CMPSCI 691R: Performance Evaluation

CMPSCI 691BB Project Report: A Framework for Intrinsically Motivated Agents

Cmpsci 691w Parallel and Concurrent Programming Lecture 7: Mar 1 7.2 Capriccio 7.2.1 Linked Stacks

Most of the server architectures introduced in the previous lecture cannot provide both good performance and the ease of programming. MT/MP (Multi-thread/Multi-process) architectures have big performance overhead from context switches and are subject to concurrency issues such as race conditions. Event-driven architectures SPED (single-process event-driven) and AMPED (asymmetric multiple event-...

Cmpsci 677 Operating Systems 23.1 Distributed File System 23.2 Network File System

Consistency is simpler to achieve in the remote access model than in the upload/download model, because in the former model all the requests are handled on the server, which ensures consistency is attained. As for the upload/download model, there might be multiple clients opening the same file simultaneously. Keeping multiple copies of the same file on different machines makes consistency more ...

CMPSCI 311: Introduction to Algorithms

Breadth-First Search. For a graph like the one in Figure 2.3, we can generally figure out the distance between two nodes by eyeballing the picture; but for graphs that are even a bit more complicated, we need some kind of a systematic method to determine distances. The most natural way to do this — and also the most e cient way to calculate distances for a large network dataset using a computer...

Herding BitTorrent Traffic away from Expensive ISP Links UMass CMPSCI Technical Repor UM-CS-2008-036

The steady increase in access link capacity of broadband subscribers coupled with the significant increase in traffic, partially due to popular peer-to-peer (P2P) file sharing applications, has had an adverse economic impact on last-mile Internet Service Providers (ISPs). Reducing the cost associated with P2P traffic has become a major issue for ISPs worldwide and has triggered several proposal...