OLCF Events


May 21 2019 - May 23 2019


08:00 AM - 06:00 PM


ORNL, Oak Ridge, TN


Ashley Barker
(865) 574-1841

2019 OLCF User Meeting

2019 OLCF User Meeting Group

(You can download the group photo here.)

2019 OLCF User Meeting
Oak Ridge National Laboratory
Building 5200, TN Rooms A,B,C
May 21-23, 2019
8:00 AM – 6:00 PM (ET)

The Oak Ridge Leadership Computing Facility (OLCF) is pleased to announce the 2019 OLCF User Meeting will be held May 21-23 at Oak Ridge National Laboratory in Oak Ridge, TN. The purpose of the annual user meeting is to share selected computational science and engineering achievements emerging from the OLCF’s user programs, to enable direct interactions among users, to advance the OLCF’s relationships with our user community, and to highlight computational requirements for the future.

The 2019 meeting will feature talks from OLCF users and application developers, giving our users the opportunity to share their scientific accomplishments and state-of-the art computational development methods on both Titan and Summit. The meeting will also feature plenary talks, panels, and center updates from OLCF staff.

Prior to the official start of the User Meeting (which begins on Tuesday), the OLCF will offer a separate training opportunity on Monday for those interested (see below).

Poster Session
We invite you to participate in an OLCF poster session and share your project’s achievements to date.

Attendees will be offered a tour of the Oak Ridge Leadership Computing Facility, including stops at the observation areas to see Titan, Summit, and EVEREST (the OLCF scientific analysis and visualization laboratory).

OUG Elections
Elections will be held during the OLCF User Meeting for the open spots on the OLCF Executive Board User Group. More information about elections will be forthcoming.

Attending via Webinar
For participants who cannot attend on-site, a BlueJeans videoconference link will be set up for remote participation.

(Optional) Training Opportunity
On Monday, May 20 (before the official start of the User Meeting), the OLCF will offer a separate all-day Introduction to Summit workshop. If you would like to arrive a day early to attend this training event, please register separately using the provided link.

Title Speaker Links
Gordon Bell Series – Invited Talk #1
Exascale Deep Learning
Mr. Prabhat
Data and Analytics Group Lead, NERSC
slides video
Gordon Bell Series – Invited Talk #2
CoMet: Enabling Comparative Genomics at Exascale
Wayne Joubert
slides video
Early Summit Results: Invited Talk #1
Enabling portable processing of large-scale numerical tensor algebra workloads with applications in quantum many-body theory on Summit
Dmitry Liakh, PhD
Computational Scientist, OLCF
slides video
Early Summit Results: Invited Talk #2
Marching to Exascale: Extreme-scale cosmological simulations with HACC on Summit
Salman Habib
Argonne National Laboratory
slides video
Early Summit Results: Invited Talk #3
Global Seismic Full Waveform Inversion
Jeroen Tromp
Professor of Geophysics, Princeton University
slides video
Early Summit Results: Invited Talk #4
Opening New Frontiers in Singlet Fission Research
Dr. Remco Havenith
University of Groningen
slides video
Early Summit Results: Invited Talk #5
Recent Lattice QCD Results for Non-zero Baryon Density
Patrick Steinbrecher
Brookhaven National Laboratory
slides video
Federated Facilities: Invited Talk #1
Toward Common Components for Open Workflow Systems: The RADICAL-Cybertools Experience
Shantenu Jha
Dept. Chair, Data Driven Discovery, BNL
Associate Professor, Rutgers University
slides video
Federated Facilities: Invited Talk #2
Exascale IO and in situ Data Processing on Leadership Computers
Scott Klasky
slides video
Federated Facilities: Invited Talk #3
Running Workflows at OLCF with Slate and OpenShift
Jason Kincl
HPC Systems Engineer, High Performance Compute and Data Group
slides video
Updates from the OLCF Facility Staff OLCF Staff slides video
Invited Talk:
Linear Algebra Software Technologies for Exascale
Stan Tomov
Research Assistant Professor, Innovative Computing Laboratory, UTK
slides video
Invited Talk:
Scientific Computing with Quantum Computers
Travis Humble
Director, Quantum Computing Institute, ORNL
slides video
Invited Talk
Neuromorphic Computing: A Complementary Architecture for the Future of Computing
Catherine Schuman
Research Scientist, ORNL
slides video

Registration is now closed.

Remote Participation

Please remember to register even if you are attending remotely.
If you choose to attend remotely, you will be able to view all presentations.

