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Displaying 1-34 out of 34 total
Improved Read Performance in a Cost-Effective, Fault-Tolerant Parallel Virtual File System (CEFT-PVFS)
Found in: Cluster Computing and the Grid, IEEE International Symposium on
By Yifeng Zhu, Hong Jiang, Xiao Qin, Dan Feng, David R. Swanson
Issue Date:May 2003
pp. 730
Due to the ever-widening performance gap between processors and disks, I/O operations tend to become the major performance bottleneck of data-intensive applications on modern clusters. If all the existing disks on the nodes of a cluster are connected toget...
 
SANE: Semantic-Aware Namespacein Ultra-Large-Scale File Systems
Found in: IEEE Transactions on Parallel and Distributed Systems
By Yu Hua,Hong jiang,Yifeng Zhu,Dan Feng,Lei Xu
Issue Date:May 2014
pp. 1328-1338
The explosive growth in data volume and complexity imposes great challenges for file systems. To address these challenges, an innovative namespace management scheme is in desperate need to provide both the ease and efficiency of data access. In almost all ...
 
Accelerating write by exploiting PCM asymmetries
Found in: 2013 IEEE 19th International Symposium on High Performance Computer Architecture (HPCA)
By Jianhui Yue,Yifeng Zhu
Issue Date:February 2013
pp. 282-293
To improve the write performance of PCM, this paper proposes a new write scheme, called two-stage-write, which leverages the speed and power difference between writing a zero bit and writing a one bit. Writing a one takes longer time but less electrical cu...
 
High Performance and High Capacity Hybrid Shingled-Recording Disk System
Found in: 2012 IEEE International Conference on Cluster Computing (CLUSTER)
By Jiguang Wan,Nannan Zhao,Yifeng Zhu,Jibin Wang,Yu Mao,Peng Chen,Changsheng Xie
Issue Date:September 2012
pp. 173-181
Areal density scaling in magnetic hard drives isin jeopardy as magnetic particles become unstable when they are sufficiently small. Shingled recording holds great promise to mitigate the problem of density scaling cost-effectively by overlapping data track...
 
Making Write Less Blocking for Read Accesses in Phase Change Memory
Found in: 2012 IEEE 20th International Symposium on Modelling, Analysis & Simulation of Computer and Telecommunication Systems (MASCOTS)
By Jianhui Yue,Yifeng Zhu
Issue Date:August 2012
pp. 269-277
Phase-change Memory (PCM) is a promising alternative or complement to DRAM for its non-volatility, scalable bit density, and fast read performance. Nevertheless, PCM has two serious challenges including extraordinarily slow write speed and less-than-desira...
 
C-IRR: An Adaptive Engine for Cloud Storage Provisioning Determined by Economic Models with Workload Burstiness Consideration
Found in: 2012 IEEE 7th International Conference on Networking, Architecture, and Storage (NAS)
By Jianzong Wang,Rui Hua,Yifeng Zhu,Changsheng Xie,Peng Wang,Weijiao Gong
Issue Date:June 2012
pp. 79-83
Being the long dreamed vision of computing as a utility, cloud enables convenient and on-demand access to a large centralized pool of resources via network. The emerging of cloud storage offers a rather feasible solution to handle the sheer amount of infor...
 
RO-BURST: A Robust Virtualization Cost Model for Workload Consolidation over Clouds
Found in: Cluster Computing and the Grid, IEEE International Symposium on
By Jianzong Wang,Rui Hua,Yifeng Zhu,Jiguang Wan,Changsheng Xie,Yanjun Chen
Issue Date:May 2012
pp. 490-497
As more public cloud computing platforms are emerging in the market, a great challenge for these Infrastructure as a Server (IaaS) providers is how to measure the cost and charge the Software as a Service (SaaS) clients for the cloud computing services. Th...
 
Energy Efficient Buffer Cache Replacement for Data Servers
Found in: Networking, Architecture, and Storage, International Conference on
By Jianhui Yue,Yifeng Zhu,Zhao Cai,Lin Lin
Issue Date:July 2011
pp. 329-338
Power consumption is an increasingly impressing concern for data servers as it directly affects running costs and system reliability. Prior studies have shown that most memory space on data servers is used for buffer caching and thus cache replacement beco...
 
