ARCS - Conference on Architecture of Computing Systems
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Conference Paper Achieving scalability for job centric monitoring in a distributed infrastructure(Gesellschaft für Informatik e.V., 2012) Hilbrich, Marcus; Müller-Pfefferkorn, Ralph; Mühl, Gero; Richling, Jan; Herkersdorf, AndreasJob centric monitoring allows to observe jobs on remote computing resources. It may offer visualisation of recorded monitoring data and helps to find faulty or misbehaving jobs. If installations like grids or clouds are observed monitoring data of many thousands of jobs have to be handled. The challenge of job centric monitoring infrastructures is to store, search and access data collected in huge installations like grids or clouds. We take this challenge with a distributed layer based architecture which provides a uniform view to all monitoring data. The concept of this infrastructure called SLAte and an analysis of the scalability is provided in this paper.Conference Paper Adaptive content distribution network for live and on-demand streaming(Gesellschaft für Informatik e.V., 2012) Miyauchi, Yuta; Matsumoto, Noriko; Yoshida, Norihiko; Kamiya, Yuko; Shimokawa, Toshihiko; Mühl, Gero; Richling, Jan; Herkersdorf, AndreasWe have proposed an adaptive content distribution network (CDN), FCAN (Flash Crowds Alleviation Network), which changes its structure dynamically against a flash crowd, that is a rapid increase in server load caused by a sudden access concentration. FCAN in our preceding studies responds only to static content delivery. In this paper, we extend FCAN to alleviate flash crowds in video streaming. Through some experiments, we confirmed that FCAN for video streaming is effective to alleviate flash crowds.Conference Paper Adding low-cost hardware barrier support to small commodity clusters(Gesellschaft für Informatik e.V., 2006) Hoefler, Torsten; Mehlan, Torsten; Mietke, Frank; Rehm, Wolfgang; Karl, Wolfgang; Becker, Jürgen; Großpietsch, Karl-Erwin; Hochberger, Christian; Maehle, ErikConference Paper An anonymous efficient private set intersection protocol for wireless sensor networks(Gesellschaft für Informatik e.V., 2012) Moldovan, George; Ignat, Anda; Mühl, Gero; Richling, Jan; Herkersdorf, AndreasWe present an efficient protocol which, under certain assumptions, provides a suitable level of security and anonymity in the ideal cipher model when computing the intersection of two private data-sets containing lists of elements from a large domain. The assumptions are that each node is pre-loaded with a set of pseudonyms, signed by the network's trusted authority; that the cardinality of each data-set is globally known. Our protocol first establishes a secure, trusted connection between two partners, then uses lightweight, symmetrical key operations for encoding and privately comparing the elements of two sets. Given a cryptographically secure symmetric encryption scheme, our protocol is safe for both semi-honest and malicious adversaries. The primary target platform for this protocol are Wireless Sensor Networks (WSNs), specifically those used in Ambient Assisted Living (AAL) scenarios, which almost entirely consist of a heterogeneous mix of devices, providers and manufacturers.Conference Paper Ant colony optimization for dynamic traveling salesman problems(Gesellschaft für Informatik e.V., 2004) Silva, Carlos A.; Runkler, Thomas A.; Brinkschulte, Uwe; Becker, Jürgen; Fey, Dietmar; Großpietsch, Karl-Erwin; Hochberger, Christian; Maehle, Erik; Runkler, Thomas A.This paper addresses the optimization of a dynamic Traveling Salesman Problem using the Ant Colony Optimization algorithm. Ants are social insects with limited skills that live in colonies able to solve complex problems. The intelligence of the global society arises from self organization