2014 IEEE 22nd International Symposium on Modelling, Analysis & Simulation of Computer and Telecommunication Systems最新文献

Understanding the Impact of vCPU Scheduling on DVFS-Based Power Management in Virtualized Cloud Environment 了解vCPU调度对虚拟化云环境下基于dvfs的电源管理的影响

2014 IEEE 22nd International Symposium on Modelling, Analysis & Simulation of Computer and Telecommunication Systems Pub Date : 2014-09-09 DOI: 10.1109/MASCOTS.2014.44

Ming Liu, Chao Li, Tao Li

{"title":"Understanding the Impact of vCPU Scheduling on DVFS-Based Power Management in Virtualized Cloud Environment","authors":"Ming Liu, Chao Li, Tao Li","doi":"10.1109/MASCOTS.2014.44","DOIUrl":"https://doi.org/10.1109/MASCOTS.2014.44","url":null,"abstract":"Virtualized platform has emerged as a prominent environment for cloud computing, especially in today's power-constrained data centers. However, due to a lack of coordination between runtime power management and a virtual CPU (vCPU) scheduler, existing virtualized cloud platform is far from efficient. First, current frequency control mechanism is unable to satisfy the fast-changing vCPU frequency requirement imposed by vCPU scheduler, which we refer to as demand imbalance problem. In addition, newly created vCPUs, if scheduled solely based on fairness, can cause inefficient frequency rise and drop on an unmatched physical core, which we refer to as utilization mismatch problem. In both cases, the system incurs degraded power efficiency and sub-optimal workload performance. In this study we perform a comprehensive analysis on the interplay between vCPU scheduling and processor-centric power control in virtualized cloud environment. Using representative workloads from Cloud Suite and real server deployment, we examine the energy/performance implications of frequency scaling and vCPU scheduling on both single-VM and multi-VM cloud host. We show that existing virtualized platform has the potential to improve energy efficiency and workload performance by 32% and 25%, respectively, if vCPUs are balanced and appropriately scheduled. We also show that dirty page rate, virtual block device processing rate, virtual network packets arrival rate, and network I/O buffer availability are important efficiency indicators for energy-efficient virtualized cloud system design.","PeriodicalId":345311,"journal":{"name":"2014 IEEE 22nd International Symposium on Modelling, Analysis & Simulation of Computer and Telecommunication Systems","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-09-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114970330","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 8

COLD: Cloud Optimized Workload Deployer COLD:云优化的工作负载部署器

2014 IEEE 22nd International Symposium on Modelling, Analysis & Simulation of Computer and Telecommunication Systems Pub Date : 2014-09-09 DOI: 10.1109/MASCOTS.2014.76

Diana Arroyo, Iqbal Mohomed

{"title":"COLD: Cloud Optimized Workload Deployer","authors":"Diana Arroyo, Iqbal Mohomed","doi":"10.1109/MASCOTS.2014.76","DOIUrl":"https://doi.org/10.1109/MASCOTS.2014.76","url":null,"abstract":"We demonstrate a prototype system called COLD that we are developing at IBM Research which provides optimized deployment of workload in the cloud. A workload refers to an application, consisting of virtual entities (e.g. VM, volume), to be deployed in a cloud infrastructure, consisting of physical entities (e.g. PM, storage). The resource requirements of the virtual entities, as well as metadata describing relations among virtual entities (e.g. location proximity requirement), are described using a declarative workload definition language, namely using a HOT template. COLD provides a clean separation between the underlying mechanisms offered by a given cloud environment for lifecycle management of virtual resources and policies that influence optimal placement. The current implementation of COLD is tied to Open Stack, though we have plans in the future to make it cloud agnostic. It is designed to be fault-tolerant. In a software defined environment of an Open Stack cloud with various hyper visors, we show the operation of COLD to place various Heat stacks that contain specific policies such as rack-level antic location.","PeriodicalId":345311,"journal":{"name":"2014 IEEE 22nd International Symposium on Modelling, Analysis & Simulation of Computer and Telecommunication Systems","volume":"115 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-09-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117129080","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Showstopper: The Partial CPU Load Tool showstoper:部分CPU负载工具

2014 IEEE 22nd International Symposium on Modelling, Analysis & Simulation of Computer and Telecommunication Systems Pub Date : 2014-09-09 DOI: 10.1109/MASCOTS.2014.75

Andrej Podzimek, L. Chen, L. Bulej, Walter Binder, P. Tůma

引用次数: 4

A Strategy for Data Replication in Mobile Ad Hoc Networks 移动自组织网络中的数据复制策略

2014 IEEE 22nd International Symposium on Modelling, Analysis & Simulation of Computer and Telecommunication Systems Pub Date : 2014-09-09 DOI: 10.1109/MASCOTS.2014.69

