网络操作系统课程是计算机网络专业的核心课程,DNS服务器和活动目录是学习其他服务器的基础。文章以windows server服务器中的Active Directory和Linux中的BIND为例,利用Oracle VM Virtualbox虚拟机软件搭建实验平台,进行域控分离系统...网络操作系统课程是计算机网络专业的核心课程,DNS服务器和活动目录是学习其他服务器的基础。文章以windows server服务器中的Active Directory和Linux中的BIND为例,利用Oracle VM Virtualbox虚拟机软件搭建实验平台,进行域控分离系统的设计,以达到仿真实验教学的目的。展开更多
In the field of supercomputing, one key issue for scal-able shared-memory multiprocessors is the design of the directory which denotes the sharing state for a cache block. A good direc-tory design intends to achieve t...In the field of supercomputing, one key issue for scal-able shared-memory multiprocessors is the design of the directory which denotes the sharing state for a cache block. A good direc-tory design intends to achieve three key attributes： reasonable memory overhead, sharer position precision and implementation complexity. However, researchers often face the problem that gain-ing one attribute may result in losing another. The paper proposes an elastic pointer directory （EPD） structure based on the analysis of shared-memory applications, taking the fact that the number of sharers for each directory entry is typical y smal . Analysis re-sults show that for 4 096 nodes, the ratio of memory overhead to the ful-map directory is 2.7%. Theoretical analysis and cycle-accurate execution-driven simulations on a 16 and 64-node cache coherence non uniform memory access （CC-NUMA） multiproces-sor show that the corresponding pointer overflow probability is reduced significantly. The performance is observed to be better than that of a limited pointers directory and almost identical to the ful-map directory, except for the slight implementation complex-ity. Using the directory cache to explore directory access locality is also studied. The experimental result shows that this is a promis-ing approach to be used in the state-of-the-art high performance computing domain.展开更多
又是一个金秋九月,又是一次盛大的聚会。微软TechEd2002与你我相约北京。百门经典课程,百位令人敬仰的专家,和您共同分享一年来微软公司推出的新技术、新概念。本刊作为本次大会指定的专业技术杂志,将向您全面报道本次大会。本期杂志我...又是一个金秋九月,又是一次盛大的聚会。微软TechEd2002与你我相约北京。百门经典课程,百位令人敬仰的专家,和您共同分享一年来微软公司推出的新技术、新概念。本刊作为本次大会指定的专业技术杂志,将向您全面报道本次大会。本期杂志我们将和您一起分享即将在TechEd2002上推出的Windows方面的部署和管理的若干经典课程。这些课程有的是微软公司最新技术的预览,例如:Windows Media Service、IIS6.0的预览;有的是针对Windows 2000推出4年来的一些困扰广大网络管理员的问题的解决方案,例如:组策略在企业中的部署和实施、Active Directory部署热点关注等。相信通过这个专题大家都会有所收获。展开更多
As a prominent journalist and entrepreneur living in Shanghai from 1911 to 1937,the“China Hand”Carl Crow(1884-1945)wrote a lot of works on Chinese newspapers,business,religion and culture.His advertising agency Carl...As a prominent journalist and entrepreneur living in Shanghai from 1911 to 1937,the“China Hand”Carl Crow(1884-1945)wrote a lot of works on Chinese newspapers,business,religion and culture.His advertising agency Carl Crow,Inc.published four editions of Newspaper Directory of China in the year of 1921,1931,1932 and 1935 respectively,and the most popular was the edition of 1935,which had a positive impact on the commercialization and development of the China’s newspaper industry.展开更多
With the deepening application of geographic information web services, as a significant part, geographic information directory service sets up a service transaction platform between the service providers and the servi...With the deepening application of geographic information web services, as a significant part, geographic information directory service sets up a service transaction platform between the service providers and the service requestors, providing one-stop registration, access and management functions of geographic information web services, so it is very important to carry out the research on geographic information directory service. According to the domestic and overseas metadata standards, the service expression-oriented metadata information model for geographic information web service is established, and the discovery mechanism dominated by geographic information service registration and active discovery is realized accordingly. After that, overall design of directory service model is made, and finally the research results are integrated into the geographic information service software NewMapServer and deployment test is made under the Google Cloud Environment Google App Engine, providing a certain reference for sharing the Smart City construction achievements.展开更多