mechanisms, based on the indirect communication between individuals through pheromones. The routing problem here presented is a typical case that requires a self organization type of algorithm, in order to cope with the problem dynamics. The simulation results show how the ant colony optimization is able to solve the different possible routing cases.Conference Paper Applications of FPGA reconfiguration for experiments in high energy physics(Gesellschaft für Informatik e.V., 2006) Kebschull, Udo; Karl, Wolfgang; Becker, Jürgen; Großpietsch, Karl-Erwin; Hochberger, Christian; Maehle, ErikConference Paper An approach to molecular electronics by self organization of molecular units(Gesellschaft für Informatik e.V., 2004) Fritzsche, Wolfgang; Brinkschulte, Uwe; Becker, Jürgen; Fey, Dietmar; Großpietsch, Karl-Erwin; Hochberger, Christian; Maehle, Erik; Runkler, Thomas A.Edited Book ARCS 2004 – Organic and pervasive computing(Gesellschaft für Informatik e.V., 2004) Brinkschulte, Uwe; Becker, Jürgen; Fey, Dietmar; Großpietsch, Karl-Erwin; Hochberger, Christian; Maehle, Erik; Runkler, Thomas A.Edited Book ARCS 2012 Workshops(Gesellschaft für Informatik e.V., 2012) Mühl, Gero; Richling, Jan; Herkersdorf, AndreasEdited Book ARCS'06, 19th International Conference on Architecture of Computing Systems(Gesellschaft für Informatik e.V., 2006) Karl, Wolfgang; Becker, Jürgen; Großpietsch, Karl-Erwin; Hochberger, Christian; Maehle, ErikConference Paper ART networks as flexible means to implement dependability properties in autonomous systems(Gesellschaft für Informatik e.V., 2012) Großpietsch, Karl-Erwin; Silayeva, Tanya A.; Mühl, Gero; Richling, Jan; Herkersdorf, AndreasIn this paper, the potential of adaptive resonance theory (ART) networks for dependability issues is considered. The basic properties of ART architectures are described, and some strategies are discussed to enable a balanced combination of performance and dependability requirements by these networks.Conference Paper Aufbau- und Strukturkonzepte einer adaptiven multigranularenrekonfigurierbaren Hardwarearchitektur(Gesellschaft für Informatik e.V., 2004) Thomas, Alexander; Becker, Jürgen; Brinkschulte, Uwe; Becker, Jürgen; Fey, Dietmar; Großpietsch, Karl-Erwin; Hochberger, Christian; Maehle, Erik; Runkler, Thomas A.Moderne Anwendungsszenarien aus den Bereichen der Multimediaanwendungen und Mobilkommunikation verlangen nach immer leistungsfähigeren Datenverarbeitungsarchitekturen mit immenser Rechenleistung, die durch aktuelle Ansätze wie Mikroprozessoren und DSPs nicht ohne weiteres erreichbar sind. Dieser Beitrag beschreibt ein neues Architekturkonzept aus dem Bereich der rekonfigurierbaren Architekturen [Kr01][Be01][XP02] [XI01][AL01][TR02][AT01][QU01][Go01][Ba01][Zh01], die im Rahmen des DFG Schwerpunktprogramms 1148 „Rekonfigurierbare Rechensysteme“ entwickelt werden und auf die Erforschung und Weiterentwicklung der existierenden array-basierten Ansätze gerichtet ist. Die gewonnenen Erfahrungen und Ergebnisse sollen in eine neue adaptive dynamisch rekonfigurierbare Architektur einfließen, die das Ziel dieses Projekts ist.Conference Paper Automated construction of dependability models by aspect-oriented modeling and model transformation(Gesellschaft für Informatik e.V., 2006) Domokos, Péter; Majzik, István; Karl, Wolfgang; Becker, Jürgen; Großpietsch, Karl-Erwin; Hochberger, Christian; Maehle, ErikConference Paper Cellular location determination - reliability and trustworthiness of GSM location data(Gesellschaft für Informatik e.V., 2012) Zahoransky, Richard M.; Rechert, Klaus; Meier, Konrad; Wehrle, Dennis; Suchodoletz, Dirk von; Mühl, Gero; Richling, Jan; Herkersdorf, AndreasWhile using mobile telephony networks, the serving network infrastructure is able to determine the mobile station's location. Until now, cellular telephony has been built on