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H-RADIC: A Fault Tolerance Framework for Virtual Clusters on Multi-Cloud Environments h - radius:多云环境下虚拟集群的容错框架
J. Comput. Sci. Technol. Pub Date : 2018-12-12 DOI: 10.24215/16666038.18.E24
Ambrosio Royo, Jorge Villamayor, Marcela Castro-León, Dolores Rexachs, E. Luque
{"title":"H-RADIC: A Fault Tolerance Framework for Virtual Clusters on Multi-Cloud Environments","authors":"Ambrosio Royo, Jorge Villamayor, Marcela Castro-León, Dolores Rexachs, E. Luque","doi":"10.24215/16666038.18.E24","DOIUrl":"https://doi.org/10.24215/16666038.18.E24","url":null,"abstract":"Even though the cloud platform promises to be reliable, several availability incidents prove that it is not. How can we be sure that a parallel application finishes it´s execution even if a site is affected by a failure? This paper presents H-RADIC, an approach based on RADIC architecture, that executes parallel applications protected by RADIC in at least 3 different virtual clusters or sites. The execution state of each site is saved periodically in another site and it is recovered in case of failure. The paper details the configuration of the architecture and the experiment´s results using 3 clusters running NAS parallel applications protected with DMTCP, a very well-known distributed multi-threaded checkpoint tool. Our experiments show that by adding a cluster protector it will be possible to implement the next level in the hierarchy, where the first level in the RADIC hierarchy works as an observer at a site level. In adition, the experiments showed that the protection implementation is out of the critical path of the application and it depends on the utilized resources.","PeriodicalId":188846,"journal":{"name":"J. Comput. Sci. Technol.","volume":"12 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-12-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115158434","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: 0
Fire propagation visualization in real time 火灾传播实时可视化
J. Comput. Sci. Technol. Pub Date : 2018-12-12 DOI: 10.24215/16666038.18.E27
M. Denham, Sigfrido Waidelich, K. Laneri
{"title":"Fire propagation visualization in real time","authors":"M. Denham, Sigfrido Waidelich, K. Laneri","doi":"10.24215/16666038.18.E27","DOIUrl":"https://doi.org/10.24215/16666038.18.E27","url":null,"abstract":"Our motivation comes from the need of a tailored computational tool for simulation and prediction of forest fire propagation, to be used by firefighters in Patagonia, Argentina. Based on previous works on Graphic Processing Units (GPU) for fitting and simulating fires in our region, we developed a visualization interface for real time computing, simulation and prediction of fire propagation. We have the possibility of changing the ensemble of raster maps layers to change the region in which fire will propagate.The visualization platform runs on GPUs and the user can rotate and zoom the landscape to select the optimal view of fire propagation. Opacity of different layers can be regulated by the user, allowing to see fire propagation at the same time that underlying vegetation, wind direction and intensity. The ignition point can also be selected by the user, and firebreaks can be plotted while simulation is going on.After the performance of a high number of stochastic simulations in parallel in GPUs, the application shows a map of the final fire surface colored according to the probability that a given cell burns. In this way the user can visually identify the most critical direction for fire propagation, a useful information to stop fire optimizing resources, which is specially important when they are scarce like is the case of our Patagonia region.","PeriodicalId":188846,"journal":{"name":"J. Comput. Sci. Technol.","volume":"21 1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-12-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128569423","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: 4
Short term cloud nowcasting for a solar power plant based on irradiance historical data 基于辐照度历史数据的某太阳能发电厂短期临近云预报
J. Comput. Sci. Technol. Pub Date : 2018-12-12 DOI: 10.24215/16666038.18.E21
R. Caballero, L. Zarzalejo, Á. Otero, L. Piñuel, S. Wilbert
{"title":"Short term cloud nowcasting for a solar power plant based on irradiance historical data","authors":"R. Caballero, L. Zarzalejo, Á. Otero, L. Piñuel, S. Wilbert","doi":"10.24215/16666038.18.E21","DOIUrl":"https://doi.org/10.24215/16666038.18.E21","url":null,"abstract":"This work considers the problem of forecasting the normal solar irradiance with high spatial and temporal resolution (5 minutes). The forecasting is based on a dataset registered during one year from the high resolution radiometric network at a operational solar power plan at Almeria, Spain. In particular, we show a technique for forecasting the irradiance in the next few minutes from the irradiance values obtained on the previous hour.  Our proposal employs a type of recurrent neural network known as LSTM, which can learn complex patterns and that has proven its usability for forecasting temporal series. The results show a reasonable improvement with respect to other prediction methods typically employed in the studies of temporal series.","PeriodicalId":188846,"journal":{"name":"J. Comput. Sci. Technol.","volume":"4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-12-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129764166","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: 3
