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Project Evaluation for Parallelizing an Image compression Toolbox Version 1.0

Project Evaluation

for Parallelizing an Image compression Toolbox

Version 1.0

Submitted in partial fulfillment of the requirements for the degree MSE

Hadassa Baker

CIS 895 –MSE Project

Kansas State University

1.0 Project Duration

The following table shows the starting and finishing date for each phase estimated in the planning phase of the project.

Phase Estimated Start Date Estimated End Date Number of Days

1 5/17/2004 8/20/2004 93

2 9/1/2004 10/20/2004 49

3 10/29/200

4 11/30/2004 32

The following table shows the actual start and finish time

Phase Actual Start Date Actual End Date Number of Days

1 5/17/2004 9/16/2004 120

2 9/17/2004 11/08/2004 52

3 11/09/200

4 12/10/2004 31

For the first phase the estimated days were shorter than the actual days. That caused a shift in the schedule. However, for the second and third phases, the estimated date is close to the actual date.

2.0 Tasks Review

In the first phase considerable time was spent was researching parallel programming methodology for the project. Also, a lot of time was spent on documentation and on setting up website.

On the second phase considerable time was spent on project design and formal specification of one aspect of the project design using spin. Time was also devoted for documentation and researching the zthread library.

In the third phase a lot of time was spent studying about the zthread library. Writing source code and debugging required a considerable amount of time. Debugging the parallel program was tricky and time consuming. Since the g++ on the Linux system was used for development, tracing errors was difficult.

3.0 Number of Lines of code

Most of the source code writing involved reorganizing the original sequential code and creating tasks (runnable classes) out of them that can be executed independently with the zthread library. The Monitor classes (Monitor and Monitor1) are the new classes added to the parallel code. The following table shows the total number of lines of source code added.

Source code Number of lines of source code

added

Wavelet class 103

Wavelet Main 235

Monitor class 480

Total 818

4.0 Cost Estimate

In the planning phase of the project approximately 1300 lines of source code was estimated, and the project was estimated to take 3.2 month. The actual number of new and modified lines of source code added to the project is about 818. The actual size is smaller than the estimated size. The main reason for that is that most of the source code for the program was taken from the original sequential source code. New source code that was written was mainly for threads synchronization purpose. However, it takes time and effort to add to and modify the original source code.

The estimated time for the project is shorter than the actual time. The actual time from the beginning to the finish of the project is over 6 month. This is due to the fact that the developer has a full time job, and works on the project on part time basis.

5.0 Problems Encountered

5.1 Installing and using the zthread library

The zthread library is a platform independent multithreading library. Therefore, the developer planned on using Microsoft C++ for development and debugging, and

Linux for testing. However, that plan did not work as desired, because problems

occur when installing the zthread library on the windows system. Fortunately, there were no problems in installing the zthead library on the Linux system. Therefore, debugging was done on the Linux system, which was very time consuming.

5.1 Debugging

As mentioned above debugging was done on a Linux system, and was very time consuming. Multithreaded programs are by nature difficult to debug. Since multiple threads are operating at once, it is difficult to trace a bug. The best solution is to have a sound design that does not introduce a bug in the program, and to review the source code carefully.

6.0Lessons Learnt

6.1Usefulness the design verification

The developer learnt that formal verification of the architecture design is very useful in developing a parallel program. Formal verification catches design errors that would potentially create bugs in the program, and those bug can be much more difficult to correct if not corrected in the design phase. Design verification is especially important if there is lots of communication and data sharing between threads .

6.2 Usefulness of keeping it simple

The developer learnt that it is better to keep the design simple if the desired goal is to increase execution speed. Data sharing between threads requires the use of mutex and guards to prevent multiple threads from accessing a resource at the same time. Much use of mutex, as observed in this project, causes delays that defeat the purpose of improving execution speed. It would be better to run those sections sequentially.

7.0 Reference:

Bruce Eckel, Chuck Allison. Thinking in C++. Vol 2. Pearson Prentice Hall, 2004. https://www.doczj.com/doc/5d5422846.html,/imagecmp/icomptbx.htm

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目录 Project入门 (3) 1.1 使用Project管理项目 (4) 1.2 启动Project Standard (5) 1.3 启动Project Professional (8) 1.4 视图 (13) 1.5 报表 (18) 1.6 创建新项目计划 (21) 1.7 设置非工作日 (23) 1.8 输入项目属性 (25) 1.9 小结 (26) 创建任务列表 (27) 2.1 输入任务 (27) 2.2 估计工期 (29) 2.3 输入里程碑 (32) 2.4 分阶段组织任务 (33) 2.5 链接任务 (35) 2.6 记录任务 (38) 2.7 检查任务工期 (40) 2.8 小结 (42) 设置资源 (43) 3.1 设置人员资源 (43) 3.2 设置设备资源 (46) 3.3 设置材料资源 (48) 3.4 设置成本资源 (49) 3.5 输入资源费率 (49) 3.6 为单个资源调整工作时间 (51) 3.7 记录资源 (54) 3.8 小结 (54)

