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'Wimpy nodes' could cut datacentre power bloat
News The cluster, called Fast Array of Wimpy Nodes (Fawn), is made up of large numbers of nodes of embedded processors, such as those used in netbooks, combined with between 2GB and 16GB of flash memory. Carnegie Mellon and Intel Labs researchers have...
[October 19, 2009, 9:23]
A Linux PC Cluster With Diskless Slave Nodes for Parallel Computing
White Papers With high-speed network cards, remote access will become as fast as the local disk access which will make diskless nodes a viable alternative to workstations in local LAN. In this paper, a SMP-based PC cluster consists of one master node and eight...
[February 2, 2009, 0:00]
AirEqualizer and Hidden Nodes: A Real Solution to a Virtual Problem
White Papers Of the numerous growing pains that can accompany the expansion of a wireless network, the issue of hidden nodes is one of the most difficult problems to solve. Despite ones best efforts, the communication breakdown between nodes can wreak havoc on...
[January 8, 2008, 0:01]
WebSphere Application Server for z/OS V6: Heterogeneous Cells - Cells With Nodes on Mixed Operating System Platforms
White Papers Now a WebSphere cell can span Sysplex environments, and it can span operating systems and have nodes on z/OS, Linux, Unix and Windows. The interaction between the Deployment Manager and the nodes is done over a TCP network.
[April 9, 2008, 1:02]
Detecting Critical Nodes for MANET Intrusion Detection Systems
White Papers Ad hoc routing protocols have been designed to efficiently reroute traffic when confronted with network congestion, faulty nodes, and dynamically changing topologies. Detecting malicious nodes in an open ad hoc network in which participating nodes...
[May 31, 2008, 1:01]
adding more nodes to a mesh actually increases throughput for everyone?!?
Talkback As somebody who has witnessed and replaced mesh systems with proper networks can vouch, the more you add the slower it gets.how can having more "nodes" on the same frequency ever make things faster.its a mesh myth.
[October 30, 2009, 23:24]
Flow Routing for Variable Bit Rate Source Nodes in Energy-Constrained Wireless Sensor Networks
White Papers This paper considers a two-tier wireless sensor network and focus on the flow routing problem for the upper tier Aggregation and Forwarding Nodes (AFNs). Assuming each AFN is equipped with directional antenna for transmission, it is interested in...
[August 23, 2007, 1:00]
A Low-Resource Public-Key Identification Scheme for RFID Tags and Sensor Nodes
White Papers Using a combination of new and established space-saving methods, the paper presents a full-fledged public key identification scheme, which is secure yet highly efficient. The 1024-bit scheme fits completely (including RAM) into 4682 gate...
[April 15, 2009, 1:22]
Adding New Nodes to Your Oracle RAC 10g Cluster on Linux
White Papers In most businesses, a primary business requirement for an Oracle Real Application Clusters (RAC) configuration is scalability of the database tier across the entire system - so that when the number of users increases, additional instances can be...
[May 18, 2007, 1:00]
The Virtual Node Layer: A Programming Abstraction for Wireless Sensor Networks
White Papers The Virtual Node Layer (VNLayer) programming abstraction provides programmable, predictable automata-virtual nodes-emulated by the low-level network nodes. This simplifies the design and rigorous analysis of applications for the wireless sensor...
[August 23, 2007, 1:00]
A Study of Dynamic Addressing Techniques in Mobile Ad Hoc Networks
White Papers Dynamic address assignment enables nodes in mobile ad hoc networks to obtain a routable address without the need for any explicit configuration. It provides a means for nodes to communicate without any centralized infrastructure, and provides a...
[August 13, 2007, 8:09]
AmICom - Middleware Support for Ambient Communication
White Papers Intelligent environments are based on services that are deployed on hardware nodes that communicate among each other. Actuator, sensor and information systems as well multimedia devices are distributed over a set of hardware nodes.
[January 16, 2009, 0:00]
SEAD: Secure Efficient Distance Vector Routing for Mobile Wireless Ad Hoc Networks
White Papers An ad hoc network is a collection of wireless computers (nodes), communicating among themselves over possibly multihop paths, without the help of any infrastructure such as base stations or access points.
[July 20, 2007, 1:00]
A Location-Aided Power-Aware Routing Protocol in Mobile Ad Hoc Networks
White Papers In multi-hop wireless ad-hoc networks, designing energy-efficient routing protocols is critical since nodes are power-constrained. However, it is also an inherently hard problem due to two important factors: First, the nodes may be mobile...
[August 23, 2007, 1:00]
Mobile Dynamic Reflective Context Aware Middleware for Seamless Interoperability of Routing Protocol and Service Discovery Protocol on Adhoc Smart Spaces With Performance Comparison
White Papers Smart spaces are Adhoc Networks composed of mobile devices, attenuators, sensors and other smart and dummy nodes capable of offering services to large number of users. As the user enters the smart space, his profile is analyzed by the sensor nodes...
[January 16, 2009, 0:00]
Multipath Routing Based Secure Data Transmission in Ad Hoc Networks
White Papers The specific characteristics of Mobile Ad Hoc NETworks (MANETs) make cooperation among all nodes and secure transmission important issues in its research. Misbehaving nodes with different intentions and capabilities would conduct various types of...
[August 10, 2007, 10:36]
Group Mobility and Partition Prediction in Wireless Ad-Hoc Networks
White Papers In wireless ad-hoc networks, network partitioning occurs when the mobile nodes move with diverse patterns and cause the network to separate into completely disconnected portions. Its occurrence can be attributed to the aggregate group motion...
[August 23, 2007, 1:00]
Micro Mobility and Internet Access Performance for TCP Connections in Ad Hoc Networks
White Papers In ad hoc mobile networks nodes typically communicate over wireless channels and are capable of movement. This paper evaluates a solution that allows mobile nodes to access the wired Internet and roam from base station to base station.
[May 12, 2006, 0:00]
A Performance Comparison of Linux and a Lightweight Kernel
White Papers This paper compares running the Linux operating system on the compute nodes of ASCI Red hardware to running a specialized, highly-optimized LightWeight Kernel (LWK) operating system. The authors have ported Linux to the compute and service nodes of...
[April 1, 2007, 1:00]
Scalable Localization in Wireless Sensor Networks
White Papers Localization, an important challenge in wireless sensor networks, is the process of sensor nodes self-determining their position. Clustering is utilized to select a subset of nodes to perform MDS and then extend their localization to the remaining...
[August 10, 2007, 10:37]
