Pub Date : 2022-07-01DOI: 10.1109/NAS.2015.7255188
Resit Sendag
The purpose of this paper is to present the important aspects of the WCCSETE2016 – II World Congress on Computer Science, Engineering and Technology Education, a congress that is a high standard forum for the discussions and solutions for the betterment of professional practice as well as for research. It is a congress that counts with participation of organizations and authors in a top scientific and research environment. WCCSETE2016 is another successful edition organized by COPEC – Science and Education Research Council in partnership with Education Society of IEEE and this edition happens in Castelo Branco, Portugal at the Polytechnic Institute of Castelo Branco (IPCB). These organizations have been working together along a year putting up a top scientific congress with quality and impact in academic and professional communities. WCCSETE2016 has the honor to have many scientists in their fields of expertize, who are sharing their achievements and researches with peers. the sub-arrays of convolutional codes. This to to the the code correction power, thus obtaining a high degree of privacy in the information being transmitted. The transformation are applied to great convolutional codes unit memory with the rates r = 2/3, r = 2/4 and r = 3/4, analysis of the results obtained in each the Analyzing the failure rates of the discipline of Environmental Engineering courses and Electrical Engineering from the Federal Institute of Education, Science and Vitória da Conquista Technology, noted that most of the students of the first half of these disapprove courses in Curriculum Component Algebra Vector and Geometry analytical. Based on these data and aiming to reduce this index, this study aimed to identify students' difficulties in representing Analytic geometry graphics as well as suggest how proposed the use of Winplot software as a learning tool for building charts from of elementary functions. During the research, it was shown that most of the students interviewed had difficulties in solving Vector Algebra and Analytic Geometry issues and work with Winplot was important to relate the algebraic and geometric representation. The survey found that the Winplot contributed to students could solve Vector Algebra and Analytic Geometry issues. ecological dimension, social and political philosophy, focused on citizenship and community, new knowledge in environmental protection laws in to prevent further devastation of the natural environment and contribute to the environmental to the collective quality of life. This article aims to present a case study of the application of the teaching methodology for project into two classes in technical courses in Business Administration and Computer Science, presenting the results achieved by students who used real companies for the development of the course. In 2012 we created a PEDS Information polo Group to apply the methodology for project using real companies into two groups of different areas and compare the final
本文的目的是介绍WCCSETE2016 -第二届世界计算机科学、工程和技术教育大会的重要方面，该大会是一个高标准的论坛，为改善专业实践和研究提供讨论和解决方案。这是一个在顶级科研环境中组织和作者参与的大会。WCCSETE2016是COPEC科学与教育研究委员会与IEEE教育学会合作组织的又一成功版本，该版本在葡萄牙卡斯特布兰科理工学院(IPCB)举行。这些组织已经合作了一年，在学术和专业社区举办了一次高质量和有影响力的顶级科学大会。WCCSETE2016有幸邀请到众多专业领域的科学家，与同行分享他们的成果和研究成果。卷积码的子数组。这就提高了码的纠错能力，从而在传输的信息中获得了高度的私密性。将该变换应用于大卷积码单元存储器，其速率为r = 2/3, r = 2/4和r = 3/4，分析了联邦教育科学研究所和Vitória da Conquista Technology的环境工程课程和电气工程学科的不合格率，注意到这些课程的前半部分的大多数学生不满意课程组成代数向量和几何分析课程。基于这些数据，旨在降低这一指标，本研究旨在确定学生在表示解析几何图形方面的困难，并建议如何使用Winplot软件作为从初等函数构建图表的学习工具。在研究过程中，大多数受访学生在解决向量代数和解析几何问题方面存在困难，使用Winplot将代数和几何表示联系起来很重要。调查发现，Winplot有助于学生解决向量代数和解析几何问题。生态方面，侧重于公民和社区的社会和政治哲学，环境保护法律方面的新知识，以防止对自然环境的进一步破坏，并为环境对集体生活质量作出贡献。本文以项目教学法应用于工商管理与计算机科学两门技术课的案例研究为例，展示学生利用真实公司进行课程开发所取得的成果。2012年，我们创建了一个PEDS信息马球小组，将项目方法应用于两组不同地区的真实公司，并根据Charles Maguerez, jos Pacheco, Rubens Alves等人的地区参考资料，比较最终结果，逃避，参考资料，学生的社会和个人发展。教育是动态的，需要一些差异来吸引和鼓励学生学习，国家商业培训服务中心(SENAC) s o jossyedo里约热内卢Preto - SP，在2012年开始两个小组正在管理和技术领域设计不同的工作。本文介绍了电子工程与通信专业在电子工程与通信专业的应用教学。原型机由一个RGB LED照明系统组成，可以通过无线命令控制“灯”LED，设置亮度，创建自定义颜色，最后设置闹钟。描述了实现原型的步骤，展示了学生如何将各种获得的工程知识整合起来。样机由两部分组成:遥控器由微控制器、红外LED和矩阵键盘组成，用户输入命令发送由微控制器、红外接收器、“一盏灯”RGB LED、LCD和时钟/闹钟组成的照明系统，获得功能样机/工程
