (INFN)

Daniele Cesini daniele.cesini3@unibo.it

For students the request must be submitted by their thesis supervisor. For external users (i.e. non-DIFA staff members) the request must be submitted by a DIFA-staff reference person.

Valid UniBo credentials are in any case necessary to obtain an account and to be able to access the cluster (for external users temporary credentials must be obtained first).

New users will be able to access the cluster after 7.00am of the day after the one they have been added to the access group. The home folder of every new user is automatically created at the time of the first access to the cluster.

Individual accounts remain valid until termination of the conditions granting access rights to the cluster (as e.g. until termination of DIFA affiliation, end of the Master/Phd thesis, end of the research collaboration for external users) and the computing responsibles of each sector have the duty to remove users from the respective access groups upon expiration of such access rights.

In any case, the home folders and all the stored data of inactive users will be automatically deleted after 6 months from their last modification time without any further notice.

The cluster can be accessed remotely through a Frontend Login node, through the ssh secure connection protocol, using UniBo institutional credentials (i.e. username and password used for all UniBo IT services).

There are two independent Frontend Login Nodes, with static IP address 137.204.50.71 (ophfe1) and 137.204.50.177 (ophfe2), respectively. The connection procedure is slightly different for staff members (i.e. users having a UniBo email address ending with @unibo.it) and for students (i.e. users having a UniBo email address ending with @studio.unibo.it). In particular: * STAFF MEMBERS with e.g. UniBo email address donald.duck7@unibo.it can connect to the cluster with the command:

followed by their UniBo institutional password * STUDENTS** with e.g. UniBo email address mickey.mouse4@studio.unibo.it can connect to the cluster with the command:

or with the command:

followed by their UniBo institutional password.

Graphic windows require a connection with X11 forwarding, which can be established with the ssh options -X and/or -Y. In general, connecting with:

ensures X11 forwarding.