Florida International University

Displaying 1-40 of 56 results

  • White Papers // Jan 2014

    On-Line Algorithms for Dynamic Voltage Scaling in Fixed-Priority Real-Time Systems

    Dynamic Voltage Scaling (DVS) is an effective technique for reducing energy consumption in real-time embedded systems. Online DVS can exploit the run-time variations in task execution to further reduce energy. The authors present an on-line scheduling algorithm called low power Limited Demand Analysis with Transition overhead (lpLDAT) for hard real-time...

    Provided By Florida International University

  • White Papers // Nov 2013

    Energy Minimization for Fault Tolerant Real-Time Applications on Multiprocessor Platforms Using Checkpointing

    Relentless technology scaling not only dramatically increases the energy consumption of modern processors, it also makes processors less reliable. In this paper, the authors study the energy minimization problem for real-time applications on multi-processor platforms while tolerating K transient faults using check-pointing. They first introduce an efficient method to determine...

    Provided By Florida International University

  • White Papers // May 2013

    Two-Level Throughput and Latency IO Control for Parallel File Systems

    Existing parallel file systems are unable to provide both throughput and response time guarantees for concurrent parallel applications. This limitation prevents different, competing applications from getting their desired performance as high-Performance Computing (HPC) systems continue to scale up and be used in a shared environment. This paper presents a new...

    Provided By Florida International University

  • White Papers // May 2013

    Online Resource Management for Data Center with Energy Capping

    The past few years have been witnessing a surging demand for cloud computing services, resulting in a huge carbon footprint and making energy cost one of the top operational costs of data centers. Meanwhile, as sustainable computing has become increasingly important, data centers are constantly pressured to cap the long-term...

    Provided By Florida International University

  • White Papers // Feb 2013

    A Trace-driven Analysis of Solid-State Caching in Cloud Computing Systems

    Distributed storage systems (e.g., SAN and iSCSI) are commonly used in the emerging cloud computing systems to provide Virtual Machine (VM) storage, for efficient storage utilization and fast VM migration. However, as the size of cloud systems and the number of hosted VMs rapidly grow, the scalability of shared VM...

    Provided By Florida International University

  • White Papers // Nov 2012

    Efficient VM Placement With Multiple Deterministic and Stochastic Resources in Data Centers

    Virtual Machines (VMs) may significantly improve the efficiency of data center infrastructure by sharing resources of physical servers. This benefit relies on an efficient VM placement scheme to minimize the number of required servers. Existing VM placement algorithms usually assume that VMs' demands for resources are deterministic and stable. However,...

    Provided By Florida International University

  • White Papers // Nov 2012

    Depth-First Worst-Fit Search Based Multipath Routing for Data Center Networks

    Modern Data Center Networks (DCNs) often use multi-rooted topologies, which offer multipath capability, for increased bandwidth and fault tolerance. However, traditional routing algorithms for the Internet have no or limited support for multipath routing, and cannot fully utilize available bandwidth in such DCNs. In this paper, the authors study the...

    Provided By Florida International University

  • White Papers // Nov 2012

    The Design of a Community Science Cloud: The Open Science Data Cloud Perspective

    In this paper, the authors describe the design, and implementation of the Open Science Data Cloud, or OSDC. The goal of the OSDC is to provide petabyte-scale data cloud infrastructure and related services for scientists working with large quantities of data. Currently, the OSDC consists of more than 2000 cores...

    Provided By Florida International University

  • White Papers // Sep 2012

    Continuous Mobile Authentication Using Touchscreen Gestures

    Securing the sensitive data stored and accessed from mobile devices makes user authentication a problem of paramount importance. The tension between security and usability renders however the task of user authentication on mobile devices a challenging task. This paper introduces FAST (Fingergestures Authentication System using Touchscreen), a novel touchscreen based...

    Provided By Florida International University

  • White Papers // Aug 2012

    Self-adaptive Cloud Capacity Planning

    The popularity of cloud service spurs the increasing demands of cloud resources to the cloud service providers. Along with the new business opportunities, the pay-as-you-go model drastically changes the usage pattern and brings technology challenges to effective capacity planning. In this paper, the authors propose a new method for cloud...

