Welcome!

News Feed Item

Fujitsu Laboratories Develops Technology to Reduce Network Switches in Cluster Supercomputers by 40%

Maintains network performance, lowers energy consumption

Tokyo, July 15, 2014 - (JCN Newswire) - Fujitsu Laboratories Ltd. today announced that it has developed a technology that reduces the number of network switches used in a cluster supercomputer(1) system comprised of several thousand units by 40% while maintaining the same level of network performance.

Existing cluster supercomputers typically use a "fat tree" network topology(2), in which, for example, 6,000 servers would require about 800 switches, or possibly more than 2,000 switches, with network performance that needs redundancy and other features. Networks account for up to about 20% of the power consumed by a supercomputer system, which means there are high expectations for a new network technology that can maintain good network performance with fewer switches.

Fujitsu Laboratories has used a multi-layer full mesh topology in combination with a newly developed communications algorithm that controls transmission sequences to avoid data collisions. This means that, even in all-to-all communications, which are prone to bottlenecks during application execution, performance stays on par with existing technology while using roughly 40% fewer switches, saving energy without sacrificing performance.

Details of this technology are being presented at the Summer United Workshops on Parallel, Distributed and Cooperative Processing 2014 (SWoPP 2014), opening July 28 in Niigata City, Japan.

Background

Cluster supercomputers have been widely used in the fields of manufacturing, such as for the design of mobile phones, cars, and airplanes, as well as scientific technology computing. Increasingly, though, they are being used in new areas, such as in in silico drug discovery and medicine, and to analyze earthquakes and weather phenomena, and these applications require even more powerful supercomputers.

To realize increased supercomputing performance, multiple servers are connected by networks. These servers are equipped with high-performance computation units consisting of accelerators that are typically many-core processors which have multiple CPUs or GPGPUs(3)

Technological Issues

In order for the supercomputer's computing performance to be useful to a wide range of applications, the network joining the servers needs to have higher performance. In the fat-tree network topology, tiers are set based on the extent of the servers being connected, and the redundancy of paths in the tree-like network topology that connects the switches results in fast network performance. For example, a system with 6,000 servers would require 800 switches, each with 36 ports, to connect them.

Thanks to the redundancy of routes in the fat-tree topology, when running a fast Fourier transform, for example, as part of an analysis on a cluster supercomputer, all-to-all communications among the servers shows good network performance. Meanwhile, many-core processors in individual servers or accelerators such as GPGPUs produce dramatic jumps in performance. Network performance needs to be improved so that it stays balanced with computational performance, and this requires many more switches, but increasing the number of switches entails the problem of higher costs for materials, electric power, and installed space.

About the Technology

What Fujitsu Laboratories has done is to develop a technology that can accommodate a large number of servers with relatively few switches by considering what would be an optimized data-exchange process, then connecting the cluster in a new way. This reduces the number of switches needed to connect a given number of nodes by roughly 40% compared to a fat-tree network topology while maintaining equivalent performance levels under the maximum-load communication pattern of all-to-all communications.

Key features of the technology are as follows.

1. Multi-layer full-mesh network topology

Fujitsu Laboratories developed a structure where switches for indirect connections are arrayed around the periphery of a full-mesh framework that connects all switches directly, and multiple full-mesh structures are connected to each other. Compared to a three-layer fat-tree network topology, this eliminates an entire layer of switches, with switch ports being used more efficiently and a smaller number of switches in use.

2.Data-exchange process avoids path contention

In all-to-all communications, where each server is exchanging data with every other server, reducing the number of switches also reduces the number of paths between servers, which is likely to result in collisions. Fujitsu Laboratories was able to achieve all-to-all communications performance on par with a fat-tree topology by taking advantage of the multi-layer full mesh network topology in the process of transferring data between servers. By using scheduling, servers connected to the various apex switches (A through F) will divert to a different apex, and also by avoid collisions within paths that traverse different layers (a1 through d3).

