Multiprocessing is already prevalent in servers, where multiple clients present an obvious source of thread level parallelism. The case for multiprocessing is less clear for desktop applications, however processor architects are already designing processors that count on the availability of concurrently runnable threads. In this paper we examine a wide variety of existing desktop workloads (ove...

An adaptive run time scheduling approach to parallel algebraic computation is suggested. Study of a toy example, the factorial function, illustrates the need for such an approach on an asynchronous multiprocessing system. The example is run in several parallelized variants on two distinct implementations of ALDES/SAC2 on a Sequent Symmetry computer.

Parallel and multiprocessing algorithms break down significant numerical problems into smaller subtasks, reducing the total computing time on multiprocessor multicore computers. programming is well supported in proven languages such as C Python, which are suited to “heavy-duty” computational tasks. Historically, Python has been regarded a strong supporter of parallel due global interpreter lock...

Ultra-low-power protocol handling is indispensable to realize and sustain the communication in ad hoc network established by battery-operated devices, especially in emergent situations. To realize the ultra-low-power, real-time multiprocessing essential for the protocol handling should be realized with essential power consumption in which power consumption is confined into only target program e...

This paper describes an implementation of the UNIX(TM) operating system for IBM System/370 computers. In this implementation an underlying Resident Supervisor, adapted from an existing IBM control program, provides machine control and multiprogramming; while a UNIX System Supervisor, adapted from the standard UNIX system kernel, provides the UNIX system environment. This implementation supports...

To realize a secure networking infrastructure, the author is carrying out CUE (Coordinating Users’ requirements and Engineering constraints) project with a network carrier and a VLSI manufacture. Since CUE-series data-driven processors developed in the project were specifically designed to be an embedded programmable component as well as a multi-processor element, particular design consideratio...

Any multiprocessing facility must include three features: elementary exclusion, data protection, and process saving. While elementary exclusion must rest on some hardware facility (e.g., a test-and-set instruction), the other two requirements are fulllled by features already present in applicative languages. Data protection may be obtained through the use of procedures (closures or funargs), an...

This paper discusses the design and implementation of the attached processor (AP) support first available in Release 4 of vM/ 370. The term attached processor in this context refers to the specific implementation on Systed370 Models 158 and 168 and on the 3031 processor of an asymmetric processor configuration. This implementation comprises one central processing unit (CPU) with full execution,...

Since initiating the information technology industry-wide transition from bipolar to CMOS technology with the first generation of S/390@ processors in 1994, IBM reached another major milestone with the introduction of the third generation in September 1996. The balanced system and cache structure and the modularity of the components of Generation 3 support a wide performance range from a unipro...

1989 Summary An approach to automate the programming and operation of tree-structured networks of multiprocessor systems is discussed. A conceptual, knowledge-based operating environment is presented, and requirements for two major technology elements are identified as follows: (I) An intelligent information translator is proposed for implementing information transfer between dissimilar hardwar...