    Provided By Florida International University

  • White Papers // Jul 2012

    Cloud Application Resource Mapping and Scaling Based on Monitoring of QoS Constraints

    Infrastructure as a Service (IaaS) clouds promise unlimited raw computing resources on-demand. However, the performance and granularity of these resources can vary widely between providers. Cloud computing users, such as Web developers, can benefit from a service which automatically maps performance non-functional requirements to these resources. The authors propose a...

    Provided By Florida International University

  • White Papers // May 2012

    Belief-Based Cleaning in Trajectory Sensor Streams

    The imprecision in data streams received at the base station is common in mobile wireless sensor networks. The movement of sensors leads to dynamic spatio-temporal relationships among sensors and invalidates the data cleaning techniques designed for stationary networks. As one of the first methods designed for mobile environments, the authors...

    Provided By Florida International University

  • White Papers // May 2012

    Hiding Trajectory on the Fly

    The rapid development in micro-computing has allowed implementations of complex mobile Wireless Sensor Networks (mWSNs). Privacy invasion is becoming an indispensable issue along with the increasing range of applications of mWSNs. Private trajectory information not only indicates the movements of mobile sensors, but also reveals personal preferences and habits of...

    Provided By Florida International University

  • White Papers // May 2012

    Dynamic Block-Level Cache Management for Cloud Computing Systems

    Block-level distributed storage systems (e.g., SAN, iSCSI) are commonly used in the emerging cloud computing systems to provide Virtual Machine (VM) storage. They allow fast VM migration across different hosts and improved VM availability leveraging typical fault-tolerance measures (e.g., RAID) available in such storage systems. However, as the size of...

    Provided By Florida International University

  • White Papers // Feb 2012

    Power and Energy Analysis on Intel Single-Chip Cloud Computer System

    Improving the computing performance of the multicore and many-core systems is one of the primary interests to computer architecture researchers currently. Message Passing Interface (MPI) and Multi-core techniques are converged to solve this problem. With performance enhancement, the power and energy consumption increase correspondingly. The Single-Chip Cloud Computer (SCC) is...

    Provided By Florida International University

  • White Papers // Jan 2012

    ASAP: A Self-Adaptive Prediction System for Instant Cloud Resource Demand Provisioning

    The promise of cloud computing is to provide computing resources instantly whenever they are needed. The state-of-art Virtual Machine (VM) provisioning technology can provision a VM in tens of minutes. This latency is unacceptable for jobs that need to scale out during computation. To truly enable on-the-fly scaling, new VM...

    Provided By Florida International University

  • White Papers // Sep 2011

    Using Lightweight Virtual Machines to Run High Performance Computing Applications: The Case of the Weather Research and Forecasting Model

    There are many scientific applications that have high performance computing demands. Such demands are traditionally supported by cluster- or Grid-based systems. Cloud computing, which has experienced a tremendous growth, emerged as an approach to provide on-demand access to computing resources. The cloud computing paradigm offers a number of advantages over...

    Provided By Florida International University

  • White Papers // Jul 2011

    Paravirtualization for Scientific Computing: Performance Analysis and Prediction

    Resource virtualization technologies have recently increased in popularity. The emergence of cloud computing, which requires provisioning isolated environments on shared resources, is one reason for this. Virtualization adds flexibility in terms of resource provisioning, but it can impact application performance. In this paper, the authors analyze the performance of medical...

    Provided By Florida International University

  • White Papers // Jun 2011

    Scalable Link-Based Personalization for Ranking in Entity-Relationship Graphs

    Authority flow techniques like PageRank and ObjectRank can provide personalized ranking of typed entity-relationship graphs. There are two main ways to personalize authority flow ranking: Node-based personalization, where authority originates from a set of user-specific nodes; Edge-based personalization, where the importance of different edge types is user-specific. The authors propose...

