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LDAS @ LIGO-Hanford

Key information
Home page
Account sign-up See Requesting an account on the LDG page
Support ldas_admin_lho@ligo.caltech.edu

This service is available for all @LIGO.ORG registered collaboration members with accounts and access coordinated as part of the LIGO Data Grid.

Login hosts

Hostname Description Memory CPU model # core GPU
ldas-grid.ligo-wa.caltech.edu Production submit 64GB 2x2.4GHz Xeon E5-2630v3 16
ldas-osg.ligo-wa.caltech.edu OSG submit machine 64GB 2x2.4GHz Xeon E5-2630v3 16
ldas-pcdev1.ligo-wa.caltech.edu Large mem/post-processing 128GB 2x2.4GHz Xeon E5-2630v3 16
ldas-pcdev2.ligo-wa.caltech.edu Large mem/post-processing 512GB 4 x 2.7GHz Xeon E5-4650 32 4 x Tesla K10 + 2 x GTX750
ldas-pcdev5.ligo-wa.caltech.edu 512GB 2x2.2GHz Xeon E5-2698v4 40
ldas-pcdev6.ligo-wa.caltech.edu 1.5TB 4x3.0GHz Xeon Gold 6154 72
dgx1.ligo-wa.caltech.edu 512GB 2 x 2.2GHz Xeon E5-2698v4 40 8 x Tesla V100-SXM2-16GB
detchar.ligo-wa.caltech.edu Dedicated DetChar 128GB 2x2.4GHz Xeon E5-2630v3 16

For details on how to connect to these machines, please see Access to the LIGO Data Grid.

Additional services

Service URL
JupyterLab https://jupyter.ligo-wa.caltech.edu
User webspace https://ldas-jobs.ligo-wa.caltech.edu/~USER/

Configuring your user environment on LDAS

This page describes the default user environments on LDAS, and how to customise availability and versions of the following software distributions:

Intel oneAPI

The Intel oneAPI Base Toolkit is available by default on LDAS, with the exception of the intelpython and mpi modules.

Disabling all Intel modules

To disable loading of all Intel oneAPI modules, create an empty file in your home directory called ~/.nointel:

touch ~/.nointel

Customising the included oneAPI modules

To take full control over which modules to include/exclude (including pinning specific versions) please create ~/.oneapi_config.txt that takes precedence over the default /opt/intel/oneapi/oneapi_config.txt

MATLAB

Enabling MATLAB

MATLAB is available on the command path by default, and can be discovered using which:

$ which matlab
/ldcg/matlab_r2015a/bin/matlab

Note

The default matlab version will be updated from time-to-time according to approval from the Software Change Control Board.

Enabling a specific version of MATLAB

To select a specific version of MATLAB, create a file in your ${HOME} directory named .usematlab_{release}, where {release} is the release number of MATLAB that you want, e.g:

touch ~/.usematlab_r2019a

Listing available MATLAB releases

To list the available MATLAB releases, just run this:

ls /ldcg/ | grep matlab

Disabling MATLAB

Disabling MATLAB

To opt out of all MATLAB releases, create a file in your ${HOME} directory named .nomatlab:

touch ~/.nomatlab

Warning

~/.nomatlab takes precedence over any ~/.usematlab_* files, so if you want to opt in after previously opting out, make sure and remove the old ~/.nomatlab file.