prace.md

PRACE User Support

Intro

PRACE users coming to Anselm as to TIER-1 system offered through the DECI calls are in general treated as standard users and so most of the general documentation applies to them as well. This section shows the main differences for quicker orientation, but often uses references to the original documentation. PRACE users who don't undergo the full procedure (including signing the IT4I AuP on top of the PRACE AuP) will not have a password and thus access to some services intended for regular users. This can lower their comfort, but otherwise they should be able to use the TIER-1 system as intended. Please see the Obtaining Login Credentials section, if the same level of access is required.

All general PRACE User Documentation should be read before continuing reading the local documentation here.

Help and Support

If you have any troubles, need information, request support or want to install additional software, please use PRACE Helpdesk.

Information about the local services are provided in the introduction of general user documentation. Please keep in mind, that standard PRACE accounts don't have a password to access the web interface of the local (IT4Innovations) request tracker and thus a new ticket should be created by sending an e-mail to support[at]it4i.cz.

Obtaining Login Credentials

In general PRACE users already have a PRACE account setup through their HOMESITE (institution from their country) as a result of rewarded PRACE project proposal. This includes signed PRACE AuP, generated and registered certificates, etc.

If there's a special need a PRACE user can get a standard (local) account at IT4Innovations. To get an account on the Anselm cluster, the user needs to obtain the login credentials. The procedure is the same as for general users of the cluster, so please see the corresponding section of the general documentation here.

Accessing the cluster

Access with GSI-SSH

For all PRACE users the method for interactive access (login) and data transfer based on grid services from Globus Toolkit (GSI SSH and GridFTP) is supported.

The user will need a valid certificate and to be present in the PRACE LDAP (please contact your HOME SITE or the primary investigator of your project for LDAP account creation).

Most of the information needed by PRACE users accessing the Anselm TIER-1 system can be found here:

• General user's FAQ
• Certificates FAQ
• Interactive access using GSISSH
• Data transfer with GridFTP
• Data transfer with gtransfer

Before you start to use any of the services don't forget to create a proxy certificate from your certificate:

    $ grid-proxy-init

To check whether your proxy certificate is still valid (by default it's valid 12 hours), use:

    $ grid-proxy-info