A design methodology for soft-core platforms on FPGA with SMP Linux, OpenMP support, and distributed hardware profiling system

Abstract

In recent years, the use of multiprocessor systems has become increasingly common. Even in the embedded domain, the development of platforms based on multiprocessor systems or the porting of legacy single-core applications are frequent needs. However, such designs are often complicated, as embedded systems are characterized by numerous non-functional requirements and a tight hardware/software integration. This work proposes a methodology for the development and validation of an embedded multiprocessor system. Specifically, the proposed method assumes the use of a portable, open source API to support the parallelization and the possibility of prototyping the system on a field-programmable gate array. On this basis, the proposed flow allows an early exploration of the hardware configuration space, a preliminary estimate of performance, and the rapid development of a system able to satisfy the design specifications. An accurate assessment of the actual performance of the system is then enforced by the use of an hardware-based profiling subsystem. The proposed design flow is described, and a version specifically designed for LEON3 processor is presented and validated. The application of the proposed methodology in a real case of industrial study is then presented and analyzed.

Hardware Realization of Kinematic Mechanism and Control System of Multifunctional Industrial Robot

“…With the rapid development of electronic technology, infrared detection technology has been widely used in military and civilian fields [1]. Any object can produce infrared radiation as long as its temperature is above absolute zero (−273 °C), like visible light, its radiation can be absorbed, reflected, and refracted.…”

“…At the same time, with the rapid development of electronic technology in recent years, especially the popularization of highspeed mobile networks and the Internet, there are higher requirements for the definition and frame rate of image collection, the High-Definition Multimedia Interface (HDMI) that supports higher video specifications has been widely used in computer systems and digital display devices [3]. HDMI is a digital high-definition multimedia interface, the transmission of direct digital signals can reduce the loss caused by multiple analog-to-analog conversions, at the same time, it can make the transmission distance longer, the signal bandwidth larger, and the anti-interference ability better (1).…”

The MegaM@Rt2 ECSEL project: MegaModelling at Runtime – Scalable model-based framework for continuous development and runtime validation of complex systems

“…A set of current engineering practices based on SysML, AADL, EAST ADL, but also Matlab/Simulink, AUTOSAR and Method B or Modelica, each one producing as set of specific design models, requirement specifications and resulting software (and sometimes also hardware) artefacts, are integrated into a global system model providing a complete view of the cyber-physical system, and detailing the components, behaviour and desired quality properties of the system. These properties are then object of exhaustive continuous testing and monitoring in the runtime environment (thanks to the configuration of the target platform and the injection of probes in the software or also in the hardware [18][19] [20]) to detect deviations in real-time. These deviations, plus all the traces information collected in the process, are analyzed to detect the impacted components in the integrated view of system models.…”

Wilson-Hilferty-type approximation for Poisson Random Variable

“…The availability and evolution of computing hardware [2]- [3] and the development of computational methods requiring the repeated generation of random numbers according to these distributions has stimulated the development of accurate and fast algorithms.…”