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Project Titles with Abstract for Computer Science - TamilYoungsters

MAIL SERVER DEVELOPMENT


1.     INTRODUCTION


              The project titled “Mail server development” is designed using Active Server Pages .NET with Microsoft Visual Studio.Net 2005 as front end and Microsoft SQL Server 2000 as back end  which works in .Net framework version 2.0. The coding
language used is C# .Net.

          This project includes an exclusive mail management system. It is designed to receive mails sent by others inside an organization as well as sent mails to other persons in the organization. It includes methods to delete unwanted mails received. It maintains the history of mails sent to other persons. All the features are included in this project allowing users to extensively manage their mails both incoming and outgoing in a particular organization. Efficient communication between persons in the organization is thus maintained effectively.


HBA: Distributed Metadata Management forLarge Cluster-Based Storage Systems

                                            Introduction

     
To create metadata of all the files in the network and finds a particular file using a search engine in fast and easy. Rapid advances in general-purpose communication networks have motivated the employment of inexpensive components to build competitive cluster-based storage solutions to meet the increasing demand of scalable computing. In the recent years, the bandwidth of these networks has been increased by two orders of magnitude. , which greatly narrows the performance gap between them and the dedicated networks used in commercial storage systems. 

Since all I/O requests can be classified into two categories, that is, user data requests and metadata requests, the scalability of accessing both data and metadata has to be carefully maintained to avoid any potential performance bottleneck along all data paths. This paper proposes a novel scheme, called Hierarchical Bloom Filter Arrays (HBA), to evenly distribute the tasks of metadata management to a group of MSs. A Bloom filter (BF) is a succinct data structure for probabilistic membership query. 

A straightforward extension of the BF approach to decentralizing metadata management onto multiple MSs is to use an array of BFs on each MS. The metadata of each file is stored on some MS, called the home MS.
                                                

                                                 Modules


1.       Login
2.      Finding Network Computers
3.      Meta Data Creation
4.      Searching Files
                                        

 FLEXIBLE ROLLBACK RECOVERY IN DYNAMIC HETEROGENIOUS GRID COMPUTING


                                      1. INTRODUCTION                                  



   This project  presents two fault-tolerance mechanisms called Theft-Induced Check pointing and Systematic event logging. These are transparent protocols capable of overcoming problems associated with both begin faults, i.e., crash faults, and node or subnet volatility. 

   Specifically, the protocols base the state of the execution on a dataflow graph, allowing for efficient recovery in dynamic heterogeneous systems as well as multithreaded applications. By allowing recovery even under different numbers of processors, the approaches are especially suitable for applications with a need for adaptive or reactionary configuration control. 

   The low-cost protocols offer the capability of controlling or bounding the overhead. A formal cost model is presented, followed by an experimental evaluation. It is shown that the overhead of the protocol is very small, and the maximum work lost by a crashed process is small and bounded.



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