    Provided By Florida International University

  • White Papers // Jun 2011

    Challenges and Directions in Formalizing the Semantics of Modeling Languages

    Developing software from models is a growing practice and there exist many model-based tools (e.g., editors, interpreters, debuggers, and simulators) for supporting model-driven engineering. Even though these tools facilitate the automation of software engineering tasks and activities, such tools are typically engineered manually. However, many of these tools have a...

    Provided By Florida International University

  • White Papers // Jun 2011

    Towards Scalable Application Checkpointing With Parallel File System Delegation

    The ever-increasing scale of modern High-Performance Computing (HPC) systems presents a variety of challenges to the Parallel File System (PFS) based storage in these systems. The scalability of application checkpointing is a particularly important challenge because it is critical to the reliability of computing and it often dominates the I/Os...

    Provided By Florida International University

  • White Papers // Jun 2011

    PCOUNT: A Power Aware Fetch Policy in Simultaneous Multithreading Processors

    The Simultaneous Multi-Threading (SMT) architecture improves the resource efficiency via scheduling and executing concurrent threads in the same core. Moreover, fetch policies are proposed to assign priorities in the fetch stage to manage the shared resources. However, power consumption study is omitted in most fetch policies. On the other hand,...

    Provided By Florida International University

  • White Papers // May 2011

    A Metamodel for Distributed Ensembles of Virtual Appliances

    The authors present their work on modeling Distributed Ensembles of Virtual Appliances (DEVAs) on Infrastructure as a Service (IaaS) clouds. Designing solutions on IaaS providers require a good understanding of the underlying details such as the software installation or the network configuration. They propose the use of DEVAs, a modeling...

    Provided By Florida International University

  • White Papers // May 2011

    Estimating Application Cache Requirement for Provisioning Caches in Virtualized Systems

    Miss Rate Curves (MRCs) are a fundamental concept in determining the impact of caches on an application's performance. In the authors' research, they use MRCs to provision caches for applications in a consolidated environment. Current techniques for building MRCs at the CPU caches level require changes to the applications and...

    Provided By Florida International University

  • White Papers // May 2011

    Mining Actionable Knowledge for Domain-Driven and Customer-Centric Decision Support

    It has been increasingly critical for businesses to become more customer-centric and more responsive for customer needs. The "Voice Of Customer" (VOC in short) is a general term to describe the stated and unstated customer needs that can be captured through various customer touch-points: sales meetings, surveys, interviews, focus groups,...

    Provided By Florida International University

  • White Papers // May 2011

    CosMig: Modeling the Impact of Reconfiguration in a Cloud

    Clouds allow enterprises to increase or decrease their resource allocation on demand in response to changes in workload intensity. Virtualization is one of the building blocks for cloud computing and provides the mechanisms to implement the dynamic allocation of resources. These dynamic reconfiguration actions lead to performance impact during the...

    Provided By Florida International University

  • White Papers // May 2011

    Truly Non-Blocking Writes

    Writing data within user or operating system memory often encounters the classic read-before-write problem whereby the page written to must first be read from the backing store, effectively blocking the writing process before modifications are made. Unfortunately, the large gap between memory and storage access performance adversely affects workloads that...

    Provided By Florida International University

  • White Papers // May 2011

    Performance Modeling of Virtual Machine Live Migration

    System virtualization is becoming pervasive and it is enabling important new computing diagrams such as cloud computing. Live Virtual Machine (VM) migration is a unique capability of system virtualization which allows applications to be transparently moved across physical machines with a consistent state captured by their VMs. Although live VM...

    Provided By Florida International University

  • White Papers // Jan 2011

    Network Intrusion Detection Design Using Feature Selection of Soft Computing Paradigms

    The network traffic data provided for the design of intrusion detection always are large with ineffective information and enclose limited and ambiguous information about users' activities. The authors study the problems and propose a two phases approach in the intrusion detection design. In the first phase, they develop a correlation-based...

    Provided By Florida International University

  • White Papers // Jan 2011

    A Distributed Multimedia Data Management Over the Grid

    This paper proposes a distributed multimedia data management architecture, which can efficiently store and retrieve multimedia data across several nodes of a Grid environment. The main components of the proposed system comprises of a distributed multidimensional index structure, a distributed query manager handling content-based information retrievals and a load balancing...