self-contained infrastructure, i.e. all network components have been certified and especially users have been unable to take over control over their mobile equipment's behavior. With the rising awareness on privacy issues, software-based mobile phone network stacks became available and thereby a new freedom degree for mobile subscribers is introduced. While slight modification to the mobile phones behavior will not impair with the general functionality of the network, cellular location determination becomes less reliable and trustworthy. We discuss user imposed measures to detect external location determination attempts and to obfuscate generated location information. With a dedicated testbed setup, the effects of location obfuscation were evaluated.Conference Paper Challenges and trends in the engineering of automotive systems(Gesellschaft für Informatik e.V., 2006) Illgen, Thomas; Ortmann, Stefan; Karl, Wolfgang; Becker, Jürgen; Großpietsch, Karl-Erwin; Hochberger, Christian; Maehle, ErikConference Paper Clock frequency variation of partially reconfigurable systems(Gesellschaft für Informatik e.V., 2006) Dittmann, Florian; Heimfarth, Tales; Karl, Wolfgang; Becker, Jürgen; Großpietsch, Karl-Erwin; Hochberger, Christian; Maehle, ErikConference Paper Combitgen: A new approach for creating partial bitstreams in virtex-II pro devices(Gesellschaft für Informatik e.V., 2006) Claus, Christopher; Müller, Florian Helmut; Stechele, Walter; Karl, Wolfgang; Becker, Jürgen; Großpietsch, Karl-Erwin; Hochberger, Christian; Maehle, ErikConference Paper COMMA: A communications methodology for dynamic module-based reconfiguration of FPGAs(Gesellschaft für Informatik e.V., 2006) Koh, Shannon; Diessel, Oliver; Karl, Wolfgang; Becker, Jürgen; Großpietsch, Karl-Erwin; Hochberger, Christian; Maehle, ErikConference Paper A comparison of parallel programming models of network processors(Gesellschaft für Informatik e.V., 2004) Albrecht, Carsten; Hagenau, Rainer; Maehle, Erik; Döring, Andreas; Herkersdorf, Andreas; Brinkschulte, Uwe; Becker, Jürgen; Fey, Dietmar; Großpietsch, Karl-Erwin; Hochberger, Christian; Maehle, Erik; Runkler, Thomas A.Today's network processor utilize parallel processing in order to cope with the traffic growth and wire-speed of current and future network technologies. In this paper, we study two important parallel programming models for network processors: run to completion and pipelining. In particular, the packet flow of a standard network application, IPv4 Forwarding, through two examined network processors, IBM PowerNP NP4GS3 and Intel IXP1200, is reviewed and characterized in respect to their programming models. Based on a benchmark for PC-cluster SANs, their application throughput and latency for Gigabit Ethernet is investigated and compared to a commercial, ASIC-based switch. It is shown that in this scenario network processors can compete with hard-wired solutions.Conference Paper Complementary circuits for on-line detection for 1-out-of-3 codes(Gesellschaft für Informatik e.V., 2004) Morozov, A.; Saposhnikov, V. V.; Saposhnikow, Vl. V.; Gössel, M.; Brinkschulte, Uwe; Becker, Jürgen; Fey, Dietmar; Großpietsch, Karl-Erwin; Hochberger, Christian; Maehle, Erik; Runkler, Thomas A.In this paper a new method for concurrent checking of an arbitrarily given combinational multi-output circuit f by use of an 1-out-of-3 code is presented. The circuit f is completed by an additional multi-output circuit g in such a way that the XOR-sums of the corresponding outputs of f or of the inverted outputs of f and g are elements of a 1-out-of-3 code. For efficiently checking the 1-out-of-3 encoded outputs also a new self-checking checker based on a three-rail checker cell is proposed. Index Terms: 1-out-of-3 code, on-line error detection, complementary circuit, totally self-checking 1-out-of-3 code checker.