Hot Random Off-Loading: A Hybrid Storage System with Dynamic Data Migration
Found in: Modeling, Analysis, and Simulation of Computer Systems, International Symposium on
By Lin Lin,Yifeng Zhu,Jianhui Yue,Zhao Cai,Bruce Segee
Issue Date:July 2011
pp. 318-325
Random accesses are generally harmful to performance in hard disk drives due to more dramatic mechanical movement. This paper presents the design, implementation, and evaluation of Hot Random Off-loading (HRO), a self-optimizing hybrid storage system that ...
 
Semantic-Aware Metadata Organization Paradigm in Next-Generation File Systems
Found in: IEEE Transactions on Parallel and Distributed Systems
By Yu Hua,Hong Jiang,Yifeng Zhu,Dan Feng,Lei Tian
Issue Date:February 2012
pp. 337-344
Existing data storage systems based on the hierarchical directory-tree organization do not meet the scalability and functionality requirements for exponentially growing data sets and increasingly complex metadata queries in large-scale, Exabyte-level file ...
 
Energy Modeling of Wireless Sensor Nodes Based on Petri Nets
Found in: Parallel Processing, International Conference on
By Ali Shareef, Yifeng Zhu
Issue Date:September 2010
pp. 101-110
Energy minimization is of great importance in wireless sensor networks in extending the battery lifetime. Accurately understanding the energy consumption characteristics of each sensor node is a critical step for the design of energy saving strategies. Thi...
 
Supporting Scalable and Adaptive Metadata Management in Ultralarge-Scale File Systems
Found in: IEEE Transactions on Parallel and Distributed Systems
By Yu Hua, Yifeng Zhu, Hong Jiang, Dan Feng, Lei Tian
Issue Date:April 2011
pp. 580-593
This paper presents a scalable and adaptive decentralized metadata lookup scheme for ultralarge-scale file systems (more than Petabytes or even Exabytes). Our scheme logically organizes metadata servers (MDSs) into a multilayered query hierarchy and exploi...
 
A study of self-similarity in parallel I/O workloads
Found in: Mass Storage Systems and Technologies, IEEE / NASA Goddard Conference on
By Qiang Zoll, Yifeng Zhu, Dan Feng
Issue Date:May 2010
pp. 1-6
A challenging issue in performance evaluation of parallel storage systems through trace-driven simulation is to accurately characterize and emulate I/O behaviors in real applications. The correlation study of inter-arrival times between I/O requests, with ...
 
Energy and thermal aware buffer cache replacement algorithm
Found in: Mass Storage Systems and Technologies, IEEE / NASA Goddard Conference on
By Jianhui Yue, Yifeng Zhu, Zhao Cai, Lin Lin
Issue Date:May 2010
pp. 1-10
Power consumption is an increasingly impressing concern for data servers as it directly affects running costs and system reliability. Prior studies have shown most memory space on data servers are used for buffer caching and thus cache replacement becomes ...
 
SmartStore: a new metadata organization paradigm with semantic-awareness for next-generation file systems
Found in: SC Conference
By Yu Hua, Hong Jiang, Yifeng Zhu, Dan Feng, Lei Tian
Issue Date:November 2009
pp. 1-12
Existing storage systems using hierarchical directory tree do not meet scalability and functionality requirements for exponentially growing datasets and increasingly complex queries in Exabyte-level systems with billions of files. This paper proposes seman...
 
A Novel Weighted-Graph-Based Grouping Algorithm for Metadata Prefetching
Found in: IEEE Transactions on Computers
By Peng Gu, Jun Wang, Yifeng Zhu, Hong Jiang, Pengju Shang
Issue Date:January 2010
pp. 1-15
Although data prefetching algorithms have been extensively studied for years, there is no counterpart research done for metadata access performance. Existing data prefetching algorithms, either lack of emphasis on group prefetching, or bearing a high level...
 
Impacts of Indirect Blocks on Buffer Cache Energy Efficiency
Found in: Parallel Processing, International Conference on
By Jianhui Yue, Yifeng Zhu, Zhao Cai
Issue Date:September 2008
pp. 546-553
Indirect blocks, part of a file's metadata used for locating this file's data blocks, are typically treated indistinguishably from file's data blocks in buffer cache. This paper shows that this conventional approach will significantly detriment the overall...
 
