Đang chuẩn bị liên kết để tải về tài liệu:
báo cáo hóa học:" Research Article Improving the Performance of Bus Platforms by Means of Segmentation and Optimized Resource Allocation"

Tuyển tập báo cáo các nghiên cứu khoa học quốc tế ngành hóa học dành cho các bạn yêu hóa học tham khảo đề tài: Research Article Improving the Performance of Bus Platforms by Means of Segmentation and Optimized Resource Allocation | Hindawi Publishing Corporation EURASIP Journal on Embedded Systems Volume 2009 Article ID 867362 14 pages doi 10.1155 2009 867362 Research Article Improving the Performance of Bus Platforms by Means of Segmentation and Optimized Resource Allocation T. Seceleanu 1 V. Leppanen 2 and O. S. Nevalainen2 1ABB Corporate Research Automation Networks Department SE-72178 Vasteras Sweden 2 Department of Information Technology University of Turku and TUCS FIN-20014 Turku Finland Correspondence should be addressed to T. Seceleanu tiberiu.seceleanu@se.abb.com Received 8 August 2008 Revised 11 January 2009 Accepted 5 April 2009 Recommended by Leonel Sousa Consider a processor organization consisting of a number of client modules and server modules jointly called devices like memory units and arithmetic-logic processing units. Suppose that these devices are interconnected with a bus which is segmented in such a way that devices connected to a particular segment can communicate in parallel to the data transfer operations going on in the other segments. This is achieved by a control logic which is able to reserve a continuous subsequence of the segments necessary to establish a path from the source to the target device. Given the frequency of data transfer operations between the devices our task is to determine an efficient segmentation and segment-to-device assignment of this on-chip architecture. This task is formulated as an optimization problem which considers the amount of data transfer operations performed via the bus segments. The problem turns out to be NP hard but we propose efficient local search-based heuristics for it. The heuristics are applied to sample cases and the outcome is an improved performance in terms of a shorter execution time. Copyright 2009 T. Seceleanu et al. This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use distribution and reproduction in any medium provided the original work is .