Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

Scientists Set a New Simulation Speed Record on the Sequoia Supercomputer

02.05.2013
Computer scientists at Lawrence Livermore National Laboratory (LLNL) and Rensselaer Polytechnic Institute have set a high performance computing speed record that opens the way to the scientific exploration of complex planetary-scale systems.

In a paper to be published in May, the joint team will announce a record-breaking simulation speed of 504 billion events per second on LLNL’s Sequoia Blue Gene/Q supercomputer, dwarfing the previous record set in 2009 of 12.2 billion events per second.

Constructed by IBM, the 120-rack Sequoia supercomputer has a peak performance of 25 petaflops per second and is the second fastest supercomputer in the world, with a total speed and capacity equivalent to about one million desktop PCs. A petaflop is a quadrillion floating point operations per second.

In addition to breaking the record for computing speed, the research team set a record for the most highly parallel “discrete event simulation,” with 7.86 million simultaneous tasks using 1.97 million cores. Discrete event simulations are used to model irregular systems with behavior that cannot be described by equations, such as communication networks, traffic flows, economic and ecological models, military combat scenarios, and many other complex systems.

Prior to the record-setting experiment, a preliminary scaling study was conducted at the Rensselaer supercomputing center, the Computational Center for Nanotechnology Innovations (CCNI). The researchers tuned parameters on the CCNI’s two-rack Blue Gene/Q system and optimized the experiment to scale up and run on the 120-rack Sequoia system.

Authors of the study are Peter Barnes Jr. and David Jefferson of LLNL, and CCNI Director and computer science professor Chris Carothers and graduate student Justin LaPre of Rensselaer.

The records were set using the ROSS (Rensselaer’s Optimistic Simulation System) simulation package developed by Carothers and his students, and using the Time Warp synchronization algorithm originally developed by Jefferson.

“The significance of this demonstration is that direct simulation of ‘planetary scale’ models is now, in principle at least, within reach,” Barnes said. “‘Planetary scale’ in the context of the joint team’s work means simulations large enough to represent all 7 billion people in the world or the entire Internet’s few billion hosts.”

“This is an exciting time to be working in high performance computing, as we explore the petascale and move aggressively toward exascale computing,” Carothers said. “We are reaching an interesting transition point where our simulation capability is limited more by our ability to develop, maintain, and validate models of complex systems than by our ability to execute them in a timely manner.”

The calculations were completed while Sequoia was in unclassified “early science” service as part of the machine’s integration period. The system is now in classified service. Sequoia is dedicated to the National Nuclear Security Administration’s (NNSA) Advanced Simulation and Computing (ASC) program for stewardship of the nation’s nuclear weapons stockpile, a joint effort by LLNL, Los Alamos National Laboratory, and Sandia National Laboratories. The ASC program provided time on Sequoia to the LLNL-Rensselaer team as the capabilities tested have potential relevance to NNSA/DOE missions. This work also was supported by LLNL’s Laboratory Directed Research and Development program.

Since opening in 2007, the CCNI has enabled researchers at Rensselaer and around the country to tackle challenges ranging from advanced manufacturing to cancer screening to sustainable energy. External funding for these research activities has exceeded $50 million and has led to an economic impact of more than $130 million across New York state. A partnership between Rensselaer and IBM, CCNI currently supports a network of more than 850 researchers, faculty, and students from a mix of universities, government laboratories, and companies across a diverse spectrum of scientific and engineering disciplines.

Contact
Michael Mullaney
Rensselaer Polytechnic Institute
Troy, NY
518-276-6161
mullam@rpi.edu
Donald B. Johnston
Lawrence Livermore National Laboratory
Livermore, CA
925-423-4902
johnston19@llnl.gov

Michael Mullaney | Newswise
Further information:
http://www.rpi.edu

More articles from Information Technology:

nachricht Terahertz spectroscopy goes nano
20.10.2017 | Brown University

nachricht New software speeds origami structure designs
12.10.2017 | Georgia Institute of Technology

All articles from Information Technology >>>

The most recent press releases about innovation >>>

Die letzten 5 Focus-News des innovations-reports im Überblick:

Im Focus: Neutron star merger directly observed for the first time

University of Maryland researchers contribute to historic detection of gravitational waves and light created by event

On August 17, 2017, at 12:41:04 UTC, scientists made the first direct observation of a merger between two neutron stars--the dense, collapsed cores that remain...

Im Focus: Breaking: the first light from two neutron stars merging

Seven new papers describe the first-ever detection of light from a gravitational wave source. The event, caused by two neutron stars colliding and merging together, was dubbed GW170817 because it sent ripples through space-time that reached Earth on 2017 August 17. Around the world, hundreds of excited astronomers mobilized quickly and were able to observe the event using numerous telescopes, providing a wealth of new data.

Previous detections of gravitational waves have all involved the merger of two black holes, a feat that won the 2017 Nobel Prize in Physics earlier this month....

Im Focus: Smart sensors for efficient processes

Material defects in end products can quickly result in failures in many areas of industry, and have a massive impact on the safe use of their products. This is why, in the field of quality assurance, intelligent, nondestructive sensor systems play a key role. They allow testing components and parts in a rapid and cost-efficient manner without destroying the actual product or changing its surface. Experts from the Fraunhofer IZFP in Saarbrücken will be presenting two exhibits at the Blechexpo in Stuttgart from 7–10 November 2017 that allow fast, reliable, and automated characterization of materials and detection of defects (Hall 5, Booth 5306).

When quality testing uses time-consuming destructive test methods, it can result in enormous costs due to damaging or destroying the products. And given that...

Im Focus: Cold molecules on collision course

Using a new cooling technique MPQ scientists succeed at observing collisions in a dense beam of cold and slow dipolar molecules.

How do chemical reactions proceed at extremely low temperatures? The answer requires the investigation of molecular samples that are cold, dense, and slow at...

Im Focus: Shrinking the proton again!

Scientists from the Max Planck Institute of Quantum Optics, using high precision laser spectroscopy of atomic hydrogen, confirm the surprisingly small value of the proton radius determined from muonic hydrogen.

It was one of the breakthroughs of the year 2010: Laser spectroscopy of muonic hydrogen resulted in a value for the proton charge radius that was significantly...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

Event News

ASEAN Member States discuss the future role of renewable energy

17.10.2017 | Event News

World Health Summit 2017: International experts set the course for the future of Global Health

10.10.2017 | Event News

Climate Engineering Conference 2017 Opens in Berlin

10.10.2017 | Event News

 
Latest News

Terahertz spectroscopy goes nano

20.10.2017 | Information Technology

Strange but true: Turning a material upside down can sometimes make it softer

20.10.2017 | Materials Sciences

NRL clarifies valley polarization for electronic and optoelectronic technologies

20.10.2017 | Interdisciplinary Research

VideoLinks
B2B-VideoLinks
More VideoLinks >>>