Energy Modeling of Processors in Wireless Sensor Networks Based on Petri Nets
Found in: Parallel Processing Workshops, International Conference on
By Ali Shareef, Yifeng Zhu
Issue Date:September 2008
pp. 129-134
Power minimization is a serious issue in wireless sensor networks to extend the lifetime and minimize costs. However, in order to gain an accurate understanding of issues regarding power minimization, modeling techniques capable of accurately predicting en...
 
An Energy-Oriented Evaluation of Buffer Cache Algorithms Using Parallel I/O Workloads
Found in: IEEE Transactions on Parallel and Distributed Systems
By Jianhui Yue, Yifeng Zhu, Zhao Cai
Issue Date:November 2008
pp. 1565-1578
Power consumption is an important issue for cluster supercomputers as it directly affects running cost and cooling requirements. This paper investigates the memory energy efficiency of high-end data servers used for supercomputers. Emerging memory technolo...
 
Scalable and Adaptive Metadata Management in Ultra Large-Scale File Systems
Found in: Distributed Computing Systems, International Conference on
By Yu Hua, Yifeng Zhu, Hong Jiang, Dan Feng, Lei Tian
Issue Date:June 2008
pp. 403-410
This paper presents a scalable and adaptive decentralized metadata lookup scheme for ultra large-scale file systems (≥ Petabytes or even Exabytes). Our scheme logically organizes metadata servers (MDS) into a multi-layered query hierarchy and exploits grou...
 
AMP: An Affinity-Based Metadata Prefetching Scheme in Large-Scale Distributed Storage Systems
Found in: Cluster Computing and the Grid, IEEE International Symposium on
By Lin Lin, Xuemin Li, Hong Jiang, Yifeng Zhu, Lei Tian
Issue Date:May 2008
pp. 459-466
Prefetching is an effective technique for improving file access performance, which can significantly reduce access latency for I/O systems. In distributed storage systems, prefetching for metadata files is critical for the overall system performance. In th...
 
HBA: Distributed Metadata Management for Large Cluster-Based Storage Systems
Found in: IEEE Transactions on Parallel and Distributed Systems
By Yifeng Zhu, Hong Jiang, Jun Wang, Feng Xian
Issue Date:June 2008
pp. 750-763
An efficient and distributed scheme for file mapping or file lookup is critical in decentralizing metadata management within a group of metadata servers. This paper presents a novel technique called HBA (Hierarchical Bloom filter Arrays) to map filenames t...
 
Evaluating memory energy efficiency in parallel I/O workloads
Found in: Cluster Computing, IEEE International Conference on
By Jianhui Yue, Yifeng Zhu, Zhao Cai
Issue Date:September 2007
pp. 21-30
Power consumption is an important issue for cluster supercomputers as it directly affects their running cost and cooling requirements. This paper investigates the memory energy efficiency of high-end data servers used for supercomputers. Emerging memory te...
 
RACE: A Robust Adaptive Caching Strategy for Buffer Cache
Found in: IEEE Transactions on Computers
By Yifeng Zhu, Hong Jiang
Issue Date:January 2008
pp. 25-40
While many block replacement algorithms for buffer caches have been proposed to address the well-known drawbacks of the LRU algorithm, they are not robust and cannot maintain an consistent performance improvement over all workloads. This paper proposes a n...
 
Comparisons of Three Kalman Filter Tracking Algorithms in Sensor Network
Found in: Networking, Architecture, and Storages, International Workshop on
By Yifeng Zhu, Ali Shareef
Issue Date:August 2006
pp. 61-62
This paper compares extended Kalman filters with the P, PV and PVA dynamics models for object tracking in wireless network. Experiments shows that PVA achieves the best and P performs the worst in most cases. In addition, increasing the number of pivots ca...
 
False Rate Analysis of Bloom Filter Replicas in Distributed Systems
Found in: Parallel Processing, International Conference on
By Yifeng Zhu, Hong Jiang
Issue Date:August 2006
pp. 255-262
Recently, Bloom filters have been widely used in distributed systems where they are replicated to process distributed queries. Bloom filter replicas become stale in a dynamic environment. A good understanding of the impact of staleness on false negatives a...
 
