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15th Annual International Conference on Computational Science (ICCS)

作者： Dutka, Lukasz Wrzeszcz, Michal Lichon, Tomasz Slota, Rafal Zemek, Konrad Trzepla, Krzysztof Opiola, Lukasz Slota, Renata Kitowski, Jacek AGH Univ Sci & Technol Acad Comp Ctr Cyfronet AGH Krakow Poland AGH Univ Sci & Technol Dept Comp Sci Krakow Poland

To satisfy requirements of data globalization and high performance access in particular, we introduce the originally created onedata system which virtualizes storage systems provided by storage resource providers distributed globally. onedata introduces new data organization concepts together with providers' cooperation procedures that involve use of Global Registry as a mediator. The most significant features include metadata synchronization and on-demand file transfer.

关键词： virtual file system heterogeneous storage systems Grid distributed systems

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Onedata – A Step Forward towards Globalization of Data Access for Computing Infrastructures

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Procedia Computer Science 2015年 51卷 2843-2847页

作者： Łukasz Dutka Michal Wrzeszcz Tomasz Lichoń Rafał Słota Konrad Zemek Krzysztof Trzepla Łukasz Opioła Renata Słota Jacek Kitowski AGH University Academic Computer Centre Cyfronet AGH Krakow Poland AGH University Department of Computer Science Krakow Poland

To satisfy requirements of data globalization and high performance access in particular, we introduce the originally created onedata system which virtualizes storage systems provided by storage resource providers distributed globally. onedata introduces new data organization concepts together with providers’ cooperation procedures that involve use of Global Registry as a mediator. The most significant features include metadata synchronization and on-demand file transfer.

关键词： virtual file system heterogeneous storage systems Grid distributed systems

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Introduction of a file-system with Integrated Scaling Capability

Introduction of a File-System with Integrated Scaling Capabi...

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SMPTE Technical Conference

作者： Heiko Sparenberg Siegfried Foessel Fraunhofer Institute for Integrated Circuits Germany

ISBN: (纸本)9781510823389

For decades, scalable image coding — also referred to as hierarchical-coding — has been an integral part of several standardization activities at JPEG and MPEG. Designed to compensate for slow data-networks, storage-devices or insufficient decoding resources, one may find it surprising, that only very few commercially-available products use this technology today. So why are we not using scalability, even if the advantages sound so convincing? Well, a major disadvantage is certainly the complexity coming with this technology. Often, scalability could solve a technical issue, but workarounds are simply easier to realize. Especially, since each hard- and software would have to implement scalability on its own. To address this issue, we introduce a centralized component within a computers operating system taking care of the scalability. Implemented as a file-system using so-called “parametrized file-requests” we demonstrate a first prototype of such a centralized component, enabling 3 rd -party software to use scalability without any additional implementation.

关键词： Scalable media Hierarchical image compression virtual file system JPEG 2000 JPEG Scalability VFS Moving Pictures Experts Group image coding computer software Computers SOS Calls

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A New Hybrid Storage system Base on Openstack

A New Hybrid Storage System Base on Openstack

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International Conference on Mechatronics Engineering and Computing Technology (ICMECT)

作者： Wu Dingwei Wu Qiang Fu XiCheng Ye Zhizhong Lin Jialun Hainan Med Univ Affiliated Hosp Haikou 570102 Hainan Peoples R China Huazhong Univ Sci & Technol Mech Engn Huazhong Wuhan 430074 Hubei Peoples R China Hainan Inst Sci & Technol Hainan 570000 Peoples R China Hainan Inst Sci & Technol Hainan 570216 Peoples R China

ISBN: (纸本)9783038351153

In recent years, hybrid storage has gradually become a hotspot in the research of data storage owing to its high-performance and low cost. An OpenStack-based hybrid storage system is presented in this paper. According to the characteristics, the data is divided into small data, big data and temporary data in this hybrid storage system;meanwhile a storage strategy, combining database storage system, the virtual file system and servers file system, is designed. In the application of iCampus project, this proposed hybrid storage system shows better performance and higher efficiency than the traditional single storage systems.

关键词： hybrid storage cloud computing OpenStack virtual file system

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The use of locality information on data intensive parallel file systems

The use of locality information on data intensive parallel f...

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IEEE 16th International Conference on Computational Science and Engineering (CSE)

作者： Sugawara Junior, Ricardo Ryoiti Sato, Liria Matsumoto Univ Sao Paulo Dept Comp & Digital Syst Engn Sao Paulo Brazil

Many recent data intensive parallel systems builds with cost effective hardware and combine compute and storage facilities. Since bandwidth-bisecting networks are the norm, distributing jobs near data provides significant performance improvements. However, the data locality information is not easily available to the programmer. It requires interaction with file system internals, or the adoption of a custom programming and run-time frameworks that provide locality-aware job scheduling, such as Mapreduce and Hadoop. In this paper, we present a parallel file system implementation combined with virtual files presented as text that can be queried for locality data or written to control the placement of new data blocks. This simplifies how software that do not adhere to Mapreduce's model can benefit from computing near the data. To evaluate the proposed approach, a number of tests were run on an initial implementation using fast disks, with locality-aware cases showing from 2 to 9 times faster reads and higher processor utilization.

