Filters








11 Hits in 3.0 sec

ACIC

Mingliang Liu, Ye Jin, Jidong Zhai, Yan Zhai, Qianqian Shi, Xiaosong Ma, Wenguang Chen
2013 Proceedings of the 22nd international symposium on High-performance parallel and distributed computing  
To tackle the highlighted I/O bottleneck problem in cloud, we propose ACIC, a system which automatically searches for optimized I/O system configurations from many candidates for each individual application  ...  The top ACIC-recommended configuration improves the applications' performance by a factor of up to 10.5 (3.0 on average), and cost saving of up to 89% (53% on average), compared with a commonly used baseline  ...  We propose ACIC (Automatic Cloud I/O Configurator), which automatically searches for optimized I/O system configurations from many candidates for each individual application running on a given cloud platform  ... 
doi:10.1145/2462902.2462923 fatcat:ki5n5ejy2zggpkl3lotimswqkm

ACIC

Mingliang Liu, Ye Jin, Jidong Zhai, Yan Zhai, Qianqian Shi, Xiaosong Ma, Wenguang Chen
2013 Proceedings of the International Conference for High Performance Computing, Networking, Storage and Analysis on - SC '13  
This paper proposes ACIC, which takes a given application running on a given cloud platform, and automatically searches for optimized I/O system configurations.  ...  It has been observed that changing cloud I/O system configurations leads to significant variation in the performance and cost efficiency of I/O intensive HPC applications.  ...  Acknowledgments We sincerely thank the anonymous reviewers for their valuable comments and suggestions. We also thank Frans Kaashoek and Xianhe Sun for their useful early feedback on our work.  ... 
doi:10.1145/2503210.2503216 dblp:conf/sc/LiuJZZSMC13 fatcat:6p7d3z5ttbbp5ilpjdw5imsd3a

ACIC

Mingliang Liu, Ye Jin, Jidong Zhai, Yan Zhai, Qianqian Shi, Xiaosong Ma, Wenguang Chen
2013 Proceedings of the 22nd international symposium on High-performance parallel and distributed computing - HPDC '13  
To tackle the highlighted I/O bottleneck problem in cloud, we propose ACIC, a system which automatically searches for optimized I/O system configurations from many candidates for each individual application  ...  The top ACIC-recommended configuration improves the applications' performance by a factor of up to 10.5 (3.0 on average), and cost saving of up to 89% (53% on average), compared with a commonly used baseline  ...  We propose ACIC (Automatic Cloud I/O Configurator), which automatically searches for optimized I/O system configurations from many candidates for each individual application running on a given cloud platform  ... 
doi:10.1145/2493123.2462923 fatcat:hvx4sdnqrrek7gyu75wezomiua

Experiences in using os-level virtualization for block I/O

Dan Huang, Jun Wang, Qing Liu, Jiangling Yin, Xuhong Zhang, Xunchao Chen
2015 Proceedings of the 10th Parallel Data Storage Workshop on - PDSW '15  
In this paper, we thoroughly evaluate the overhead and isolation involved in sharing block I/O via OS-level virtualization on the local disk and D/PFSs.  ...  With virtualization technology, users can run their applications on the same node with low mutual interference.  ...  for Data Intensive Super-Computing and High Performance Computing (PRObE).  ... 
doi:10.1145/2834976.2834982 dblp:conf/sc/HuangWLYZC15 fatcat:y2eck5tvirhg7jwgsynlmfarhm

Self-Adaptive Density Estimation of Particle Data

Tom Peterka, Hadrien Croubois, Nan Li, Esteban Rangel, Franck Cappello
2016 SIAM Journal on Scientific Computing  
The study features a methodology for evaluating the accuracy and performance of various density estimation methods, results of that evaluation for four density estimators, and a large-scale parallel algorithm  ...  for a self-adaptive method that computes a Voronoi tessellation as an intermediate step.  ...  The I/O component for the 2D bars is too small to be visible, taking approximately 0.25 seconds.  ... 
doi:10.1137/15m1016308 fatcat:y2bk6hz6bbam5iiyg4srerywpm

