TY - CHAP A1 - Nolte, Jörg A1 - Schröder-Preikschat, Wolfgang T1 - Dual Objects - An Object Model for Distributed System Programming T2 - Proceedings of the 8th ACM SIGOPS European workshop on Support for composing distributed applications Y1 - 1998 SP - 261 EP - 267 PB - ACM Digital Library CY - New York, NY ER - TY - GEN A1 - Cordsen, J. A1 - Nolte, Jörg A1 - Schröder-Preikschat, Wolfgang T1 - Experiences Developing a Virtual Shared Memory System using Hig-Level Object Paradigms T2 - Object oriented programming, 12th European conference, proceedings, ECOOP '98, Brussels, Belgium, July 20 - 24, 1998 Y1 - 1998 SN - 3-540-64737-6 SP - 285 EP - 306 PB - Springer CY - Berlin [u.a.] ER - TY - GEN A1 - Nolte, Jörg T1 - A Topology Based Approach to Coordinated Multicast Operations T2 - Parallel and distributed processing, 10 IPPS/SPDP '98, Orlando, Florida, USA, March 30 - April 3, 1998, proceedings Y1 - 1998 SP - 195 EP - 206 PB - Springer CY - Berlin [u.a.] ER - TY - CHAP A1 - Büttner, J. A1 - Nolte, Jörg T1 - ARTS: Flexible Runtime Support for Massively Parallel Systems Y1 - 1997 ER - TY - GEN A1 - Nolte, Jörg A1 - Konaka, Hiroki A1 - Hori, Atsushi A1 - Ishikawa, Yutaka A1 - Maeda, Munenori A1 - Tomokiyo, Takashi ED - Futatsugi, Kokichi T1 - Ocore and VAST - Integrating Persistence into a Parallel Object-Oriented Language T2 - Object technologies for advanced software, proceedings, ISOTAS '96, Kanazawa, Japan, March 11 - 15, 1996 Y1 - 1996 SN - 3-540-60954-7 SP - 260 EP - 274 PB - Springer CY - Berlin ER - TY - GEN A1 - Mank, Stephan A1 - Karnapke, Reinhardt A1 - Nolte, Jörg T1 - MLMAC-UL and ECTS-MAC - Two MAC Protocols for Wireless Sensor Networks with Unidirectional Links T2 - Third International Conference on Sensor Technologies and Applications, 2009, SENSORCOMM '09 ; 18 - 23 June 2009, Athens/Glyfada, Greece Y1 - 2009 SN - 978-0-7695-3669-9 SP - 623 EP - 629 PB - IEEE CY - Piscataway, NJ ER - TY - GEN A1 - Höckner, Sören A1 - Lagemann, Andreas A1 - Nolte, Jörg T1 - Integration of Event-Driven Embedded Systems INto OMNeT++ - A Case Study with REFLEX T2 - SIMUTools'09, proceedings cd of the 2nd International Conference on Simulation Tools and Techniques, March 2 - 6, 2009, Rome, Italy Y1 - 2009 SN - 978-963-9799-45-5 PB - ACM Press CY - New York, NY ER - TY - GEN A1 - Mank, Stephan A1 - Karnapke, Reinhardt A1 - Nolte, Jörg T1 - MAC Protocols for Wireless Sensor Networks: Tackling the Problem of Unidirectional Links T2 - International journal on advances in networks and services Y1 - 2009 SN - 1942-2644 VL - 2 IS - 4 SP - 218 EP - 229 ER - TY - JOUR A1 - Nolte, Jörg A1 - Sato, Mitsuhisa A1 - Ishikawa, Yutaka T1 - Exploiting Cluster Networks for Distributed Object Groups and Collective Operations Y1 - 2002 ER - TY - JOUR A1 - Nolte, Jörg A1 - Ishikawa, Yutaka A1 - Sato, Mitsuhisa T1 - TACO - Prototyping High-Level Object-Oriented Programming Constructs by Means of Template Based Programming Techniques Y1 - 2001 ER - TY - JOUR A1 - Nolte, Jörg A1 - Horton, Paul T1 - Parallel Sequence Matching with TACO's Distributed Object Groups : a Case Study from Molecular Biology JF - Cluster Computing Y1 - 2001 SN - 1386-7857 VL - 4 IS - 1 SP - 71 EP - 77 ER - TY - JOUR A1 - Büttner, L. A1 - Nolte, Jörg A1 - Schröder-Preikschat, Wolfgang T1 - ARTS of PEACE - A High-Performance Middleware Layer for Parallel and Disributed Computing Y1 - 1999 ER - TY - GEN A1 - Nolte, Jörg A1 - Sato, Mitsuhisa A1 - Ishikawa, Yutaka T1 - TACO - Exploiting Cluster Networks for High-Level Collective Operations T2 - Proceedings, First IEEE/ACM International Symposium on Cluster Computing and the Grid, Brisbane, Australia, May 15 - 18, 2001 Y1 - 2001 SN - 0-7695-1010-8 SP - 253 EP - 260 PB - IEEE Computer Soc. CY - Los Alamitos, Calif. [u.a.] ER - TY - GEN A1 - Nolte, Jörg A1 - Sato, Mitsuhisa A1 - Ishikawa, Yutaka T1 - Parallel Programming with Distributed Object Groups - the TACO Approach Y1 - 2000 ER - TY - GEN A1 - Nolte, Jörg A1 - Sato, Mitsuhisa A1 - Ishikawa, Yutaka T1 - TACO - Dynamic Distributed Collections with Templates and Topologies T2 - European Conference on Parallel Computing, Euro-Par 2000, München, Germany Y1 - 2000 SN - 3-540-67956-1 SP - 1071 EP - 1081 PB - Springer CY - Berlin [u.a.] ER - TY - CHAP A1 - Nolte, Jörg T1 - Towards a Persistence Framework for High Performance Computing Systems T2 - Real World Computing Partnership, Japan, 1995, Technical Report TR-95007 Y1 - 1995 ER - TY - BOOK A1 - Nolte, Jörg T1 - Language-level support for remote object invocations Y1 - 1992 PB - GMD CY - Sankt Augustin ER - TY - CHAP A1 - Berg, R. A1 - Cordsen, J. A1 - Heuer, J. A1 - Nolte, Jörg A1 - Oestmann, B. A1 - Sander, M. A1 - Schmidt, Heiko A1 - Schön, F. A1 - Schröder-Preikschat, Wolfgang T1 - The PEACE Family of Distributed Operating Systems Y1 - 1991 ER - TY - CHAP A1 - Berg, R. A1 - Cordsen, J. A1 - Hastedt, Ch. A1 - Heuer, J. A1 - Nolte, Jörg A1 - Sander, M. A1 - Schmidt, Heiko A1 - Schön, F. A1 - Schröder-Preikschat, Wolfgang T1 - Making Massively Parallel Systems Work Y1 - 1991 ER - TY - CHAP A1 - Heuer, J. A1 - Nolte, Jörg A1 - Sander, M. A1 - Schön, F. A1 - Schröder-Preikschat, Wolfgang T1 - Making Massively Parallel Systems Fast Y1 - 1990 ER - TY - CHAP A1 - Eichler, L. A1 - Nolte, Jörg A1 - Patzelt, Th. A1 - Schön, F. A1 - Schröder, W. A1 - Seidel, W. T1 - Communication and Management Protocols for the Distributed PEACE Operating System T2 - GMD FIRST an der TU Berlin, Technical report, Contract TR-8502-A-2 Y1 - 1987 PB - GMD CY - Sankt Augustin ER - TY - THES A1 - Nolte, Jörg T1 - Duale Objekte - Ein Modell zur objektorientierten Konstruktion von Programmfamilien für massiv parallele Systeme Y1 - 1994 SN - 3-486-23097-2 PB - Oldenbourg CY - München ER - TY - CHAP A1 - Ishikawa, Yutaka A1 - Hori, Atsushi A1 - Tezuka, H. A1 - Matsuda, M. A1 - Konaka, Hiroki A1 - Maeda, Munenori A1 - Tomokiyo, Takashi A1 - Nolte, Jörg ED - Wilson, Gregory V. T1 - MPC++ T2 - Parallel programming using C++ Y1 - 1996 SN - 0-262-73118-5 SP - 429 EP - 464 PB - MIT Press CY - Cambridge ER - TY - GEN A1 - Nolte, Jörg A1 - Yutaka, I. A1 - Mitsuhisa, S. T1 - TACO - Prototyping High-Level Object-Oriented Programming Constructs by Means of Template Based Programming Techniques T2 - Proceedings of the 16th ACM SIGPLAN conference on Object-oriented programming, systems, languages, and applications, OOPSLA 2001 Y1 - 2001 PB - ACM CY - New York, NY ER - TY - GEN A1 - Sieber, André A1 - Walther, Karsten A1 - Nürnberger, Stefan A1 - Nolte, Jörg T1 - Implicit Sleep Mode Determination in Power Management of Event-driven Deeply Embedded Systems T2 - Wired, wireless internet communications, 7th international conference, proceedings, WWIC 2009, Enschede, The Netherlands, May 27 - 29, 2009 Y1 - 2009 SN - 978-3-642-02117-6 SP - 13 EP - 23 PB - Springer CY - Berlin [u.a.] ER - TY - GEN A1 - Nürnberger, Stefan A1 - Karnapke, Reinhardt A1 - Nolte, Jörg T1 - Sensorium - An Active Monitoring System for Neighborhood Relations in Wireless Sensor Networks T2 - Ad hoc networks, second international conference, revised selected papers, ADHOCNETS 2010, Victoria, BC, Canada, August 18 - 20, 2010 Y1 - 2010 SN - 978-3-642-17993-8 SP - 34 EP - 48 PB - Springer CY - Berlin [u.a.] ER - TY - CHAP A1 - Lagemann, Andreas A1 - Nolte, Jörg A1 - Weyer, Christoph A1 - Turau, Volker T1 - Mission Statement: Applying Self-Stabilization to Wireless Sensor Networks Y1 - 2009 ER - TY - GEN A1 - Sieber, André A1 - Karnapke, Reinhardt A1 - Nolte, Jörg A1 - Martschei, Thomas T1 - Using Sensor Technology to Protect an Endangered Species: A Case Study T2 - 2011 IEEE 36th Conference on Local Computer Networks (LCN), Bonn, Germany, 4 - 7 October 2011, vol. 2 Y1 - 2011 SN - 978-1-61284-926-3 SP - 1044 EP - 1047 PB - IEEE ER - TY - GEN A1 - Prescher, Thomas A1 - Rotta, Randolf A1 - Nolte, Jörg T1 - Flexible Sharing and Replication Mechanisms for Hybrid Memory Architectures T2 - Proceedings of the 4th Many-Core Applications Research Community (MARC) Symposium Y1 - 2011 SN - 978-3-86956-169-1 SP - 67 EP - 72 PB - Univ.