In This Message

Center Announcements
  – ALCC Call for Proposals
  – Software Changes on Andes

Meetings & Workshops
  – OLCF User Conference Call (Dec 8)
  – Vampir/Score-P Training (Jan 19-20)

Upcoming Scheduled Outages
  – Andes (Dec 1)
  – Summit, Andes, DTNs, Spock, Alpine (Dec 14)

Center Announcements

ALCC Call for Proposals
The DOE Office of Advanced Scientific Computing Research (ASCR) is now accepting application proposals for the 2022-23 allocation year of the ASCR Leadership Computing Challenge (ALCC) program. The program provides access to computational resources at ASCR’s three supercomputing facilities (OLCF, ALCF, and NERSC).

The proposal process consists of two steps, with a pre-proposal due on December 17, 2021 and the full proposal due on February 22, 2022. The allocation period for successful proposals will run from July 1, 2022-June 30, 2023.

For more information, see the announcement at

Software Changes on Andes
Andes is currently unavailable for a minor OS upgrade. In addition to the OS change, new versions of the Mellanox InfiniBand Driver, NVIDIA Driver, and Slurm are being installed. While recompiling is not required, it is recommended. A summary of the changes is available at

Meetings & Workshops

OLCF User Conference Call (Dec 8)
The final call for the year will be held at noon (Eastern Time) on Wednesday, December 8. The December call will include a discussion on analysis tools at OLCF led by Benjamin Hernandez. For more information on that call, see

Vampir/Score-P Training (Jan 19-20)
OLCF will host a Vampir and Score-P training on January 19-20 from 9:00 am-11:30 EST each day. Vampir is an established performance tool for visualizing and analyzing the behavior of highly parallel HPC applications. It is supported by the Score-P tool, which can be used to fully record the runtime behavior of HPC applications. The first day will feature lessons and hands-on demos using these tools. The second day will give users an opportunity to bring their own codes and instrument them for performance analysis with help from Score-P and Vampir developers.

For the detailed agenda and registration please see

Upcoming Scheduled Outages

  • Andes is currently unavailable and is expected to return to service by 11:59 PM today (Wednesday, December 1).
  • Summit, Andes, Spock, the Data Transfer Nodes, and the Alpine filesystem will be unavailable from 8:00 AM until 11:59 PM on Tuesday, December 14.