Virginia Tech Researchers Discover Key to Faster Processing for Exascale

June 15, 2017

BLACKSBURG, Va., June 15, 2017 — Exascale computing — the ability to perform calculations at 1 billion billion per second — is what researchers are striving to push processors to do in the next decade. That’s 1,000 times faster than the first petascale computer that came into existence in 2008.

Achieving efficiency will be paramount to building high-performance parallel computing systems if applications are to run in environments of enormous scale and also limited power.

A team of researchers in the Department of Computer Science in Virginia Tech’s College of Engineering discovered a key to what could keep supercomputing on the road to the ever-faster processing times needed to achieve exascale computing — and what policymakers say is necessary to keep the United States competitive in industries from everything to cybersecurity to ecommerce.

“Parallel computing is everywhere when you think about it,”said Bo Li, computer science Ph.D. candidate and first author on the paper being presented about the team’s research this month. “From making Hollywood movies to managing cybersecurity threats to contributing to milestones in life science research, making strides in processing times is a priority to get to the next generation of supercomputing.”

Li will present the team’s research on June 29 at the Association for Computing Machinery’s 26th International Symposium on High Performance Parallel and Distributed Computing in Washington, D.C. The research was funded by the National Science Foundation.

The team used a model called Compute-Overlap-Stall (COS) to better isolate contributions to the total time to completion for important parallel applications. By using the COS model they found that a nebulous measurement called overlap played a key role in understanding the performance of parallel systems. Previous models lumped overlap time into either compute time or memory stall time, but the Virginia Tech team found that when system and application variables changed, the effects of overlap time were unique and could dominate performance. This led to the realization that the dominance and complexity of overlap meant it had to be modeled independently on current and future systems or efficiency would remain elusive.

“What we learned is that overlap time is not an insignificant player in computer run times and the time it takes to perform tasks,” said Kirk Cameron, professor of computer science and lead on the project. “Researchers have spent three decades increasing overlap and we have shown that in order to improve the efficiency of future designs, we must consider their precise impact on overlap in isolation.”

The Virginia Tech researchers applied COS modeling to both Intel and IBM architectures and found that the error rate was as low as 7 percent on Intel systems and as high as 17 percent on IBM architecture. The team validated their models on 19 different applications as benchmarks. The application benchmarks used the following code: LULESH, AMGmk, Rodinia, and pF3D.

“This study is important to all kinds of industries who care about efficiency,” said Li. “Any entity that relies on supercomputing including cybersecurity organizations, large online retailers such as Amazon and video distribution services like Netflix, would be affected by the changes in processing time we found in measuring overlap.”

One of the challenges in the study was “throttling” three elements: central processing unit speed, memory speed, and concurrency, or running several threads at once. Throttling refers to a sequence that causes the computer to be idle for several cycles. This is the first paper to evaluate the simultaneous combined effects of all three methods.

Parallel computing in the exascale realm has the potential to open up so many new frontiers in myriad areas of scientific research, it is almost boundless. Understanding overlap and how to make computers run their most efficiently will be a significant key to achieving the computing power required to run massive amounts of calculations in the not-too-distant future.


Source: Virginia Tech

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!

Q&A with Altair CEO James Scapa, an HPCwire Person to Watch in 2021

May 14, 2021

Chairman, CEO and co-founder of Altair James R. Scapa closed several acquisitions for the company in 2020, including the purchase and integration of Univa and Ellexus. Scapa founded Altair more than 35 years ago with two Read more…

HLRS HPC Helps to Model Muscle Movements

May 13, 2021

The growing scale of HPC is allowing simulation of more and more complex systems at greater detail than ever before, particularly in the biological research spheres. Now, researchers at the University of Stuttgart are le Read more…

Behind the Met Office’s Procurement of a Billion-Dollar Microsoft System

May 13, 2021

The UK’s national weather service, the Met Office, caused shockwaves of curiosity a few weeks ago when it formally announced that its forthcoming billion-dollar supercomputer – expected to be the most powerful weather and climate-focused supercomputer in the world when it launches in 2022... Read more…