-Verl. CY - Potsdam ER - TY - CHAP A1 - Sieber, André A1 - Nolte, Jörg T1 - Utilizing Voltage Decline for Reaching Lifetime Goals T2 - Proceedings of the 10. GI/ITG KuVS Fachgespraech Drahtlose Sensornetze (FGSN 2011), Paderborn, Germany, September 2011 N2 - The battery dictates the lifetime of many embedded systems, especially wireless sensor networks.This makes it necessary to deal with battery management.In this paper we present an approach for a battery management which enables a sensor node to reach a defined lifetime.The presented approach gives feedback to an energy manager if the current power consumption must be lowered or can be increased to reach the runtime goal.In contrast to other systems the battery is handled as black box to keep the system independent from the battery type and brand.First experiments yield promising results of this concept to reach a certain lifetime goal while maintaining a high application quality. KW - wireless sensor networks KW - embedded systems KW - energy KW - battery managment KW - life-time goals Y1 - 2011 N1 - Technical Report TR-RI-11-313 SP - 57 EP - 60 ER - TY - GEN A1 - Rotta, Randolf A1 - Prescher, Thomas A1 - Traue, Jana A1 - Nolte, Jörg T1 - Data Sharing Mechanisms for Parallel Graph Algorithms on the Intel SCC T2 - MARC Symposium at ONERA'2012, July 19th–20th 2012, Toulouse, Frankreich Y1 - 2012 UR - http://hal.archives-ouvertes.fr/hal-00718993 SN - 978-2-7257-0016-8 N1 - Best Paper Award 2012 SP - 13 EP - 18 ER - TY - GEN A1 - Rotta, Randolf A1 - Büchner, Steffen A1 - Nolte, Jörg T1 - Middleware for Many-Cores - Why It Is Needed and What Functionality It Should Provide T2 - 4th USENIX Workshop on Hot Topics in Parallelism (HotPar '12), Berkeley, 2012 N2 - Today's multi-cores and future many-cores are NUMA architectures with complex cache hierarchies and multiple memory channels. Depending on the topologies of these memory networks we find everything from true data sharing with shared caches to distributed memory architectures which just pretend to be physical shared memory systems. In fact, most many-cores are hybrid systems that exhibit the characteristics of both distributed systems and SMPs. In this paper we argue in favor of middleware platforms for many-cores. We will discuss the needed functionality in contrast to common distributed system middleware and present micro benchmarks on several architectures to substantiate our claims. Y1 - 2012 UR - https://www.usenix.org/conference/hotpar12/tech-schedule/poster-session ER - TY - GEN A1 - Rotta, Randolf A1 - Prescher, Thomas A1 - Traue, Jana A1 - Nolte, Jörg T1 - In-Memory Communication Mechanisms for Many-Cores – Experiences with the Intel SCC T2 - TACC-Intel Highly Parallel Computing Symposium (TIHPCS), Austin/Texas, 2012 N2 - Many-core processors combine fast on-chip communication with access to large amounts of shared memory. This makes it possible to exploit the benefits of distributed as well as shared memory programming models within single parallel algorithms. While large amounts of data can be shared in the memory and caches, coordinating the activities of hundreds of cores relies on cross core communication mechanisms with ultra low latency for very small messages. In this paper we discuss two communication protocols for the Intel SCC and compare them to the MPI implementation of the SCC. Our micro-benchmark results underline that special purpose protocols for small messages make much finer levels of parallelism possible than general purpose message passing systems. Index Terms—many-core, message passing, shared memory Y1 - 2012 UR - http://www.tacc.utexas.edu/documents/13601/4234acca-2171-4465-aa48-7592d5e577f9 UR - http://www.tacc.utexas.edu/documents/13601/06d702ab-3f48-4942-9b07-2fbd880d4310 UR - http://www.tacc.utexas.edu/ti-hpcs12 ER - TY - GEN A1 - Lohs, Stefan A1 - Karnapke, Reinhardt A1 - Nolte, Jörg T1 - Link stability in a wireless sensor network - an experimental study T2 - Sensor systems and software, third international ICST conference, revised selected papers, Lisbon, Portugal, June 4 - 5, 2012 KW - wireless sensor networks, link stability, unidirectional links Y1 - 2012 SN - 978-3-642-32777-3 SP - 146 EP - 163 PB - Springer CY - Heidelberg [u.a.] ER - TY - GEN A1 - Lohs, Stefan A1 - Karnapke, Reinhardt A1 - Nolte, Jörg A1 - Lagemann, Andreas T1 - Self-stabilizing Sensor Networks for Emergency Management T2 - Second Workshop on Pervasive Networks for Emergency Management, Lugano, Switzerland, March 2012 KW - Wireless Sensor Networks KW - Fault Tolerance KW - Selfstabilization Y1 - 2012 SN - 978-1-4673-0905-9 SN - 978-1-4673-0906-6 SP - 721 EP - 726 PB - IEEE CY - Piscataway, NJ ER - TY - CHAP A1 - Sieber, André A1 - Nolte, Jörg T1 - Device Management for Limiting the Load Applied to Batteries T2 - Technical Report SEEMOO-TR-2012-03, 11. Fachgespräch Sensornetze der GI/ITG Fachgruppe Kommunikation und Verteilte Systeme, 13.-14. September 2012, Technische Universität Darmstadt Y1 - 2012 UR - http://www.seemoo.tu-darmstadt.de/dl/seemoo/seemoo-tr-2012-03.pdf SP - 15 EP - 18 PB - Technische Universität CY - Darmstadt ER - TY - CHAP A1 - Traue, Jana A1 - Karnapke, Reinhardt A1 - Nolte, Jörg T1 - From Parallel Systems to Wireless Sensor Networks and Back T2 - Technical Report SEEMOO-TR-2012-03, 11. Fachgespräch Sensornetze der GI/ITG Fachgruppe Kommunikation und Verteilte Systeme, 13.-14. September 2012, Technische Universität Darmstadt Y1 - 2012 UR - http://www.seemoo.tu-darmstadt.de/dl/seemoo/seemoo-tr-2012-03.pdf SP - 29 EP - 32 PB - Technische Universität CY - Darmstadt ER - TY - CHAP A1 - Lohs, Stefan A1 - Nolte, Jörg A1 - Siegemund, Gerry A1 - Turau, Volker T1 - Mission Statement: ToleranceZone : A Self-Stabilizing Middleware for Wireless Sensor Netzworks T2 - Technical Report SEEMOO-TR-2012-03, 11. Fachgespräch Sensornetze der GI/ITG Fachgruppe Kommunikation und Verteilte Systeme, 13.-14. September 2012, Technische Universität Darmstadt Y1 - 2012 UR - http://www.seemoo.tu-darmstadt.de/dl/seemoo/seemoo-tr-2012-03.pdf SP - 33 EP - 35 PB - Technische Universität CY - Darmstadt ER - TY - GEN A1 - Siegemund, Gerry A1 - Turau, Volker A1 - Weyer, Christoph A1 - Lohs, Stefan A1 - Nolte, Jörg T1 - An Agile and Stable Neighborhood Protocol for WSNs T2 - Stabilization, Safety, and Security of Distributed Systems, 15th International Symposium, SSS 2013, Osaka, Japan, November 13-16, 2013 KW - WSN, Self-Stabilization, Neighborhood Y1 - 2013 SN - 978-3-319-03089-0 U6 - https://doi.org/10.1007/978-3-319-03089-0_35 SP - 376 EP - 378 PB - Springer CY - Cham ER - TY - GEN A1 - Lohs, Stefan A1 - Karnapke, Reinhardt A1 - Nolte, Jörg T1 - ToleranceZone - A Self-Stabilizing Middleware for Wireless Sensor Networks Y1 - 2013 UR - http://ewsn13.intec.ugent.be/content/posters N1 - EWSN 2013, 10th European Conference on Wireless Sensor Networks, Ghent, February 13-15, 2013 ER - TY - GEN A1 - Karnapke, Reinhardt A1 - Nolte, Jörg T1 - Buckshot Routing with Distance Vectors in Three Application Scenarios for Wireless Sensor Networks with Unstable Network Topologies and Unidirectional Links T2 - Journal on Sensors and Transducers N2 - Experiments have shown that the number of asymmetric and unidirectional links often exceeds the number of bidirectional ones, especially in the transitional area of the communication range of wireless sensor nodes. Still, most of today’s routing protocols ignore their existence or try to remove their implications. Also, links are not stable over time, and routes become unusable often, resulting in a need for new routing protocols that can handle highly dynamic links and use unidirectional links to their advantage. At Sensorcomm 2014, we presented BuckshotDV, a routing protocol which is resilient against link fluctuations and uses the longer reach of unidirectional links to increase its performance. Furthermore, its distance vector nature makes it scalable for large sensor networks. This paper is an extended version which adds some implementation details and the evaluation of BuckshotDV in two more application scenarios. Y1 - 2015 SN - 1726-5479 SN - 2306-8515 VL - 185 IS - 2 SP - 53 EP - 67 ER - TY - GEN A1 - Karnapke, Reinhardt A1 - Nolte, Jörg T1 - BuckshotDV - A robust Routing Protocol for Wireless Sensor Networks with unstable Network Topologies and Unidirectional Links T2 - SENSORCOMM 2014, The Eighth International Conference on Sensor Technologies and Applications, Lisbon, Portugal N2 - Experiments have shown that the number of asym- metric and unidirectional links often exceeds the number of bidirectional ones, especially in the transitional area of the communication range of wireless sensor nodes. Still, most of