文摘网络操作系统课程是计算机网络专业的核心课程,DNS服务器和活动目录是学习其他服务器的基础。文章以windows server服务器中的Active Directory和Linux中的BIND为例,利用Oracle VM Virtualbox虚拟机软件搭建实验平台,进行域控分离系统的设计,以达到仿真实验教学的目的。
基金supported by the National Natural Science Foundation of China(6123200961370059)+1 种基金the High Technology Research and Development Program of China(863 Program)(2011AA01A205)the Fund of the State Key Laboratory of Software Development Environment(SKLSDE2012ZX06)
文摘In the field of supercomputing, one key issue for scal-able shared-memory multiprocessors is the design of the directory which denotes the sharing state for a cache block. A good direc-tory design intends to achieve three key attributes： reasonable memory overhead, sharer position precision and implementation complexity. However, researchers often face the problem that gain-ing one attribute may result in losing another. The paper proposes an elastic pointer directory （EPD） structure based on the analysis of shared-memory applications, taking the fact that the number of sharers for each directory entry is typical y smal . Analysis re-sults show that for 4 096 nodes, the ratio of memory overhead to the ful-map directory is 2.7%. Theoretical analysis and cycle-accurate execution-driven simulations on a 16 and 64-node cache coherence non uniform memory access （CC-NUMA） multiproces-sor show that the corresponding pointer overflow probability is reduced significantly. The performance is observed to be better than that of a limited pointers directory and almost identical to the ful-map directory, except for the slight implementation complex-ity. Using the directory cache to explore directory access locality is also studied. The experimental result shows that this is a promis-ing approach to be used in the state-of-the-art high performance computing domain.
文摘又是一个金秋九月,又是一次盛大的聚会。微软TechEd2002与你我相约北京。百门经典课程,百位令人敬仰的专家,和您共同分享一年来微软公司推出的新技术、新概念。本刊作为本次大会指定的专业技术杂志,将向您全面报道本次大会。本期杂志我们将和您一起分享即将在TechEd2002上推出的Windows方面的部署和管理的若干经典课程。这些课程有的是微软公司最新技术的预览,例如:Windows Media Service、IIS6.0的预览;有的是针对Windows 2000推出4年来的一些困扰广大网络管理员的问题的解决方案,例如:组策略在企业中的部署和实施、Active Directory部署热点关注等。相信通过这个专题大家都会有所收获。
文摘As a prominent journalist and entrepreneur living in Shanghai from 1911 to 1937,the“China Hand”Carl Crow(1884-1945)wrote a lot of works on Chinese newspapers,business,religion and culture.His advertising agency Carl Crow,Inc.published four editions of Newspaper Directory of China in the year of 1921,1931,1932 and 1935 respectively,and the most popular was the edition of 1935,which had a positive impact on the commercialization and development of the China’s newspaper industry.
文摘With the deepening application of geographic information web services, as a significant part, geographic information directory service sets up a service transaction platform between the service providers and the service requestors, providing one-stop registration, access and management functions of geographic information web services, so it is very important to carry out the research on geographic information directory service. According to the domestic and overseas metadata standards, the service expression-oriented metadata information model for geographic information web service is established, and the discovery mechanism dominated by geographic information service registration and active discovery is realized accordingly. After that, overall design of directory service model is made, and finally the research results are integrated into the geographic information service software NewMapServer and deployment test is made under the Google Cloud Environment Google App Engine, providing a certain reference for sharing the Smart City construction achievements.
