First Round of 2015 Hackathons Gets Underway

May 29, 2015

May 29 — What good would a supercomputer be without its applications? As supercomputers inevitably scale to newer, more diversified architectures, so too must their applications.

Building on the lauded success of last year’s 2014 inaugural hackathon, organizers from the Oak Ridge Leadership Computing Facility (OLCF), the University of Illinois Coordinated Science Laboratory and National Center for Supercomputing Applications (NCSA), NVIDIA, and The Portland Group (PGI) gathered in April at NCSA on the university’s Urbana-Champaign campus for the next round of applications acceleration programming.

“The goal of the events is for mentors to help the teams prepare their next-generation applications for the next generation of heterogeneous supercomputers and for the teams to help mentors to gain insights on how to improve their tools and methods,” said Wen-mei Hwu, co-principal investigator for Blue Waters supercomputer.

The event’s approximately 40 attendees were composed of four science teams with important applications—SIMULOCEAN, Nek5000, VWM, and PowerGrid. Also present were mentors: individuals from NVIDIA, PGI, and Mentor Graphics as well as a group led by Hwu from the CUDA Center of Excellence at the University of Illinois. In addition to access to mentors, each team was given accounts on NCSA’s JYC test system and Blue Waters supercomputer; NVIDIA’s internal cluster; and Titan and Chester (a Cray XK7 supercomputer and a single cabinet Cray XK7, respectively) at the OLCF, a US Department of Energy (DOE) Office of Science User Facility at DOE’s Oak Ridge National Laboratory.

Teams spent the first four days learning various methods to port their codes to GPUs. During the midway point of each day, “scrum sessions” allowed programmers to take a break from coding, deliver progress reports, and receive feedback from the mentors and the other teams.

Teams focused primarily on five areas of learning:

  • Programming methods for OpenACC
  • Access procedures for GPU accelerated libraries, or library calls
  • Code profiling techniques
  • Program optimization
  • Data transfer techniques

Having access to five different systems allowed participants to put those methods into practice and to analyze, compare, and contrast alternate methods of compiling to see which methods worked the best and on which systems they were most successful. At the end of the four days, each team came away with significant achievements.

“The summary of the successes of each team is that they now have a path forward,” said OLCF’s event organizer Fernanda Foertter. “Also, they learned OpenACC. In some cases, some of them had little to no experience with it.”

One team in particular made remarkable progress. The team working with PowerGrid—an advanced model for MRI reconstruction—used OpenACC for the first time and was able to solve its problem 70 times faster than it could have solved the problem using a workstation. Team members did so by introducing both GPU and parallel node implementations. In one of their runs, they were able to reconstruct 3,000 brain images with an advanced imaging model in just under 24 hours by using many of the Blue Waters GPU nodes simultaneously—a task that would have taken months without OpenACC.

“In the past we had to approximate our calculations because they were so computationally intensive,” said PowerGrid’s principal investigator Brad Sutton. “In certain situations these approximations have a negative impact on image quality; now we can achieve accurate solutions using OpenACC to maximize image quality and performance.”

PowerGrid team member Alex Cerjanic added, “The connections we made with our mentors and their organizations not only enabled us to reach our goals that week but also connected us to resources that we can use to continue moving our research forward.”

Another contributing factor to each of the teams’ successes was the PGI OpenACC compiler. Taking into account lessons learned from the previous hackathon, the latest compiler release delivers enhanced usability and performance and includes a number of features and fixes implemented as a direct result of feedback from the 2014 event.

On the last day, all four teams delivered presentations to the attendees, detailing their overall experiences and achievements. Foertter presented the final results of the event a week later in Chicago at the 2015 Cray User Group Conference.

The success of the OLCF’s inaugural hackathon last year has resonated well within the HPC community, and by all accounts the NCSA event carried it even further—but it is not going to stop there. April’s event marked the first of three hackathons scheduled in 2015; the next one will take place starting July 10 in Switzerland at the Swiss National Supercomputing Centre (CSCS).

Evidenced in the collaborative endeavors of the OLCF and the NCSA—in addition to the CSCS event right around the corner—hackathons are proving to be a powerful approach that demonstrates the benefits of strengthening relationships between centers with heterogeneous architectures. And undoubtedly those relationships will be even more beneficial in the future as programmers around the world continue to do their part in advancing the mission of science.

“Hackathons are an effective way for science and engineering teams to quickly migrate from traditional serial programming to many-core programming at scale,” said Blue Waters director Bill Kramer. “The intense sessions, with weeklong dedicated efforts by the teams, vendors, and experts, help to quickly enable teams to reengineer their codes for the future, something that could take months or more without hackathons. The progress of these four teams will enable them to do more and better research in the future.”

Source: Jeremy Rumsey, OLCF

Subscribe to HPCwire's Weekly Update!

Be the most informed person in the room! Stay ahead of the tech trends with industy updates delivered to you every week!