today’s routing protocols ignore their existence or try to remove their implications. Also, links are not stable over time, and routes become unusable often, resulting in a need for new routing protocols that can handle highly dynamic links and use unidirectional links to their advantage. In this paper, we present BuckshotDV, a routing protocol which is resilient against link fluctuations and uses the longer reach of unidirectional links to increase its performance. Furthermore, its distance vector nature makes it scalable for large sensor networks. Y1 - 2014 SN - 978-1-61208-374-2 SP - 60 EP - 65 PB - IARIA ER - TY - GEN A1 - Karnapke, Reinhardt A1 - Nolte, Jörg T1 - Triangle Routing in Wireless Sensor Networks with Unidirectional Links Revisited - a Look at Different Scenarios T2 - International Journal on Advances in Networks and Services N2 - Experiments with wireless sensor networks have shown that links are often asymmetric or unidirectional. This represents a serious problem for many routing protocols, which often depend on bidirectional links. Routing protocols that can use unidirectional links often induce a high overhead. To overcome this problem we introduced Unidirectional Link Triangle Routing, a routing protocol, which uses neighborhood information, gathered actively or passively, to route around unidirectional links. In this paper, we describe Unidirectional Link Triangle Routing in further detail and present additional evaluation results from different application scenarios. Y1 - 2014 SN - 1942-2644 VL - 17 IS - 1/2 SP - 72 ER - TY - GEN A1 - Karnapke, Reinhardt A1 - Nolte, Jörg T1 - Unidirectional Link Triangle Routing for Wireless Sensor Networks T2 - SENSORCOMM 2013, The Seventh International Conference on Sensor Technologies and Applications, Barcelona, Spain N2 - Experiments with wireless sensor networks have shown that asymmetric and unidirectional links do not only exist, but are indeed quite common. Still, many people argue that the gain in connectivity is not worth the effort of making them usable for routing protocols. In this paper, we follow the opposite approach and introduce Unidirectional Link Triangle Routing, which reduces the overhead and, therefore, makes unidirectional links usable on the routing layer. Y1 - 2013 SN - 978-1-61208-296-7 SP - 7 EP - 14 PB - IARIA ER - TY - GEN A1 - Lopacinski, Lukasz A1 - Nolte, Jörg A1 - Büchner, Steffen A1 - Brzozowski, Marcin A1 - Kraemer, Rolf T1 - Design and Implementation of an Adaptive Algorithm for Hybrid Automatic Rrepeat Request T2 - 18th International Symposium on Design and Diagnostics of Electronic Circuits & Systems (DDECS), Belgrade/Serbia, 2015 KW - Adaptive Hybrid Automatic Repeat Request Y1 - 2015 UR - http://ieeexplore.ieee.org/xpls/abs_all.jsp?arnumber=7195708&tag=1 U6 - https://doi.org/10.1109/DDECS.2015.32 SP - 263 EP - 266 PB - IEEE ER - TY - GEN A1 - Menzel, Hannes A1 - Karnapke, Reinhardt A1 - Büchner, Steffen A1 - Nolte, Jörg T1 - Applying Wireless Sensor Networks to Renaturation Monitoring: From Requirements to Deployment T2 - IFIP Wireless Days (WD) 2014, Rio/Brasil KW - Wireless Sensor Networks KW - Chicken Creek KW - Sens4U Y1 - 2014 U6 - https://doi.org/http://dx.doi.org/10.1109/WD.2014.7020825 PB - IEEE ER - TY - CHAP A1 - Siegemund, Gerry A1 - Turau, Volker A1 - Lohs, Stefan A1 - Nolte, Jörg T1 - Directed Link Utilization with Mahalle+ T2 - 12. GI-ITG Fachgespräch Sensornetze Y1 - 2013 SP - 29 EP - 32 PB - Brandenburg University of Technology CY - Cottbus ER - TY - GEN A1 - Karnapke, Reinhardt A1 - Lohs, Stefan A1 - Nolte, Jörg ED - Kanjo, Eiman ED - Trossen, Dirk T1 - How to ruin Sensor Network Performance using Duplicate Suppression T2 - Sensor Systems and Software, 5th International Conference, S-CUBE 2014, Coventry, UK, October 6-7, 2014, Revised Selected Papers Y1 - 2015 SN - 978-3-319-17135-7 SN - 978-3-319-17136-4 SP - 20 EP - 29 PB - Springer CY - Cham ER - TY - GEN A1 - Karnapke, Reinhardt A1 - Lohs, Stefan A1 - Lagemann, Andreas A1 - Nolte, Jörg T1 - Simulation of Unidirectional Links in Wireless Sensor Networks T2 - Proceedings of the 7th International ICST Conference on Simulation Tools and Techniques, SIMUTools '14 Y1 - 2014 SN - 978-1-63190-007-5 SP - 118 EP - 125 PB - ICST CY - Brüssel ER - TY - GEN A1 - Beyer, Sandra A1 - Lohs, Stefan A1 - Nolte, Jörg A1 - Karnapke, Reinhardt A1 - Siegemund, Gerry T1 - Self-Stabilizing Structures for Data Gathering in Wireless Sensor Networks T2 - SENSORCOMM 2015, The Ninth International Conference on Sensor Technologies and Applications, August 23-28, 2015 Venice, Italy Y1 - 2015 SN - 978-1-61208-425-1 SP - 71 EP - 76 PB - IARIA ER - TY - GEN A1 - Büchner, Steffen A1 - Nolte, Jörg A1 - Kraemer, Rolf A1 - Lopacinski, Lukasz A1 - Karnapke, Reinhardt T1 - Challenges for 100 Gbit/s End to End Communication: Increasing Throughput Through Parallel Processing T2 - 40th Annual IEEE Conference on Local Computer Networks, 2015, Clearwater Beach Florida N2 - Today's applications and services become more dependent on fast wireless communication, for the upcoming years data-rate demands of 100Gbit/s can be easily expected. However, fulfilling that demand is a task which cannot simply be solved by upscaling existing technologies. While most of the research tackles the challenges regarding the transmission technology from the physical layer up to base-band processing, we focus on the challenges concerning the handling of that vast amount of data. The overall goal is to bring together the transmission technology with the operating system to create a suitable end-to-end communication solution. In this paper we argue that communication can be understood as a soft-realtime problem and how that helps introducing parallelism into protocol-processing. KW - End2End100, ultra high speed wireless communication, soft real time stream processing Y1 - 2015 UR - http://ieeexplore.ieee.org/xpl/articleDetails.jsp?arnumber=7366337&tag=1 SN - 978-1-4673-6770-7 U6 - https://doi.org/10.1109/LCN.2015.7366337 SP - 398 EP - 401 PB - IEEE CY - Piscataway, NJ ER - TY - GEN A1 - Lopacinski, Lukasz A1 - Nolte, Jörg A1 - Büchner, Steffen A1 - Brzozowski, Marcin A1 - Kraemer, Rolf T1 - Parallel RS Error Correction Structures Dedicated for 100 Gbps Wireless Data Link Layer T2 - 15th IEEE International Conference on Ubiquitous Wireless Broadband 2015: Special Session on Wireless Terahertz Communications (IEEE ICUWB 2015 SPS 02), Montreal, 2015 KW - Parallel Reed-Solomon Error Correction KW - 100 Gbit/s Wireless KW - Data Link Layer KW - Parallel Processing Y1 - 2015 UR - http://ieeexplore.ieee.org/xpl/articleDetails.jsp?reload=true&arnumber=7324494 U6 - https://doi.org/10.1109/ICUWB.2015.7324494 SP - 1 EP - 6 PB - IEEE ER - TY - GEN A1 - Lopacinski, Lukasz A1 - Brzozowski, Marcin A1 - Kraemer, Rolf A1 - Nolte, Jörg A1 - Büchner, Steffen T1 - 100 Gbps Wireless - Data Link Layer VHDL Implementation T2 - Measurement Automation Monitoring KW - 100 Gbit/s wireless KW - Data Link Layer KW - VHDL Y1 - 2015 UR - http://pak.info.pl/index.php?menu=artykulSzczegol&idArtykul=4400 SN - 0032-4140 VL - 61 IS - 7 SP - 333 EP - 336 ER - TY - GEN A1 - Lopacinski, Lukasz A1 - Brzozowski, Marcin A1 - Kraemer, Rolf A1 - Nolte, Jörg A1 - Büchner, Steffen T1 - Design and performance measurements of an FPGA accelerator for a 100Gbps wireless data link layer T2 - Radio Science Conference (URSI AT-RASC), 16-24 May 2015, Gran Canaria, Spain Y1 - 2015 UR - http://ieeexplore.ieee.org/xpls/abs_all.jsp?arnumber=7302966 SN - 978-1-4799-6871-8 U6 - https://doi.org/10.1109/URSI-AT-RASC.2015.7302966 PB - IEEE CY - Piscataway, NJ ER - TY - GEN A1 - Traue, Jana A1 - Nolte, Jörg A1 - Engel, Philipp A1 - Karnapke, Reinhardt T1 - Using Emulation Software to Predict the Performance of Algorithms on NVRAM T2 - Proceedings of the 7th International ICST Conference on Simulation Tools and Techniques, SIMUTools '14 N2 - Currently, new storage technologies which unite the latency and byte-addressability of DRAM with the persistence of disks are being developed. This non-volatile memory (NVRAM) may start a software revolution. Traditionally, software was developed for two levels of storage and NVRAM reduces the hierarchy to a single-level store. Current research projects are already exploring the potential of NVRAM, but they face a challenge when they want to evaluate the performance: