Testbed

About: Testbed is a research topic. Over the lifetime, 10858 publications have been published within this topic receiving 147147 citations. The topic is also known as: test bed.

Workflow Support for Complex Grid Applications: Integrated and Portal Solutions

Abstract: In this paper we present a workflow solution to support graphically the design, execution, monitoring, and performance visualisation of complex grid applications. The described workflow concept can provide interoperability among different types of legacy applications on heterogeneous computational platforms, such as Condor or Globus based grids. The major design and implementation issues concerning the integration of Condor tools, Mercury grid monitoring infrastructure, PROVE performance visualisation tool, and the new workflow layer of P-GRADE are discussed in two scenarios. The integrated version of P-GRADE represents the thick client concept, while the portal version needs only a thin client and can be accessed by a standard web browser. To illustrate the application of our approach in the grid, an ultra-short range weather prediction system is presented that can be executed in a grid testbed and visualised not only at workflow level but at the level of individual parallel jobs, too.

EmPOWER: A Testbed for Network Function Virtualization Research and Experimentation

Abstract: Software Defined Networking (SDN) and Network Function Virtualization (NFV) are making their way into the research agenda of all the major players in the networking domain Parallely, testbeds and experimental facilities are widely regarded as the fundamental step-stone to future "clean slate" networking However, designing and building experimental facilities can hardly be considered a trivial step for either researchers and practitioners Scale, flexibility, and ease of use are just some of the challenges faced by a testbed designer These considerations are at the base of efforts such as GENI in USA, AKARI in Japan, FEDERICA, NOVI and OFELIA in Europe which provide federated and open facilities for the Future Internet research agenda Albeit the importance of such facilities is unquestioned, today there is still a dearth of testbed exploiting SDN and NFV concepts in the wireless networking domain In this paper we present EmPOWER an experimental testbed which aims at filling this gap by offering an open platform on top of which novel concepts can be tested at scale The EmPOWER testbed is composed by 30 nodes and is currently used by both undergraduate and graduate students at the University of Trento and by the research staff at CREATE-NET

Using the GridSim toolkit for enabling Grid computing education

Abstract: Numerous research groups in universities, research labs, and industries around the world are now working on Computational Grids or simply Grids that enable aggregation of distributed resources for solving large-scale data intensive problems in science, engineering, and commerce. Several institutions and universities have started research and teaching programs on Grid computing as part of their parallel and distributed computing curriculum. The researchers and students interested in resource management and scheduling on Grid need a testbed infrastructure for implementing, testing, and evaluating their ideas. Students often do not have access to the Grid testbed and even if they have access, the testbed size is often small, which limits their ability to test ideas for scalable performance and large-scale evaluation. It is even harder to explore large-scale application and resource scenarios involving multiple users in a repeatable and comparable manner due to dynamic nature of Grid environments. To address these limitations, we propose the use of simulation techniques for performance evaluation and advocate the use of a Java-based discrete event simulation toolkit, called GridSim. The toolkit provides facilities for modeling and simulating Grid resources (both time and spaceshared high performance computers) and network connectivity with different capabilities and configurations. We have used GridSim toolkit to simulate Nimrod-G like Grid resource broker that supports deadline and budget constrained cost and time minimization scheduling algorithms.

SDDC: A Software Defined Datacenter Experimental Framework

Abstract: The rapid growth and the distributed sites of the datacenters increase the complexity of control and management processes. A new paradigm which is called Software Defined Systems (SDSys) comes as a solution to reduce the overhead of datacenters management by abstracting all the control functionalities from the hardware devices and setting it inside a software layer. These functionalities are responsible for organizing and controlling the main blocks of the datacenter; network, storage, compute and security. The Software Defined Datacenter (SDD) integrates the software defined concepts into all of these main blocks. Transferring these concepts into workable systems requires checking several performance aspects and testing its correctness before building real systems. In this paper we introduce a novel experimental framework (SDDC) to provide a novel virtualized testbed environment for SDD systems. This work builds on the Mininet simulator, where its core components, the host, the switch and the controller, are customized to build the proposed experimental simulation framework for SDD. This simulator lets the users develop and test their own SDD solutions, and at the same time gives the researchers an experimentation tool for benchmarking purposes. The developed simulator could also be used as an educational tool to train students and novice researchers.

Wireless Underground Sensor Networks

Abstract: ireless underground sensor networks (WUSNs) can enable many important applications such as intelligent agriculture, pipeline fault diagnosis, mine disaster rescue, concealed border patrol, and crude oil exploration. The key challenge to realize WUSNs is the wireless communication in underground environments. Most existing wireless communication systems utilize a dipole antenna to transmit and receive propagating electromagnetic (EM) waves, a method that does not work well in underground environments due to the high material absorption loss. The magnetic induction (MI) technique provides a promising alternative solution that could address the current problem in underground environments. Although MI-based underground communication has been intensively investigated theoretically, little effort has been made so far to develop a testbed for MI-based underground communication that can validate the theoretical results. In this article, a testbed of several MI-based communication systems is designed and implemented in an in-lab underground environment. The testbed realizes and tests not only the original MI mechanism utilizing a single coil but also recently developed techniques that use the MI waveguide and threedirectional (3D) MI coils. The experiments are conducted in an in-lab underground environment with reconfigurable environmental parameters, such as soil composition and water content. This article provides the principles and guidelines for developing the MI underground communication testbed, which is very complicated and time consuming due to the new communication mechanism and the new wireless transmission medium.