{"title":"Message from the general chair","authors":"Resit Sendag","doi":"10.1109/NAS.2015.7255188","DOIUrl":"https://doi.org/10.1109/NAS.2015.7255188","url":null,"abstract":"The purpose of this paper is to present the important aspects of the WCCSETE2016 – II World Congress on Computer Science, Engineering and Technology Education, a congress that is a high standard forum for the discussions and solutions for the betterment of professional practice as well as for research. It is a congress that counts with participation of organizations and authors in a top scientific and research environment. WCCSETE2016 is another successful edition organized by COPEC – Science and Education Research Council in partnership with Education Society of IEEE and this edition happens in Castelo Branco, Portugal at the Polytechnic Institute of Castelo Branco (IPCB). These organizations have been working together along a year putting up a top scientific congress with quality and impact in academic and professional communities. WCCSETE2016 has the honor to have many scientists in their fields of expertize, who are sharing their achievements and researches with peers. the sub-arrays of convolutional codes. This to to the the code correction power, thus obtaining a high degree of privacy in the information being transmitted. The transformation are applied to great convolutional codes unit memory with the rates r = 2/3, r = 2/4 and r = 3/4, analysis of the results obtained in each the Analyzing the failure rates of the discipline of Environmental Engineering courses and Electrical Engineering from the Federal Institute of Education, Science and Vitória da Conquista Technology, noted that most of the students of the first half of these disapprove courses in Curriculum Component Algebra Vector and Geometry analytical. Based on these data and aiming to reduce this index, this study aimed to identify students' difficulties in representing Analytic geometry graphics as well as suggest how proposed the use of Winplot software as a learning tool for building charts from of elementary functions. During the research, it was shown that most of the students interviewed had difficulties in solving Vector Algebra and Analytic Geometry issues and work with Winplot was important to relate the algebraic and geometric representation. The survey found that the Winplot contributed to students could solve Vector Algebra and Analytic Geometry issues. ecological dimension, social and political philosophy, focused on citizenship and community, new knowledge in environmental protection laws in to prevent further devastation of the natural environment and contribute to the environmental to the collective quality of life. This article aims to present a case study of the application of the teaching methodology for project into two classes in technical courses in Business Administration and Computer Science, presenting the results achieved by students who used real companies for the development of the course. In 2012 we created a PEDS Information polo Group to apply the methodology for project using real companies into two groups of different areas and compare the final ","PeriodicalId":298759,"journal":{"name":"IEEE International Conference on Networking, Architecture and Storages","volume":"18 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127914875","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 : 2017-08-01DOI: 10.1109/NAS.2017.8026631
M. Gerla
Summary form only give, as follows. Provides an abstract of the keynote presentation and a brief professional biography of the presenter. The complete presentation was not made available for publication as part of the conference proceedings. Traditionally, the vehicle has been the extension of the man's ambulatory system, docile to the driver's commands. Recent advances in communications, controls and embedded systems have changed this model, paving the way to the Intelligent Vehicle Grid. The car is now a formidable sensor platform, absorbing information from the environment, from other cars (and from the driver) and feeding it to other cars and infrastructure to assist in safe navigation, pollution control and traffic management. The next step in this evolution is just around the corner: the Internet of Autonomous Vehicles. Pioneered by the Google car, the Internet of Vehicles will be a distributed transport fabric capable to make its own decisions about driving customers to their destinations. Like other important instantiations of the Internet of Things (e.g., the smart building), the Internet of Vehicles will not merely upload data to the Internet. It will have its own communications, storage, intelligence, and learning capabilities to anticipate the customers' intentions. The concept that will help transition to the Internet of Vehicles is the Vehicular Cloud, the equivalent of Internet cloud for vehicles, providing the basic services required by the autonomous vehicles. This talk will trace the evolution from Intelligent Vehicle Grid to Autonomous, Internet-connected Vehicles, and Vehicular Cloud.