The new hardware is not yet available. In this paper, we discuss why benchmark results which are gained on existing DRAM are insufficient for a prediction of the performance on NVRAM. Either existing instructions have to be changed or new ones have to be introduced. We further show that the bochs emulator can be used to build systems which resemble NVRAM, to predict the NVRAM's consequences, and it even allows a comparison of algorithms for NVRAM. KW - Emulation KW - non-volatile memory Y1 - 2014 SN - 978-1-63190-007-5 U6 - https://doi.org/10.4108/icst.simutools.2014.254796 SP - 142 EP - 146 PB - ICST CY - Brüssel ER - TY - GEN A1 - Rotta, Randolf A1 - Traue, Jana A1 - Prescher, Thomas A1 - Nolte, Jörg T1 - Interrupt-Driven Cross-Core Invocation Mechanisms on the Intel SCC T2 - Proceedings of the Many-core Applications Research Community (MARC) Symposium at RWTH Aachen University 2012 N2 - On many-core processors, both operating system kernels and bare metal applications need efficient cross-core coordination and communication. Although explicit shared- memory programming and message passing might provide the best performance, they also limit the system’s control over scheduling. In contrast, interrupt-driven cross-core invocations provide universal coordination mechanisms that also enable preemptive operations across cores. This paper surveys cross- core invocation mechanisms and their usability with respect to prevalent coordination scenarios. We integrated some of these mechanisms into a bare-metal environment for the Intel SCC pro- cessor and will discuss implementation aspects of the interrupt- driven invocations. In conclusion, such invocation mechanisms provide an expressive platform for future operating systems kernels and bare-metal applications. KW - many-core KW - remote invocations KW - bare-metal Y1 - 2012 SN - 978-3-00-039545-1 SP - 1 EP - 6 PB - Technische Hochschule CY - Aachen ER - TY - GEN A1 - Sieber, André A1 - Nolte, Jörg A1 - Karnapke, Reinhardt T1 - Using Energy Budgets to Reach Lifetime Goals while Compensating Dynamic Effects T2 - SENSORCOMM 2015, The Ninth International Conference on Sensor Technologies and Applications, August 23-28, 2015 Venice, Italy N2 - Nodes within sensor networks often have tight bound goals for the lifetime while running from a non-renewable energy source. Variations within the hardware or induced by the software complicate the prediction of the energy consumption. Additionally, batteries are vulnerable to temperature and non-linear effects. To reach certain lifetime goals under these influences without sacrificing energy due to pessimistic estimations, online energy management is necessary. In this paper, we present policies to control the behavior of applications and devices using energy budgets. First experiments yield promising results, with nodes reaching their lifetime goals while maintaining a high application quality. KW - Wireless Sensor Networks KW - Energy Management KW - Lifetime Goals Y1 - 2015 SN - 978-1-61208-425-1 SP - 7 EP - 13 PB - IARIA ER - TY - GEN A1 - Sieber, André A1 - Nolte, Jörg T1 - Online device-level energy accounting for wireless sensor nodes T2 - Wireless Sensor Networks, Proceedings of the 10th European conference on Wireless Sensor Networks, Ghent, Belgien, 2013 N2 - Energy is the crucial factor for the lifetime of wireless sensor networks. Nonlinear battery effects and nonuniform workload distribution can lead to early node failures. This makes it necessary to manage energy consumption. But to manage energy it is essential to know how much energy is spent by the system. Additionally, for a more fine-grained management it is necessary, to know where the energy is spent. This can be a complicated task, since nodes are not identical due to device variations and the consumption can change over time. In this paper we present an online energy accounting approach which focuses on simplicity instead on fine granularity and timing accuracy. We argue that the efficacy of an energy accounting model depends more on the input consumption data than on exact timing, especially when the real consumption varies between nodes and in time. Results show that this approach is capable of correctly accounting the energy that nodes spend in scenarios with deviating environment conditions. KW - Energy accounting KW - Energy measurements KW - Wireless sensor networks Y1 - 2013 SN - 978-3-642-36672-7 SP - 149 EP - 164 PB - Springer CY - Berlin [u.a] ER - TY - GEN A1 - Sieber, André A1 - Nolte, Jörg T1 - Datasheet vs. Real World: A Look on Sensor Node Energy Consumption T2 - 2012 IEEE International Conference on Green Computing and Communications (GreenCom), Besancon, France, 20 - 23 November 2012 N2 - Energy and run time are mayor concerns in wireless sensor networks. Reliable information about the energy consumption is needed to be able to build a network and tune its application. In this paper we take a look on the energy consumption of the Texas Instruments eZ430-Chronos, an MSP430 based wireless sensor node, and compare it to the manufacturers datasheet. The measurements show how reliable these specifications are and which consequences should be taken. KW - Energy measurments KW - Wireless sensor networks Y1 - 2012 SN - 978-1-4673-5146-1 SP - 641 EP - 643 PB - IEEE CY - Piscataway, NJ ER - TY - CHAP A1 - Sieber, André A1 - Karnapke, Reinhardt A1 - Nolte, Jörg T1 - From Energy Accounting to Energy Management T2 - 13. GI/ITG Fachgespräch Sensornetze, 25. und 26. September 2014 an der Universität Potsdam N2 - Embedded systems, e.g. nodes within sensor networks, often have tight bound goals for lifetime while running from a not renewable energy source. Mostly batteries are used, which are vulnerable to temperature and non-linear effects. Additionally, variations within the hardware or induced by the software make the prediction of the available and consumed energy a complicated task. To reach certain lifetime goals under these influences, online energy management is necessary. For a fine-grained management on the level of individual sub-tasks, it is necessary to know where in the system the energy is consumed. In this work, we extend our online energy accounting approach to enable online energy management. We present ways to control application and device behavior, and, thus, energy using energy budgets. First experiments yield promising results, reaching their lifetime goals while maintaining a high application quality. KW - Energy accounting KW - Energy management KW - Wireless sensor networks Y1 - 2014 SP - 25 EP - 28 PB - Universität CY - Potsdam ER - TY - GEN A1 - Sieber, André A1 - Nolte, Jörg A1 - Karnapke, Reinhardt T1 - Compensating Dynamic Effects with Budget-based Energy Management to Reach Lifetime Goals T2 - Sensors & Transducers N2 - Nodes within sensor networks often have tight bound goals for the lifetime while running from a non-renewable energy source. Variations within the hardware or induced by the software complicate the prediction of the energy consumption. Additionally, batteries are vulnerable to temperature and non-linear effects. To reach certain lifetime goals under these influences without sacrificing energy due to pessimistic estimations, online energy management is necessary. At Sensorcomm 2015 we presented policies to control the behavior of applications and devices using energy budgets. This paper is an extended version which adds further details and the evaluation of the proposed dynamic energy management in a real-world scenario. KW - Wireless Sensor Networks KW - Energy Management KW - Lifetime Goals Y1 - 2015 SN - 2306-8515 VL - 194 IS - 11 SP - 22 EP - 34 ER - TY - CHAP A1 - Beyer, Sandra A1 - Lohs, Stefan A1 - Karnapke, Reinhardt A1 - Nolte, Jörg T1 - Self-Stabilizing Aggregation- and Reduction-Structures for Wireless Sensor Networks T2 - 13. GI/ITG Fachgespräch Sensornetze, 25. und 26. September 2014 an der Universität Potsdam Y1 - 2014 SP - 13 EP - 16 PB - Universität CY - Potsdam ER - TY - GEN A1 - Nürnberger, Stefan A1 - Rotta, Randolf A1 - Drescher, Gabor A1 - Danner, Daniel A1 - Nolte, Jörg T1 - Diamond Rings: Acknowledged Event Propagation in Many-Core Processors T2 - Euro-Par 2015: Parallel Processing Workshops, Vienna, 2015 N2 - Hardware and software consistency protocols rely on global observability of consistency events. Acknowledged