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- WiMAX Relay Networks: Opportunistic Scheduling to Exploit Multiuser Diversity and Frequency Selectivity
- The paper studies the problem of scheduling in OFDMA-based relay networks with emphasis on IEEE 802.16j based WiMAX relay networks. In such networks, in addition to a base station, multiple relay stations are used for enhancing the throughput, and/or improving the range of the base station. The paper solves the...
- White papers 2008-09-19
Additional Resources
- Can open source software stop IT failure?
- I'm not so sure #1 is valid#1 is a variation of "many eyes make all bugs shallow"Does it help? Yes. But it also makes the implicit assumption that everyone that can view the code is competent to do so. So it goes back to resource allocation being an issue, if...
- Discussion threads 2009-10-26
- Modeling and Simulation of Scalable Cloud Computing Environments and the CloudSim Toolkit: Challenges and Opportunities
- Cloud computing aims to power the next generation data centers and enables application service providers to lease data center capabilities for deploying applications depending on user QoS Quality of Service requirements. Cloud applications have different composition, configuration, and deployment requirements. Quantifying the performance of resource allocation policies and application scheduling...
- White papers 2009-05-15
- Everybody loves virtualization
- Everybody loves virtualizationOne of my pet peevesVirtualization is useful for testing and development environments. It makes no sense whatsoever for production environments.UNIX has a very nice scheduler that is built to handle hundreds/thousands of processes at a time. It automatically doles out CPU and memory and I/O resources. It has...
- Discussion threads 2009-02-18
- Beware of the TrixBox
- Beware of the TrixBoxmisleading titlewell based on reading the article, it seems one ought not to necessarily beware of trixbox, but to beware of the HUD feature in certain circumstances or of poor network configuration and network interface settings.RE: Beware of the TrixBoxtrixbox deployments go well for those that have...
- Discussion threads 2009-02-09
- JOpt.SDK - route optimization library 2.2.7 (Windows)
- JOpt.SDK is a route optimization and planning Java library for automatic resource scheduling and transportation planning. It uses specialized genetic algorithms to calculate an optimized allocation of orders and stops to mobile resources. JOpt.SDK can solve problems like TSP travelling salesman problem or VRPTW vehicle routing problem.
- Software downloads 2008-12-10
- iPhone vs. Android development: Day 4
- It's day 4 of a 5-day course on iPhone programming. As before I'll be sharing my observations from the classroom on how development on the iPhone compares to Android development. The class is presented by Joe Conway from Big Nerd Ranch. [Read: Day 1, Day 2, Day...
- Blog posts 2008-11-20
- What is a company blogger good for?
- I often hear from companies that want to "be social" or "hire a blogger." Usually, there hasn't been any effort put into the question of what they'd like to accomplish from the effort, so I send out the following. Now, you can call me to talk when you have an...
- Blog posts 2008-06-30
- Parallels releases its Hypervisor -- on the Mac
- Today, virtualization vendor Parallels released the first version of its Server hypervisor for x86 hardware. The surprising thing about it is that it chose to go to release with its Mac version first. Parallels first came to market with its desktop-based virtualization products...
- Blog posts 2008-06-17
- Real-Time Video Multicast in WiMAX Networks
- IEEE 802.16e WiMAX is a promising new technology for broadband access networks. Amongst the class of applications that can be supported is real time video services (such as IPTV, broadcast of live events etc.). These applications are bandwidth hungry and have stringent delay constraints. Thus, scalable support for such applications...
- White papers 2008-04-29
- A Reconfigurable Architecture for Load-Balanced Rendering
- Commodity graphics hardware has become increasingly programmable over the last few years but has been limited to fixed resource allocation. These architectures handle some workloads well, others poorly; load-balancing to maximize graphics hardware performance has become a critical issue. This paper explores one solution to this problem using compile-time resource...
- White papers 2008-01-01
- Operating System Support for Space Allocation in Grid Storage Systems
- Shared temporary storage space is often the constraining resource for clusters that serve as execution nodes in wide-area distributed systems. At least one large national-scale computing grid has reported a failure rate of as high as thirty percent of submitted jobs, often due to accidentally filled shared storage spaces. Previous...
- White papers 2008-01-01
- A Multipath Background Network Architecture
- Background transfers, or transfers that humans do not actively wait on, dominate the Internet today. In today's best-effort Internet, background transfers can interfere with foreground transfers causing long wait times, thereby hurting human productivity. This paper presents the design and implementation of a background network, Harp, that addresses this problem....
- White papers 2008-01-01
- SLA-Based Resource Allocation in Cluster Computing Systems
- Resource allocation is a fundamental but challenging problem due to the complexity of cluster computing systems. In enterprise service computing, resource allocation is often associated with a Service Level Agreement SLA which is a set of quality of services and a price agreed between a customer and a service provider....
- White papers 2007-12-21
- First look at Firefox 3.0 Beta 1
- First look at Firefox 3.0 Beta 1I'll waitfor the final release, but everything you described sounds good to me.RE: First look at Firefox 3.0 Beta 1Looks good to me. Naturally, I'll wait as well. I'm not a bleeder, but this looks tempting.RE: First look at Firefox 3.0 Beta 1I use...
- Discussion threads 2007-11-20
- Solaris vs AIX: It's the technology
- From a technical perspective, of course, the right way to compare AIX to Solaris is to look at the technology. That might seem like it should be a lot of work but a long article by IBM's Shiv Dutta: AIX 5L Version 5.3: What's in it for you? on...
- Blog posts 2007-10-18
- Water, water everywhere, but only 2% to drink
- GoingGreen, Davis CA: where'll we get the water? The panel: Dennis Merens, Director North America, Dow Venture Capital group. John Sylvia, Partner, Texas Pacific Group. A. Judson Hill, Managine Director, Halifax Group. ------ The moderator begins by reminding us that water...
- Blog posts 2007-09-11
- Skype: we "don't blame Microsoft" for this "perfect storm"
- Skype's Villu Arak has just posted further clarifications on an earlier statement citing the cause of the recent, two-day Skype service interruption some understood as being precipitated by a surge of Skype re-connects after PCs worldwide automatically rebooted after a monthly Microsoft patch upgrade and install:We don’t blame anyone but...
- Blog posts 2007-08-21
- Security expert: Skype's explanation for outage is "line of bull"- do you agree?
- Security expert: Skype's explanation for outage is "line of bull"- do you agree?Not entirely accurate.For one, for every consumer's PC to be rebooting at 3AM, it would have to be on in the first place so unless there are a lot of electricity wasting Windows+Skype users (or a lot of...
- Discussion threads 2007-08-21
- Skype's outage: Lessons learned
- Skype's outage: Lessons learnedI'm reminded......of the stories about problems with water pressure when massive numbers of people flush their toilets at the same time during the Super Bowl. I have to wonder, though, about the applicability of your item #1. What does patch management have to do with anything? It...
- Discussion threads 2007-08-20
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