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Hector
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Fighting Back the Von Neumann Bottleneck with Small- and Large-Scale Vector Microprocessors
In his seminal Turing Award Lecture, Backus discussed the issues stemming from the word-at-a-time style of programming inherited from the von Neumann computer. More than forty years later, computer architects must be creative to amortize the von Neumann Bottleneck (VNB) associated with fetching and decoding instructions which only keep the datapath busy for a very short period of time. In particular, vector processors promise to be one of the most efficient architectures to tackle the VNB, by amortizing the energy overhead of instruction fetching and decoding over several chunks of data. This work explores vector processing as an option to build small and efficient processing elements for large-scale clusters of cores sharing access to tightly-coupled L1 memory
An Event-Driven Parallel-Processing Subsystem for Energy-Efficient Mobile Medical Instrumentation
Aging population and the thereby ever-rising cost of health services call for novel and innovative solutions for providing medical care and services. So far, medical care is primarily provided in the form of time-consuming in-person appointments with trained personnel and expensive, stationary instrumentation equipment. As for many current and past challenges, the advances in microelectronics are a crucial enabler and offer a plethora of opportunities. With key building blocks such as sensing, processing, and communication systems and circuits getting smaller, cheaper, and more energy-efficient, personal and wearable or even implantable point-of-care devices with medicalgrade instrumentation...
An Open-Source Research Platform for Heterogeneous Systems on Chip
Heterogeneous systems on chip (HeSoCs) combine general-purpose, feature-rich multi-core host processors with domain-specific programmable many-core accelerators (PMCAs) to unite versatility with energy efficiency and peak performance. By virtue of their heterogeneity, HeSoCs hold the promise of increasing performance and energy efficiency compared to homogeneous multiprocessors, because applications can be executed on hardware that is designed for them. However, this heterogeneity also increases system complexity substantially. This thesis presents the first research platform for HeSoCs where all components, from accelerator cores to application programming interface, are available under per...
The Alpine Journal
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Jost Amman
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Jost Amman
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Jost Amman
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Der Seenebelmord
Spätsommer auf Amrum. Die Künstlerin Finja Herder aus dem alten Fischerdorf Nebel nimmt mit anderen Frauen ein Bad im Meer. Seenebel zieht auf, und plötzlich ist Finja verschwunden. Bald kursiert das Gerücht, ein Spuk aus den Albträumen ihrer Kindheit habe sich bewahrheitet. Auch ein Unglück oder Freitod wird vermutet. Doch es mehren sich die Anzeichen für ein Verbrechen. Trotz intensiver Suche bleibt Finja verschollen. Haben Kuno Knudsen und Arne Zander es mit einem Mord ohne Leiche zu tun? In Verdacht gerät ein Schützling von Okko Knudsen, dem Bruder des Kommissars. Auch eine frühere Mitschülerin von Finja kommt als Täterin in Betracht. Als die Ermittlungen in eine Richtung deuten, wird Amrum von einem mysteriösen Todesfall erschüttert.
