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This paper shows the management method of network bandwidth for cloud service or server management. In the cloud service and server management, video transmission is the main problem. When multiple video are transmitted to a network port, if the amount of video data exceeds network bandwidth, user experience becomes worse. To prevent this, compression rates and generation of intra-frame from compression...
This paper shows a prototyping and operating effort for a federated multisite SDN-Cloud playground that leverages open-source software such as OpenStack cloud, ONOS SDN controller, and Quagga router. A SDN-based federation possibility for distributed multisite cloud is verified by providing an open playground over three international sites under separate administrative domains.
It has been widely accepted that software virtualization has a big negative impact on high-performance computing (HPC) application performance. This work explores the potential use of Infiniband hardware virtualization in an Open Nebula cloud towards the efficient support of MPI-based workloads. We have implemented, deployed, and tested an Infiniband network on the Fermi Cloud private Infrastructure-as-a-Service...
Cloud computing is great for scaling applications but the latency in a guest VM can be unpredictable due to resource contention between neighbors. For telephony applications, which are latency-sensitive, we propose a system to monitor telephony server latencies and adapt the server load based on the measured latencies. We implemented the system and evaluated it on an Amazon EC2 test bed. We show indirectly...
Cloud computing has become a mainstream in providing computing resources as services. Recent cloud computing systems are composed of homogeneous hardware resources. Heterogeneous cloud computing can provide better performance and energy efficiency than homogeneous cloud computing. Therefore, heterogeneous cloud computing is expected to be used widely. In general, memory management policy has huge...
MapReduce-Hadoop has emerged as an effectiveframework for large-scale data analytics, providing support forexecuting jobs and storing data in a parallel and distributedmanner. MapReduce has been shown to perform very well onlarge datacenters running applications where the data can beeffectively divided into homogeneous chunks running across homogeneoushardware. However, the performance of MapReduce-Hadoop...
The latest trend and technology buzzword in the IT industry is cloud computing. By leveraging on cloud computing's characteristics such as resilience, fault tolerance and high availability, a new generation of cloud based security solutions has emerged. This paper specifically looks at the notion of merging spam filtering with cloud computing and is one of the earliest studies done in this area. Following...
In this paper, we describe three major issues on supporting public cloud virtual machine such as the global scale. First is a heterogeneous provisioning issue. The kinds of operation systems that users require are various like as the required hardware performance diversity. Second, we propose a proper algorithm for guarantee about user's performance and efficiency of the cloud cluster resources together...
Clouds enable novel execution modes often supported by advanced capabilities such as autonomic schedulers. These capabilities are predicated upon an accurate estimation and calculation of runtimes on a given infrastructure. Using a well understood high-performance computing workload, we find strong fluctuations from the mean performance on EC2 and Eucalyptus-based cloud systems. Our analysis eliminates...
Efficient metadata management is critical for distributed file system in cloud computing. In this paper we propose a new metadata management scheme which employs master metadata server (MMDS) and metadata look-up table server between the metadata servers and clients. The MMDS checks the state of MDSs for load-balancing, and thereby avoids hot spot. The proposed scheme significantly reduces the network...
The virtualization technology has been developed rapidly with the growth of the hardware supported virtualization technologies and the appearance of the various services. Many researchers are concentrating on developing the virtualization technologies which are recognized as the most significant core technology of the IT applications such as green IT and cloud computing. The major processor companies...
The TPB (trusted platform board) is an expansion of the TPM (trust platform module) chip for the elevation of the efficiency and usability of the TPM chip that has been developed from the TCG (trusted computing group) for the trust computing. In addition to the TPB function supporting environments for the high-standard trust within the hardware standard of the system, the present paper develops the...
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