In This Message

Did You Know?

Meetings & Workshops
  – OLCF User Conference Call

Upcoming Scheduled Outages
  – Data Transfer Nodes (Feb 8)
  – Summit, Andes, DTNs, Spock, Alpine (Feb 15)

Did You Know

Filesystem Purge
In order to ensure available space for all active workloads, the temporary scratch filesystems are purged daily removing files that have not been accessed or modified in the last 90 days (specifically, the file’s atime and mtime attributes). Operations such as reading or writing to a file update these timestamps, other operations such as “ls” do not. You can check a file’s atime and mtime with the “stat” command. Since the temporary scratch filesystems are not automatically backed up, it is good practice to back up needed files to the center’s HPSS and/or to off-site archives.

Meetings & Workshops

OLCF User Conference Call
Thanks for joining us for the January OLCF User Conference Call, which featured an overview of HPSS from OLCF’s Gregg Gawinski. If you would like to review the call video/slides, you can find links for both in our Training Archive and on the concall event page.

Upcoming Scheduled Outages

  • The Data Transfer Nodes will be unavailable from 8:00 AM until 5:00 PM on Tuesday, February 8. This outage will affect direct logins to dtn.ccs.ornl.gov, hsi commands from Summit and Andes login nodes, and Globus transfers using the “OLCF HPSS” endpoint.
  • Summit, Andes, the Data Transfer Nodes (DTNs), Spock, and the Alpine Filesystem will be unavailable from 8:00 AM until 11:59 PM on Tuesday, February 15.