DURRA : A Task-Level Description Language
نویسندگان
چکیده
This research is carried out jointly by the Software Engineering Institute, a Federally Funded Research and Development Center, sponsored by the Department of Defense, and by the Department of Computer Science, sponsored by the Defense Advanced Research Projects Agency (DOD), ARPA Order No. 4976, monitored by the Air Force Avionics Laboratory Under Contract F33615-84-K-1520. Additional support for J.M. Wing was provided in part by the National Science Foundation under grant DMC-8519254.
منابع مشابه
Performance and Reliability Enhancement of the Durra Runtime Environment
Durra is a language designed to support PMS-level programming. PMS stands for Processor Memory Switch, the name of the highest level in the hierarchy of digital systems. An application or PMS-level program is written in Durra as a set of task descriptions and type declarations that prescribes a way to manage the resources of a heterogeneous machine network. The application describes the tasks t...
متن کاملDeveloping Applications for Heterogeneous Machine Networks: The Durra Network
In this paper we describe Durra, a language designed to Support PMS-level programming, and its runtime environment. Users of networks of heterogeneous processors are concerned with allocating specialized resources to tasks of medium to large size. They need to create processes, which are instances of tasks, allocate these processes to processors, and specify the communication patterns between p...
متن کاملDurra: an integrated approach to software specification, modeling and rapid prototyping
Software specification, modeling, and prototyping activities are often performed at different stages in a software development project by individuals who use different specialized notations. The need to manually interpret and transform information passed between stages can significantly decrease productivity and can serve as a potential source of error. Durra is a nonprocedural language designe...
متن کاملLevel of Grammatical Proficiency and Acquisition of Functional Projections: The case of Iranian learners of English language
Unlike Lexical Projections, Functional Projections (Extended Projections) are more of an ‘abstract’ in nature. Therefore, Functional Projections seem to be acquired later than Lexical Projections by the L2 learners. The present study investigates Iranian L2 learners’ acquisition of English Extended Projections taking into account their level of grammatical proficiency. Specifically, the aim is ...
متن کاملThe Effect of Task Sequencing on the Writing Fluency of English as Foreign Language Learners
This study investigated the effect of sequencing tasks from simple to complex along +/- reasoning demands on fluency in writing task performance of English as Foreign Language (EFL) learners. The participants of this study included 90 intermediate EFL learners from three intact class divisions at the Islamic Azad Uni- versity, Shahr-e-Qods Branch. They were distributed in three groups: Experime...
متن کامل