{"title":"[Keynote 1] Internet of vehicles: From intelligent grid to autonomous cars","authors":"M. Gerla","doi":"10.1109/NAS.2017.8026631","DOIUrl":"https://doi.org/10.1109/NAS.2017.8026631","url":null,"abstract":"Summary form only give, as follows. Provides an abstract of the keynote presentation and a brief professional biography of the presenter. The complete presentation was not made available for publication as part of the conference proceedings. Traditionally, the vehicle has been the extension of the man's ambulatory system, docile to the driver's commands. Recent advances in communications, controls and embedded systems have changed this model, paving the way to the Intelligent Vehicle Grid. The car is now a formidable sensor platform, absorbing information from the environment, from other cars (and from the driver) and feeding it to other cars and infrastructure to assist in safe navigation, pollution control and traffic management. The next step in this evolution is just around the corner: the Internet of Autonomous Vehicles. Pioneered by the Google car, the Internet of Vehicles will be a distributed transport fabric capable to make its own decisions about driving customers to their destinations. Like other important instantiations of the Internet of Things (e.g., the smart building), the Internet of Vehicles will not merely upload data to the Internet. It will have its own communications, storage, intelligence, and learning capabilities to anticipate the customers' intentions. The concept that will help transition to the Internet of Vehicles is the Vehicular Cloud, the equivalent of Internet cloud for vehicles, providing the basic services required by the autonomous vehicles. This talk will trace the evolution from Intelligent Vehicle Grid to Autonomous, Internet-connected Vehicles, and Vehicular Cloud.","PeriodicalId":298759,"journal":{"name":"IEEE International Conference on Networking, Architecture and Storages","volume":"37 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130618540","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 : 2017-08-01DOI: 10.1109/NAS.2017.8026632
Tao Li
Summary form only give, as follows. Provides an abstract of the keynote presentation and a brief professional biography of the presenter. The complete presentation was not made available for publication as part of the conference proceedings. Network Function Virtualization (NFV) is an initiative driven by the largest service providers (SP) to increase the use of virtualization and integrate intelligence into their network infrastructures. NFV leverages virtualization technology and operates network functions on standard servers to fundamentally decouple the customized and inflexible network hardware. Today, NFV provides a plethora of virtual network functions (VNFs), including gateways, mobile core, deep packet inspection (DPI), security, routing, and traffic management that can be combined to deliver the dynamic customized network service chains. Our exploration on both VM-based and container-based VNFs indicates that the service chaining can pose various challenges to NFV implementation on current commercial off-the-shelf (COTS) server. First, we observe that the NFV packet processing on COTS server exhibits a unique processing pattern - heterogeneous software pipeline, where the NFV traffic flows are processed by a variety of software components sequentially. On modern NUMA-based architecture, the end-to-end performance of NFV traffic flows can be severely affected by placing these heterogeneous software components inappropriately. We develop a thread scheduling mechanism that collaboratively places threads of heterogeneous software pipeline to minimize the end-to-end performance slowdown for NFV traffic flows. In the second part, we characterize the light-weight container-based VNF, which is expected to achieve shorter VNF provisioning time and lower resource overheads. However, we observe that the traffic flow processing in the shared host OS network stack involves a large amount of intermediate memory buffers and results in significant last level cache pollution. We propose NetContainer, a framework that achieves a fine-grained hardware resource management for containerized NFV platform. NetContainer exploits a cache access overhead guided page coloring technique to coordinately manage the inter/intra-flow cache access overheads.