Results

This technology makes it possible to maintain the performance of large-scale cluster supercomputers that are needed for such applications as drug discovery and medicine, and to analyze earthquakes and weather phenomena, while lowering facility costs and power costs. This thereby enables the provision of supercomputers that achieve high performance while conserving energy.

Future Plans

Fujitsu Laboratories plans to have a practical implementation of this technology during fiscal 2015. It also plans to continue research into topologies for large-scale computing systems that do not depend on increasing numbers of switches.

Note:

(1) Cluster supercomputer

A supercomputer made up of numerous PC servers connected by a high-speed network.

(2) Fat tree topology

A network topology that follows a basic tree-like structure, with multiplexed higher layers. A key benefit of this topology is that it avoids network congestion.

(3) GPGPU

A "general-purpose graphic processing unit" is a specialized processor for not only image processing, but has other uses as well as it has the ability to perform certain kinds of calculations very quickly. This has made them increasingly popular in supercomputers recently.

About Fujitsu Limited

Fujitsu is the leading Japanese information and communication technology (ICT) company offering a full range of technology products, solutions and services. Approximately 170,000 Fujitsu people support customers in more than 100 countries. We use our experience and the power of ICT to shape the future of society with our customers. Fujitsu Limited (TSE: 6702) reported consolidated revenues of 4.4 trillion yen (US$47 billion) for the fiscal year ended March 31, 2013 For more information, please see www.fujitsu.com.



Source: Fujitsu Limited

Contact:
Fujitsu Limited
Public and Investor Relations
www.fujitsu.com/global/news/contacts/
+81-3-3215-5259


Copyright 2014 JCN Newswire. All rights reserved. www.japancorp.net

More Stories By JCN Newswire

Copyright 2008 JCN Newswire. All rights reserved. Republication or redistribution of JCN Newswire content is expressly prohibited without the prior written consent of JCN Newswire. JCN Newswire shall not be liable for any errors or delays in the content, or for any actions taken in reliance thereon.