broadcast is an obvious choice to propagate these events. This paper presents a generalized ring topology for parallel event propagation with acknowledged delivery. Implementations for various many-core architectures show increased performance over conventional approaches. Therefore, diamond rings are a prime candidate for implementations of distributed memory models. Y1 - 2015 UR - http://link.springer.com/chapter/10.1007%2F978-3-319-27308-2_58 SN - 978-3-319-27308-2 U6 - https://doi.org/10.1007/978-3-319-27308-2_58 SP - 722 EP - 733 PB - Springer International Publishing CY - Cham ER - TY - GEN A1 - Nürnberger, Stefan A1 - Drescher, Gabor A1 - Rotta, Randolf A1 - Nolte, Jörg A1 - Schröder-Preikschat, Wolfgang T1 - Shared Memory in the Many-Core Age T2 - Euro-Par 2014: Parallel Processing Workshops, Porto, 2014 N2 - With the evolution toward fast networks of many-core processors, the design assumptions at the basis of software-level distributed shared memory (DSM) systems change considerably. But efficient DSMs are needed because they can significantly simplify the implementation of complex distributed algorithms. This paper discusses implications of the many-core evolution and derives a set of reusable elementary operations for future software DSMs. These elementary operations will help in exploring and evaluating new memory models and consistency protocols. Y1 - 2014 UR - http://link.springer.com/chapter/10.1007%2F978-3-319-14313-2_30 SN - 978-3-319-14312-5 U6 - https://doi.org/10.1007/978-3-319-14313-2_30 SP - 351 EP - 362 PB - Springer International Publishing CY - Cham ER - TY - GEN A1 - Lopacinski, Lukasz A1 - Brzozowski, Marcin A1 - Kraemer, Rolf A1 - Nolte, Jörg T1 - 100 Gbps Wireless - Challenges to the Data Link Layer T2 - IEICE Information and Communication Technology Forum, Poznan/Poland, 2014 KW - Wireless KW - 100 Gbps KW - FPGA Y1 - 2014 UR - http://i-scover.ieice.org/proceedings/ICTF/2014/pdf/MOBILE2-4.pdf ER - TY - GEN A1 - Lopacinski, Lukasz A1 - Nolte, Jörg A1 - Büchner, Steffen A1 - Brzozowski, Marcin A1 - Kraemer, Rolf T1 - A 100 Gbps data link layer with an adaptive algorithm for forward error correction T2 - Proceedings of 2015 IEICE ICTF, Manchester/United Kingdom, 2015 Y1 - 2015 UR - http://i-scover.ieice.org/iscover/page/ARTICLE-ABA81F9A-B546-0F09-B444-5E437C2E88C7 ER - TY - GEN A1 - Lopacinski, Lukasz A1 - Brzozowski, Marcin A1 - Kraemer, Rolf A1 - Büchner, Steffen A1 - Nolte, Jörg T1 - 100 Gbps data link layer - from simulation to FPGA implementation T2 - Journal of Telecommunications and Information Technology (JTIT) Y1 - 2016 UR - http://www.itl.waw.pl/czasopisma/JTIT/2016/1/90.pdf SN - 1509-4553 IS - 1 SP - 90 EP - 100 ER - TY - GEN A1 - Lopacinski, Lukasz A1 - Nolte, Jörg A1 - Büchner, Steffen A1 - Brzozowski, Marcin A1 - Kraemer, Rolf T1 - Improved Turbo Product Coding dedicated for 100 Gbps Wireless Terahertz Communication T2 - 27th Annual International Symposium on Personal, Indoor, and Mobile Radio Communications (PIMRC), Valencia/Spain, 2016 Y1 - 2016 SN - 978-1-5090-3254-9 SN - 978-1-5090-3255-6 U6 - https://doi.org/10.1109/PIMRC.2016.7794685 PB - IEEE CY - Piscataway, NJ ER - TY - GEN A1 - Lopacinski, Lukasz A1 - Büchner, Steffen A1 - Nolte, Jörg A1 - Brzozowski, Marcin A1 - Kraemer, Rolf T1 - Towards 100 Gbps wireless communication: energy efficiency of ARQ, FEC, and RF-frontends T2 - International Symposium on Wireless Communication Systems (ISWCS), Poznan/Poland, 2016 Y1 - 2016 UR - http://ieeexplore.ieee.org/document/7600922/ SN - 978-1-5090-2061-4 U6 - https://doi.org/10.1109/ISWCS.2016.7600922 SP - 320 EP - 324 PB - IEEE CY - Piscataway, NJ ER - TY - GEN A1 - Lohs, Stefan A1 - Siegemund, Gerry A1 - Nolte, Jörg A1 - Turau, Volker T1 - Self-Stabilization - A Mechanism to Make Networked Embedded Systems More Reliable? T2 - 35th Symposium on Reliable Distributed Systems (SRDS), Budapest, Hungary, September 26-29, 2016 N2 - The erratic behavior of wireless channels is still a major hurdle in the implementation of robust applications in wireless networks. In the past it has been argued that self-stabilization is a remedy to provide the needed robustness. This assumption has not been verified to the extent necessary to convince engineers implementing such applications. A major reason is that the time in which a self-stabilizing system returns to a valid state is unpredictable and potentially unbound. Failure rates typically depend on physical phenomena and in self-stabilizing systems each node tries to react to failures in an inherently adaptive fashion by the cyclic observation of its neighbors' states. When the frequency of state changes is too high, the system may never reach a state sufficiently stable for a specific task. In this paper we substantiate the conditions under which self-stabilization leads to fault tolerance in wireless networks and look at the myths about the power of self-stabilization as a particular instance of self-organization. We investigate the influences of the error rate and the neighbor state exchange rate on the stability and the convergence time on topology information acquired in real network experiments. KW - Fault tolerant systems KW - Wireless sensor networks KW - self-stabilization Y1 - 2016 SN - 978-1-5090-3513-7 U6 - https://doi.org/10.1109/SRDS.2016.049 SP - 317 EP - 326 PB - IEEE CY - Piscataway, NJ ER - TY - GEN A1 - Lohs, Stefan A1 - Siegemund, Gerry A1 - Nolte, Jörg A1 - Turau, Volker T1 - Influence of Topology-Fluctuations on Self-Stabilizing Algorithms T2 - International Conference on Distributed Computing in Sensor Systems (DCOSS) N2 - Self-stabilizing systems have in theory the unique and provable ability, to always return to a valid system state even in the face of failures. These properties are certainly desirable for domains like wireless ad-hoc networks with numerous unpredictable faults. Unfortunately, the time in which the system returns to a valid state is not predictable and potentially unbound. The failure rate typically depends on physical phenomena and in self-stabilizing systems each node tries to react to failures in an inherently adaptive fashion by the cyclic observation of the states of its neighbors. When state changes are either too quick or too slow the system might never reach a state that is sufficiently stable for a specific task. In this paper, we investigate the influences of the error rate on the (stability) convergence time on the basis of topology information acquired in real network experiments. This allows us to asses the asymptotic behavior of relevant self-stabilizing algorithms in typical wireless networks. KW - wireless sensor networks KW - network topology KW - topology KW - stability analysis KW - wireless networks KW - Ad hoc networks Y1 - 2016 SN - 978-1-5090-1460-6 SN - 978-1-5090-1461-3 SP - 122 EP - 124 PB - IEEE CY - Piscataway, NJ ER - TY - GEN A1 - Büchner, Steffen A1 - Lopacinski, Lukasz A1 - Nolte, Jörg A1 - Kraemer, Rolf T1 - 100 Gbit/s End-to-End Communication: Designing Scalable Protocols with Soft Real-Time Stream Processing T2 - 2016 IEEE 41st Conference on Local Computer Networks, 7-10 Nov. 2016 Y1 - 2016 UR - http://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=7796771&isnumber=7796740 SN - 978-1-5090-2054-6 U6 - https://doi.org/10.1109/LCN.2016.25 PB - IEEE CY - Piscataway, NJ ER - TY - GEN A1 - Rotta, Randolf A1 - Nolte, Jörg A1 - Nikolov, Vladimir A1 - Schubert, Lutz A1 - Bonfert, Stefan A1 - Wesner, Stefan T1 - MyThOS — Scalable OS Design for Extremely Parallel Applications T2 - 2016 Intl IEEE Conferences on Ubiquitous Intelligence Computing, Advanced and Trusted Computing, Scalable Computing and Communications, Cloud and Big Data Computing, Internet of People, and Smart World Congress, 18-21 July 2016 N2 - Many-core architectures trade single-thread performance for a larger number of cores. Scalable throughput can be attained only by a high degree of parallelism, minimized synchronization. Whilst this is achievable for many applications, the operating system still introduces bottlenecks through non-local sharing, synchronization,, message passing. A particular challenge for highly dynamic applications, for example invasive HPC applications, elastic compute clouds, is the management of short-living application threads, processes. This paper discusses OS architecture choices based on