    Provided By Florida International University

  • White Papers // Dec 2010

    Cost Effective Storage Using Extent Based Dynamic Tiering

    Multi-tier systems that combine SSDs with SAS/FC and/or SATA disks mitigate the capital cost burden of SSDs, while benefiting from their superior I/O performance per unit cost and low power. Though commercial SSD-based multi-tier solutions are available, configuring such a system with the optimal number of devices per tier to...

    Provided By Florida International University

  • White Papers // Nov 2010

    Cooperative Virtual Machine Scheduling on Multi-Core Multi-Threading Systems - A Feasibility Study

    Virtual Machines (VMs) and Multi-core Multi-threading Micro-Processors (MMMP) are two emerging technologies in software and hardware, respectively, and they are expected to become pervasive on computer systems in the near future. However, the nature of resource sharing on an MMMP introduces contention among VMs which are scheduled onto the cores...

    Provided By Florida International University

  • White Papers // Nov 2010

    RSA Cryptography Acceleration for Embedded System

    Cryptography plays an important role for data security and integrity and is widely adopted, especially in embedded systems. On one hand, the people want to reduce the computation overhead of cryptography algorithms; on the other hand, they also want to reduce the energy consumption associated with this computation overhead. In...

    Provided By Florida International University

  • White Papers // Oct 2010

    Replicating Financial Market Dynamics With A Simple Self-Organized Critical Lattice Model

    The authors explore a simple lattice field model intended to describe statistical properties of high frequency financial markets. The model is relevant in the cross-disciplinary area of econophysics. Its signature feature is the emergence of a self-organized critical state. This implies scale invariance of the model, without tuning parameters. Prominent...

    Provided By Florida International University

  • White Papers // Aug 2010

    Virtual Environments: Easy Modeling of Interdependent Virtual Appliances in the Cloud

    This paper presents the ideas for modeling groups of interdependent virtual machines in the cloud. The authors call these models virtual environments. This abstraction is built on top of virtual appliances and the services they provide. The authors discuss previous attempts in this domain and present the motivations for working...

    Provided By Florida International University

  • White Papers // Aug 2010

    Generalized ERSS Tree Model: Revisiting Working Sets

    Accurately characterizing the resource usage of an application at various levels in the memory hierarchy has been a long-standing research problem. Existing characterization studies are either motivated by specific allocation problems (e.g., memory page allocation) or they characterize a specific memory resource (e.g., L2 cache). The studies thus far have...

    Provided By Florida International University

  • White Papers // Jul 2010

    Automatic Malware Categorization Using Cluster Ensemble

    Malware categorization is an important problem in malware analysis and has attracted a lot of attention of computer security researchers and anti-malware industry recently. Today's malware samples are created at a rate of millions per day with the development of malware writing techniques. There is thus an urgent need of...

    Provided By Florida International University

  • White Papers // Jun 2010

    WattApp: An Application Aware Power Meter for Shared Data Centers

    The increasing heterogeneity between applications in emerging virtualized data centers like clouds introduce significant challenges in estimating the power drawn by the data center. In this paper, the authors present WattApp: an application-aware power meter for shared data centers that addresses this challenge. In order to deal with heterogeneous applications,...

    Provided By Florida International University

  • White Papers // Jun 2010

    Leveraging Cloud Computing in Geodatabase Management

    In this paper, the authors leverage Cloud computing technologies in scaling out data management in geographical databases. In particular, they tackle the issue of data indexing in parallel. First, spatial data is partitioned and indexed in a Hadoop MapReduce cluster. Two main partitioning strategies are evaluated: a linear-complexity method based...

    Provided By Florida International University

  • White Papers // May 2010

    Vulnerability Bounds and Leakage Resilience of Blinded Cryptography Under Timing Attacks

    The authors establish formal bounds for the number of min-entropy bits that can be extracted in a timing attack against a cryptosystem that is protected by blinding, the state-of-the art countermeasure against timing attacks. Compared with existing bounds, their bounds are both tighter and of greater operational significance, in that...