Towards Transparent Throughput Elasticity for IaaS Cloud Storage

Bogdan Nicolae, Pierre Riteau, Kate Keahey
2015 International Journal of Distributed Systems and Technologies  
This paper provides a transparent solution that automatically boosts I/O bandwidth during peaks for underlying virtual disks, effectively avoiding over-provisioning without performance loss.  ...  Storage elasticity on IaaS clouds is a crucial feature in the age of data-intensive computing, especially when considering fluctuations of I/O throughput.  ...  Specifically in the area of storage, efforts such as ACIC [16] automatically search for optimized I/O system configurations, relying on machine learning models to perform black-box performance/cost predictions  ... 
doi:10.4018/ijdst.2015100102 fatcat:shu5qmyq3jc65cbakwokla43zy

Using AWS EC2 as Test-Bed infrastructure in the I/O system configuration for HPC applications

Pilar Gomez-Sanchez, Diego Encinas, Javier Panadero, Aprigio Bezerra, Sandra Mendez, Marcelo Naiouf, Armando De Giusti, Dolores Rexachs, Emilio Luque
unpublished
Our experimental validation indicates that virtual clusters are a quick and easy solution for system administrators, for analyzing the impact of the I/O system on the I/O kernels of the parallel applications  ...  These kinds of platforms can be used by system administrators as Test-Bed systems for evaluating and detecting performance inefficiencies in the I/O subsystem, and for taking decisions about the configuration  ...  application.  ... 
fatcat:mbgcbfupv5hahpkvdctfslxzcy

Hopes and Facts in Evaluating the Performance of HPC-I/O on a Cloud Environment

Pilar Gomez-Sanchez, Sandra Mendez, Dolores Rexachs, Emilio Luque
2015 unpublished
From the parallel application I/O model automatically extracted with our tool PAS2P-IO, we obtain the I/O requirements and then the user can select the Virtual Cluster that meets the application requirements  ...  In this paper, we propose a methodology to quickly evaluate the performance and cost of Virtual Clusters for parallel scientific application that uses parallel I/O.  ...  [4] present a tool, ACIC, to optimize the I/O system for HPC applications in cloud. ACIC allows them to recommend an optimized I/O system configuration according to the user's selected objective.  ... 
fatcat:4z3w3bccwbhmpnnyacoc73dm64

Observatory Reports

1966 Astronomical Journal  
This thermal response was dampened by application of a thermal jacket around the edge face of the mirror.  ...  Other significant results included a parallax of +'Í268 ± ':006 for t Ceti, + ':062d= ':009 for GC 25394, and +"029=1="004 for Y5292 for which the catalogue value is +'Í084=h'Í013.  ...  Dunn continued measuring and calculating cross sections for dissociative collisions of molecular ions as a function of impacting particle energy, with emphasis on dissociation of H 2 + by photons and electrons  ... 
doi:10.1086/109977 fatcat:xnamfrkt6nf2dmkxd63jebmchy

Destination Moon: A History of the Lunar Orbiter Program

Barton C. Hacker, Bruce K. Byers
1979 Technology and Culture  
I-O.  ...  After completion of the Site I-O photography ten more exposures were made with the 610 mm lens for purposes of evaluating exposure 26, the first picture of the four-frame sequence after photographing Site  ...  Lunar Orbiter photographic data has provided the only applicable source f'or making large-scale maps ot the Apollo landing zone. How this is done constitutes the subject ot the article.  ... 
doi:10.2307/3103885 fatcat:dxpgwwjo4jbh3e3cvci3duruxm

New Jersey GIS Resource Guide 1996

Henry L. Garie, Patricia E. Cummens, Bob Cubbereley, Lou Jacoby, Curtis Price
1996
They are state-of-tthe-art technology for data management and decision support that consists of computer hardware and software that simultaneously manipulates both geographic and associated tabular databases  ...  The Board will help establish policies for the IDSN, review membership applications, and develop data standards where appropriate.  ...  For example, the Department uses the Cowardin et al. (1979) system for the Classification of Wetland and Subaqueous Lands in the United States as adopted by the National Wetlands Inventory of the U.S  ... 
doi:10.7282/t35h7fnc fatcat:ual5zmpp3zd3nelyzwygxzuuqy