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High Throughput and low latency lZ4 Compressor on FPGA

High Throughput and Low Latency LZ4 Compressor on FPGA

引用

2019 International Conference on Reconfigurable Computing and FPGAs, ReConFig 2019

作者： Benes, Tomas Bartik, Matej Kubalik, Pavel CTU FIT CESNET A.l.e CTU FIT

ISBN: (纸本)9781728119571

This paper presents an FPGA design implementing a single lZ4 lossless compression IP block, providing a throughput of 6 Gbps combined with extremely low latency, while still retaining full binary compatibility with the original lZ4 format. The best-known competitor is capable of processing up to 2 Gbps per block/engine with unknown latency. The presented design uses two key features: A low-latency 8-way match search unit and consequently a match buffer which allows encoding lZ4 sequences independently to reduce stalls in the data processing pipeline. The design was evaluated on several compression corpora with an average compression ratio of 1.7. © 2019 Ieee.

关键词： Pipelines

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MTPP - Modular Traffic Processing Platform

MTPP - Modular Traffic Processing Platform

引用

Ieee Design and Diagnostics of electronic Circuits and Systems (DDeCS)

作者： Jiri Halak Sven Ubik CESNET CESNET a.l.e Czech Republic

High-speed (10 Gb/s and above) network monitoring and traffic processing requires hardware acceleration. Different applications require different functions to be placed in hardware. Current packet capture cards include fixed firmware, which is difficult to extend. In this paper we propose an architecture for Modular Traffic Processing Platform (MTPP), which enables end users to easily modify hardware processing without any FPGA development. On the other hand, developers can create new processing modules with much reduced effort thanks to simple module interfaces and isolation of module time constraints.

关键词： Hardware Monitoring Microprogramming Telecommunication traffic Transceivers Field programmable gate arrays Application software Computer architecture Acceleration Programming profession

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Czechlight family of optical networking equipment

CzechLight family of optical networking equipment

引用

International Conference/Workshop on laser and Fiber-Optical Networks Modeling (lFNM)

作者： Karel Slavicek Josef Vojtech CESNET a.l.e Brno Czech Republic CESNET a.l.e Prague Czech Republic

cesnet is an association of universities and Academy of science of Czech republic. It is operating a national research and education network (NReN) interconnecting all university cities in the republic. On some lines it it very reasonable to use only one single fiber line. In this paper we discuss technology used on such lines in the cesnet backbone. The key motivation for ClA-based static DWDM systems is optical line deployment with the cost effective solution to get a few independent optical channels (typically 4-8) with capacity 1-10 Gbps for various data connections on one dark fiber pair.

关键词： Optical attenuators Optical fibers Wavelength measurement Optical variables measurement Wavelength division multiplexing

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Real-time anonymization in passive network monitoring

Real-time anonymization in passive network monitoring

引用

International Conference on Networking and Services (ICNS)

作者： Sven Ubik Petr Zejdl Jiri Halak CESNET a.l.e Czech Republic

ISBN: (纸本)9781424431526;9780769525588

Passive network monitoring that observes user traffic has many advantages over active monitoring that uses test packets. It can provide characteristics of real user traffic, that cannot be detected actively. However, when processing user traffic, we must guarantee user privacy. This is a task of packet header anonymization that removes sensitive information, while keeping as much as possible of the original traffic properties. In this paper we present design and implementation of an FPGA-based packet header anonymization that unlike previous approaches operates in real time and prevents sensitive information from getting to the monitoring PC and beyond.

关键词： Passive networks Monitoring Telecommunication traffic Hardware Privacy Testing Cryptography Payloads Vegetation mapping Throughput

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Introduction of alien wavelength into cesnet DWDM backbone

Introduction of alien wavelength into Cesnet DWDM backbone

引用

International Conference on Information, Communications and Signal Processing

作者： Karel Slavicek Vaclav Novak CESNET a.l.e Brno Czech Republic CESNET a.l.e Prague Czech Republic

ISBN: (纸本)9781424409822;1424409829

cesnet is an association of universities and Academy of science of Czech republic. It is operating a national research and education network (NReN) interconnecting all university cities in the republic. The optical transport backbone of this network is based on DWDM. Commonly used DWDM equipment are optimised for usage of transponders for connection of the user signal to transport network. For some particular applications we have utilised "coloured" signal and avoid transponders. lab measurements and deployment of this solutions is described in the following article.