    Provided By Florida International University

  • White Papers // Jan 2011

    A Distributed Multimedia Data Management Over the Grid

    This paper proposes a distributed multimedia data management architecture, which can efficiently store and retrieve multimedia data across several nodes of a Grid environment. The main components of the proposed system comprises of a distributed multidimensional index structure, a distributed query manager handling content-based information retrievals and a load balancing...

    Provided By Florida International University

  • White Papers // Aug 2010

    Virtual Environments: Easy Modeling of Interdependent Virtual Appliances in the Cloud

    This paper presents the ideas for modeling groups of interdependent virtual machines in the cloud. The authors call these models virtual environments. This abstraction is built on top of virtual appliances and the services they provide. The authors discuss previous attempts in this domain and present the motivations for working...

    Provided By Florida International University

  • White Papers // May 2009

    Web Services Reliability Patterns

    Due to the widespread use of web services by enterprises, the need to ensure their reliability has become crucial. There are several standards that intend to govern how web services are designed and implemented, including protocols to which they must adhere. These standards include the WS-Reliability and WS-Reliable Messaging standards...

    Provided By Florida International University

  • White Papers // Mar 2009

    Real-Time Security Exercises on a Realistic Interdomain Routing Experiment Platform

    The authors use a realistic interdomain routing experiment platform to conduct real-time attack and defense exercises for training purposes. The interdomain routing experiment platform integrates open-source router software, real-time network simulation, and light-weight machine virtualization technologies, and is capable of supporting realistic large-scale routing experiments. The network model used consists...

    Provided By Florida International University

  • White Papers // Jan 2009

    BORG: Block-reORGanization for Self-Optimizing Storage Systems

    This paper presents the design, implementation, and evaluation of BORG, a self-optimizing storage system that performs automatic block reorganization based on the observed I/O workload. BORG is motivated by three characteristics of I/O workloads: non-uniform access frequency distribution, temporal locality, and partial determinism in non-sequential accesses. To achieve its objective,...

    Provided By Florida International University

  • White Papers // Dec 2010

    Cost Effective Storage Using Extent Based Dynamic Tiering

    Multi-tier systems that combine SSDs with SAS/FC and/or SATA disks mitigate the capital cost burden of SSDs, while benefiting from their superior I/O performance per unit cost and low power. Though commercial SSD-based multi-tier solutions are available, configuring such a system with the optimal number of devices per tier to...

    Provided By Florida International University

  • White Papers // Jan 2010

    I/O Deduplication: Utilizing Content Similarity to Improve I/O Performance

    Duplication of data in storage systems is becoming increasingly common. The authors introduce I/O Deduplication, a storage optimization that utilizes content similarity for improving I/O performance by eliminating I/O operations and reducing the mechanical delays during I/O operations. I/O Deduplication consists of three main techniques: content-based caching, dynamic replica retrieval,...

    Provided By Florida International University

  • White Papers // Jun 2011

    Scalable Link-Based Personalization for Ranking in Entity-Relationship Graphs

    Authority flow techniques like PageRank and ObjectRank can provide personalized ranking of typed entity-relationship graphs. There are two main ways to personalize authority flow ranking: Node-based personalization, where authority originates from a set of user-specific nodes; Edge-based personalization, where the importance of different edge types is user-specific. The authors propose...

    Provided By Florida International University

  • White Papers // Oct 2010

    Replicating Financial Market Dynamics With A Simple Self-Organized Critical Lattice Model

    The authors explore a simple lattice field model intended to describe statistical properties of high frequency financial markets. The model is relevant in the cross-disciplinary area of econophysics. Its signature feature is the emergence of a self-organized critical state. This implies scale invariance of the model, without tuning parameters. Prominent...

    Provided By Florida International University

  • White Papers // Aug 2010

    Generalized ERSS Tree Model: Revisiting Working Sets

    Accurately characterizing the resource usage of an application at various levels in the memory hierarchy has been a long-standing research problem. Existing characterization studies are either motivated by specific allocation problems (e.g., memory page allocation) or they characterize a specific memory resource (e.g., L2 cache). The studies thus far have...

