Pub Date : 2014-12-01DOI: 10.1109/CCIOT.2014.7062504
Haoxiang Mao, B. Huang
Virtualization is becoming an important part of cloud computing and high performance calculation. In the virtualized system, the scheduler plays an important role in effecting the performance of whole system. Traditional scheduler that focus on the fairness of VMs would cause problems in I/O performance and latency. In order to eliminate the I/O latency issue, we propose a virtual machine scheduling model based on multiprocessor system. We also implement a prototype in Xen 4.3.0 and evaluate it with several benchmarks. Experiment results demonstrate that our scheduling model can improve the I/O performance effectively. The bandwidth of disk increase by 53.6% and that of network increase by 39.4%. Meanwhile, our method does not change the scheduling algorithm of CPU-intensive VM so that the scheduling fairness is ensured.
{"title":"I/O-intensive scheduling in multiprocessor virtualized system","authors":"Haoxiang Mao, B. Huang","doi":"10.1109/CCIOT.2014.7062504","DOIUrl":"https://doi.org/10.1109/CCIOT.2014.7062504","url":null,"abstract":"Virtualization is becoming an important part of cloud computing and high performance calculation. In the virtualized system, the scheduler plays an important role in effecting the performance of whole system. Traditional scheduler that focus on the fairness of VMs would cause problems in I/O performance and latency. In order to eliminate the I/O latency issue, we propose a virtual machine scheduling model based on multiprocessor system. We also implement a prototype in Xen 4.3.0 and evaluate it with several benchmarks. Experiment results demonstrate that our scheduling model can improve the I/O performance effectively. The bandwidth of disk increase by 53.6% and that of network increase by 39.4%. Meanwhile, our method does not change the scheduling algorithm of CPU-intensive VM so that the scheduling fairness is ensured.","PeriodicalId":255477,"journal":{"name":"Proceedings of 2014 International Conference on Cloud Computing and Internet of Things","volume":"143 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123772681","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}
Pub Date : 2014-12-01DOI: 10.1109/CCIOT.2014.7062505
M. Zhu, B. Huang, Xiaolong Jia
Virtualization is a key technology in the modern data centers as well as in the cloud computing industry. Modern virtual machine monitors (VMM) like KVM and Xen play a key role in the management and maintenance of virtual machines (VM). However, as a software middle layer, VMM brings in a negative impact in terms of VM's performance, among which the I/O events latency problem is one of the biggest issue.
{"title":"Elastic time slice scheduler in virtualized system","authors":"M. Zhu, B. Huang, Xiaolong Jia","doi":"10.1109/CCIOT.2014.7062505","DOIUrl":"https://doi.org/10.1109/CCIOT.2014.7062505","url":null,"abstract":"Virtualization is a key technology in the modern data centers as well as in the cloud computing industry. Modern virtual machine monitors (VMM) like KVM and Xen play a key role in the management and maintenance of virtual machines (VM). However, as a software middle layer, VMM brings in a negative impact in terms of VM's performance, among which the I/O events latency problem is one of the biggest issue.","PeriodicalId":255477,"journal":{"name":"Proceedings of 2014 International Conference on Cloud Computing and Internet of Things","volume":"29 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127722786","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}
Pub Date : 2014-12-01DOI: 10.1109/CCIOT.2014.7062511
Cheng Wenbo, Yucheng Yao, Yang Zhang
This paper presents a parallel SPH implementation on multi-core CPUs. The implementation uses a hash table to store particles data and divides the program code into 2 parts for parallelization. The first part has no data race, but the second part has data race. Then, the paper compares the running time and parallel speedup of each part to find the bottleneck of the parallel SPH program. The results show that the program can achieve linear speedup just with the first part to be parallelized when the search radius is large. And the second part has become a performance bottleneck only when the search radius is small enough (for each cell only contains one or two particles on average). We present a method to parallelize the second part without affecting the performance of the first part. The results show that our method can ease the performance bottleneck when the search radius is small.