Nexus: A Novel Weighted-Graph-Based Prefetching Algorithm for Metadata Servers in Petabyte-Scale Storage Systems
Found in: Cluster Computing and the Grid, IEEE International Symposium on
By Peng Gu, Yifeng Zhu, Hong Jiang, Jun Wang
Issue Date:May 2006
pp. 409-416
An efficient, accurate and distributed metadataoriented prefetching scheme is critical to the overall performance in large distributed storage systems. In this paper, we present a novel weighted-graph-based prefetching technique, built on successor relatio...
 
Towards Load Balancing Support for I/O-Intensive Parallel Jobs in a Cluster of Workstations
Found in: Cluster Computing, IEEE International Conference on
By Xiao Qin, Hong Jiang, Yifeng Zhu, David R. Swanson
Issue Date:December 2003
pp. 100
While previous CPU- or memory-centric load balancing schemes are capable of achieving the effective usage of global CPU and memory resources in a cluster system, the cluster exhibits significant performance drop under I/O-intensive workload conditions due ...
 
A Case Study of Parallel I/O for Biological Sequence Search on Linux Clusters
Found in: Cluster Computing, IEEE International Conference on
By Yifeng Zhu, Hong Jiang, Xiao Qin, David Swanson
Issue Date:December 2003
pp. 308
<p>In this paper we analyze the I/O access patterns of a widely-used biological sequence search tool and implement two variations that employ parallel-I/O for data access based on PVFS (Parallel Virtual File System) and CEFT-PVFS (Cost-Effective Faul...
 
Boosting Performance for I/O-Intensive Workload by Preemptive Job Migrations in a Cluster System
Found in: Computer Architecture and High Performance Computing, Symposium on
By Xiao Qin, Hong Jiang, Yifeng Zhu, David R. Swanson
Issue Date:November 2003
pp. 235
Load balancing in a cluster system has been investigated extensively, mainly focusing on the effective usage of global CPU and memory resources. However, if a significant portion of applications running in the system is I/O-intensive, traditional load bala...
 
A Dynamic Load Balancing Scheme for I/O-Intensive Applications in Distributed Systems
Found in: Parallel Processing Workshops, International Conference on
By Xiao Qin, Hong Jiang, Yifeng Zhu, David R. Swanson
Issue Date:October 2003
pp. 79
In this paper, a new I/O-aware load-balancing scheme is presented to improve overall performance of a distributed system with a general and practical workload including I/O activities. The proposed scheme dynamically detects I/O load imbalance on nodes of ...
 
A New Parity-Based Migration Method to Expand RAID-5
Found in: IEEE Transactions on Parallel and Distributed Systems
By Yu Mao,Jiguang Wan,Yifeng Zhu,Changsheng Xie
Issue Date:August 2014
pp. 1945-1954
To expand the capacity of a RAID-5 array with additional disks, data have to be migrated between disks to leverage extra space and performance gain. Conventional methods for expanding RAID-5 are very slow because they have to migrate almost all existing da...
 
Hierarchical Bloom filter arrays (HBA): a novel, scalable metadata management system for large cluster-based storage
Found in: Cluster Computing, IEEE International Conference on
By Yifeng Zhu, Hong Jiang, J. Wang
Issue Date:September 2004
pp. 165-174
An efficient and distributed scheme for file mapping or file lookup scheme is critical in decentralizing metadata management within a group of metadata servers. This work presents a technique called HBA (hierarchical Bloom filter arrays) to map file names ...
 
SmartStore: a new metadata organization paradigm with semantic-awareness for next-generation file systems
Found in: Proceedings of the Conference on High Performance Computing Networking, Storage and Analysis (SC '09)
By Dan Feng, Hong Jiang, Lei Tian, Yifeng Zhu, Yu Hua
Issue Date:November 2009
pp. 1-12
Existing storage systems using hierarchical directory tree do not meet scalability and functionality requirements for exponentially growing datasets and increasingly complex queries in Exabyte-level systems with billions of files. This paper proposes seman...
     
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