Sds-hd hpc access

1 Access to SDS@hd

SDS@hd ScientificDataStorage © University Heidelberg

It is possible to access your storage space on SDS@hd directly on the bwforCluster MLS&WISO. You can access your SDS@hd directory with a valid Kerberos ticket on all compute nodes except standard nodes. Kerberos tickets are obtained and prolongated on the data mover nodes data1 and data2. Before a Kerberos ticket expires, notification is sent by e-mail.

1.1 Direct access in compute jobs

• Login in to a datamover, i.e. "ssh data1" or "ssh data2" (passwordless)
• Fetch a Kerberos ticket with command: kinit (use your SDS@hd service password)
• Prepare your jobscript to use the directory /mnt/sds-hd/<your-sv-acronym>
• submit your job

1.2 Copying data on data mover node

Certain workflows or I/O patterns may require the transfer of data from SDS@hd to a workspace on the cluster before submitting jobs. Data transfers are possible on the data mover nodes data1 and data2:

• Login to a data mover node with command: "ssh data1" or "ssh data2" (passwordless)
• Fetch a Kerberos ticket with command: kinit (use your SDS@hd service password)
• Find your SDS@hd directory in /mnt/sds-hd/
• Copy data between your SDS@hd directory and your workspaces
• Destroy your Kerberos ticket with command: kdestroy
• Logout from data1 for further work on the cluster

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