Project入门 本章内容: ?了解Microsoft Office Project 2007产品系列 ?了解优秀的项目管理工具如何帮助完成任务 ?启动Project Standard或Project Professional,辨别Project窗口的主要组成部分 ?使用视图以不同方式显示项目计划的详细信息 ?使用报表打印项目计划的详细信息 ?创建项目计划和输入项目开始日期 ?设置项目的工作和非工作时间 ?输入项目计划属性 项目管理是一门实践丰富的艺术与科学。不论您正在参与项目管理,还是将要进行项目管理,阅读本书都是一个绝佳的学习机会。 就其核心而言,项目管理是一种融合技能与工具的“工具箱”,有助于预测和控制组织工作的成果。除了项目,组织还有其他工作。项目(如电影项目)与持续业务(Ongoing Operation)(如工资单服务)截然不同,因为项目是临时性的工作,产生唯一性的成果或最终结果。凭借优秀的项目管理系统,您可以解决以下问题: ?要取得项目的可交付成果,必须执行什么任务,以何种顺序执行? ?应于何时执行每一个任务? ?谁来完成这些任务? ?成本是多少? ?如果某些任务没有按计划完成,该怎么办? ?对那些关心项目的人而言,交流项目详情的最佳方式是什么? 良好的项目管理并不能保证每个项目一定成功,但不良的项目管理却会是失败的成因之一。 在您的项目管理工具箱中,Microsoft Office Project 2007应是最常用的工具之一。本书会介绍如何使用Project建立项目计划(包括任务和资源的分配),如何使用Project中扩展的格式化特性来组织和格式化项目计划的详细信息,如何跟踪实际工作与计划是否吻合,以及当工作与计划脱轨时如何采取补救措施。 如果是刚刚接触项目管理,可以在此处暂停,先阅读附录A,然后再继续阅读本章。这样做不会占用多长时间,有助于恰当地评估和组织自己的项目日程安排需求,进而利用Project建立稳固的计划。 本书的大部分练习围绕着一个虚构的电影公司 (Southridge Video and Film Productions)展开。您任职于电影公司的可能性不大,但您肯定看过电视广告或电影。每个电视广告或电影就是一个项目,事实上,有一些还是相当复杂的项目,涉及成百上千的资源但时间限制却很严苛。Southridge Video遇到的许多日程安排问题,您可能都会觉得似曾相识,如此一来,

project项目管理软件实例分享

project项目管理软件实例分享 导读: 亿图Edraw Project是一款功能强大的企业级国产项目管理软件,可以为企业提供优质的项目管理服务,它已经被越来越多的大型企业所接受,逐渐成为项目管理者必备的管理工具。本文就来为大家介绍一下这款软件的使用。 免费获取甘特图软件:https://www.doczj.com/doc/5d5422846.html,/project/gantt/ Edraw Project 软件的下载与安装 获取Edraw Project软件,是开启项目管理之前的准备工作。从Edraw Project官方网站,即可免费下载这款软件。 完成下载后,双击【EdrawProject.exe】文件,开始确认安装。整个安装过程仅需1分钟左右。

Edraw Project 软件的使用 甘特图是项目管理领域里,最为常用的一种图示。因此,我们可以使用Edraw Project绘制甘特图。在绘制甘特图的过程,你将学会如何新建甘特图,如何添加任务信息,如何生成各类报表等。 1、新建甘特图 新建甘特图的操作较为简单,双击运行软件,单击新建,即可打开画布。 2、添加任务信息 添加任务的方法有三种,分别是顶部菜单栏按钮、右键菜单按钮和快捷键按钮。每一行内容都可以进行编辑。

温馨提示: Edraw Project软件顶部“开始”菜单中拥有丰富的编辑选项,比如插入链接、添加里程碑、降级任务等等,通过这些功能按键,只需简单几步操作就能轻松实现你想要的效果。 3、编辑资源 资源编辑功能是一种高级的甘特图功能,项目管理者可以在该面板设置资源的类型,成本价格以及名称等等。一个任务中会包含多个不同的资源,这些资源的组合会生成各类的报告。

牛津译林版高中英语必修一高一英语试卷 (2)

2012-2013学年度第一学期期中调研测试 高一英语试卷 (考试用时:120分钟满分:120分) 注意事项: 1、本试卷共分两部分,第Ⅰ卷为选择题,第Ⅱ卷为非选择题。 2、所有试题的答案均填写在答题纸上,答案写在试卷上的无效。 第I卷选择题(三部分,共75分) 第一部分:听力理解(共两节,满分20分) 做题时,先将答案划在试卷上。录音内容结束后,你将有两分钟的时间将试卷上的答案转涂到答题卡上。 第一节(共5小题;每小题1分,满分5分) 听下面5段对话。每段对话后有一个小题,从题中所给的A、B、C三个选项中选出最佳选项,并标在试卷的相应位置。听完每段对话后,你都有10秒钟的时间来回答有关小题和阅读下一小题。每段对话仅读一遍。 1. How many colds have the man and his wife had? A. Ten. B. Eight. C. Six. 2. How is the woman’s mother now? A. She is quite healthy. B. She is seriously ill. C. She is much better. 3. What does the woman mean? A. Kelly’s perhaps near. B. Kelly forgot to take her bag. C. Kelly might be having lunch now. 4. What does the woman probably do? A. She is a headmaster. B. She is a student. C. She is a reporter. 5. What do we know about the woman? A. She didn’t work hard. B. She cheated in her English test. C. She didn’t pass her English test.

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