{"title":"[keynote 2] Paving the way towards nfv: An infrastructure based approach","authors":"Tao Li","doi":"10.1109/NAS.2017.8026632","DOIUrl":"https://doi.org/10.1109/NAS.2017.8026632","url":null,"abstract":"Summary form only give, as follows. Provides an abstract of the keynote presentation and a brief professional biography of the presenter. The complete presentation was not made available for publication as part of the conference proceedings. Network Function Virtualization (NFV) is an initiative driven by the largest service providers (SP) to increase the use of virtualization and integrate intelligence into their network infrastructures. NFV leverages virtualization technology and operates network functions on standard servers to fundamentally decouple the customized and inflexible network hardware. Today, NFV provides a plethora of virtual network functions (VNFs), including gateways, mobile core, deep packet inspection (DPI), security, routing, and traffic management that can be combined to deliver the dynamic customized network service chains. Our exploration on both VM-based and container-based VNFs indicates that the service chaining can pose various challenges to NFV implementation on current commercial off-the-shelf (COTS) server. First, we observe that the NFV packet processing on COTS server exhibits a unique processing pattern - heterogeneous software pipeline, where the NFV traffic flows are processed by a variety of software components sequentially. On modern NUMA-based architecture, the end-to-end performance of NFV traffic flows can be severely affected by placing these heterogeneous software components inappropriately. We develop a thread scheduling mechanism that collaboratively places threads of heterogeneous software pipeline to minimize the end-to-end performance slowdown for NFV traffic flows. In the second part, we characterize the light-weight container-based VNF, which is expected to achieve shorter VNF provisioning time and lower resource overheads. However, we observe that the traffic flow processing in the shared host OS network stack involves a large amount of intermediate memory buffers and results in significant last level cache pollution. We propose NetContainer, a framework that achieves a fine-grained hardware resource management for containerized NFV platform. NetContainer exploits a cache access overhead guided page coloring technique to coordinately manage the inter/intra-flow cache access overheads.","PeriodicalId":298759,"journal":{"name":"IEEE International Conference on Networking, Architecture and Storages","volume":"52 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126493695","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 : 2016-08-01DOI: 10.1109/NAS.2016.7549395
Michael J. Giardino, Bonnie H. Ferri
{"title":"Correlating Hardware Performance Events to CPU and DRAM Power Consumption","authors":"Michael J. Giardino, Bonnie H. Ferri","doi":"10.1109/NAS.2016.7549395","DOIUrl":"https://doi.org/10.1109/NAS.2016.7549395","url":null,"abstract":"","PeriodicalId":298759,"journal":{"name":"IEEE International Conference on Networking, Architecture and Storages","volume":"53 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133564648","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}
Wenwu Na, Xudong Zhu, Jian Ke, Jin-ping Xu, Junwei Zhang, Qingzhong Bu, Lu Xu
On demand of various applications for storage virtualization, this paper presents a stackable block-level virtual snapshot device (VSD) based on the virtual storage pool. With the strategy of stackable block device, VSD employs a read-only snapshot model with serial connection, and a tree model mixed with serial and parallel connection for writable snapshot. Moreover, two data updating schemes, Copy on Write and Realloc on Write, are integrated into VSD. Thus, VSD supports various applications such as data backup and recovery, data version management and volume clone and so on. Finally, the storage requirements and I/O performance of VSD are evaluated.
{"title":"VSD: A Framework of Stackable Virtual Snapshot Device","authors":"Wenwu Na, Xudong Zhu, Jian Ke, Jin-ping Xu, Junwei Zhang, Qingzhong Bu, Lu Xu","doi":"10.1109/NAS.2009.78","DOIUrl":"https://doi.org/10.1109/NAS.2009.78","url":null,"abstract":"On demand of various applications for storage virtualization, this paper presents a stackable block-level virtual snapshot device (VSD) based on the virtual storage pool. With the strategy of stackable block device, VSD employs a read-only snapshot model with serial connection, and a tree model mixed with serial and parallel connection for writable snapshot. Moreover, two data updating schemes, Copy on Write and Realloc on Write, are integrated into VSD. Thus, VSD supports various applications such as data backup and recovery, data version management and volume clone and so on. Finally, the storage requirements and I/O performance of VSD are evaluated.","PeriodicalId":298759,"journal":{"name":"IEEE International Conference on Networking, Architecture and Storages","volume":"292 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122813090","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}
As a free application programming interface (API) for hardware-accelerated two-dimensional vector and raster graphics, OpenVG is becoming the standard for hardware development. This paper firstly proposes several optimization methods for OpenVG implementation, such as loop unrolling, operation transformation, function in lining, vectorization and address assignment, based on the hardware architecture and programming model of the Synchronous Data Triggered Architecture (SDTA). We then optimally realize the OpenVG path and paint algorithms on the SDTA with the direction of these methods and consideration of the algorithms’ characteristics. The analysis results show that the optimized OpenVG algorithms achieved 3-9 times speedups compared with original ones.
