A Hybrid Static Dynamic Approach To Scheduling Stream Programs
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Author | : Ceryen C. Tan |
Publisher | : |
Total Pages | : 97 |
Release | : 2009 |
Genre | : |
ISBN | : |
Streaming languages such as Streamlt are often utilized to write stream programs that execute on multicore processors. Stream programs consist of actors that operate on streams of data. To execute on multiple cores, actors are scheduled for parallel execution while satisfying data dependencies between actors. In StreamIt, the compiler analyzes data dependencies between actors at compile-time and generates a static schedule that determines where and when actors are executed on the available cores. Statically scheduling actors onto cores results in no scheduling overhead at runtime and allows for sophisticated compile-time scheduling optimizations. Unfortunately, static scheduling has a number of severe limitations. The generated static schedule is inflexible and cannot be adapted to run-time conditions, such as cores that are unexpectedly unavailable. Static scheduling may also incorrectly load-balance cores due to inaccurate static work estimates. This thesis contributes a hybrid static/dynamic scheduling approach that attempts to address the limitations of static scheduling. Dynamic load-balancing is utilized to adjust the static schedule to run-time conditions and to correct load imbalances that might exist after static scheduling. Dynamic load-balancing is designed to add very little run-time overhead.
Author | : Haeseung Lee |
Publisher | : |
Total Pages | : 31 |
Release | : 2013 |
Genre | : Computer architecture |
ISBN | : |
Stream computing has emerged as an importantmodel of computation for embedded system applications particularly in the multimedia and network processing domains. In recent past several programming languages and embedded multi-core processors have been proposed for streaming applications. This thesis examines the execution and dynamic scheduling of stream programs on embedded multi-core processors. The thesis addresses the problem in the context of a multi-tasking environment with a time varying allocation of processing elements for a particular streaming application. As a solution the thesis proposes a two step approach where the stream program is compiled to gather key application information, and to generate re-targetable code. A light weight dynamic scheduler incorporates the second stage of the approach. The dynamic scheduler utilizes the static information and available resources to assign or partition the application across the multi-core architecture. The objective of the dynamic scheduler is to maximize the throughput of the application, and it is sensitive to the resource (processing elements, scratch-pad memory, DMA bandwidth) constraints imposed by the target architecture. We evaluate the proposed approach by compiling and scheduling benchmark stream programs on a representative embedded multi-core processor. We present experimental results that evaluate the quality of the solutions generated by the proposed approach by comparisons with existing techniques.
Author | : Vojin G. Oklobdzija |
Publisher | : CRC Press |
Total Pages | : 992 |
Release | : 2017-12-19 |
Genre | : Computers |
ISBN | : 0849386209 |
New design architectures in computer systems have surpassed industry expectations. Limits, which were once thought of as fundamental, have now been broken. Digital Systems and Applications details these innovations in systems design as well as cutting-edge applications that are emerging to take advantage of the fields increasingly sophisticated capabilities. This book features new chapters on parallelizing iterative heuristics, stream and wireless processors, and lightweight embedded systems. This fundamental text— Provides a clear focus on computer systems, architecture, and applications Takes a top-level view of system organization before moving on to architectural and organizational concepts such as superscalar and vector processor, VLIW architecture, as well as new trends in multithreading and multiprocessing. includes an entire section dedicated to embedded systems and their applications Discusses topics such as digital signal processing applications, circuit implementation aspects, parallel I/O algorithms, and operating systems Concludes with a look at new and future directions in computing Features articles that describe diverse aspects of computer usage and potentials for use Details implementation and performance-enhancing techniques such as branch prediction, register renaming, and virtual memory Includes a section on new directions in computing and their penetration into many new fields and aspects of our daily lives
Author | : Anup Kumar Das |
Publisher | : Springer |
Total Pages | : 158 |
Release | : 2018-01-03 |
Genre | : Technology & Engineering |
ISBN | : 3319693743 |
This book discusses analysis, design and optimization techniques for streaming multiprocessor systems, while satisfying a given area, performance, and energy budget. The authors describe design flows for both application-specific and general purpose streaming systems. Coverage also includes the use of machine learning for thermal optimization at run-time, when an application is being executed. The design flow described in this book extends to thermal and energy optimization with multiple applications running sequentially and concurrently.
Author | : Shuvra S. Bhattacharyya |
Publisher | : Springer Science & Business Media |
Total Pages | : 1099 |
Release | : 2010-09-10 |
Genre | : Technology & Engineering |
ISBN | : 1441963456 |
It gives me immense pleasure to introduce this timely handbook to the research/- velopment communities in the ?eld of signal processing systems (SPS). This is the ?rst of its kind and represents state-of-the-arts coverage of research in this ?eld. The driving force behind information technologies (IT) hinges critically upon the major advances in both component integration and system integration. The major breakthrough for the former is undoubtedly the invention of IC in the 50’s by Jack S. Kilby, the Nobel Prize Laureate in Physics 2000. In an integrated circuit, all components were made of the same semiconductor material. Beginning with the pocket calculator in 1964, there have been many increasingly complex applications followed. In fact, processing gates and memory storage on a chip have since then grown at an exponential rate, following Moore’s Law. (Moore himself admitted that Moore’s Law had turned out to be more accurate, longer lasting and deeper in impact than he ever imagined. ) With greater device integration, various signal processing systems have been realized for many killer IT applications. Further breakthroughs in computer sciences and Internet technologies have also catalyzed large-scale system integration. All these have led to today’s IT revolution which has profound impacts on our lifestyle and overall prospect of humanity. (It is hard to imagine life today without mobiles or Internets!) The success of SPS requires a well-concerted integrated approach from mul- ple disciplines, such as device, design, and application.
Author | : |
Publisher | : |
Total Pages | : 324 |
Release | : 2005 |
Genre | : Parallel programming (Computer science) |
ISBN | : |
Author | : Vojin G. Oklobdzija |
Publisher | : CRC Press |
Total Pages | : 1648 |
Release | : 2019-07-05 |
Genre | : Computers |
ISBN | : 1439833168 |
After nearly six years as the field's leading reference, the second edition of this award-winning handbook reemerges with completely updated content and a brand new format. The Computer Engineering Handbook, Second Edition is now offered as a set of two carefully focused books that together encompass all aspects of the field. In addition to complete updates throughout the book to reflect the latest issues in low-power design, embedded processors, and new standards, this edition includes a new section on computer memory and storage as well as several new chapters on such topics as semiconductor memory circuits, stream and wireless processors, and nonvolatile memory technologies and applications.
Author | : |
Publisher | : |
Total Pages | : 674 |
Release | : 1996 |
Genre | : Computer networks |
ISBN | : |
Author | : Udoh, Emmanuel |
Publisher | : IGI Global |
Total Pages | : 393 |
Release | : 2012-09-30 |
Genre | : Computers |
ISBN | : 1466620668 |
"This book provides insight into the current trends and emerging issues by investigating grid and cloud evolution, workflow management, and the impact new computing systems have on the education fields as well as the industries"--Provided by publisher.
Author | : Management Association, Information Resources |
Publisher | : IGI Global |
Total Pages | : 2134 |
Release | : 2012-04-30 |
Genre | : Computers |
ISBN | : 1466608803 |
"This reference presents a vital compendium of research detailing the latest case studies, architectures, frameworks, methodologies, and research on Grid and Cloud Computing"--