2004年10月5日星期二

P2P Simulator survey

http://www.p2pjournal.com/

这个网站记录着很多好的p2p项目,到现在为止只有5期杂志,但是很值得一看。另外有很多其他的资源链接,对研究很有帮助

http://www.cs.unibo.it/bison/index.shtml
是一个欧洲的P2P项目。以下引用自它的主页:
BISON will explore the use of ideas derived from complex adaptive systems (CAS) to enable the construction of robust and self-organizing information systems for deployment in highly dynamic network environments. BISON will cast solutions to important problems arising in Ad-Hoc and Virtual networks, P2P and Grid computing systems as desirable global properties that systems should exhibit.

http://www.p2p-simulator.org/
是一个刚刚开始的blog,但是上面记录很多仿真器的资料和论文。

http://www.cs.unibo.it/projects/anthill/
这是一个让我着急的项目,他们时候很早就开始使用蚂蚁算法等相关的生物算法来解决P2P系统的自组织等问题了。我的研究不知道会不会有和他们冲突了。这两天没有时间看它了,过些时候再看看。以下引用自它的主页:
Recent peer-to-peer (P2P) systems are characterized by decentralized control, large scale and extreme dynamism of their operating environment. As such, they can be seen as instances of complex adaptive systems (CAS) typically found in biological and social sciences. Anthill is a framework to support the design, implementation and evaluation of P2P applications based on ideas such as multi-agent and evolutionary programming borrowed from CAS. An Anthill system consists of a dynamic network of peer nodes; societies of adaptive agents travel through this network, interacting with nodes and cooperating with other agents in order to solve complex problems. Anthill can be used to construct different classes of P2P services that exhibit resilience, adaptation and self-organization properties.


http://www.cs.berkeley.edu/~ravenben/tapestry/
这个项目倒是很早了,其主页上这样介绍:
In today's chaotic network, data and services are mobile and replicated widely for availability, durability, and locality. Components within this infrastructure interact in rich and complex ways, greatly stressing traditional approaches to name service and routing. We propose an alternative to traditional approaches called Tapestry. Tapestry is an overlay location and routing infrastructure that provides location-independent routing of messages directly to the closest copy of an object or service using only point-to-point links and without centralized resources. The routing and directory information within this infrastructure is purely soft state and easily repaired. Tapestry is self-organizing, fault-resilient, and load-balancing.


“An Extendible Open Source P2P Simulator”
文章来自http://www.p2pjournal.com/ November 2003。 上面综述了很多p2p simulator。 而详细讲解了NeuroGrid Simulator,这是一个sourceforge的开源项目。http://sourceforge.net/projects/neurogrid/ 但这个仿真器停在了2003年6月24日,但是它的cvs里面有最新的一些东西,而且论坛一直都有讨论。http://www.neurogrid.net 是这个项目的主页。

2004年10月4日星期一

拾到一串链子

买了一分杂志,黄昏的时候在湖边的长椅上慢慢的看。忽然发椅缝里面有一串链子。最上面是两个心拼成的一个形状,上面写着 “I love you”,下面一节写着一个“霞”字,想必是丢掉链子的那个人的名字了。再下面一个是个长方形,上面写着“你是猪”。这有些让人讶异,也许现在猪也是很可 爱的动物,可用供情侣之间这样的称呼了。链子的最后一节是两个小铃铛。

多么可爱的一对情侣,希望丢掉了链子,并没有让他们丢掉别的什么。