Processing Collections of Geo-Referenced Images for Natural Disasters 自然灾害中地理参考图像的处理
J. Comput. Sci. Technol. Pub Date : 2018-12-12 DOI: 10.24215/16666038.18.E22
Fernando Loor, V. Gil-Costa, Mauricio Marín
{"title":"Processing Collections of Geo-Referenced Images for Natural Disasters","authors":"Fernando Loor, V. Gil-Costa, Mauricio Marín","doi":"10.24215/16666038.18.E22","DOIUrl":"https://doi.org/10.24215/16666038.18.E22","url":null,"abstract":"After disaster strikes, emergency response teams need to work fast. In this context, crowdsourcing has emerged as a powerful mechanism where volunteers can help to process different tasks such as processing complex images using labeling and classification techniques. In this work we propose to address the  problem of how to efficiently process large volumes of georeferenced images using crowdsourcing in the context of high risk such as natural disasters. Research on citizen science and crowdsourcing indicates that volunteers should be able to contribute in a useful way with a limited time to a project, supported by the results of usability studies. We present the design of a platform for real-time processing of georeferenced images. In particular, we focus on the interaction between the crowdsourcing and the volunteers connected to a P2P network.","PeriodicalId":188846,"journal":{"name":"J. Comput. Sci. Technol.","volume":"98 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-12-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127345031","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: 0
Cloud Computing, Big Data and the Industry 4.0 Reference Architectures 云计算、大数据和工业4.0参考架构
J. Comput. Sci. Technol. Pub Date : 2018-12-12 DOI: 10.24215/16666038.18.E29
N. Velásquez, Elsa Estevez, Patricia Pesado
{"title":"Cloud Computing, Big Data and the Industry 4.0 Reference Architectures","authors":"N. Velásquez, Elsa Estevez, Patricia Pesado","doi":"10.24215/16666038.18.E29","DOIUrl":"https://doi.org/10.24215/16666038.18.E29","url":null,"abstract":"The Industry 4.0 promotes the use of Information and Communication Technologies (ICT) in manufacturing processes to obtain customized products satisfying demanding needs of new consumers. The Industry 4.0 approach transforms the traditional pyramid model of automation to a network model of interconnected services, combining operational technology (OT) with Information Technology (IT). This new model allows the creation of ecosystems enabling more flexible production processes through connecting systems and sharing data. In this context, cloud computing and big data are critical technologies for leveraging the approach. Thus, this paper analyzes cloud computing and big data under the lenses of two leading reference architectures for implementing Industry 4.0: 1) the Industrial Internet Reference Architecture (IIRA), and 2) the Reference Architecture Model Industrie 4.0 (RAMI 4.0). A main contribution of this paper is to present a comparative analysis of IIRA and RAMI 4.0, discussing needs, benefits, and challenges of applying cloud computing and big data in the Industry 4.0.","PeriodicalId":188846,"journal":{"name":"J. Comput. Sci. Technol.","volume":"86 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-12-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117082728","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: 34
Interactions in Visualization 可视化中的交互
J. Comput. Sci. Technol. Pub Date : 2018-10-10 DOI: 10.24215/16666038.18.e20
M. L. Ganuza
{"title":"Interactions in Visualization","authors":"M. L. Ganuza","doi":"10.24215/16666038.18.e20","DOIUrl":"https://doi.org/10.24215/16666038.18.e20","url":null,"abstract":"Resumen de la Tesis de Doctorado presentada por la autora el 16 de marzo de 2018 en la UNS para la obtencion del titulo de Doctor en Ciencias de la Computacion","PeriodicalId":188846,"journal":{"name":"J. Comput. Sci. Technol.","volume":"209 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-10-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117102041","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: 0
Other potential problems in Qlink.it Qlink.it的其他潜在问题
J. Comput. Sci. Technol. Pub Date : 2018-10-09 DOI: 10.24215/16666038.18.E18
Antonio Castro Lechtaler, Marcelo Cipriano, Edith García, Pablo Lázaro, J. Liporace, E. Malvacio, Ariel Maiorano
{"title":"Other potential problems in Qlink.it","authors":"Antonio Castro Lechtaler, Marcelo Cipriano, Edith García, Pablo Lázaro, J. Liporace, E. Malvacio, Ariel Maiorano","doi":"10.24215/16666038.18.E18","DOIUrl":"https://doi.org/10.24215/16666038.18.E18","url":null,"abstract":"In previous work we presented preliminary results obtained by reviewing the source code of Qlink.it web application. In this article, after summarizing previous findings, results of the source code review of Qlink.it Android application will be described. This analysis focused on the implementation of cryptographic functionalities. The aim of this publication is also to invite other researchers to analyze the application in order to determine if Qlink.it could be considered secure.","PeriodicalId":188846,"journal":{"name":"J. Comput. Sci. Technol.","volume":"18 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-10-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127949724","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: 0