关键词： Wavelength division multiplexing Spine Transponders Chromatic dispersion educational institutions Optical fiber networks Biomedical optical imaging Cities and towns Bandwidth Optical fiber devices

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Tbwtools: Processing TCP Performance Information

Tbwtools: Processing TCP Performance Information

引用

Ieee International Conference on Signal Processing and Communications, ICSPC

作者： Sven Ubik Ales Friedl Vaclav Rehak lukas Baxa CESNET a.l.e Czech Republic CESNET Czech Republic

The installed capacity of backbone network lines can now carry multiple gigabits of data per second. Still, users still often experience low performance for a variety of reasons. leveraging our experience from the PeRT group (performance enhancement and response team) within the european GN2 project, we have developed tbwtools - a framework for processing TCP performance information gathered from several sources, which allows integrated performance debugging.

关键词： Sockets Debugging Runtime Throughput Remote monitoring Watches Hardware System testing Instruments User interfaces

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Multigigabit network traffic processing

Multigigabit network traffic processing

引用

International Conference on Field Programmable logic and Applications

作者： Jiri Halak CESNET a.l.e Czech Republic

High-speed (10 Gb/s and above) network monitoring and traffic processing requires hardware acceleration. Different applications require different functions to be placed in hardware. This paper presents the architecture and platform for processing network packets at speed of 10 Gb/s. The platform can process the packets at full speed without a packet drop and is easily extendable by plug-in modules that can be changed without the need of shutting down the entire platform.

关键词： Telecommunication traffic Hardware Clocks Field programmable gate arrays Rockets Global Positioning System Cyclic redundancy check Wires ethernet networks linux

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A novel and efficient method to initialize FPGA embedded memory content in asymptotically constant time

A novel and efficient method to initialize FPGA embedded mem...

引用

International Conference on Reconfigurable Computing and FPGAs (ReConFig)

作者： Matěj Bartík Sven Ubik Pavel Kubalík CTU FIT & CESNET a.l.e CESNET ale CTU FIT

This paper describes analysis and implementation of a new method for maintaining valid content of FPGA memory blocks with an asymptotically constant time synchronous clear ability, that can be useful for (re)initialization to one default value. A particular application can be for high-speed real-time lZ77 [1] lossless compression algorithms, where a dictionary has to be (re)initialized before each run of the implemented compression algorithm. The method is based on two most widely used techniques for clearing the memory content: a linear passage of the memory and clearing each cell by writing a default value and creating a register field providing an (in)valid bit for each memory cell. Our solution combines these two techniques together with the use of FPGA distributed memory blocks implemented in lUTs (look-Up Tables) to overcome negative features of each previous method without losing the most of positive features. Our solution provides a balance between the two previous techniques and exceeds them in speed, resources utilization and latency of (re)initialization.

关键词： Field programmable gate arrays Dictionaries Table lookup Random access memory Compression algorithms Hardware

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Job Scheduling Strategies for Parallel Processing 1

引用

丛书名： lecture Notes in Computer Science

1000年

作者： Dalibor Klusáček Julita Corbalán Gonzalo P. Rodrigo

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Surgery telepresence for universities and symposia

Surgery telepresence for universities and symposia

引用

International Conference on e-health Networking, Applications and Services (HealthCom)

作者： Jiri Navratil Sven Ubik CESNET a.l.e Prague Czech Republic

In medical education, more than in other areas, practices are used characterized as “learning by doing” and “learning through examples”. Video and videoconferencing are effective tools which can play an important ... 详细信息

关键词： Surgery Streaming media High definition video Hospitals Biomedical imaging Telemedicine Cameras

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