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Remote DMA (RDMA) engines are widely used in clusters/data-centres to improve the performance of data transfers between applications running on different nodes of a computing system. RDMAs are today supported by most network architectures and distributed programming models. However, with the massive usage of virtualization most applications will use RDMAs from virtual machines, and the virtualization...
Nowadays, network operators' amenities are populated with a huge amount of proprietary hardware devices for carrying out their core tasks. In this context, industry and academia have turned an eye to virtualization techniques to mitigate those effects and maximize potential earnings. Network Function Virtualization (NFV) aims to transform future network architectures by exploiting standard IT virtualization...
The high-density blade server provides an attractive solution for the rapid increasing demand on computing. The degree of parallelism inside a blade enclosure nowadays has reach up to hundreds of cores. In such parallelism, it is necessary to accelerate communications inside a blade enclosure. However, commercial products seldom set foot in the optimization based on hardware. A hyper-node controller...
This paper describes EXECO, a library that provides easy and efficient control of local or remote, standalone or parallel, processes execution, as well as tools designed for scripting distributed computing experiments on any computing platform. After discussing the EXECO internals, we illustrate its interest by presenting two experiments dealing with virtualization technologies on the Grid'5000 testbed.
A Web crawler is an important component of the Web search engine. It demands large amount of hardware resources to crawl data from the rapidly growing and changing Web. The crawling process should be performed continuously to maintain up-to-date data. This paper develops a new approach to speed up the crawling process on a multi-core processor by utilizing the concept of virtualization. In this approach,...
Virtual machine (VM) replication has been recognized as an inexpensive way of providing high availability on commodity hardware. Unfortunately, its impact on system performance is far from negligible and strategies have been proposed to mitigate this problem. In this paper we take a look at VM replication from a different perspective: the choice of a hyper visor. Namely, the differences between hyper...
Server consolidation through virtualization is becoming an effective way to save power and space in enterprise data centers. However, it also brings additional operational risks for the consolidated system because the impacts of hardware failures, human errors, and security breaches can be vastly magnified in that densely packed environment. In order to mitigate the above issues, this paper proposes...
This paper presents a novel stateless, virtualized communication engine for sub-microsecond latency. Using a field-programmable-gate-array (FPGA) based prototype we show a latency of 970 ns between two machines with our virtualized engine for low overhead (VELO). The FPGA device is directly connected to the CPUs by a hypertransport link. The described hardware architecture is optimized for small messages...
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