Experiences in Learning Problem-Solving through Computational Thinking 通过计算思维学习解决问题的经验
J. Comput. Sci. Technol. Pub Date : 2018-10-09 DOI: 10.24215/16666038.18.E15
Jacqueline Fernández, Mariela Elizabeth Zúñiga, María Verónica Rosas, Roberto Guerrero
{"title":"Experiences in Learning Problem-Solving through Computational Thinking","authors":"Jacqueline Fernández, Mariela Elizabeth Zúñiga, María Verónica Rosas, Roberto Guerrero","doi":"10.24215/16666038.18.E15","DOIUrl":"https://doi.org/10.24215/16666038.18.E15","url":null,"abstract":"Computational Thinking (CT) represents a possible alternative for improving students’ academic performance in higher level degree related to Science, Technology, Engineering and Mathematics (STEM). This work describes two different experimental proposals with the aim of introducing computational thinking to the problem solving issue. The first one was an introductory course in the Faculty of Physical, Mathematical and Natural Sciences (FCFMyN) in 2017, for students enrolled in computer science related careers. The other experience was a first attempt to introduce CT to students and teachers belonging to not computer related faculties at the National University of San Luis (UNSL). Both initiatives use CT as a mean of improving the problem solving process based on the four following elementary concepts: Decomposition, Abstraction, Recognition of patterns and Algorithm. The results of the experiences indicate the relevance of including CT in the learning problem solving issue in different fields. The experiences also conclude that a mandatory CT related course is necessary for those careers having computational problems solving and/or programming related subjects during the first year of their curricula. Part of this work was presented at the XXIII Argentine Congress of Computer Science (CACIC).","PeriodicalId":188846,"journal":{"name":"J. Comput. Sci. Technol.","volume":"5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-10-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125398451","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: 7
Identifying Key Success Factors in Stopping Flaky Tests in Automated REST Service Testing 识别自动化REST服务测试中停止不稳定测试的关键成功因素
J. Comput. Sci. Technol. Pub Date : 2018-10-09 DOI: 10.24215/16666038.18.E16
M. A. Mascheroni, E. Irrazábal
{"title":"Identifying Key Success Factors in Stopping Flaky Tests in Automated REST Service Testing","authors":"M. A. Mascheroni, E. Irrazábal","doi":"10.24215/16666038.18.E16","DOIUrl":"https://doi.org/10.24215/16666038.18.E16","url":null,"abstract":"A flaky test is a test which could fail or pass for the same version of a certain software code. In continuous software development environments, flaky tests represent a problem. It is difficult to get an effective and reliable testing pipeline with a set of flaky tests. Also, according to many practitioners, despite the persistence of flaky tests in software development, they have not drawn much attention from the research community. In this paper, we describe how a company faced this issue, and implemented solutions to solve flaky tests for REST web services. The paper concludes proposing a set of key success factors for stopping flaky tests in this type of testing.","PeriodicalId":188846,"journal":{"name":"J. Comput. Sci. Technol.","volume":"16 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-10-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124647719","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
Are GPUs Non-Green Computing Devices? gpu不是绿色计算设备吗?
J. Comput. Sci. Technol. Pub Date : 2018-10-09 DOI: 10.24215/16666038.18.E17
M. P. Puig, Laura C. De Giusti, M. Naiouf
{"title":"Are GPUs Non-Green Computing Devices?","authors":"M. P. Puig, Laura C. De Giusti, M. Naiouf","doi":"10.24215/16666038.18.E17","DOIUrl":"https://doi.org/10.24215/16666038.18.E17","url":null,"abstract":"With energy consumption emerging as one of the biggest issues in the development of HPC (High Performance Computing) applications, the importance of detailed power-related research works becomes a priority. In the last years, GPU coprocessors have been increasingly used to accelerate many of these high-priced systems even though they are embedding millions of transistors on their chips delivering an immediate increase on power consumption necessities. This paper analyzes a set of applications from the Rodinia benchmark suite in terms of CPU and GPU performance and energy consumption. Specifically, it compares single-threaded and multi-threaded CPU versions with GPU implementations, and characterize the execution time, true instant power and average energy consumption to test the idea that GPUs are power-hungry computing devices.","PeriodicalId":188846,"journal":{"name":"J. Comput. Sci. Technol.","volume":"58 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-10-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127488205","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
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