{"title":"Implementation of OpenVG Path and Paint Algorithms on Synchronous Data Triggered Architecture with Optimization","authors":"Sheng Ma, Libo Huang, Zhiying Wang, Kui Dai","doi":"10.1109/NAS.2009.67","DOIUrl":"https://doi.org/10.1109/NAS.2009.67","url":null,"abstract":"As a free application programming interface (API) for hardware-accelerated two-dimensional vector and raster graphics, OpenVG is becoming the standard for hardware development. This paper firstly proposes several optimization methods for OpenVG implementation, such as loop unrolling, operation transformation, function in lining, vectorization and address assignment, based on the hardware architecture and programming model of the Synchronous Data Triggered Architecture (SDTA). We then optimally realize the OpenVG path and paint algorithms on the SDTA with the direction of these methods and consideration of the algorithms’ characteristics. The analysis results show that the optimized OpenVG algorithms achieved 3-9 times speedups compared with original ones.","PeriodicalId":298759,"journal":{"name":"IEEE International Conference on Networking, Architecture and Storages","volume":"18 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116416343","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}
Yuan Ruan, Weibing Yang, Mingyu Chen, Xiaofang Zhao, Jianping Fan
There is a growing interest in designing high-speed network devices to perform packet processing at stream layer. However, variety kinds of out-of- sequence packets in real traffic will make trouble for hardware-based TCP reassembly system which is less flexible for exceptional processing. In this paper, we present a detailed analysis of behavior characteristic of out-of-sequence packets in real backbone traffic and propose a hardware-based solution for TCP reassembly based on the results of analysis. This solution could reassemble a TCP stream with concurrent multi discontinuous out-of-order data segments and provide a robust buffer management strategy for out-of-order data. We have also assessed the memory size and bandwidth required for reassembling real 10G traffic. The simulation result shows that the system can process over 99% of the 10G backbone traffic using reasonable storage resources. A FPGA-based prototype is also implemented for evaluation.
{"title":"Robust TCP Reassembly with a Hardware-Based Solution for Backbone Traffic","authors":"Yuan Ruan, Weibing Yang, Mingyu Chen, Xiaofang Zhao, Jianping Fan","doi":"10.1109/NAS.2010.53","DOIUrl":"https://doi.org/10.1109/NAS.2010.53","url":null,"abstract":"There is a growing interest in designing high-speed network devices to perform packet processing at stream layer. However, variety kinds of out-of- sequence packets in real traffic will make trouble for hardware-based TCP reassembly system which is less flexible for exceptional processing. In this paper, we present a detailed analysis of behavior characteristic of out-of-sequence packets in real backbone traffic and propose a hardware-based solution for TCP reassembly based on the results of analysis. This solution could reassemble a TCP stream with concurrent multi discontinuous out-of-order data segments and provide a robust buffer management strategy for out-of-order data. We have also assessed the memory size and bandwidth required for reassembling real 10G traffic. The simulation result shows that the system can process over 99% of the 10G backbone traffic using reasonable storage resources. A FPGA-based prototype is also implemented for evaluation.","PeriodicalId":298759,"journal":{"name":"IEEE International Conference on Networking, Architecture and Storages","volume":"20 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115345047","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}
In the anti-spam area, distributed spam processing technology that based on reputation mechanism is a currently main focus in research. The raw reputation plays an important role in computing the finial reputation of the target node. In this paper, we analyze the ratio-based raw reputation generation approach in detail, point out its problems, and propose an aggregation-based raw reputation generation approach. Furthermore, we discuss how the number of evaluations and the method using to choose these evaluations impact on the result of raw reputation. Theoretical analysis and simulation results demonstrate that aggregation-based approach is much more effective and accurate than ratio-based approach. As long as we choose the proper number of evaluations, the results can accurately reflect behavior of the target node.