G. Michelon, L. Lima, J. D. Oliveira, A. Calsavara, G. Andrade

引用次数: 5

Concurrent and Distributed CloudSim Simulations 并发和分布式CloudSim模拟

2014 IEEE 22nd International Symposium on Modelling, Analysis & Simulation of Computer and Telecommunication Systems Pub Date : 2014-09-09 DOI: 10.1109/MASCOTS.2014.70

P. Kathiravelu, L. Veiga

引用次数: 22

A Versatile Traffic and Power Aware Performability Analysis of Server Virtualized Systems 服务器虚拟化系统的多用途流量和功率感知性能分析

2014 IEEE 22nd International Symposium on Modelling, Analysis & Simulation of Computer and Telecommunication Systems Pub Date : 2014-09-09 DOI: 10.1109/MASCOTS.2014.34

M. Escheikh, H. Jouini, Kamel Barkaoui

引用次数: 4

ZombieNAND: Resurrecting Dead NAND Flash for Improved SSD Longevity ZombieNAND:复活死去的NAND闪存提高SSD寿命

2014 IEEE 22nd International Symposium on Modelling, Analysis & Simulation of Computer and Telecommunication Systems Pub Date : 2014-09-09 DOI: 10.1109/MASCOTS.2014.37

E. Wilson, Myoungsoo Jung, M. Kandemir

{"title":"ZombieNAND: Resurrecting Dead NAND Flash for Improved SSD Longevity","authors":"E. Wilson, Myoungsoo Jung, M. Kandemir","doi":"10.1109/MASCOTS.2014.37","DOIUrl":"https://doi.org/10.1109/MASCOTS.2014.37","url":null,"abstract":"As consumer pressure for more bits per dollar and higher density-per-solid-state disk (SSD) forces manufacturers to squeeze more than one bit per flash cell and feature sizes downwards, wear-out is again becoming an increasing concern. Specifically, while single-level cell flash at larger feature sizes used to boast over 100,000 program/erase (P/E) cycles, modern triple-level cell flash can only sustain a measly 3,000 P/E cycles before it can no longer be reliably used. However, one lesser known facet of NAND flash design is that there is no material difference between cells that store one, two, or three bits per cell - it is merely a logical interpretation of the cells contents. Therefore, in this work we leverage this interesting property to explore how resurrecting dead flash cells to create \"Zombie-NAND\" flash can improve an SSD's lifetime, and what, if any, impact on latency results in doing such. Specifically, we analyze the impact of switching a TLC or MLC cell down one bit upon death, this allows the voltage thresholds to rise and life, though at a lower capacity, to continue for that cell. Finding that traditional wear-leveling techniques actually inhibit the benefits of this scheme, we propose and explore how controlled \"wear-unleveling\" can work in tandem with Zombie-NAND cells to provide vastly increased life and decreased latencies for the drive. In this exploration, we perform rigorous performance measurement over a number of parameters representative of a variety of commodity and commercial SSDs.","PeriodicalId":345311,"journal":{"name":"2014 IEEE 22nd International Symposium on Modelling, Analysis & Simulation of Computer and Telecommunication Systems","volume":"33 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-09-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124107094","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 15

Energy Aware Algorithmic Engineering 能源感知算法工程

2014 IEEE 22nd International Symposium on Modelling, Analysis & Simulation of Computer and Telecommunication Systems Pub Date : 2014-09-09 DOI: 10.1109/MASCOTS.2014.47

Swapnoneel Roy, A. Rudra, Akshat Verma

{"title":"Energy Aware Algorithmic Engineering","authors":"Swapnoneel Roy, A. Rudra, Akshat Verma","doi":"10.1109/MASCOTS.2014.47","DOIUrl":"https://doi.org/10.1109/MASCOTS.2014.47","url":null,"abstract":"In this work, we argue that energy management should be a guiding principle for design and implementation of algorithms. Traditional complexity models for algorithms are simple and do not aid in design of energy-efficient algorithms. In this work, we conducted a large number of experiments to understand energy consumption for algorithms. We study the energy consumption for popular vector operations, matrix operations, sorting, and graph algorithms. We observed that the energy consumption for any given algorithm depends on the memory parallelism the algorithm can exhibit for a given data layout in the RAM with variations up to 100% for many popular algorithms. Our experiments validate the asymptotic energy complexity model presented in a companion paper [1] and brings out many practical insights. We show that reads can be more expensive in terms of energy than writes, and different data types can lead to different energy consumption. Our most important result is a theoretical and experimental quantification of the impact of parallel data sequences on energy consumption. We also observe that high memory parallelism can also increase energy consumption with multiple concurrent access sequences. We use insights from our experiments to propose algorithmic engineering techniques for practical energy efficient software.","PeriodicalId":345311,"journal":{"name":"2014 IEEE 22nd International Symposium on Modelling, Analysis & Simulation of Computer and Telecommunication Systems","volume":"4 8","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-09-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"113932527","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 13