    Provided By Florida International University

  • White Papers // Jan 2011

    Network Intrusion Detection Design Using Feature Selection of Soft Computing Paradigms

    The network traffic data provided for the design of intrusion detection always are large with ineffective information and enclose limited and ambiguous information about users' activities. The authors study the problems and propose a two phases approach in the intrusion detection design. In the first phase, they develop a correlation-based...

    Provided By Florida International University

  • White Papers // Sep 2009

    Energy Proportionality for Storage: Impact and Feasibility

    This paper highlights the growing importance of storage energy consumption in a typical data center, and asserts that storage energy research should drive towards a vision of energy proportionality for achieving significant energy savings. The authors' analysis of real-world enterprise workloads shows a potential energy reduction of 40-75% using an...

    Provided By Florida International University

  • White Papers // May 2010

    Vulnerability Bounds and Leakage Resilience of Blinded Cryptography Under Timing Attacks

    The authors establish formal bounds for the number of min-entropy bits that can be extracted in a timing attack against a cryptosystem that is protected by blinding, the state-of-the art countermeasure against timing attacks. Compared with existing bounds, their bounds are both tighter and of greater operational significance, in that...

    Provided By Florida International University

  • White Papers // Jun 2011

    Challenges and Directions in Formalizing the Semantics of Modeling Languages

    Developing software from models is a growing practice and there exist many model-based tools (e.g., editors, interpreters, debuggers, and simulators) for supporting model-driven engineering. Even though these tools facilitate the automation of software engineering tasks and activities, such tools are typically engineered manually. However, many of these tools have a...

    Provided By Florida International University

  • White Papers // Mar 2010

    On Enabling Real-Time Large-Scale Network Simulation Into the GENI Environment: The PrimoGENI Approach

    In recent years, many research efforts have focused on building experimentation platforms where structural changes to future Internet can be implemented and tested. GENI, instantiated by its prototype implementations, e.g. ProtoGENI, is a notable example of such systems. In this paper, the authors present the PrimoGENI approach; which aims to...

    Provided By Florida International University

  • White Papers // May 2012

    Dynamic Block-Level Cache Management for Cloud Computing Systems

    Block-level distributed storage systems (e.g., SAN, iSCSI) are commonly used in the emerging cloud computing systems to provide Virtual Machine (VM) storage. They allow fast VM migration across different hosts and improved VM availability leveraging typical fault-tolerance measures (e.g., RAID) available in such storage systems. However, as the size of...

    Provided By Florida International University

  • White Papers // Sep 2011

    Using Lightweight Virtual Machines to Run High Performance Computing Applications: The Case of the Weather Research and Forecasting Model

    There are many scientific applications that have high performance computing demands. Such demands are traditionally supported by cluster- or Grid-based systems. Cloud computing, which has experienced a tremendous growth, emerged as an approach to provide on-demand access to computing resources. The cloud computing paradigm offers a number of advantages over...

    Provided By Florida International University

  • White Papers // May 2011

    Truly Non-Blocking Writes

    Writing data within user or operating system memory often encounters the classic read-before-write problem whereby the page written to must first be read from the backing store, effectively blocking the writing process before modifications are made. Unfortunately, the large gap between memory and storage access performance adversely affects workloads that...

    Provided By Florida International University

  • White Papers // Jun 2011

    Towards Scalable Application Checkpointing With Parallel File System Delegation

    The ever-increasing scale of modern High-Performance Computing (HPC) systems presents a variety of challenges to the Parallel File System (PFS) based storage in these systems. The scalability of application checkpointing is a particularly important challenge because it is critical to the reliability of computing and it often dominates the I/Os...

    Provided By Florida International University

  • White Papers // May 2011

    Performance Modeling of Virtual Machine Live Migration

    System virtualization is becoming pervasive and it is enabling important new computing diagrams such as cloud computing. Live Virtual Machine (VM) migration is a unique capability of system virtualization which allows applications to be transparently moved across physical machines with a consistent state captured by their VMs. Although live VM...