{"title":"An Aggregation-Based Raw Reputation Generation Approach","authors":"Jianzhong Zhang, Tianyan Zhang, Xiaofeng Lan, Jingdong Xu","doi":"10.1109/NAS.2009.22","DOIUrl":"https://doi.org/10.1109/NAS.2009.22","url":null,"abstract":"In the anti-spam area, distributed spam processing technology that based on reputation mechanism is a currently main focus in research. The raw reputation plays an important role in computing the finial reputation of the target node. In this paper, we analyze the ratio-based raw reputation generation approach in detail, point out its problems, and propose an aggregation-based raw reputation generation approach. Furthermore, we discuss how the number of evaluations and the method using to choose these evaluations impact on the result of raw reputation. Theoretical analysis and simulation results demonstrate that aggregation-based approach is much more effective and accurate than ratio-based approach. As long as we choose the proper number of evaluations, the results can accurately reflect behavior of the target node.","PeriodicalId":298759,"journal":{"name":"IEEE International Conference on Networking, Architecture and Storages","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122950393","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}
It is a challenging task that enables performance isolation while providing performance guarantees among applications that share storage infrastructure. This paper presents Admission-control-based Proportional Allocation (APA), a novel I/O request scheduler that combines the admission control of worst-case resources reserved with the proportional resources allocation to manage the bandwidth resources for performance isolation. APA has three characteristics: 1) admission control for I/O requests of applications; 2) fairness allocation for idle bandwidth resources; 3) performance monitoring and feedback-based weight adjustment. We implemented APA in a prototype Performance Virtual Storage System (PVSS). Through experiments on a real system, we show that APA has ability to provide the performance isolation and predictable performance guarantees, and to avoid the performance interference among virtual disks.
{"title":"A Performance Isolation Algorithm for Shared Virtualization Storage System","authors":"Jian Ke, Xudong Zhu, Wenwu Na, Junwei Zhang, Xiaoming Han, Jiangang Zhang, Lu Xu","doi":"10.1109/NAS.2009.13","DOIUrl":"https://doi.org/10.1109/NAS.2009.13","url":null,"abstract":"It is a challenging task that enables performance isolation while providing performance guarantees among applications that share storage infrastructure. This paper presents Admission-control-based Proportional Allocation (APA), a novel I/O request scheduler that combines the admission control of worst-case resources reserved with the proportional resources allocation to manage the bandwidth resources for performance isolation. APA has three characteristics: 1) admission control for I/O requests of applications; 2) fairness allocation for idle bandwidth resources; 3) performance monitoring and feedback-based weight adjustment. We implemented APA in a prototype Performance Virtual Storage System (PVSS). Through experiments on a real system, we show that APA has ability to provide the performance isolation and predictable performance guarantees, and to avoid the performance interference among virtual disks.","PeriodicalId":298759,"journal":{"name":"IEEE International Conference on Networking, Architecture and Storages","volume":"140 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116424185","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 : 1900-01-01DOI: 10.1109/NAS.2015.7255189
J. Wang, Iris Bahar
Cluster systems have become the most commonly deployed high performance computing systems throughout the world. We rely on commodity hardware components to deliver high performance that is cost-effective; but we depend upon the innovation and support of open science projects and the dedication and commitment of the cluster community to deliver reliable, optimal and scalable software stacks for cluster computing. Clusters have become the workhorse within science, engineering and cloud computing. They solve our challenging and complex problems, analyze and visualize massive amount of data, and manage tremendous amounts of storage—empowering discovery and innovation in science, engineering, society and personal development.
{"title":"Message from the program co-chairs","authors":"J. Wang, Iris Bahar","doi":"10.1109/NAS.2015.7255189","DOIUrl":"https://doi.org/10.1109/NAS.2015.7255189","url":null,"abstract":"Cluster systems have become the most commonly deployed high performance computing systems throughout the world. We rely on commodity hardware components to deliver high performance that is cost-effective; but we depend upon the innovation and support of open science projects and the dedication and commitment of the cluster community to deliver reliable, optimal and scalable software stacks for cluster computing. Clusters have become the workhorse within science, engineering and cloud computing. They solve our challenging and complex problems, analyze and visualize massive amount of data, and manage tremendous amounts of storage—empowering discovery and innovation in science, engineering, society and personal development.","PeriodicalId":298759,"journal":{"name":"IEEE International Conference on Networking, Architecture and Storages","volume":"5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125503796","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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