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Primeur weekly 2016-10-03

Exascale supercomputing

NCI continues to lead Australian HPC capabilities with adoption of cutting-edge Intel processors ...

Quantum computing

D-Wave Systems previews 2000-qubit quantum system ...

First quantum photonic circuit with an electrically driven light source ...

Focus on Europe

Earlham Institute embraces Green-HPC for Collaborative Genome Analysis at Icelandic Data Centre Verne Global ...

Fortissimo has launched 2nd Open Call for proposals ...

STFC Computers get to the heart of the matter ...

Rob van Nieuwpoort, professor by special appointment of Efficient Computing for eScience ...

VTT Centre for Nuclear Safety inaugurated ...

Middleware

Allinea launches CUDA 8 support to enable code development for newest NVIDIA GPU technology ...

China endeavours to build a Big Data 'Smart Ocean' ...

Percepto and Orange Silicon Valley showcase advanced autonomous drone platform with 4G/LTE connectivity ...

Hardware

TSMC recognizes Synopsys with three partner awards for Interface IP and joint development of 7-nm ...

NetSpeed releases Gemini 3.0 cache-coherent NoC IP to supercharge heterogeneous SoC designs ...

Quantum provides Petascale data storage and management for major European research institutions ...

The University of Tokyo and the Joint Center for Advanced High Performance Computing (JCAHPC) to deploy DDN's file cache system IME14K ...

Introducing Xavier, the NVIDIA AI supercomputer for the future of autonomous transporation ...

Penguin Computing to deliver scalable enterprise storage for HPC, Big Data and VM ...

Applications

Loyola Marymount University researchers predict climate change will bring more droughts, more floods and water shortage ...

UMass Amherst engineers lead research team on creating new devices that emulate human biological synapses ...

Computer engineers boost app speeds by more than 9 percent ...

North Carolina School of Science and Mathematics awarded access to high-performance supercomputer ...

Hartree Centre presents at International Industrial Supercomputing Workshop ...

Mapping the electric underground ...

IBM Foundation collaborates with AFT and education leaders to use Watson to help teachers ...

Crosstalk analysis of biological networks for improved pathway annotation ...

How to merge two black holes in a simple way ...

Nijmegen provides solution for secure processing of patient data ...

The Cloud

Penguin Computing announces availability of unique multi-user remote desktop collaboration for Scyld Cloud workstation ...

Microsoft unveils new offerings to empower IT and drive digital transformation ...

Eurofiber’s Secure Cloud Connect service provides safe access to the Cloud ...

New NetApp software and Flash systems simplify data management, boost performance in the hybrid Cloud ...

Penguin Computing announces OpenPOWER server platform and go-to-market partner Mark III systems ...

Clarient Global adopts IBM Cloud and VMware for enhanced private Cloud capabilities ...

Computer engineers boost app speeds by more than 9 percent

26 Sep 2016 Raleigh - Researchers from North Carolina State University and Samsung Electronics have found a way to boost the speed of computer applications by more than 9 percent. The improvement results from techniques that allow computer processors to retrieve data more efficiently.

Computer processors have to retrieve data from memory to perform operations. All data is stored in off-chip "main" memory. But data that the processor will use a lot is also stored - temporarily - in a die-stacked dynamic random access memory (DRAM) cache that is located closer to the processor, where it can be retrieved more quickly.

The data in the cache is organized into large blocks, or macroblocks, so that the processor knows where to find whatever data it needs. However, for any given operation, the processor doesn't need all of the data in a macroblock - and retrieving the unnecessary data takes time and energy.

To make the process more efficient, researchers have developed a technique in which the cache learns over time which data the processor needs from each macroblock. This allows the cache to do two things. First, the cache can compress the macroblock, retrieving only the relevant data. This enables the cache to send data to the processor more efficiently. Second, because the macroblock is compressed, this frees up space in the cache that can be used to store other data, which the processor is more likely to need.