{"title":"Performance analysis of parallel smoothed particle hydrodynamics on multi-core CPUs","authors":"Cheng Wenbo, Yucheng Yao, Yang Zhang","doi":"10.1109/CCIOT.2014.7062511","DOIUrl":"https://doi.org/10.1109/CCIOT.2014.7062511","url":null,"abstract":"This paper presents a parallel SPH implementation on multi-core CPUs. The implementation uses a hash table to store particles data and divides the program code into 2 parts for parallelization. The first part has no data race, but the second part has data race. Then, the paper compares the running time and parallel speedup of each part to find the bottleneck of the parallel SPH program. The results show that the program can achieve linear speedup just with the first part to be parallelized when the search radius is large. And the second part has become a performance bottleneck only when the search radius is small enough (for each cell only contains one or two particles on average). We present a method to parallelize the second part without affecting the performance of the first part. The results show that our method can ease the performance bottleneck when the search radius is small.","PeriodicalId":255477,"journal":{"name":"Proceedings of 2014 International Conference on Cloud Computing and Internet of Things","volume":"43 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126799766","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}
Pub Date : 2014-12-01DOI: 10.1109/CCIOT.2014.7062503
B. Huang, M. Zhu
Virtualization is important in server consolidation and essential for cloud computing. Using virtualization technology, a single physical machine can provide multiple isolated virtual machine to users, which will improve the overall system resources usage. However, virtualization will also introduce new challenges and mechanisms that work functionally in traditional operating system may lead to the performance degradation of virtual machines. LHP problem arises because spin lock mechanism could not work effectively in virtualization environment. To solve LHP problem, many solutions have been proposed to reduce its performance impact on virtual machines and improve the overall system performance. A hardware assisted technology called Pause Loop Exit(PLE) has been proposed to help detecting spin lock waiter in virtual machines and then reduce the cpu time used in spinning. In this paper, we verify the necessity of adjusting PLE configuration in different scenarios. Our experiment results show that it is necessary to adjust PLE configuration when the virtual machine is running different applications and the number of virtual machines varies.
{"title":"Research on necessity of adjusting PLE configuration","authors":"B. Huang, M. Zhu","doi":"10.1109/CCIOT.2014.7062503","DOIUrl":"https://doi.org/10.1109/CCIOT.2014.7062503","url":null,"abstract":"Virtualization is important in server consolidation and essential for cloud computing. Using virtualization technology, a single physical machine can provide multiple isolated virtual machine to users, which will improve the overall system resources usage. However, virtualization will also introduce new challenges and mechanisms that work functionally in traditional operating system may lead to the performance degradation of virtual machines. LHP problem arises because spin lock mechanism could not work effectively in virtualization environment. To solve LHP problem, many solutions have been proposed to reduce its performance impact on virtual machines and improve the overall system performance. A hardware assisted technology called Pause Loop Exit(PLE) has been proposed to help detecting spin lock waiter in virtual machines and then reduce the cpu time used in spinning. In this paper, we verify the necessity of adjusting PLE configuration in different scenarios. Our experiment results show that it is necessary to adjust PLE configuration when the virtual machine is running different applications and the number of virtual machines varies.","PeriodicalId":255477,"journal":{"name":"Proceedings of 2014 International Conference on Cloud Computing and Internet of Things","volume":"116 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121949810","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}
Pub Date : 2014-12-01DOI: 10.1109/CCIOT.2014.7062526
Liu Feng, Yang Xiu-ping, Wang Jie
The security routing protocol for Multi-Input-Multi-Output Vehicular Ad-hoc Network (MIMO-VANET) which is used to prevent the eavesdropping in VANET was presented in this paper. When building the routing table, this protocol stores the current channel states and restricts the VANET nodes, excepted source/ destination nodes, from obtaining the unrelated routing information. During the information transmission process, the presorted channel states in network layer are transparently transmitted to the physical layer, and decomposed as total channel state. The decomposed results, which are only known by the source/destination nodes from routing information, can be utilized to equalize the channel and to demodulate the information. As a result, the other nodes cannot effectively equalize the channel, which causes little information can be eavesdropped. The theory analysis and simulation illustrate that, when the destination nodes obtain the good signal quality, the eavesdropper suffers poor bit error rate.
