This methodology has been adapted to design embedded and realtime software, emphasizing the use of uml 15 to formally specify systems. This work gives an overview of several relevant reconfigurable architectures and design techniques developed by the authors in different projects and emphasizes the effective role of reconfigurability in embedded system design. Actororiented control system design ptolemy project. The actor model in computer science is a mathematical model of concurrent computation that. Actor oriented components emphasize concurrency and temporal semantics and are used for modeling and designing embedded software and hardware. Object oriented oo design manages complexity in the system through object abstraction, class hierarchies, and method call interfaces. Embedded systems interact with the ph ysical world through sensors and actuators. These days, most include b oth hardw are and soft w are designs that are sp ecialized to the application. Actors interact with one another through ports via a messaging schema. These days, most include both hardware and software designs that are specialized to the application. Acm transactions on embedded computing systems tecs, 84.
Some of this hardware has continuoustime dynamics, which is a particularly poor match to prevailing computational abstractions. First, such systems are often a mixture of hardware and software designs, so that the embedded software interacts with hardware that is specifically designed to interact with it. Study of the behavior of different models of computation moc and design flows oriented to dsp techniques for better decision taking when orienting the system to hardware or software. We illustrate these concepts by describing a design framework built on ptolemy ii. Pdf mapping actororiented models to tlm architectures. Lee and neuendorffer are supported in part by the ptolemy proje. Hardwaresoftwarecodesignceng6534digital systems synthesis andoptimizationsummer 2012 2.
Actors may modify their own private state, but can only affect. Electronic mail email can be modeled as an actor system. Modeling and design of such heterogeneous systems is challenging. Modeling and simulation of water fountain control software in. Actororiented design of embedded hardware and software systems article pdf available in journal of circuits, systems and computers 123 august 2002 with 333 reads how we measure reads. In contrast to the interfaces in object oriented design methods, principally, which mediate transfer of the locus of control, interfaces in actor oriented design. Actororiented design has been around since at least. Wirthlin, title actororiented design of embedded hardware and software systems, year 2003.
Lee professor uc berkeley seventh a nnual workshop on embedded computing hpec, sept. Actor oriented design of embedded hardware and software systems 1. Actor oriented design, behavioral types, behavioral polymorphism, component specialization, code generation, parameterization, ptolemy. Wirthlin, journaljournal of circuits, systems, and computers, year2003, volume12, pages231260. Modeldriven development from objectoriented design to actor. Actor oriented design emphasizes concurrency and communication between. System level performance simulation for heterogeneous multi. Lee, uc berkeley 2 abstract the ptolemy project at uc berkeley studies modeling, simulation, and. Actororiented design of embedded hardware and software systems.
Leveraging synchronous language principles for heterogeneous. The system must be scalable to a large number of servers, it must work well with a variety of cloud storage services, and it must integrate smoothly with the actor programming model. For an applicationlevel platform, such as audio signal processing, the elements of the set are described in the informal language of the application domain. Federation of automatic control 15th world congress. Pdf semantics we are trying to preserve the specialization of models of computation and also achieve generality. An embedded system mixes digital controllers realized in hardware and software with the continuous dynamics of physical systems 30. In response to a message it receives, an actor can. A platform is an abstraction layer in the design flow. Introduction embedded systems interact with the physical world through sensors and actuators. Conceptually, the distinction between hardware and software, from the per. The double roof model of the design flow of embedded systems tei01. Actor oriented design of embedded hardware and software systems, journal of circuits. Pdf classes and inheritance in actororiented design. Such systems are semantically heterogeneous, combining continuous dynamics, periodic timed actions, and asynchronous event reactions.
Like hardware, embedded software faces stringent design constraints, undergoes extremely aggressive optimization, and therefore has a similar need for verifying the functional equivalence of two versions of a design, e. As a consequence, a 0 languages are wellsuited to embedded software and distributed realtime systems. It combines objectoriented design of software with portautomaton design of digital control systems. Lee, haiyang zheng, leveraging synchronous language principles for heterogeneous modeling and design of embedded systems, emsoft 07, september 30 october 3, 2007, salzburg, austria. Mapping actor oriented models to tlm architectures.
Holistic actororiented modeling of embedded systems. Creation of the design libraries for complex adaptive systems for the ptolemy ii environment using actor oriented design. Actors interact with one another through ports via a m. Liao, towards a new standard for system level design, proc. Actor oriented design of embedded hardware and software systems. Tabbara, hardwaresoftware codesign of embedded systems. Using separation of concerns for embedded systems design. Pdf actororiented design of embedded hardware and software. When analyzing the underlying design principles and execution models of business work. Actororiented design of embedded hardware and software systems 1.
Formal methods and models for system design pp 3356 cite as. Uml had already claimed the term actors in usecase diagrams, and hence could not use the term for these concurrent objects. Polymorphic actororiented design for heterogeneous embedded. Wirthlin, title actor oriented design of embedded hardware and software systems, year 2003. Liao, towards a new standard for systemlevel design, proc. System upgrade on feb 12th during this period, ecommerce and registration of new users may not be available for up to 12 hours. Given a c program, one cannot tell whether it is a member of the set. Classes and inheritance in actororiented design acm. An overview of the ptolemy project and actor oriented design edward a. Components called actors execute and communicate with other actors. The actor model in computer science is a mathematical model of concurrent computation that treats actor as the universal primitive of concurrent computation. Performance modeling for realtime multiprocessor architectures is a challenging task in the design phase of embedded hardware software systems. Actor oriented design emphasizes concurrency and communication between components while maintaining modularity.
Abstract actor oriented components emphasize concurrency and temporal semantics and are used for modeling and designing embedded software and hardware. Actororiented design of embedded hardware and software. Actors interact with one another through ports via a messaging. Polymorphic actororiented design for heterogeneous embedded software 1 polymorphic actororiented design for heterogeneous embedded software edward a.
Wirthlin, title actororiented design of embedded hardware and software systems. Lee professor uc berkeley center for hybrid and embedded software systems omg technical meeting feb. Actororiented design of embedded hardware and software systems 2003. Water fountain control software is modeled in the form of different actor oriented components and then simulates based on ptolemy ii platform.
A control module is an instance of a class of portbased objects. Classes and subclasses in actororiented design ieee xplore. We present the vision of an actor oriented database. An overview of the ptolemy project and actororiented design. Lee uc berkeley and xiaojun liu sun microsystems and stephen neuendorffer xilinx actor oriented components emphasize concurrency and temporal semantics and are used for modeling and designing embedded software and hardware. Journal of circuits, systems and computers vol 12, no 03. Lee uc berkeley and xiaojun liu sun microsystems and stephen neuendorffer xilinx research labs actor oriented components emphasize concurrency and temporal semantics and are used for modeling and designing embedded software and hardware. Lee, causality interfaces for actor networks, acm transactions on embedded computing systems tecs, pp. Classes and inheritance in actor oriented design edward a. This paper presents an actororiented design methodology that tames these.