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 -