Cloud-Based Extension for Community-Lab 基于云的社区实验室扩展

2014 IEEE 22nd International Symposium on Modelling, Analysis & Simulation of Computer and Telecommunication Systems Pub Date : 2014-09-09 DOI: 10.1109/MASCOTS.2014.73

Mennan Selimi, J. L. Florit, Davide Vega, Roc Meseguer, E. López, Amin M. Khan, Axel Neumann, Felix Freitag, Leandro Navarro-Moldes, Roger Baig, P. Garcia, A. Moll, R. P. Centelles, Ivan Vilata i Balaguer, M. Aymerich, Santiago Lamora

{"title":"Cloud-Based Extension for Community-Lab","authors":"Mennan Selimi, J. L. Florit, Davide Vega, Roc Meseguer, E. López, Amin M. Khan, Axel Neumann, Felix Freitag, Leandro Navarro-Moldes, Roger Baig, P. Garcia, A. Moll, R. P. Centelles, Ivan Vilata i Balaguer, M. Aymerich, Santiago Lamora","doi":"10.1109/MASCOTS.2014.73","DOIUrl":"https://doi.org/10.1109/MASCOTS.2014.73","url":null,"abstract":"Community-Lab is an open, distributed infrastructure for researchers to carry out experiments within wireless community networks. Community networks are an emergent model of infrastructures built with off-the-shelf communication equipment that aims to satisfy a community's demand for Internet access and ICT services. Community-Lab consists of more than 100 nodes that are integrated in existing community networks, thus giving researchers access to community networks and allowing them to conduct experimental evaluation of routing protocols, services and applications deployed there. Community networks have now the opportunity to extend the collaborative network building to the next level, that is, building collaborative services implemented as community clouds, built, operated and maintained by the community, that run on community-owned heterogeneous resources, and offer cloud-based services that are of the community's interest. This demo paper focuses on demonstrating the cloud extension of Community-Lab, enabling now community cloud experiments. By means of selected applications, we show how Community-Lab has been extended with distributed clouds, where different devices such as server, desktop PCs, low-resource embedded PCs and IoT boards are brought together forming a heterogeneous distributed cloud environment for researchers to experiment in community networks.","PeriodicalId":345311,"journal":{"name":"2014 IEEE 22nd International Symposium on Modelling, Analysis & Simulation of Computer and Telecommunication Systems","volume":"21 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-09-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130164011","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 10

Multi-fusion Based Distributed Spectrum Sensing against Data Falsification Attacks and Byzantine Failures in CR-MANET CR-MANET中基于多融合的分布式频谱感知抗数据伪造攻击和拜占庭故障

2014 IEEE 22nd International Symposium on Modelling, Analysis & Simulation of Computer and Telecommunication Systems Pub Date : 2014-09-09 DOI: 10.1109/MASCOTS.2014.61

Kanthakumar Pongaliur, Li Xiao

{"title":"Multi-fusion Based Distributed Spectrum Sensing against Data Falsification Attacks and Byzantine Failures in CR-MANET","authors":"Kanthakumar Pongaliur, Li Xiao","doi":"10.1109/MASCOTS.2014.61","DOIUrl":"https://doi.org/10.1109/MASCOTS.2014.61","url":null,"abstract":"In mobile ad-hoc cognitive radio networks (CRMANET), accurately identifying primary user spectrum occupancy is an important requirement in successful utilization of the spectrum by the secondary user. This is made difficult by malicious mobile secondary users launching spectrum sensing data falsification (SSDF) attacks, byzantine failures of devices, primary user signal fading, and hidden terminal problems. Another ability of these malicious users is to use their mobility to hide under the changing neighborhood. Existing state of the art techniques either consider a centralized approach in decision making or when considering an ad-hoc network, do not take into account the mobility of the devices which adds unique limitations. We present a light weight multi-fusion based distributed spectrum sensing scheme (MFDSS) in a mobile ad-hoc secondary user network to overcome the aforementioned problems. MFDSS allows each secondary user to collect semi-global information to make decisions in a distributed manner. It uses outlier detection and data fusion to remove incorrect sensing data generated by byzantine failures. Reputation information of the devices is used to suppress a SSDF attack. MFDSS incorporates a reputation propagation and fusion scheme to prevent malicious devices from hiding behind changing topology and to maintain the freshness of the reputation information. Additionally, MFDSS includes an incubation period to discourage devices from changing identity to perform a Sybil attack or to mask a bad reputation. Detailed analysis is presented and the results show significant improvement in correct primary user spectrum occupancy identification. We also show that without the reputation propagation of MFDSS, a malicious device is able to move its position and hide its malicious intentions in the new neighborhood.","PeriodicalId":345311,"journal":{"name":"2014 IEEE 22nd International Symposium on Modelling, Analysis & Simulation of Computer and Telecommunication Systems","volume":"256 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-09-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128909677","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 6