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In this work we present the Internet Backplane Protocol (IBP), a middleware created to allow the sharing of storage resources, implemented as part of the network fabric. IBP allows an application to control intermediate data staging operations explicitly. As IBP follows a very simple philosophy, very similar to the Internet Protocol, and the resulting(More)
The Internet backplane protocol, or IBP, supports logistical networking to allow applications to control the movement and storage of data between nodes. T o ensure a robust and scalable network, early designers of the Internet chose a stateless model: Routers transfer data statelessly, and routing algorithms, which require only that the routers behave(More)
In this paper, we discuss requirements for integrating dynamic performance information from the Network Weather Service (NWS) into the Grid Information Service infrastructure (GIS). We describe the object model that NWS uses internally and provide some rationale for its structure. Finally , we present the NWS's implementation of a caching LDAP daemon that(More)
In the area of network monitoring a lot of tools are already available to measure a variety of metrics. However, these tools are often limited to a single administrative domain so that no established methodology for the monitoring of network connections spanning over multiple domains currently exists. In addition , these tools only monitor the network from(More)
This paper presents program transformations directed toward improving communication-computation overlap in parallel programs that use MPI's collective operations. Our transformations target a wide variety of applications focusing on scientific codes with computation loops that exhibit limited dependence among iterations. We include guidance for developers(More)
Internet worm spread is a phenomenon involving millions of hosts, who interact in complex and diverse environment. Scanning speed of each infected host depends on its resources and the defenses at work in its network. Aggressive worms further interact with the underlying Internet topology .. the dynamics of the spread is constrained by the limited bandwidth(More)
This paper describes a new technique in the Network Weather Service for producing multi-variate forecasts. The new technique uses the NWS's univariate forecasters and emprically gathered Cumulative Distribution Functions (CDFs) to make predictions from correlated measurement streams. Experimental results are shown in which throughput is predicted for long(More)