The researchers tested this approach, called Dense Footprint Cache, in a processor and memory simulator. After running 3 billion instructions for each application tested through the simulator, the researchers found that the Dense Footprint Cache sped up applications by 9.5 percent compared to state-of-the-art competing methods for managing die-stacked DRAM. Dense Footprint Cache also used 4.3 percent less energy.

The researchers also found that Dense Footprint Cache led to a significant improvement in "last-level cache miss ratios". Last-level cache misses occur when the processor tries to retrieve data from the cache, but the data aren't there, forcing the processor to retrieve the data from off-chip main memory. These cache misses make operations much less efficient - and Dense Footprint Cache reduced last-level cache miss ratios by 43 percent.

The work is featured in a paper, " Dense Footprint Cache: Capacity-Efficient Die-Stacked DRAM Last Level Cache ", that will be presented at the International Symposium on Memory Systems, October 3-6 in Washington, D.C.

Lead author of the paper is Seunghee Shin, a Ph.D. student at NC State. The paper was co-authored by Yan Solihin, a professor of electrical and computer engineering at NC State, and Sihong Kim of Samsung Electronics.
Source: North Carolina State University

Back to Table of contents

Primeur weekly 2016-10-03

Exascale supercomputing

NCI continues to lead Australian HPC capabilities with adoption of cutting-edge Intel processors ...

Quantum computing

D-Wave Systems previews 2000-qubit quantum system ...

First quantum photonic circuit with an electrically driven light source ...

Focus on Europe

Earlham Institute embraces Green-HPC for Collaborative Genome Analysis at Icelandic Data Centre Verne Global ...

Fortissimo has launched 2nd Open Call for proposals ...

STFC Computers get to the heart of the matter ...

Rob van Nieuwpoort, professor by special appointment of Efficient Computing for eScience ...

VTT Centre for Nuclear Safety inaugurated ...

Middleware

Allinea launches CUDA 8 support to enable code development for newest NVIDIA GPU technology ...

China endeavours to build a Big Data 'Smart Ocean' ...

Percepto and Orange Silicon Valley showcase advanced autonomous drone platform with 4G/LTE connectivity ...

Hardware

TSMC recognizes Synopsys with three partner awards for Interface IP and joint development of 7-nm ...

NetSpeed releases Gemini 3.0 cache-coherent NoC IP to supercharge heterogeneous SoC designs ...

Quantum provides Petascale data storage and management for major European research institutions ...

The University of Tokyo and the Joint Center for Advanced High Performance Computing (JCAHPC) to deploy DDN's file cache system IME14K ...

Introducing Xavier, the NVIDIA AI supercomputer for the future of autonomous transporation ...

Penguin Computing to deliver scalable enterprise storage for HPC, Big Data and VM ...

Applications

Loyola Marymount University researchers predict climate change will bring more droughts, more floods and water shortage ...

UMass Amherst engineers lead research team on creating new devices that emulate human biological synapses ...

Computer engineers boost app speeds by more than 9 percent ...

North Carolina School of Science and Mathematics awarded access to high-performance supercomputer ...

Hartree Centre presents at International Industrial Supercomputing Workshop ...

Mapping the electric underground ...

IBM Foundation collaborates with AFT and education leaders to use Watson to help teachers ...

Crosstalk analysis of biological networks for improved pathway annotation ...

How to merge two black holes in a simple way ...

Nijmegen provides solution for secure processing of patient data ...

The Cloud

Penguin Computing announces availability of unique multi-user remote desktop collaboration for Scyld Cloud workstation ...

Microsoft unveils new offerings to empower IT and drive digital transformation ...

Eurofiber’s Secure Cloud Connect service provides safe access to the Cloud ...

New NetApp software and Flash systems simplify data management, boost performance in the hybrid Cloud ...

Penguin Computing announces OpenPOWER server platform and go-to-market partner Mark III systems ...

Clarient Global adopts IBM Cloud and VMware for enhanced private Cloud capabilities ...