microkernel, multikernel, distributed systems designs, our development experience in the context of the MyThOS project. Initial experiments show a much faster thread creation, activation compared to monolithic systems like Linux while providing a more flexible protection, threading model that is better suited for dynamic scenarios. However, despite significant progress in the overall domain of operating systems, the design space for scalable many-core operating systems is yet to be fully explored. Y1 - 2016 SN - 978-1-5090-2771-2 U6 - https://doi.org/10.1109/UIC-ATC-ScalCom-CBDCom-IoP-SmartWorld.2016.0179 SP - 1165 EP - 1172 PB - IEEE CY - Piscataway, NJ ER - TY - GEN A1 - Rotta, Randolf A1 - Kuban, Robert A1 - Schöps, Mark Simon A1 - Nolte, Jörg T1 - Dealing with Layers of Obfuscation in pseudo-Uniform Memory Architectures T2 - Euro-Par 2016: Parallel Processing Workshops, Euro-Par 2016 International Workshops, Grenoble, France, August 24-26, 2016 N2 - Pseudo-Uniform Memory Architectures hide the memory's throughput bottlenecks and the network's latency differences in order to provide near-peak average throughput for computations on large datasets. This obviates the need for application-level partitioning and load balancing between NUMA domains but the performance of cross-core communication still depends on the actual placement of the involved variables and cores, which can result in significant variation within applications and between application runs. This paper analyses the pseudo-uniform memory latency on the Intel Xeon Phi Knights Corner processor, derives strategies for the optimised placement of important variables, and discusses the role of localised coordination in pUMA systems. For example, a basic cache line ping-pong benchmark showed a 3x speedup between adjacent cores. Therefore, pUMA systems combined with support for controlled placement of small datasets are an interesting option when processor-wide load balancing is difficult while localised coordination is feasible. Y1 - 2016 SN - 978-3-319-58942-8 SN - 978-3-319-58943-5 U6 - https://doi.org/10.1007/978-3-319-58943-5_55 SP - 685 EP - 696 PB - Springer International Publishing CY - Cham ER - TY - GEN A1 - Lopacinski, Lukasz A1 - Brzozowski, Marcin A1 - Kraemer, Rolf A1 - Büchner, Steffen A1 - Nolte, Jörg T1 - Improving Energy Efficiency using a Link Adaptation Algorithm Dedicated for 100 Gbps Wireless Communication T2 - AEÜ - International Journal of Electronics and Communications Y1 - 2017 SN - 1434-8411 SN - 1618-0399 VL - 81 SP - 67 EP - 73 ER - TY - CHAP A1 - Lopacinski, Lukasz A1 - Brzozowski, Marcin A1 - Kraemer, Rolf A1 - KrishneGowda, Karthik A1 - Büchner, Steffen A1 - Nolte, Jörg T1 - Towards 100 Gbps Wireless Communication: Investigation of FEC Interleavers for PSSS-15 Spreading T2 - IEEE EUROCON 2017, 17th International Conference on Smart Technologies, Ohrid, Macedonia, 6-8 July 2017 Y1 - 2017 SN - 978-1-5090-3843-5 SP - 619 EP - 623 PB - IEEE CY - Piscataway, NJ ER - TY - GEN A1 - Büchner, Steffen A1 - Lopacinski, Lukasz A1 - Kraemer, Rolf A1 - Nolte, Jörg T1 - Protocol Processing for 100 Gbit/s and Beyond - A Soft Real-Time Approach in Hardware and Software T2 - Frequenz: Journal of RF-Engineering and Telecommunications Y1 - 2017 SN - 2191-6349 SN - 0016-1136 VL - 71 IS - 9-10 SP - 427 EP - 438 ER - TY - GEN A1 - Büchner, Steffen A1 - Nolte, Jörg A1 - Hasani, Alireza A1 - Kraemer, Rolf T1 - 100 Gbit/s End-to-End Communication: Low Overhead On-Demand Protocol Replacement in High Data Rate Communication Systems T2 - 42nd Conference on Local Computer Networks (LCN), 9-12 Oct. 2017, Singapore KW - Protocol Replacement KW - 100 Gbit/s end-to-end KW - End2End100 KW - Soft Real-Time Protocol Stream Processing Y1 - 2017 UR - http://ieeexplore.ieee.org/document/8109360/ SN - 978-1-5090-6523-3 U6 - https://doi.org/10.1109/LCN.2017.40 SP - 231 EP - 234 PB - IEEE CY - Piscataway, NJ ER - TY - GEN A1 - Karnapke, Reinhardt A1 - Nolte, Jörg T1 - Unidirectional Link Counter - a Routing Protocol for Wireless Sensor Networks with Many Unidirectional Links T2 - 14th Annual Mediterranean Ad Hoc Networking Workshop (Med-Hoc-Net 2015), Vilamoura, Portugal, 17 - 18 June 2015 Y1 - 2015 SN - 978-1-4673-7306-7 SP - 1 EP - 7 PB - IEEE CY - Piscataway ER - TY - GEN A1 - Kuban, Robert A1 - Rotta, Randolf A1 - Nolte, Jörg ED - Heras, Dora B. ED - Bougé, Luc T1 - Help Your Busy Neighbors: Dynamic Multicasts over Static Topologies T2 - Euro-Par 2017: Parallel Processing Workshops KW - multicast KW - shared memory KW - many-core KW - TLB shootdown Y1 - 2018 SN - 978-3-319-75177-1 SN - 978-3-319-75178-8 U6 - https://doi.org/10.1007/978-3-319-75178-8_51 N1 - viele weitere Herausgeber SP - 636 EP - 657 PB - Springer CY - Cham ER - TY - GEN A1 - Segabinazzi Ferreira, Raphael A1 - Nolte, Jörg T1 - Low latency reconfiguration mechanism for fine-grained processor internal functional units T2 - 2019 IEEE Latin American Test Symposium (LATS) N2 - The strive for performance, low power consumption, and less chip area have been diminishing the reliability and the time to fault occurrences due to wear out of electronic devices. Recent research has shown that functional units within processors usually execute a different amount of operations when running programs. Therefore, these units present different individual wear out during their lifetime. Most existent schemes for reconfiguration of processors due to fault detection and other processor parameters are done at the level of cores which is a costly way to achieve redundancy. This paper presents a low latency (approximately 1 clock cycle) software controlled mechanism to reconfigure units within processor cores according to predefined parameters. Such reconfiguration capability delivers features like wear out balance of processor functional units, configuration of units according to the criticality of tasks running on an operating system and configurations to gain in performance (e.g. parallel execution) when possible. The focus of this paper is to show the implemented low latency reconfiguration mechanism and highlight its possible main features. Y1 - 2019 SN - 978-1-7281-1756-0 U6 - https://doi.org/10.1109/LATW.2019.8704560 SN - 2373-0862 ER - TY - GEN A1 - Segabinazzi Ferreira, Raphael A1 - George, Nevin A1 - Chen, Junchao A1 - Hübner, Michael A1 - Krstic, Milos A1 - Nolte, Jörg A1 - Vierhaus, Heinrich Theodor T1 - Configurable Fault Tolerant Circuits and System Level Integration for Self-Awareness T2 - Proceedings of the Work in Progress Session held in connection with SEAA 2019, the 45th EUROMICRO Conference on Software Engineering and Advanced Applications and DSD 2019, the 22nd EUROMICRO Conference on Digital System Design N2 - Scaling minimum features of ICs down to the 10nm- area and below has allowed high integration rates in electronics. Scaling at supply voltages of 1V and below also implies a rising level of stress which drives aging effects that reduce switching speed and the expected life time. Additionally, vulnerability from particle radiation is increased. Hence, fault detection and on- line correction become a must for many applications. However, not only fault tolerance but self-awareness becomes also an advantage. Provided that by being aware of its own healthy state allow optimized configurations regarding system operation modes and configurable hardware mechanism. This paper shows a preliminary work in a configurable circuit and explores its configuration possibilities when integrated into a complete system. Y1 - 2019 SN - 978-3-902457-54-7 U6 - https://doi.org/10.26127/BTUOpen-5050 PB - SEA-Publications CY - Kallithea, Chalkidiki (Greece) ER - TY - GEN A1 - Jenihhin, Maksim A1 - Hamdioui, Said A1 - Sonza-Reorda, Matteo A1 - Krstic, Milos A1 - Langendörfer, Peter A1 - Sauer, Christian A1 - Klotz, Anton A1 - Hübner, Michael A1 - Nolte, Jörg A1 - Vierhaus, Heinrich Theodor A1 - Selimis, Georgions A1 - Alexandrescu, Dan A1 - Taouil, Mottaqiallah A1 - Schrijen, Geert-Jan A1 - Sterpone, Luca A1 - Squillero, Giovanni A1 - Dyka, Zoya A1 - Raik, Jaan T1 - RESCUE: Interdependent Challenges of Reliability, Security and Quality in Nanoelectronic Systems T2 - ArXiv.org Y1 - 2019 UR - https://arxiv.org/abs/1912.01561 ER - TY - GEN A1 - Segabinazzi Ferreira, Raphael A1 - Nolte, Jörg A1 - Vargas, Fabian A1 - George, Nevin A1 - Hübner, Michael