The LIGO Data Grid¶
The LIGO Data Grid (LDG) is a coordinated set of distributed computing centres operated by LIGO member groups as a subset of the IGWN Computing Grid. These computing centres share authentication infrastructure, among other things, to present a similar user experience across locations.
|LDAS@CIT||Pasadena, CA, USA|
|LDAS@LHO||LIGO-Hanford, WA, USA|
|LDAS@LLO||LIGO-Livingston, LA, USA|
|Nemo||University of Wisconsin-Milwaukee, WI, USA|
Request an account¶
To request an account on the LIGO Data Grid, please complete the form at
Access to computing centres¶
This page describes how to gain access to the IGWN shared computing centres.
Make sure you have an account
User accounts are not automatically created for all collaboration members on all computing centres, please see the specific instructions for the relevant computing centre (find a link in the left menu) to request an account.
Managing your LIGO Data Grid account
Users can manage their LIGO Data Grid account settings at
including ssh keys (more information below), X.509 identities, and login shell.
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 and password
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
gsissh, an 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
This section is incomplete, we welcome contributions to complete this.