关键词： Data Intensive Locality Parallel file system Hadoop virtual file system

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Real-time Capable file system for Scalable Media Algorithms & Caching Strategy for Exploiting Scalability on file system Level

Real-time Capable File System for Scalable Media Algorithms ...

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29th Picture Coding Symposium (PCS)

作者： Sparenberg, Heiko Martin, Matthias Foessel, Siegfried Fraunhofer IIS Moving Picture Technol Erlangen Germany

ISBN: (纸本)9781457720482

Professional movie distribution and mastering formats use high quality, intra-frame compression formats like JPEG 2000, a codec allowing for scalability in resolution and quality. Latest processor types, either CPUs or high-end GPUs, can decode digital cinema-compliant JPEG 2000 image sequences in real-time. This brings out a new bottleneck during a movie playback since current consumer hard-drives are not fast enough for data rates being used in digital cinema or digital archiving. This paper shows a method for using file-inherent scalability on file system level as well as a caching strategy especially adapted for scalable media files.

关键词： component real-time virtual file system caching for scalable media JPEG 2000 image/video data compression

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Generic virtual filesystems for Reconfigurable Devices

Generic Virtual Filesystems for Reconfigurable Devices

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IEEE International Symposium on Circuits and systems

作者： Krill, Benjamin Amira, Abbes Rabah, Hassan Univ Ulster NIBEC Coleraine BT37 0QB Londonderry North Ireland

ISBN: (纸本)9781467302197

Recent Xilinx field programmable gate arrays (FPGAs) enables embedded systems to adapt their hardware functionalities at run-time using dynamic partial reconfiguration (DPR). This paper presents a generic file system to support standard operating systems (OS) for efficient FPGA resources management and implementation of intellectual property (IP) cores using DPR technology. The proposed generic file system for FPGAs (FPGAFS) provides a generic and flexible solution to abstract the hardware resources such as DPR regions. FPGAFS concept is described and has been validated through the implementation of image processing IP cores. Evaluation of framework performance is also carried out to identify different trad-offs and bottlenecks.

关键词： partial dynamic reconfiguration virtual file system abstraction embedded systems solutions

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The Design and Implementation of Android file Access Control system

The Design and Implementation of Android File Access Control...

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International Conference on Business Computing and Global Informatization

作者： Linya Huang Qiaoyan Wen State Key Laboratory of Networking and Switching Technology Beijing University of Posts and Telecommunications

ISBN: (纸本)9781467344692

Android is a popular operating system on mobile devices, and people care about the security issues of Android very much. Based on the analysis of the defects in Android security mechanism, this paper proposes the design and implementation of an Android file Access Control system that supplies authorization and authentication to the file operations in order to prevent the sensitive files. The simulation results indicate that the Android file Access Control system achieves the goal of file access control on Android.

关键词： Android Access control Linux kernel virtual file system

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Real Time file system for Content Distribution

Real Time File System for Content Distribution

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SMPTE Technical Conference

作者： Heiko Sparenberg Siegfried Foessel Fraunhofer Institute for Integrated Circuits Germany

ISBN: (纸本)9781622765386

This presentation gives a deep view into the development of a file system, especially designed for scalable media files including JPEG 2000 and H.264 SVC. By applying specially developed techniques, including the Substitution Strategy, a real-time capable file-system can be built, even if the mass storage, or the interface to it, is too slow to deliver the data in the desired time. Rather than skipping whole files, new caching strategies will be shown that again, take advantage of the file-inherent scalability. — The presented system also comprises an advanced user-rights-management that allows for granting access-rights to certain parts of a scalable file, rather than granting rights to whole files. Users will therefore get a different version of an image or video, dependent on their current access-rights.

关键词： Real-time virtual file system Caching for scalable media JPEG 2000 Image/video data compression Content distribution Eviction policy file systems mass memory JPEG Scalability Content distribution Imagery (Psychotherapy) images

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GRAVY:: Towards virtual file system for the grid

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2nd International Conference on Grid and Pervasive Computing

作者： Nguyen, Thi-Mai-Huong Magoules, Frederic Revillon, Cedric Ecole Cent Paris Grande Voie Vignes Appl Math & Syst Lab F-92295 Chatenay Malabry France United Devices Europe F-92807 Puteaux La Defense France

ISBN: (纸本)9783540723592

Today large-scale applications require access to data stored in heterogeneous storage systems located at geographically distributed virtual organizations. In such applications, users are forced to deal with different administrative policies and structures at each site, and various data access mechanisms on each storage system. This implies a lot of human interventions in order to develop dedicated programs and scripts for data transfer between theses systems. This paper presents GRid-enAbled virtual file system (GRAVY) architecture which enables the automation of data transfers between distributed file systems irrespective of their heterogeneity. This feature enables high-level schedulers integrated with GRAVY to control data placements like computational jobs. GRAVY supports multiple data access protocols and provides an easy-to-use interface for novice Grid users.

关键词： virtual file system grid-computing data management interoperability middleware

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