Research: A Survey of Numerical Methods Utilizing Mixed Precision Arithmetic

August 5, 2020

Within the past years, hardware vendors have started designing low precision special function units in response to the demand of the machine learning community and their demand for high compute power in low precision for Read more…

By Hartwig Anzt and Jack Dongarra

Implement Photonic Tensor Cores for Machine Learning?

August 5, 2020

Researchers from George Washington University have reported an approach for building photonic tensor cores that leverages phase change photonic memory to implement a neural network (NN). Their novel architecture, reporte Read more…

By John Russell

HPE Keeps Cray Brand Promise, Reveals HPE Cray Supercomputing Line

August 4, 2020

The HPC community, ever-affectionate toward Cray and its eponymous founder, can breathe a (virtual) sigh of relief. The Cray brand will live on, encompassing the pinnacle of HPE's HPC portfolio. After announcing its i Read more…

By Tiffany Trader

Machines, Connections, Data, and Especially People: OAC Acting Director Amy Friedlander Charts Office’s Blueprint for Innovation

August 3, 2020

The path to innovation in cyberinfrastructure (CI) will require continued focus on building HPC systems and secure connections between them, in addition to the increasingly important goals of data best practices and work Read more…

By Ken Chiacchia, Pittsburgh Supercomputing Center/XSEDE

Nvidia Said to Be Close on Arm Deal

August 3, 2020

GPU leader Nvidia Corp. is in talks to buy U.K. chip designer Arm from parent company Softbank, according to several reports over the weekend. If consummated, analysts said the acquisition would cement Nvidia’s stat Read more…

By George Leopold

AWS Solution Channel

AWS announces the release of AWS ParallelCluster 2.8.0

AWS ParallelCluster is a fully supported and maintained open source cluster management tool that makes it easy for scientists, researchers, and IT administrators to deploy and manage High Performance Computing (HPC) clusters in the AWS cloud. Read more…

Intel® HPC + AI Pavilion

Supercomputing the Pandemic: Scientific Community Tackles COVID-19 from Multiple Perspectives

Since their inception, supercomputers have taken on the biggest, most complex, and most data-intensive computing challenges—from confirming Einstein’s theories about gravitational waves to predicting the impacts of climate change. Read more…

Summer Reading: Here’s a Quantum Advantage You Can Bet On!

August 3, 2020

While quantum computing researchers today vigorously chase a demonstration of a quantum advantage – an application which when run on a quantum computer provides sufficient advantage to warrant switching from a classica Read more…

By John Russell

HPE Keeps Cray Brand Promise, Reveals HPE Cray Supercomputing Line

August 4, 2020

The HPC community, ever-affectionate toward Cray and its eponymous founder, can breathe a (virtual) sigh of relief. The Cray brand will live on, encompassing th Read more…

By Tiffany Trader

Machines, Connections, Data, and Especially People: OAC Acting Director Amy Friedlander Charts Office’s Blueprint for Innovation

August 3, 2020

The path to innovation in cyberinfrastructure (CI) will require continued focus on building HPC systems and secure connections between them, in addition to the Read more…

By Ken Chiacchia, Pittsburgh Supercomputing Center/XSEDE

Nvidia Said to Be Close on Arm Deal

August 3, 2020

GPU leader Nvidia Corp. is in talks to buy U.K. chip designer Arm from parent company Softbank, according to several reports over the weekend. If consummated Read more…

By George Leopold

Intel’s 7nm Slip Raises Questions About Ponte Vecchio GPU, Aurora Supercomputer

July 30, 2020

During its second-quarter earnings call, Intel announced a one-year delay of its 7nm process technology, which it says it will create an approximate six-month shift for its CPU product timing relative to prior expectations. The primary issue is a defect mode in the 7nm process that resulted in yield degradation... Read more…

By Tiffany Trader

PEARC20 Plenary Introduces Five Upcoming NSF-Funded HPC Systems

July 30, 2020

Five new HPC systems—three National Science Foundation-funded “Capacity” systems and two “Innovative Prototype/Testbed” systems—will be coming onlin Read more…

By Ken Chiacchia, Pittsburgh Supercomputing Center/XSEDE

Nvidia Dominates Latest MLPerf Training Benchmark Results

July 29, 2020

MLPerf.org released its third round of training benchmark (v0.7) results today and Nvidia again dominated, claiming 16 new records. Meanwhile, Google provided e Read more…

By John Russell

$39 Billion Worldwide HPC Market Faces 3.7% COVID-related Drop in 2020

July 29, 2020

Global HPC market revenue reached $39 billion in 2019, growing a healthy 8.2 percent over 2018, according to the latest analysis from Intersect360 Research. A 3 Read more…

By Tiffany Trader

Agenting Change: PEARC20 Keynote Encourages Cultural Change to Make Tech Better, More Diverse

July 29, 2020

The tech world will need to become more diverse if it is to thrive and survive, said Cherri Pancake, director of the Northwest Alliance for Computational Resear Read more…