AMD, GlobalFoundries Commit to $1.6 Billion Wafer Supply Deal

May 13, 2021

AMD plans to purchase $1.6 billion worth of wafers from GlobalFoundries in the 2022 to 2024 timeframe, the chipmaker revealed today (May 13) in an SEC filing. In the face of global semiconductor shortages and record-high demand, AMD is renegotiating its Wafer Supply Agreement and bumping up capacity. Read more…

Hyperion Offers Snapshot of Quantum Computing Market

May 13, 2021

The nascent quantum computer (QC) market will grow 27 percent annually (CAGR) reaching $830 million in 2024 according to an update provided today by analyst firm Hyperion Research at the HPC User Forum being held this we Read more…

AWS Solution Channel

Numerical weather prediction on AWS Graviton2

The Weather Research and Forecasting (WRF) model is a numerical weather prediction (NWP) system designed to serve both atmospheric research and operational forecasting needs. Read more…

Hyperion: HPC Server Market Ekes 1 Percent Gain in 2020, Storage Poised for ‘Tipping Point’

May 12, 2021

The HPC User Forum meeting taking place virtually this week (May 11-13) kicked off with Hyperion Research’s market update, covering the 2020 period. Although the HPC server market had been facing a 6.7 percent COVID-re Read more…

Behind the Met Office’s Procurement of a Billion-Dollar Microsoft System

May 13, 2021

The UK’s national weather service, the Met Office, caused shockwaves of curiosity a few weeks ago when it formally announced that its forthcoming billion-dollar supercomputer – expected to be the most powerful weather and climate-focused supercomputer in the world when it launches in 2022... Read more…

AMD, GlobalFoundries Commit to $1.6 Billion Wafer Supply Deal

May 13, 2021

AMD plans to purchase $1.6 billion worth of wafers from GlobalFoundries in the 2022 to 2024 timeframe, the chipmaker revealed today (May 13) in an SEC filing. In the face of global semiconductor shortages and record-high demand, AMD is renegotiating its Wafer Supply Agreement and bumping up capacity. Read more…

Hyperion Offers Snapshot of Quantum Computing Market

May 13, 2021

The nascent quantum computer (QC) market will grow 27 percent annually (CAGR) reaching $830 million in 2024 according to an update provided today by analyst fir Read more…

Hyperion: HPC Server Market Ekes 1 Percent Gain in 2020, Storage Poised for ‘Tipping Point’

May 12, 2021

The HPC User Forum meeting taking place virtually this week (May 11-13) kicked off with Hyperion Research’s market update, covering the 2020 period. Although Read more…

IBM Debuts Qiskit Runtime for Quantum Computing; Reports Dramatic Speed-up

May 11, 2021

In conjunction with its virtual Think event, IBM today introduced an enhanced Qiskit Runtime Software for quantum computing, which it says demonstrated 120x spe Read more…

AMD Chipmaker TSMC to Use AMD Chips for Chipmaking

May 8, 2021

TSMC has tapped AMD to support its major manufacturing and R&D workloads. AMD will provide its Epyc Rome 7702P CPUs – with 64 cores operating at a base cl Read more…

Fast Pass Through (Some of) the Quantum Landscape with ORNL’s Raphael Pooser

May 7, 2021

In a rather remarkable way, and despite the frequent hype, the behind-the-scenes work of developing quantum computing has dramatically accelerated in the past f Read more…

IBM Research Debuts 2nm Test Chip with 50 Billion Transistors

May 6, 2021

IBM Research today announced the successful prototyping of the world's first 2 nanometer chip, fabricated with silicon nanosheet technology on a standard 300mm Read more…

AMD Chipmaker TSMC to Use AMD Chips for Chipmaking

May 8, 2021

TSMC has tapped AMD to support its major manufacturing and R&D workloads. AMD will provide its Epyc Rome 7702P CPUs – with 64 cores operating at a base cl Read more…

Intel Launches 10nm ‘Ice Lake’ Datacenter CPU with Up to 40 Cores

April 6, 2021

The wait is over. Today Intel officially launched its 10nm datacenter CPU, the third-generation Intel Xeon Scalable processor, codenamed Ice Lake. With up to 40 Read more…

Julia Update: Adoption Keeps Climbing; Is It a Python Challenger?