{"title":"Security transmission routing protocol for MIMO-VANET","authors":"Liu Feng, Yang Xiu-ping, Wang Jie","doi":"10.1109/CCIOT.2014.7062526","DOIUrl":"https://doi.org/10.1109/CCIOT.2014.7062526","url":null,"abstract":"The security routing protocol for Multi-Input-Multi-Output Vehicular Ad-hoc Network (MIMO-VANET) which is used to prevent the eavesdropping in VANET was presented in this paper. When building the routing table, this protocol stores the current channel states and restricts the VANET nodes, excepted source/ destination nodes, from obtaining the unrelated routing information. During the information transmission process, the presorted channel states in network layer are transparently transmitted to the physical layer, and decomposed as total channel state. The decomposed results, which are only known by the source/destination nodes from routing information, can be utilized to equalize the channel and to demodulate the information. As a result, the other nodes cannot effectively equalize the channel, which causes little information can be eavesdropped. The theory analysis and simulation illustrate that, when the destination nodes obtain the good signal quality, the eavesdropper suffers poor bit error rate.","PeriodicalId":255477,"journal":{"name":"Proceedings of 2014 International Conference on Cloud Computing and Internet of Things","volume":"52 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122281724","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}
Pub Date : 2014-12-01DOI: 10.1109/CCIOT.2014.7062535
Weihong Wang, Wentao Xu
Based on the management system of university laboratory project application in ZJUT, this article studies the technical principle and core things deeply so as to know the actual effect of web application developed by WebWork framework and extended functions by jFinal framework. At the same time, a MVFO model which is suitable for this project is provided according to the insight of MVC and specifically analyzed by the function of exporting form view in Excel spreadsheet, which strengthen the comprehension and study of software architecture theory.
{"title":"Study and implementation of MVC pattern upon extended function in the management system of university laboratory project declaration","authors":"Weihong Wang, Wentao Xu","doi":"10.1109/CCIOT.2014.7062535","DOIUrl":"https://doi.org/10.1109/CCIOT.2014.7062535","url":null,"abstract":"Based on the management system of university laboratory project application in ZJUT, this article studies the technical principle and core things deeply so as to know the actual effect of web application developed by WebWork framework and extended functions by jFinal framework. At the same time, a MVFO model which is suitable for this project is provided according to the insight of MVC and specifically analyzed by the function of exporting form view in Excel spreadsheet, which strengthen the comprehension and study of software architecture theory.","PeriodicalId":255477,"journal":{"name":"Proceedings of 2014 International Conference on Cloud Computing and Internet of Things","volume":"36 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124944073","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}
Pub Date : 2014-12-01DOI: 10.1109/CCIOT.2014.7062532
Rupak Rathore, Carroll Gau
A rapidly ageing population, the prominence of obesity and associated medical conditions, widespread incidents of drunken driving, advent of telematics, advances in medical devices and emergence of 4G mobile networks necessitates and enables the convergence of biometrics into automobiles that can facilitate rapid and relevant responses to save precious lives. In this paper, the authors describe how such a convergence can be achieved by proposing an automotive healthcare and safety framework controlled by a dedicated healthcare systems control unit and its integration into an automotive Internet of Things containing telematics and other systems. The paper further explores the fulfillment of emergency response using cloud computing and vehicle to anything technologies as well as the potential impact such a framework can have on safety of our cities.
{"title":"Integrating biometric sensors into automotive Internet of Things","authors":"Rupak Rathore, Carroll Gau","doi":"10.1109/CCIOT.2014.7062532","DOIUrl":"https://doi.org/10.1109/CCIOT.2014.7062532","url":null,"abstract":"A rapidly ageing population, the prominence of obesity and associated medical conditions, widespread incidents of drunken driving, advent of telematics, advances in medical devices and emergence of 4G mobile networks necessitates and enables the convergence of biometrics into automobiles that can facilitate rapid and relevant responses to save precious lives. In this paper, the authors describe how such a convergence can be achieved by proposing an automotive healthcare and safety framework controlled by a dedicated healthcare systems control unit and its integration into an automotive Internet of Things containing telematics and other systems. The paper further explores the fulfillment of emergency response using cloud computing and vehicle to anything technologies as well as the potential impact such a framework can have on safety of our cities.","PeriodicalId":255477,"journal":{"name":"Proceedings of 2014 International Conference on Cloud Computing and Internet of Things","volume":"47 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125000314","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}
Pub Date : 2014-12-01DOI: 10.1109/CCIOT.2014.7062495
Guo-xing Lan
To make full use of the scattered resources in cloud network, this paper proposes an improved quad-tree based cloud computing task allocation strategy on the basis of traditional allocation strategy. The strategy makes effectively use of the temporary network nodes in cloud web by creating a parallel computing model based on improved quad-tree. In the model, a pointer to the next brother node is added to every intermediate node, effectively reducing the task allocations workload of the root node. The simulation results show that the proposed strategy presents good computing performance and high stability.