To join the Meeting:

To join via Room System:
1) Dial: or
2) Enter Meeting ID: 603063554 -or- use the pairing code

To join via phone:

1) +1.408.740.7256 (US (San Jose))
+1.888.240.2560 (US Toll Free)
+1.408.317.9253 (US (Primary, San Jose))
(see all numbers:
2) Enter Meeting ID: 603063554
3) Press #

User Meeting Contacts

OLCF Local Organizers:

Valentine Anantharaj,
Ashley Barker,
Katie Bethea,
Marcus Eisenbach,
Judy Hill,
Gustav Jansen,
Stephen McNally,
Matt Norman,
Thomas Papathedore,
Sherry Ray,
Arjun Shankar,
Tjerk Straatsma,
Jack Wells,

Local Arrangements

Bus:  For those staying at any of the hotels in Oak Ridge to ORNL, you can catch the bus at the DoubleTree Hotel or the Staybridge Inn and Suites.  If not staying at either of these hotels, you are welcome to drive there to catch the bus.  Bus will pick up at the hotels at 7:30 – 7:40 a.m.

ORNL Guest House:  You can now make a reservations at the ORNL Guest House.

There are a number of other nice Oak Ridge hotels listed below.

Hotel National Number Local Number
Comfort Inn 800.228.5150 865.481.8200
DoubleTree 800.222.TREE 865.481.2468
Hampton Inn 800.HAMPTON 865.482.7889
Holiday Inn Express & Suites 800.HOLIDAY 865.298.1990
Quality Inn 877.424.6423 865.483.6809
Staybridge Suites 800.225.1237 865.298.0050

Taxi Recommendations:

Please Note: Network Transportation Companies, like Uber, Lyft, and Sidecar are NOT approved to access ORNL or the ORNL Guest House. Taxi companies with logo marked vehicles may enter if they are dropping off or picking up a guest with an approved PAS or valid DOE badge. For pick-up, the driver must have the name of the guest with an approved PAS. The Taxi Services used by our visitors.

Maps and Directions to  ORNL:

Map to ORNL Visitor Center:

Map of Visitor Center  and Parking:


We encourage all OLCF Users to contribute a poster to the 2019 OLCF User Meeting.

Poster Session Details

There will be two poster sessions featured during the 2019 Meeting.  The first will occur late afternoon on Tuesday, May 21st, and the second session will occur late afternoon on Wednesday, May 22nd.

Poster Session Location

Both poster sessions will be held in the ORNL Conference Center lobby.

Poster Slam

Each poster contributor will be given two minutes to introduce your poster in a plenary session.  No slides necessary.  One week before the meeting, you will be notified of the time and date of your poster slam slot and which poster session to which you will be assigned.

How do I submit a poster?

In order to plan accordingly and give us the opportunity to promote your poster, please fill out the information requested below no later than Friday, May 10, 2019.

What size poster should I bring?

Posters should be 30H x 40L.

Will ORNL print my poster?

For your convenience, ORNL will print your poster if received by Friday, May 3, 2019. To have your poster printed by ORNL, send a PDF copy to by the May 3rd deadline.

2019 User Meeting Posters

2019 OLCF User Meeting Poster Session

2019 OLCF User Meeting Poster Session

Poster Number Title Presenter Poster PDF
1 Nonorthogonal Configuration Interaction for the Calculation of Electronic Couplings R.W.A. Havenith
2 GronOR: GNOME at warp speed T. P. Straatsma
3 Diagnosing deep-learner digital surface model evaluators using an evolutionary algorithm on Summit Mark Coletti
4 Managing ATLAS Simulation Workloads on Titan with PanDA Sean Wilkinson
5 Multistep Neural Network for Analytic Continuation Xuping Xie
6 Unified memory in HOOMD-blue improves node-level strong scaling Jens Glaser
7 Massively Parallel and GPU-accelerated Implementation of the Cluster Perturbation Method for Excitation Energies Dmytro Bykov
8 Investigation of high entropy alloys with LSMS method Investigation of high entropy alloys with LSMS method Xianglin Liu
9 Toward Support for Longitudinal Studies of Application Characterization and Performance with SW-CAP Philip C. Roth
10 Multitasking neural networks for first-principles based statistical mechanics of alloys and magnetic systems Massimiliano Lupo Pasini
11 Accelerated Computing with GenASiS Reuben D. Budiardja
12 Scaling Iterative Random Forest for Use on Distributed High-Performance Compute Resources Ashley Cliff
13 Accessing OLCF Computing Resources using Pegasus WMS George Papadimitriou
14 Incorporating Proteins into Geometrically Complex, Cell-Scale Membrane Models for Molecular Dynamics Simulations Noah Trebesch
15 An asynchronous GPU algorithm for extreme scale fourier pseudo-spectral simulation of turbulence Kiran Ravikumar
16 Unprecedented scales with ECMWF’s medium-range weather prediction model Nils Wedi