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Aiming to high sensitivity and wide spectrum of cosmic ray detection, the 1 km2 complex array of large high altitude air shower observatory (LHAASO-KM2A) project consists of over 7000 detectors of different types. To reconstruct the air shower events with high angular resolution, timestamps of all detector electronics and digitizers should be aligned better than 500 ps RMS. White Rabbit (WR) technology,...
Hardware in the Loop (HiL) supports development processes in many types of applications. Power electronic systems with switching frequencies up to several kilo hertz constitute some of the most demanding applications for the quantization time of the HiL. The non-avoidable delay forces very short calculation periods which lead to high effort in hardware and software implementation. For PWM based controllers...
Process arrival times at MPI collective operations differ significantly. Addressing this fact with special handling for popular collective communication algorithms can yield performance improvements. The recursive doubling algorithm is one of the most efficient techniques for implementing collectives in MPI, especially for short messages and when the number of participating processes is a power of...
A Hardware Trojan is a malicious hardware modification of an integrated circuit. It could be inserted at different design steps but also during the process fabrication of the target. Due to the damages that can be caused, detection of these alterations has become a major concern. In this paper, we propose a new resilient method to detect Hardware Trojan based on path delay measurements. First, an...
This paper presents an FPGA based Ethernet cutthrough switch that is optimized for one-step PTP clock synchronization and fast forwarding of real-time Ethernet frames. Whereas a standard switch ASIC provides sophisticated mechanisms for switching of non-real-time frames, an attached FPGA implements cut-through switching of real-time frames and synchronization events. Moreover, timestamping of synchronization...
This paper gives a brief introduction of a high-speed playback board which has multi-channel synchronization function. FPGA is controller and AD9739 is playback chip. By choosing hardware and configuring software, the board can be used as single-channel, dual-channel, three-channel and four-channel data playback board. When the operating mode is selected as a channel with four paths, playback rate...
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