By Ken Chiacchia, Pittsburgh Supercomputing Center/XSEDE

Supercomputer Modeling Tests How COVID-19 Spreads in Grocery Stores

April 8, 2020

In the COVID-19 era, many people are treating simple activities like getting gas or groceries with caution as they try to heed social distancing mandates and protect their own health. Still, significant uncertainty surrounds the relative risk of different activities, and conflicting information is prevalent. A team of Finnish researchers set out to address some of these uncertainties by... Read more…

By Oliver Peckham

Supercomputer-Powered Research Uncovers Signs of ‘Bradykinin Storm’ That May Explain COVID-19 Symptoms

July 28, 2020

Doctors and medical researchers have struggled to pinpoint – let alone explain – the deluge of symptoms induced by COVID-19 infections in patients, and what Read more…

By Oliver Peckham

Intel’s 7nm Slip Raises Questions About Ponte Vecchio GPU, Aurora Supercomputer

July 30, 2020

During its second-quarter earnings call, Intel announced a one-year delay of its 7nm process technology, which it says it will create an approximate six-month shift for its CPU product timing relative to prior expectations. The primary issue is a defect mode in the 7nm process that resulted in yield degradation... Read more…

By Tiffany Trader

Supercomputer Simulations Reveal the Fate of the Neanderthals

May 25, 2020

For hundreds of thousands of years, neanderthals roamed the planet, eventually (almost 50,000 years ago) giving way to homo sapiens, which quickly became the do Read more…

By Oliver Peckham

10nm, 7nm, 5nm…. Should the Chip Nanometer Metric Be Replaced?

June 1, 2020

The biggest cool factor in server chips is the nanometer. AMD beating Intel to a CPU built on a 7nm process node* – with 5nm and 3nm on the way – has been i Read more…

By Doug Black

Neocortex Will Be First-of-Its-Kind 800,000-Core AI Supercomputer

June 9, 2020

Pittsburgh Supercomputing Center (PSC - a joint research organization of Carnegie Mellon University and the University of Pittsburgh) has won a $5 million award Read more…

By Tiffany Trader

Nvidia Said to Be Close on Arm Deal

August 3, 2020

GPU leader Nvidia Corp. is in talks to buy U.K. chip designer Arm from parent company Softbank, according to several reports over the weekend. If consummated Read more…

By George Leopold

Nvidia’s Ampere A100 GPU: Up to 2.5X the HPC, 20X the AI

May 14, 2020

Nvidia's first Ampere-based graphics card, the A100 GPU, packs a whopping 54 billion transistors on 826mm2 of silicon, making it the world's largest seven-nanom Read more…

By Tiffany Trader

Leading Solution Providers

Contributors

Honeywell’s Big Bet on Trapped Ion Quantum Computing

April 7, 2020

Honeywell doesn’t spring to mind when thinking of quantum computing pioneers, but a decade ago the high-tech conglomerate better known for its control systems waded deliberately into the then calmer quantum computing (QC) waters. Fast forward to March when Honeywell announced plans to introduce an ion trap-based quantum computer whose ‘performance’ would... Read more…

By John Russell

Australian Researchers Break All-Time Internet Speed Record

May 26, 2020

If you’ve been stuck at home for the last few months, you’ve probably become more attuned to the quality (or lack thereof) of your internet connection. Even Read more…

By Oliver Peckham

15 Slides on Programming Aurora and Exascale Systems

May 7, 2020

Sometime in 2021, Aurora, the first planned U.S. exascale system, is scheduled to be fired up at Argonne National Laboratory. Cray (now HPE) and Intel are the k Read more…

By John Russell

‘Billion Molecules Against COVID-19’ Challenge to Launch with Massive Supercomputing Support

April 22, 2020

Around the world, supercomputing centers have spun up and opened their doors for COVID-19 research in what may be the most unified supercomputing effort in hist Read more…

By Oliver Peckham

Joliot-Curie Supercomputer Used to Build First Full, High-Fidelity Aircraft Engine Simulation

July 14, 2020

When industrial designers plan the design of a new element of a vehicle’s propulsion or exterior, they typically use fluid dynamics to optimize airflow and in Read more…

By Oliver Peckham

$100B Plan Submitted for Massive Remake and Expansion of NSF

May 27, 2020

Legislation to reshape, expand - and rename - the National Science Foundation has been submitted in both the U.S. House and Senate. The proposal, which seems to Read more…

By John Russell

John Martinis Reportedly Leaves Google Quantum Effort

April 21, 2020

John Martinis, who led Google’s quantum computing effort since establishing its quantum hardware group in 2014, has left Google after being moved into an advi Read more…

By John Russell

Google Cloud Debuts 16-GPU Ampere A100 Instances

July 7, 2020

On the heels of the Nvidia’s Ampere A100 GPU launch in May, Google Cloud is announcing alpha availability of the A100 “Accelerator Optimized” VM A2 instance family on Google Compute Engine. The instances are powered by the HGX A100 16-GPU platform, which combines two HGX A100 8-GPU baseboards using... Read more…

By Tiffany Trader

  • arrow
  • Click Here for More Headlines
  • arrow
Do NOT follow this link or you will be banned from the site!
Share This