The revised papers presented were carefully selected from a wealth of papers submitted. The papers are organised in topical sections on biologically inspired solutions to parallel processing problems:
Using task scheduling techniques, three challenges to the effective usage of H-CMPs are addressed: HEFT-MEG schedules reconfigurations using a novel back-tracking algorithm to evaluate how different reconfiguration decisions affect previously scheduled tasks.
In both simulation and real execution, HEFT-MEG successfully schedules reconfiguration allowing the architecture to adapt to changing application requirements. We find that using a CtS and RtS in concert improves the performance of several application types in real execution on the Cell processor.
To enhance fault tolerance, we modify the previously proposed hybrid scheduling system to accommodate variability in the processor availability.
FTRM examines the current processor availability and remaps tasks to the available set of processors. RRS changes the reconfiguration schedule so that the reconfigurations more accurately reflect the new hardware capabilities.
The proposed hybrid scheduling system enables application performance to gracefully degrade when processor availability diminishes, and increase when processor availability increases. Computer Science; Electrical Engineering Keywords: Optical wavelength division multiplexing WDM networks are expected to form the next-generation backbone network and to fulfill the insatiable appetite for bandwidth.
Wavelength routed WDM optical networks offer the granularity of switching at a fiber, waveband, or a wavelength level. All-optical packet switching is still deemed technically infeasible and its competitiveness as a backbone technology is debatable.
Optical burst switching OBS presents itself as a promising technology for bridging the gap between optical wavelength switching and optical packet switching.
OBS operates at the sub-wavelength level and is designed to improve the bandwidth utilization of wavelengths by exploring statistical multiplexing to deal with bursty traffic, and is therefore more resource efficient than optical wavelength switching.
In OBS networks, arriving data packets e.
A burst control packet CP is sent on a control channel ahead of the data burst to reserve resources and configure the switches along the route traversed by the data burst.
In this dissertation, Java multithreaded genetic algorithm in solving computer science essay will explore several important and challenging issues in OBS networks in order to improve the utilization of network resource.
To reduce the switching overhead, small bursts may be groomed to reduce resource waste and switching penalty. We have studied the per-hop burst grooming problem where bursts with the same next hop may be groomed together to minimize the number of formed larger bursts and strike a proper balance between burst grooming and grooming cost, assuming all the network nodes have the grooming capability.
In order to reduce computation overhead and processing delay incurred at the core nodes, we assume that grooming can only be performed at edge nodes and the core node can send a burst to multiple downstream links, that is, the core node has light-splitting capability.
Optical signal transmission quality is subject to various types of physical impairment introduced by optical fibers, switching equipment, or other network components.
The signal degradation due to physical impairment may be significant enough such that the bit-error rate of received signals is unacceptably high at the destination, rendering the signal not usable.
Based on earlier work, we have studied scheduling and QoS provisioning problems in OBS networks, taking physical impairments into consideration. In the context of the JET signaling protocol, we have studied the burst scheduling problem and proposed three effective burst scheduling algorithms in OBS networks, taking into account physical impairment effects.
Because the offset time of bursts varies in OBS networks, the voids or fragmentation on the channels in the outgoing links can severely degrade the network throughput and blocking probability performance, if not dealt with carefully. We study the burst scheduling problem and propose an impairment aware scheduling algorithm in DOBS networks.
QoS provisioning is an important issue in OBS networks. We have dealt with relative QoS support problem and proposed a QoS provisioning algorithm subject to the physical impairment constraints.
A high-priority burst requires a better quality of service in terms of blocking probability, and at the same time, the transmission of the burst should satisfy physical impairment constraints. As a frequency hopping based system, however, constructing a large scale network using Bluetooth technology presents a real challenge.
Modern Platform for Parallel Algorithms Testing parallel genetic algorithm java source code and parallel sort algorithm java and parallel genetic algorithm java and. Implementation of a parallel genetic algorithm on a cluster of workstations: The Travelling Salesman Problem, a case study.- Structural biology metaphors applied to . An efficient implementation of quick sort algorithm based on java muti-thread technology was proposed for multi-core computer system. According to Divide-and-Conquer method, it divided the data into a number of segments, and then merged the segments into .
This dissertation explores this problem and presents several feasible solutions. Firstly, bridge devices, which connect multiple piconets into a connected scatternet by participating in a time division multiplex basis in adjacent piconets, need to be carefully coordinated to enable smooth operations of the scatternet; secondly, the lengthy device discovery and link setup phases make scatternets impossible to maintain, without disruptive interruptions to normal data communications.
To address the bridge coordination problem efficiently and effectively, this dissertation proposes a novel distributed dichotomized bridge scheduling algorithm, coupled with an adaptive Rendezvous Window based polling scheme.
A new method for device discovery is also introduced to address the scatternet formation and maintenance problems. The proposed algorithms have been tested on our own Bluetooth simulator UCBT which models the lower part of Bluetooth stack in detail and provides several example large scale scatternet configurations for executing our proposed scheduling algorithms.
Extensive simulations have been conducted, and the performance results illustrate that large scale scatternets can operate efficiently. This dissertation also looks at applying scatternets to sensor networks by constructing a nodes scatternet in our simulator.
The simulation results illustrate that Bluetooth scatternet can be a good choice for low duty cycle sensor networks. The scheduling technique developed in Bluetooth scatternet can be applied to newly introduced IEEE This is a new standard introduced to save consumed energy by defining a beacon controlled low duty cycle.
Beacon collision problem presents a real challenge in any large sensor network setting. By applying scatternet technique, each adjacent cell may operate in a different channel to avoid timing critical beacon collision.Modern Platform for Parallel Algorithms Testing parallel genetic algorithm java source code and parallel sort algorithm java and parallel genetic algorithm java and.
Write a C++ program in a file named change. cpp that asks the user to input a number of cents between 0 and 99 cents and outputs the number of quarters, dimes, nickels, and . Finally, the algorithm is implemented in Java and applied for authentication of employee data in a hypothetical organization.
The methodology is general and can be applied to any task where authentication is required. Index Terms— Genetic Algorithm, Cross-over, Mutation, Barcode, Encoding. The paper is organized as follows. Artificial intelligence (AI) is a branch of computer science that models the human ability of reasoning, usage of human language and organization of knowledge, solving problems and practically all other human intellectual abilities.
Java Multithreaded Genetic Algorithm In Solving Computer Science Essay - Essay Example Time table problem is a kind of scheduling problems with many variations.
It defines a class of hard-to-solve constrained optimization problems of combinatorial nature (Bhaduri, , p). Java Multithreaded Genetic Algorithm In Solving Computer Science Essay - Essay Example Time table problem is a kind of scheduling problems with many variations.
It defines a class of hard-to-solve constrained optimization problems of combinatorial nature (Bhaduri, , p).