    Provided By Florida International University

  • White Papers // Nov 2010

    Cooperative Virtual Machine Scheduling on Multi-Core Multi-Threading Systems - A Feasibility Study

    Virtual Machines (VMs) and Multi-core Multi-threading Micro-Processors (MMMP) are two emerging technologies in software and hardware, respectively, and they are expected to become pervasive on computer systems in the near future. However, the nature of resource sharing on an MMMP introduces contention among VMs which are scheduled onto the cores...

    Provided By Florida International University

  • White Papers // Feb 2012

    Power and Energy Analysis on Intel Single-Chip Cloud Computer System

    Improving the computing performance of the multicore and many-core systems is one of the primary interests to computer architecture researchers currently. Message Passing Interface (MPI) and Multi-core techniques are converged to solve this problem. With performance enhancement, the power and energy consumption increase correspondingly. The Single-Chip Cloud Computer (SCC) is...

    Provided By Florida International University

  • White Papers // Jun 2011

    PCOUNT: A Power Aware Fetch Policy in Simultaneous Multithreading Processors

    The Simultaneous Multi-Threading (SMT) architecture improves the resource efficiency via scheduling and executing concurrent threads in the same core. Moreover, fetch policies are proposed to assign priorities in the fetch stage to manage the shared resources. However, power consumption study is omitted in most fetch policies. On the other hand,...

    Provided By Florida International University

  • White Papers // May 2013

    Online Resource Management for Data Center with Energy Capping

    The past few years have been witnessing a surging demand for cloud computing services, resulting in a huge carbon footprint and making energy cost one of the top operational costs of data centers. Meanwhile, as sustainable computing has become increasingly important, data centers are constantly pressured to cap the long-term...

    Provided By Florida International University

  • White Papers // May 2013

    Two-Level Throughput and Latency IO Control for Parallel File Systems

    Existing parallel file systems are unable to provide both throughput and response time guarantees for concurrent parallel applications. This limitation prevents different, competing applications from getting their desired performance as high-Performance Computing (HPC) systems continue to scale up and be used in a shared environment. This paper presents a new...

    Provided By Florida International University

  • White Papers // Nov 2009

    Application Performance Modeling in a Virtualized Environment

    Performance models provide the ability to predict application performance for a given set of hardware resources and are used for capacity planning and resource management. Traditional performance models assume the availability of dedicated hardware for the application. With growing application deployment on virtualized hardware, hardware resources are increasingly shared across...

    Provided By Florida International University

  • White Papers // Jan 2010

    STORM: An Approach to Database Storage Management in Data Center Environments

    Database storage management at data centers is a manual, time-consuming, and error-prone task. Such management involves regular movement of database objects across physical storage devices in a Storage Area Network (SAN) so that storage utilization is maximized. The authors present STORM, an automated approach that guides this task by combining...

    Provided By Florida International University

  • White Papers // Jul 2009

    Challenges and Solutions for Handoff Issues in 4G Wireless Systems an Overview

    As the wireless communications technologies evolve dramatically, the recent research focus has shifted to the development of Furth-Generation (4G) mobile systems. Instead of developing a new uniform standard for all wireless communications systems, 4G communication networks strive to seamlessly integrate various existing wireless communication technologies. One of the major challenges...

    Provided By Florida International University

  • White Papers // Nov 2009

    Industrial Evidence On Partisan Trade Policy: Tariff Vs. Antidumping

    The objective of this paper is to contribute to the literature by analyzing the effect of partisanship on three issues, the tariff level, the use of antidumping relative to tariffs and how these effects work at the industry level. The tariff argument is an extension of DM (2005) to industry...

    Provided By Florida International University

  • White Papers // Nov 2012

    Efficient VM Placement With Multiple Deterministic and Stochastic Resources in Data Centers

    Virtual Machines (VMs) may significantly improve the efficiency of data center infrastructure by sharing resources of physical servers. This benefit relies on an efficient VM placement scheme to minimize the number of required servers. Existing VM placement algorithms usually assume that VMs' demands for resources are deterministic and stable. However,...

