In This Message

Center Announcements
– Nominations for OLCF User Group Executive Board
– Applications Open for the 2023 BSSw Fellowship Program

Meetings & Workshops
– NERSC HPE/Cray Perftools & Reveal Training (September 22)
– September 2022 OLCF User Conference call (September 28)
– Data Visualization & Analytics Series: VisIt at OLCF(October 13)
– OLCF  Annual User Meeting (October 18-19)
– NERSC GPU Hackathon (November 30, December 6-8)

Upcoming Downtimes
– No scheduled outages through September 30th

Center Announcements

Nominations for OLCF User Group Executive Board

Nominate yourself to run for the OLCF User Group Executive Board. If elected, you will serve on a 10-person board that provides advice and feedback to the OLCF on the current and future state of OLCF operations and services. The term of service for the successful candidates is three years. Elections will be held electronically during the user meeting. The nomination will take place through September 30. You may nominate yourself at

Applications Open for the 2023 BSSw Fellowship Program 

Applications are now being accepted for the 2023 BSSw Fellowship Program through September 30, 2022. Details of the program can be found at and in a new blog post. The BSSw Fellowship Program provides recognition and funding for leaders and advocates of high-quality scientific software who foster practices, processes, and tools to improve scientific software productivity and sustainability. Each 2023 BSSw Fellow will receive up to $25,000 for an activity that promotes better scientific software. Activities can include organizing a workshop, preparing a tutorial, or creating content to engage the scientific software community. Please subscribe to the mailing list ( for teleconference details and other updates on the program.

Meetings & Workshops

NERSC HPE/Cray Perftools & Reveal Training 
September 22, 2022

NERSC will host a two-hour training event on HPE’s Perftools and Reveal tools on September 22, 2022. HPE’s Perftools (performance Measurement and Analysis Tools) and Reveal are provided on HPE systems such as NERSC’s Perlmutter, ALCF’s Polaris, and OLCF’s Frontier to collect CPU and GPU performance. HPE Senior Distinguished Technologist John Levesque will illustrate how to take an all-MPI application and first use Perftools to identify which parts of the applications should run on the GPU, and then how to use Reveal to aid in adding OpenMP Offload directives to the original application. The talk will continue with showing how to gather runtime statistics and improve the performance of the applications. The event will be presented online using Zoom.

For more information and to register, please see

September 2022 OLCF User Conference call
September 28, 2022

The September OLCF User Conference Call will be held from noon until 1:00 PM Eastern Time on Wednesday, September 28. During this call, ORNL’s William Godoy, Pedro Valero-Lara, and Philip Fackler will provide a brief introduction to the Julia programming language for high performance computing, specifically at OLCF. They will present how to get started with Julia from some of their early experiences running CPU and GPU code on OLCF systems. For more information, see the event page at

Data Visualization & Analytics Series: VisIt at OLCF
October 13, 1:00 – 3:00 pm EDT

VisIt is an interactive, parallel analysis and visualization tool for scientific data. Users can visualize data interactively or offload visualization using a Python script to analyze data ranging in scale from small projects to large leadership-class computing simulations. This beginner friendly demo will provide an overview of how to access VisIt at OLCF and a tutorial of how to use VisIt to visualize different datasets on Andes.

Only users with moderate security enclave projects (i.e. able to access Summit/Andes) can access the tutorial datasets already downloaded on our filesystem. However, others are welcome to sign up, attend the presentation, and encouraged to download the public datasets for themselves. Additionally, all examples and datasets will continue to be available after the event for Moderate users to access and work with on their own. For more information or to register, see

OLCF Annual User Meeting
October 18-19
The OLCF will hold its annual User Meeting remotely from October 18-19. The purpose of the user meeting is to share selected computational science and engineering achievements emerging from the OLCF’s user programs, to enable interactions among users, to advance the OLCF’s relationships with our user community, and to highlight computational requirements for the future. The 2022 meeting will feature OLCF Facility updates, user-experience talks on Frontier early hardware, deep dive discussions with OLCF staff, and OLCF executive board election results.  For more information or to register, see

NERSC GPU Hackathon 
November 30, December 6 – 8

NERSC, in conjunction with NVIDIA and OLCF, will be hosting a GPU Hackathon from Dec 6th-8th with an opening day on Nov 30th as part of the annual GPU Hackathon Series. This year, the hackathon will be virtual and selected code teams will be able to test and develop on Perlmutter, and there is also the option to use an ARM system. Hackathons combine teams of developers with mentors to either prepare their own application(s) to run on GPUs or optimize their application(s) that currently run on GPUs. This virtual event consists of a kick-off day, where hackers and mentors video-conference to meet and develop their list of hackathon goals, as well as get set up on the relevant systems. This is followed by a one week preparation period before the 3-day intensive primary event
Please note the deadline to submit a proposal is 11:59 PM Pacific, Sep 27th, 2021. So apply now!

Upcoming Downtimes

–  No scheduled outages through September 30th