January 13, 2021

The rapid adoption of Julia, the open source, high level programing language with roots at MIT, shows no sign of slowing according to data from Julialang.org. I Read more…

CERN Is Betting Big on Exascale

April 1, 2021

The European Organization for Nuclear Research (CERN) involves 23 countries, 15,000 researchers, billions of dollars a year, and the biggest machine in the worl Read more…

HPE Launches Storage Line Loaded with IBM’s Spectrum Scale File System

April 6, 2021

HPE today launched a new family of storage solutions bundled with IBM’s Spectrum Scale Erasure Code Edition parallel file system (description below) and featu Read more…

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…

Saudi Aramco Unveils Dammam 7, Its New Top Ten Supercomputer

January 21, 2021

By revenue, oil and gas giant Saudi Aramco is one of the largest companies in the world, and it has historically employed commensurate amounts of supercomputing Read more…

Quantum Computer Start-up IonQ Plans IPO via SPAC

March 8, 2021

IonQ, a Maryland-based quantum computing start-up working with ion trap technology, plans to go public via a Special Purpose Acquisition Company (SPAC) merger a Read more…

Leading Solution Providers

Contributors

AMD Launches Epyc ‘Milan’ with 19 SKUs for HPC, Enterprise and Hyperscale

March 15, 2021

At a virtual launch event held today (Monday), AMD revealed its third-generation Epyc “Milan” CPU lineup: a set of 19 SKUs -- including the flagship 64-core, 280-watt 7763 part --  aimed at HPC, enterprise and cloud workloads. Notably, the third-gen Epyc Milan chips achieve 19 percent... Read more…

Can Deep Learning Replace Numerical Weather Prediction?

March 3, 2021

Numerical weather prediction (NWP) is a mainstay of supercomputing. Some of the first applications of the first supercomputers dealt with climate modeling, and Read more…

Livermore’s El Capitan Supercomputer to Debut HPE ‘Rabbit’ Near Node Local Storage

February 18, 2021

A near node local storage innovation called Rabbit factored heavily into Lawrence Livermore National Laboratory’s decision to select Cray’s proposal for its CORAL-2 machine, the lab’s first exascale-class supercomputer, El Capitan. Details of this new storage technology were revealed... Read more…

African Supercomputing Center Inaugurates ‘Toubkal,’ Most Powerful Supercomputer on the Continent

February 25, 2021

Historically, Africa hasn’t exactly been synonymous with supercomputing. There are only a handful of supercomputers on the continent, with few ranking on the Read more…

GTC21: Nvidia Launches cuQuantum; Dips a Toe in Quantum Computing

April 13, 2021

Yesterday Nvidia officially dipped a toe into quantum computing with the launch of cuQuantum SDK, a development platform for simulating quantum circuits on GPU-accelerated systems. As Nvidia CEO Jensen Huang emphasized in his keynote, Nvidia doesn’t plan to build... Read more…

New Deep Learning Algorithm Solves Rubik’s Cube

July 25, 2018

Solving (and attempting to solve) Rubik’s Cube has delighted millions of puzzle lovers since 1974 when the cube was invented by Hungarian sculptor and archite Read more…

The History of Supercomputing vs. COVID-19

March 9, 2021

The COVID-19 pandemic poses a greater challenge to the high-performance computing community than any before. HPCwire's coverage of the supercomputing response t Read more…

Microsoft to Provide World’s Most Powerful Weather & Climate Supercomputer for UK’s Met Office

April 22, 2021

More than 14 months ago, the UK government announced plans to invest £1.2 billion ($1.56 billion) into weather and climate supercomputing, including procuremen Read more…

  • arrow
  • Click Here for More Headlines
  • arrow
HPCwire