{"title":"Task allocation strategy based on improved quad-tree in the cloud","authors":"Guo-xing Lan","doi":"10.1109/CCIOT.2014.7062495","DOIUrl":"https://doi.org/10.1109/CCIOT.2014.7062495","url":null,"abstract":"To make full use of the scattered resources in cloud network, this paper proposes an improved quad-tree based cloud computing task allocation strategy on the basis of traditional allocation strategy. The strategy makes effectively use of the temporary network nodes in cloud web by creating a parallel computing model based on improved quad-tree. In the model, a pointer to the next brother node is added to every intermediate node, effectively reducing the task allocations workload of the root node. The simulation results show that the proposed strategy presents good computing performance and high stability.","PeriodicalId":255477,"journal":{"name":"Proceedings of 2014 International Conference on Cloud Computing and Internet of Things","volume":"45 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129077495","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}
Pub Date : 2014-12-01DOI: 10.1109/CCIOT.2014.7062523
Lan Kou, Jianxin Liu, Min Hu
Due to the connection with multipath transport control protocol (MPTCP) cannot utilize network resources sufficiently over the unshared bottleneck link, this paper proposes a congestion control algorithm based on the subflow correlation matrix (established by packet loss and RTT information) which is used to detect the status of bottleneck link among subflows by correlation coefficient. Then it performs different congestion control strategies over shared and unshared bottleneck links by adopting fairness definition based on bottleneck link. The results show that the proposed subflow correlation matrix can be used to detect shared bottleneck subflows more accurate and improve overall throughput of MPTCP connection.
{"title":"A multiple-path TCP congestion control algorithm based on subflow correlation matrix","authors":"Lan Kou, Jianxin Liu, Min Hu","doi":"10.1109/CCIOT.2014.7062523","DOIUrl":"https://doi.org/10.1109/CCIOT.2014.7062523","url":null,"abstract":"Due to the connection with multipath transport control protocol (MPTCP) cannot utilize network resources sufficiently over the unshared bottleneck link, this paper proposes a congestion control algorithm based on the subflow correlation matrix (established by packet loss and RTT information) which is used to detect the status of bottleneck link among subflows by correlation coefficient. Then it performs different congestion control strategies over shared and unshared bottleneck links by adopting fairness definition based on bottleneck link. The results show that the proposed subflow correlation matrix can be used to detect shared bottleneck subflows more accurate and improve overall throughput of MPTCP connection.","PeriodicalId":255477,"journal":{"name":"Proceedings of 2014 International Conference on Cloud Computing and Internet of Things","volume":"57 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122528719","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}
Pub Date : 2014-12-01DOI: 10.1109/CCIOT.2014.7062494
Chenlong Man, Zaifeng Shi, Zehao Xu, Yang Zong, Ke Pang, Yuzhao Li
IC industry has made great progress in the recent years. However, restricted by the funds and budget, resources of IC design and test are imbalanced. This paper describes an architecture of Cloud-EDA Platform based on Cloud Computing, which is the most popular topic of the internet and IT industry for its high flexibility and low cost. According to the proposed architecture, we design the prototype of Cloud-EDA Platform and develop an application of test-pattern-conversion, which demonstrate that cloud computing can be combined with IC industry to enable ordinary users, app developers and EDA vendors to achieve a win-win-win result.
{"title":"Cloud-EDA:a PaaS platform architecture and application development for IC design & test","authors":"Chenlong Man, Zaifeng Shi, Zehao Xu, Yang Zong, Ke Pang, Yuzhao Li","doi":"10.1109/CCIOT.2014.7062494","DOIUrl":"https://doi.org/10.1109/CCIOT.2014.7062494","url":null,"abstract":"IC industry has made great progress in the recent years. However, restricted by the funds and budget, resources of IC design and test are imbalanced. This paper describes an architecture of Cloud-EDA Platform based on Cloud Computing, which is the most popular topic of the internet and IT industry for its high flexibility and low cost. According to the proposed architecture, we design the prototype of Cloud-EDA Platform and develop an application of test-pattern-conversion, which demonstrate that cloud computing can be combined with IC industry to enable ordinary users, app developers and EDA vendors to achieve a win-win-win result.","PeriodicalId":255477,"journal":{"name":"Proceedings of 2014 International Conference on Cloud Computing and Internet of Things","volume":"34 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128150558","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}
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