Access to computing resources and services¶
Fundamental to working with or using shared IGWN computing or data is having the authorisation to do so, and being able to authenticate against the various services that provide tools for you to use.
The remainder of this document presumes that you have a collaboration account (commonly referred to as LIGO.ORG for LIGO/LSC members). If you don't have collaboration account, please contact your group's Principal Investigator for assistance.
Accounts on the grid computing centres¶
See IGWN Computing Grid centres for details on what computing centres are available, and how to sign up for an account.
Logging-in to the computing centres¶
Access to the LIGO Data Grid¶
LIGO.ORG account holders can access the LIGO Data Grid in a few different ways:
- Indirectly with
- Directly with
sshdirectly using an SSH key
- Directly with
The SSH portal
ssh.ligo.org can be accessed using a LIGO.ORG username
Upon login, users will be presented with an interactive menu from which to choose the host to be connected to.
ssh.ligo.org login menu
::: LIGO Data Grid Login Menu ::: Select from these LDG sites: 0. Logout 1. AEI - Albert Einstein Institue, Hannover (Germany) 2. CIT - California Institute of Technology, Pasadena, CA (USA) 3. LHO - LIGO Hanford Observatory - Hanford, WA (USA) 4. LLO - LIGO Livingston Observatory - Livingston, LA (USA) 5. UWM - Center for Gravitation, Cosmology & Astrophysics (Milwaukee, WI, USA) 6. IUCAA - Inter-University Centre for Astronomy & Astrophysics, Pune (India) 7. CDF - Cardiff University, Cardiff (UK) [Registered Users Only] ------------------------------------------------------------- Z. Specify alternative user account Enter selection from the list above:
Direct SSH access with an SSH key¶
LIGO.ORG account holders can manage SSH keys for use in accessing the LIGO Data Grid at https://grouper.ligo.org/ldg/manage_ssh/.
Direct access with GSISSH¶
LIGO.ORG account holders can connect to LDG hosts using
extensions of SSH that uses a pre-created credential.
Install the LDG-Client
In order to connect to the LDG clusters, the client tools that enable authentication (and authorisation) need to be installed. Installation instructions, for various supported platforms, can be found here.
With the LDG-Client software installed, users can create a personal X.509 grid proxy via:
albert.einstein with your LIGO.ORG username.
and can then continue to access an LDG host using
Access to other computing centres¶
Work in progress.