Latest Stories
SYS-CON Events announced today that Isomorphic Software will exhibit at DevOps Summit at 19th International Cloud Expo, which will take place on November 1–3, 2016, at the Santa Clara Convention Center in Santa Clara, CA. Isomorphic Software provides the SmartClient HTML5/AJAX platform, the most advanced technology for building rich, cutting-edge enterprise web applications for desktop and mobile. SmartClient combines the productivity and performance of traditional desktop software with the simp...
The emerging Internet of Everything creates tremendous new opportunities for customer engagement and business model innovation. However, enterprises must overcome a number of critical challenges to bring these new solutions to market. In his session at @ThingsExpo, Michael Martin, CTO/CIO at nfrastructure, outlined these key challenges and recommended approaches for overcoming them to achieve speed and agility in the design, development and implementation of Internet of Everything solutions wi...
Cloud computing is being adopted in one form or another by 94% of enterprises today. Tens of billions of new devices are being connected to The Internet of Things. And Big Data is driving this bus. An exponential increase is expected in the amount of information being processed, managed, analyzed, and acted upon by enterprise IT. This amazing is not part of some distant future - it is happening today. One report shows a 650% increase in enterprise data by 2020. Other estimates are even higher....
I wanted to gather all of my Internet of Things (IOT) blogs into a single blog (that I could later use with my University of San Francisco (USF) Big Data “MBA” course). However as I started to pull these blogs together, I realized that my IOT discussion lacked a vision; it lacked an end point towards which an organization could drive their IOT envisioning, proof of value, app dev, data engineering and data science efforts. And I think that the IOT end point is really quite simple…
Internet of @ThingsExpo, taking place November 1-3, 2016, at the Santa Clara Convention Center in Santa Clara, CA, is co-located with 19th Cloud Expo and will feature technical sessions from a rock star conference faculty and the leading industry players in the world. The Internet of Things (IoT) is the most profound change in personal and enterprise IT since the creation of the Worldwide Web more than 20 years ago. All major researchers estimate there will be tens of billions devices - comp...
Qosmos has announced new milestones in the detection of encrypted traffic and in protocol signature coverage. Qosmos latest software can accurately classify traffic encrypted with SSL/TLS (e.g., Google, Facebook, WhatsApp), P2P traffic (e.g., BitTorrent, MuTorrent, Vuze), and Skype, while preserving the privacy of communication content. These new classification techniques mean that traffic optimization, policy enforcement, and user experience are largely unaffected by encryption. In respect wit...
"My role is working with customers, helping them go through this digital transformation. I spend a lot of time talking to banks, big industries, manufacturers working through how they are integrating and transforming their IT platforms and moving them forward," explained William Morrish, General Manager Product Sales at Interoute, in this SYS-CON.tv interview at 18th Cloud Expo, held June 7-9, 2016, at the Javits Center in New York City, NY.
Internet of @ThingsExpo, taking place November 1-3, 2016, at the Santa Clara Convention Center in Santa Clara, CA, is co-located with the 19th International Cloud Expo and will feature technical sessions from a rock star conference faculty and the leading industry players in the world and ThingsExpo Silicon Valley Call for Papers is now open.
To leverage Continuous Delivery, enterprises must consider impacts that span functional silos, as well as applications that touch older, slower moving components. Managing the many dependencies can cause slowdowns. See how to achieve continuous delivery in the enterprise.
Today we can collect lots and lots of performance data. We build beautiful dashboards and even have fancy query languages to access and transform the data. Still performance data is a secret language only a couple of people understand. The more business becomes digital the more stakeholders are interested in this data including how it relates to business. Some of these people have never used a monitoring tool before. They have a question on their mind like “How is my application doing” but no id...
Kubernetes, Docker and containers are changing the world, and how companies are deploying their software and running their infrastructure. With the shift in how applications are built and deployed, new challenges must be solved. In his session at @DevOpsSummit at19th Cloud Expo, Sebastian Scheele, co-founder of Loodse, will discuss the implications of containerized applications/infrastructures and their impact on the enterprise. In a real world example based on Kubernetes, he will show how to ...
The 19th International Cloud Expo has announced that its Call for Papers is open. Cloud Expo, to be held November 1-3, 2016, at the Santa Clara Convention Center in Santa Clara, CA, brings together Cloud Computing, Big Data, Internet of Things, DevOps, Digital Transformation, Microservices and WebRTC to one location. With cloud computing driving a higher percentage of enterprise IT budgets every year, it becomes increasingly important to plant your flag in this fast-expanding business opportuni...
SYS-CON Events announced today that eCube Systems, a leading provider of middleware modernization, integration, and management solutions, will exhibit at @DevOpsSummit at 19th International Cloud Expo, which will take place on November 1–3, 2016, at the Santa Clara Convention Center in Santa Clara, CA. eCube Systems offers a family of middleware evolution products and services that maximize return on technology investment by leveraging existing technical equity to meet evolving business needs. ...
19th Cloud Expo, taking place November 1-3, 2016, at the Santa Clara Convention Center in Santa Clara, CA, will feature technical sessions from a rock star conference faculty and the leading industry players in the world. Cloud computing is now being embraced by a majority of enterprises of all sizes. Yesterday's debate about public vs. private has transformed into the reality of hybrid cloud: a recent survey shows that 74% of enterprises have a hybrid cloud strategy. Meanwhile, 94% of enterpri...
Using new techniques of information modeling, indexing, and processing, new cloud-based systems can support cloud-based workloads previously not possible for high-throughput insurance, banking, and case-based applications. In his session at 18th Cloud Expo, John Newton, CTO, Founder and Chairman of Alfresco, described how to scale cloud-based content management repositories to store, manage, and retrieve billions of documents and related information with fast and linear scalability. He addres...