T1 - Run-time Hardware Reconfiguration of Functional Units to Support Mixed-Critical Applications T2 - IEEE Latin American Test Symposium (LATS), Maceió, Brazil Y1 - 2020 U6 - https://doi.org/10.1109/LATS49555.2020.9093692 ER - TY - GEN A1 - Hasani, Alireza A1 - Lopacinski, Lukasz A1 - Büchner, Steffen A1 - Nolte, Jörg A1 - Kraemer, Rolf T1 - A Modified Shuffling Method to Split the Critical Path Delay in Layered Decoding of QC-LDPC Codes T2 - 30th IEEE International Symposium on Personal, Indoor and Mobile Radio Communications (PIMRC 2019), Istanbul, Turkey, 08 - 11 September 2019 Y1 - 2019 SN - 978-1-5386-8110-7 SN - 978-1-5386-8111-4 U6 - https://doi.org/10.1109/PIMRC.2019.8904435 SN - 2166-9589 SN - 2166-9570 ER - TY - GEN A1 - Hasani, Alireza A1 - Lopacinski, Lukasz A1 - Büchner, Steffen A1 - Nolte, Jörg A1 - Kraemer, Rolf T1 - An Unnoticed Property in QC-LDPC Codes to Find the Message from the Codeword in Non-Systematic Codes T2 - 28th European Conference on Networks and Communications (EuCNC 2019), Valencia, Spain, 18 - 21 June 2019 Y1 - 2019 SN - 978-1-7281-0546-8 SN - 978-1-7281-0545-1 U6 - https://doi.org/10.1109/EuCNC.2019.8801957 SN - 2575-4912 PB - IEEE ER - TY - GEN A1 - Hasani, Alireza A1 - Lopacinski, Lukasz A1 - Büchner, Steffen A1 - Nolte, Jörg A1 - Kraemer, Rolf T1 - A Modified Rejection-Based Architecture to Find the First Two Minima in Min-Sum-Based LDPC Decoders T2 - IEEE Wireless Communications and Networking Conference (WCNC 2020), Seoul, South Korea, 25 - 28 May 2020 Y1 - 2020 SN - 978-1-7281-3106-1 SN - 978-1-7281-3107-8 U6 - https://doi.org/10.1109/WCNC45663.2020.9120630 SN - 1558-2612 PB - IEEE ER - TY - CHAP A1 - Büchner, Steffen A1 - Nolte, Jörg A1 - Hasani, Alireza A1 - Kraemer, Rolf A1 - Lopacinski, Lukasz ED - Kraemer, Rolf ED - Scholz, Stefan T1 - End2End100 - Communication Protocol Processing for Ultra High Data Rates T2 - Wireless 100 Gbps and beyond : architectures, spproaches and findings of German Research Foundation (DFG) priority programme SPP 1655 Y1 - 2020 SN - 978-3-96439-003-5 SP - 359 EP - 396 PB - IHP GmbH CY - Frankfurt (Oder) ET - 1. Auflage ER - TY - GEN A1 - Rotta, Randolf A1 - Segabinazzi Ferreira, Raphael A1 - Nolte, Jörg T1 - Real-time dynamic hardware reconfiguration for processors with redundant functional units T2 - Proceedings of the 2020 IEEE 23rd International Symposium on Real-Time Distributed Computing (ISORC) N2 - The tiny logic elements in modern integrated circuits increase the rate of transient failures significantly. Therefore, redundancy on various levels is necessary to retain reliability. However, for mixed-criticality scenarios, the typical processor designs offer either too little fault-tolerance or too much redundancy for one part of the applications. Amongst others, we specifically address redundant processor internal functional units (FU) to cope with transient errors and support wear leveling. A real-time operating system (RTOS) was extended to control our prototypical hardware platform and, since it can be configured deterministically within few clock cycles, we are able to reconfigure the FUs dynamically, at process switching time, according to the specified critically of the running processes. Our mechanisms were integrated into the Plasma processor and the Plasma-RTOS. With few changes to the original software code, it was, for example, possible to quickly change from fault-detecting to fault-correcting modes of the processor on demand. KW - Mixed-criticality; Modular redundancy; Reconfiguration; Run-Time Y1 - 2020 SN - 978-1-7281-6958-3 U6 - https://doi.org/10.1109/ISORC49007.2020.00035 SN - 2375-5261 PB - Institute of Electrical and Electronics Engineers Inc. (IEEE) CY - Nashville, TN, USA ER - TY - GEN A1 - Büchner, Steffen A1 - Hasani, Alireza A1 - Lopacinski, Lukasz A1 - Kraemer, Rolf A1 - Nolte, Jörg T1 - 100 Gbit/s End-to-End Communication: Adding Flexibility with Protocol Templates T2 - 2018 IEEE 43rd Conference on Local Computer Networks (LCN) N2 - High-speed protocol processing that provides data-rates of 100 Gbit/s and beyond to the application stresses the whole communication system up to its outer limits. Such a system can only be utilized by employing highly specialized, application specific protocols, that are tailored for certain communication parameters, such as the packet loss rate. However, the requirements for most applications are not static, and a protocol designer cannot anticipate all possible communication conditions upfront. The contradiction between specialized protocols and unknown communication parameters can be solved by adapting the protocol implementation on demand to the current communication conditions. However, such an approach needs a protocol description language that allows the automatic specialization of protocols. In this paper, we present the Protocol Engine Template Language (PETL), that allows the automatic implementation of protocols by a constructive approach for a variety of communication conditions from protocol implementation templates. KW - Protocol Template KW - 100 Gbit/s end-to-end KW - End2End 100 KW - Soft Real-Time Protocol Stream Processing Y1 - 2018 SN - 978-1-5386-4413-3 SN - 978-1-5386-4414-0 U6 - https://doi.org/10.1109/LCN.2018.8638078 SN - 0742-1303 SP - 263 EP - 266 ET - 1. Auflage ER - TY - GEN A1 - Eichler, Christian A1 - Hofmeier, Henriette A1 - Reif, Stefan A1 - Hönig, Timo A1 - Nolte, Jörg A1 - Schröder-Preikschat, Wolfgang T1 - Neverlast: Towards the Design und Implementation of the NVM-based Everlasting Operating System T2 - Hawaii International Conference on System Sciences 2021 - HICSS-54 KW - operating systems KW - non-volatile memory KW - software development for mobile devices, the internet-of-things, and cyber physical systems energy Y1 - 2021 UR - https://scholarspace.manoa.hawaii.edu/handle/10125/71491 U6 - https://doi.org/10.24251/HICSS.2021.870 SP - 7227 EP - 7236 PB - Scholarspace ER - TY - GEN A1 - Köhler, Sven A1 - Herzog, Benedict A1 - Hönig, Timo A1 - Wenzel, Lukas A1 - Plauth, Max A1 - Nolte, Jörg A1 - Polze, Andreas A1 - Schröder-Preikschat, Wolfgang T1 - Pinpoint the Joules: Unifying Runtime-Support for Energy Measurements on Heterogeneous Systems T2 - 2020 IEEE/ACM International Workshop on Runtime and Operating Systems for Supercomputers (ROSS) N2 - For the design and operation of today's computer systems, power and energy requirements are highest priorities. Unlike performance analyses, however, power and energy measurements of heterogeneous systems are difficult to conduct. Especially at the system-software level, performing power and energy measurements remains challenging. Yet, such measurements are essential to improve software components for low power and high energy-efficiency.In this paper, we analyze and discuss the power and energy characteristics of several heterogeneous systems with up to 20 cores (160 hardware threads) and 1 TB of main memory. For the analyzed systems, we outline challenges regarding power and energy measurements and show ways to overcome limitations (i.e., sampling constraints). To improve the current state of the art in power and energy measurements at the system-software level, we present the design and implementation of PINPOINT, an energy-profiling tool which unifies different power and energy measurement interfaces. Y1 - 2020 UR - https://www.computer.org/csdl/proceedings-article/ross/2020/104600a031/1pXlZMpoXTO VL - 1 SP - 31 EP - 40 PB - IEEE Xplore ER - TY - GEN A1 - Giersch, Oliver A1 - Nolte, Jörg T1 - Fast and Portable Concurrent FIFO Queues with Deterministic Memory Reclamation T2 - IEEE Transactions on Parallel and Distributed Systems (TPDS) KW - memory management KW - instruction sets KW - hazards KW - indexes KW - runtime KW - arrays KW - synchronization Y1 - 2021 U6 - https://doi.org/10.1109/TPDS.2021.3097901 SN - 1045-9219 SN - 1558-2183 VL - 33 IS - 3 SP - 604 EP - 616 ER - TY - GEN A1 - Köppen, Marcel A1 - Traue, Jana A1 - Borchert, Christoph A1 - Nolte, Jörg A1 - Spinczyk, Olaf ED - Hawblitzel, Chris ED - Muller, Gilles ED - Spinczyk, Olaf T1 - Cache-Line Transactions: Building Blocks for Persistent Kernel Data Structures Enabled by AspectC++ T2 - PLOS ’19, Proceedings of the 10th Workshop on Programming Languages and Operating Systems Y1 - 2019 SN - 978-1-4503-7017-2 U6 - https://doi.org/10.1145/3365137.3365396 SP - 38 EP - 44 PB - acm, The Association for Computing Machinery CY - New York ER - TY - GEN A1 - Schmaus, Florian A1 - Pfeiffer, Nicolas A1 - Hönig, Timo A1 - Nolte, Jörg A1 - Schröder-Preikschat, Wolfgang T1 - Nowa: A Wait-Free Continuation-Stealing Concurrency Platform T2 - 2021 IEEE International Parallel and Distributed Processing Symposium (IPDPS) Y1 - 2021 SN - 978-1-6654-4066-0 U6 - https://doi.org/10.1109/IPDPS49936.2021.00044 SP - 360 EP - 371 PB - IEEE ER - TY - GEN A1 - Chatharajupalli, Navya Sneha A1 - Rotta, Randolf A1 - Karnapke, Reinhardt A1 - Nolte, Jörg T1 - Assessing the Feasibility of Combined BLE and Wi-Fi Communication for High Data Sensing Applications T2 - EWSN '23: Proceedings of the 2023 International Conference on Embedded Wireless Systems and Networks N2 - Advanced sensors generate more data than can be transmitted using classic battery-powered wireless sensor networks. While using Wi-Fi would provide plenty of throughput, the receivers are energy hungry and, thus, the radio time needs to be reduced. Previous research suggests to combine Wi-Fi with low-power technologies such as BLE for an energy efficient coordination of the Wi-Fi radios. Existing approaches focus on individual point-to-point routes whereas certain applications require concurrent transmissions. We evaluated the combination of BLE and Wi-Fi on the ESP32-S3 multi-radio microcontroller through detailed energy and throughput measurements. The results show that established BLE connections allow to activateWi-Fi quickly on-demand; the energy efficiency of the data transmission is significantly improved over previous works but the BLE connection setup is prohibitively slow. While the combination of BLE and Wi-Fi provides high throughput with good energy efficiency, careful design of the BLE-based signalling protocol is necessary to also achieve low latency. Y1 - 2023 U6 - https://doi.org/10.5555/3639940.3639948 SP - 56 EP - 59 PB - Association for Computing Machinery CY - New York ER - TY - CHAP A1 - Chatharajupalli, Navya Sneha A1 - Rotta, Randolf A1 - Nolte, Jörg T1 - P2 - VibroMote: Energy efficient Vibration Monitoring for Railway tracks and Bridges T2 - iCCC2024 - iCampµs Cottbus Conference 2024-05-14 - 2024-05-16 N2 - Filtering, storing, and transmitting measurements of high-resolution sensors within a limited energy budget is challenging. For instance, a 3-axis MEMS acceleration sensor for structural condition monitoring and predictive maintenance generates up to 160 kB/s at a sampling rate of 26.6 kHz. This paper discusses the design space with focus on solar harvesting solutions. VibroMote is an energy efficient sensor node that combines a multi-radio micro-controller, an ultra-low power co-processor with persistent memory, a solar harvester, and multiple energy storage options. This enables prototyping of solar-powered long-term data acquisition, in-node processing, and wireless networking for high-resolution sensors. KW - structural condition monitoring KW - predictive maintenance KW - energy efficiency KW - solar harvesting Y1 - 2024 SN - 978-3-910600-00-3 U6 - https://doi.org/10.5162/iCCC2024/P2 SP - 123 EP - 126 PB - AMA Service GmbH, Von-Münchhausen-Str. 49, 31515 Wunstorf, Germany ER - TY - GEN A1 - Rabenstein, Jonas A1 - Nguyen, Dustin A1 - Giersch, Oliver A1 - Eichler, Christian A1 - Hönig, Timo A1 - Nolte, Jörg A1 - Schröder-Preikschat, Wolfgang ED - Goumas, Georgios ED - Tomforde, Sven ED - Brehm, Jürgen ED - Wildermann, Stefan ED - Pionteck, Thilo T1 - Back to the core-memory age: running operating systems in NVRAM only T2 - Proceedings: architecture of computing systems: 36th International Conference, ARCS 2023, June 13 - 15, 2023 N2 - The classic core memory was completely non-volatile and thus kept at least part of the operating system persistently in main memory, even over power cycles. Nowadays we can repeat this approach with NVRAM, but with terabytes of main memory on a completely different scale and with parts of the operating-system state stored in volatile CPU caches. In this paper, we discuss our experiences of running large modern operating systems including their applications entirely in NVRAM. We adapted stock Linux and FreeBSD kernels to work exclusively with NVRAM by hiding all DRAM from the kernels at boot time to establish a realistic performance baseline without changing anything else. Following this entirely NVRAM-agnostic approach, we could observe an effective performance penalty of a factor of about four, but only negligible increases in whole-system power draw. For our system with two CPU sockets and 56 cores total, we also observed a reduction in power draw in several scenarios. Due to prolonged execution times, the energy consumption increased as well for these measured workloads. While this might be discouraging at first sight, this result was achieved without any performance tuning as to the specific characteristics of today’s NVRAM technology. Therefore, we are also discussing means to mitigate the observed shortcomings by integrating NVRAM appropriately into the memory hierarchy of future robust persistent systems. KW - NVRAM KW - Operating Systems KW - Energy Y1 - 2023 SN - 978-3-031-42784-8 U6 - https://doi.org/10.1007/978-3-031-42785-5_11 SP - 153 EP - 167 PB - Springer-Verlag ER - TY - GEN A1 - Giersch, Oliver A1 - Nguyen, Dustin A1 - Nolte, Jörg A1 - Schröder-Preikschat, Wolfgang T1 - Virtual memory revisited for tiered memory T2 - Proceedings of the 15th ACM SIGOPS Asia-Pacific Workshop on Systems N2 - The landscape of memory technologies has grown substantially more diverse and heterogeneous, with a number of special-purpose memory technologies reaching market maturity in recent years, such as NVRAM (Non-Volatile Memory), HBM (High-Bandwidth Memory) or the upcoming CXL.mem. Future computing systems will have to contend with byte-addressable and cache-coherent main memory that is highly diverse, either in terms of the fundamental performance characteristics of its underlying memory technology, or due to the fact that CXL.mem will allow accessing homogenous but remote memory. The VM (Virtual Memory) subsystems of today have been empirically optimized over decades, but were designed for a single tier of main memory only. While recent approaches that integrated tiered memory have focused on better memory access metrics to improve page placement strategies, we seek to leverage the proven heuristics that are already in place. In times of high load we assign pages from slower memory, demote inactive pages according to standard page replacement strategies and use lazy page promotions when sufficient resources are available again to retain the inherently high reactivity of demand paging with regard to working set changes. We integrate these mechanisms into the VM subsystem of a full-featured mainstream operating system (FreeBSD) with minimal adaptations. The resulting multi-tier VM system runs in a stable and efficient manner under high stress even with highly unfavorable work loads. KW - Operating Systems KW - Resource Disaggregation Y1 - 2024 SN - 979-8-4007-1105-3 U6 - https://doi.org/10.1145/3678015.3680475 SP - 1 EP - 7 PB - ACM CY - New York, NY, USA ER - TY - GEN A1 - Rotta, Randolf A1 - Chatharajupalli, Navya Sneha A1 - Naumann, Billy A1 - Schulz, Julius A1 - Karnapke, Reinhardt A1 - Werner, Matthias A1 - Nolte, Jörg T1 - Demo: B.A.T.M.A.N. mesh routing on ultra low-power IEEE 802.11 modules T2 - 2024 IEEE 49th Conference on Local Computer Networks (LCN) N2 - When implementing multi-hop mesh network protocols, efficient direct communication, route discovery, and route repair are crucial to achieve high network throughput. To our knowledge, there is no open mesh routing protocol available for ultra low power IEEE 802.11 modules. Previous work relied on single board computers like Raspberry Pi. We implemented the B.A.T.M.A.N. mesh protocol on the popular Espressif ESP32 along with a novel hybrid rate adaptation for the selection of efficient routes. In this demo we showcase challenges and solutions related to the implementation on ESP32 and how the hybrid rate adaptation improves end-to-end throughput. KW - ad-hoc networks KW - mesh networks KW - low power electronics KW - throughput Y1 - 2024 SN - 979-8-3503-8800-8 U6 - https://doi.org/10.1109/LCN60385.2024.10639789 SN - 2832-1421 PB - IEEE ER -