By Patrick R. Schaumont
This publication presents a scientific advent to the subject of Hardware-Software Codesign. the cloth emphasizes the elemental rules, and the sensible facets of Hardware-Software Codesign. The booklet constructed from a direction with regards to Hardware-Software Codesign, equipped by means of the writer at Virginia Tech. it truly is separated into 4 differenct sections; simple techniques, customized Architectures, Hardware/Software Interfaces, and functions. the writer covers many strategies together with a few of the types of expressing computations, sequential and parallel implementations, control-flow and data-flow, keep watch over dependency and information dependency, latency and throughput in addition to the structure layout house of information paths, finite country machines, micro-programmed machines, instruction-set processors, system-on-chip, and on-chip buses. the cloth additionally contains the several sorts of hardware/software interfaces, their effect on functionality, fee, and software program complexity. The ebook comprises details on hardware/software integration of parts on most sensible of hardware/software interfaces in addition to layout method and layout flows for hardware-software codesign together with functionality assessment, verification and synthesis of and software program implementations. difficulties are integrated on the finish of every bankruptcy and a ideas guide could be on hand for teachers.
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Extra resources for A Practical Introduction to Hardware/Software Codesign
By 1974, Jack Dennis had developed a language for modeling data flow and described data flow using graphs, similar to our discussion in this chapter. In the 1970s and 1980s, an active research community was building not only data flow-inspired programming languages and tools but also computer architectures that implement data flow computing models. Today, data flow remains very popular to describe signal processing systems. R are based on the ideas of data For example, commercial tools such as Simulink flow.
Keep in mind that the application is the same for all these architectures and consists of encrypting bits. As indicated by the figure, the energyefficiency varies over many orders of magnitude. If these architectures are being used in hand-held devices, where energy is a scarce resource, obviously there is a strong motivation to use a less flexible, more specialized architecture. For the same reason, you will never find a high-end workstation processor in a cell phone. 3 The Driving Factors in Hardware/Software Codesign As pointed out in the previous section, energy-efficiency and relative performance are important factors to prefer a (fixed, parallel) hardware implementation over a (flexible, sequential) software implementation.
In this section, we examine these fundamental differences. 1 provides a synopsis. 1 The dualism of hardware and software design Hardware Software Design paradigm Decomposition in space Decomposition in time Resource cost Area (# of gates) Time (# of instructions) Constrained by Time (clock cycle period) Area (CPU instruction set) Flexibility Parallelism Must be designed-in Implicit Implicit Must be designed-in Modeling Reuse Model ¤ Implementation Uncommon Model Implementation Common Design Paradigm: In a hardware model, circuit elements operate in parallel.
A Practical Introduction to Hardware/Software Codesign by Patrick R. Schaumont