    Provided By Florida International University

  • White Papers // Nov 2012

    Depth-First Worst-Fit Search Based Multipath Routing for Data Center Networks

    Modern Data Center Networks (DCNs) often use multi-rooted topologies, which offer multipath capability, for increased bandwidth and fault tolerance. However, traditional routing algorithms for the Internet have no or limited support for multipath routing, and cannot fully utilize available bandwidth in such DCNs. In this paper, the authors study the...

    Provided By Florida International University

  • White Papers // Nov 2012

    The Design of a Community Science Cloud: The Open Science Data Cloud Perspective

    In this paper, the authors describe the design, and implementation of the Open Science Data Cloud, or OSDC. The goal of the OSDC is to provide petabyte-scale data cloud infrastructure and related services for scientists working with large quantities of data. Currently, the OSDC consists of more than 2000 cores...

    Provided By Florida International University

  • White Papers // Oct 2009

    Packet-Mode Asynchronous Scheduling Algorithm for Partially Buffered Crossbar Switches

    Traditional crossbar switches use centralized scheduling algorithms with high time complexity. In contrast, buffered crossbar switches are capable of distributed scheduling due to crosspoint buffers, which decouple the dependency between inputs and outputs. However, crosspoint buffers are expensive on-chip memories. To reduce the hardware cost of buffered crossbar switches and...

    Provided By Florida International University

  • White Papers // May 2011

    A Metamodel for Distributed Ensembles of Virtual Appliances

    The authors present their work on modeling Distributed Ensembles of Virtual Appliances (DEVAs) on Infrastructure as a Service (IaaS) clouds. Designing solutions on IaaS providers require a good understanding of the underlying details such as the software installation or the network configuration. They propose the use of DEVAs, a modeling...

    Provided By Florida International University

  • White Papers // Jun 2010

    Leveraging Cloud Computing in Geodatabase Management

    In this paper, the authors leverage Cloud computing technologies in scaling out data management in geographical databases. In particular, they tackle the issue of data indexing in parallel. First, spatial data is partitioned and indexed in a Hadoop MapReduce cluster. Two main partitioning strategies are evaluated: a linear-complexity method based...

    Provided By Florida International University

  • White Papers // Apr 2010

    Efficient and Scalable Method for Processing Top-k Spatial Boolean Queries

    In this paper, the authors present a novel method to efficiently process top-k spatial queries with conjunctive Boolean constraints on textual content. Their method combines an R-tree with an inverted index by the inclusion of spatial references in posting lists. The result is a diskresident, dual-index data structure that is...

    Provided By Florida International University

  • White Papers // Jun 2009

    Experiences on Processing Spatial Data with MapReduce

    The amount of information in spatial databases is growing as more data is made available. Spatial databases mainly store two types of data: raster data (satellite/aerial digital images), and vector data (points, lines, polygons). The complexity and nature of spatial databases makes them ideal for applying parallel processing. MapReduce is...

    Provided By Florida International University

  • White Papers // May 2011

    Mining Actionable Knowledge for Domain-Driven and Customer-Centric Decision Support

    It has been increasingly critical for businesses to become more customer-centric and more responsive for customer needs. The "Voice Of Customer" (VOC in short) is a general term to describe the stated and unstated customer needs that can be captured through various customer touch-points: sales meetings, surveys, interviews, focus groups,...

    Provided By Florida International University

  • White Papers // Aug 2012

    Self-adaptive Cloud Capacity Planning

    The popularity of cloud service spurs the increasing demands of cloud resources to the cloud service providers. Along with the new business opportunities, the pay-as-you-go model drastically changes the usage pattern and brings technology challenges to effective capacity planning. In this paper, the authors propose a new method for cloud...

    Provided By Florida International University

  • White Papers // Jul 2012

    Cloud Application Resource Mapping and Scaling Based on Monitoring of QoS Constraints

    Infrastructure as a Service (IaaS) clouds promise unlimited raw computing resources on-demand. However, the performance and granularity of these resources can vary widely between providers. Cloud computing users, such as Web developers, can benefit from a service which automatically maps performance non-functional requirements to these resources. The authors propose a...

    Provided By Florida International University