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To access IRIS/ DiRAC infrastructure, hosted at Cambridge, you need to complete two steps:

1. (If you don’t already have one) you need a DiRAC SAFE account.

   1. To register with SAFE you need to fill in the web form here: https://safe.epcc.ed.ac.uk/dirac/

   2. There is am email-verification step required to complete registration

2. You need to request a login account for the DiRAC Cambridge system, via the SAFE web interface, and have your login account associated to the LSST:UK project award on DiRAC. Specify the following values, when asked:

   1. Project code: ip005

   2. IP range: 131.111.0.0/16

Further useful instructions are available from DiRAC:

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IRIS Grid Infrastructure

Skeleton instructions to be expanded.

To be documenteduse the IRIS grid infrastructure resources that have been allocated to the project, you first need to obtain an X.509 grid certificate (e.g., if you are a UK academic, you can obtain a certificate by following the instructions at https://ca.grid-support.ac.uk/), which you will use to authenticate with UK (and other) grid computing resources.

N.B. Obtaining a Grid certificate is a relatively complicated process, which will likely take several weeks to complete. If you are not already familiar with handling X.509, you should read your preferred Certificate Authority’s guidance carefully to ensure a smooth application process.

Having obtained your X.509 certificate, you need to request to join the LSST Virtual Organisation (VO). You do this by visiting the VO’s management site at https://voms.slac.stanford.edu:8443/voms/lsst/user/home.action, though you first need to import your certificate into your web browser.

You should be taken to the registration page, from which you can request to join the LSST VO. Again, it may take several days for your registration request to be processed.

Once you have your X.509 certificate registered for the LSST VO, you can begin to experiment with some of the basic grid tools to gain experience of grid computing.

Information about basic tools

IRIS Cloud Infrastructure

To be documented

LSST:UK Awards on IRIS

Document History

??/??/??? – Initial version developed by Richard McMahon

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