CS780-3 Lecture Notes In Courtesy of Mengjun Xie

About NEESgrid will link earthquake researchers across the U.S. with leading- edge computing resources and research equipment, allowing collaborative teams (including remote participants) to plan, perform, and publish their experiments. NEESgrid, the systems integration component of the NEES project, uses the newest and fastest communications technologies to tie the NEES network together.NEES project

NEES Resources Field Equipment Laboratory Equipment Remote Users Remote Users: ( K-12 Faculty and Students) Instrumented Structures and Sites Leading Edge Computation Curated Data Repository Laboratory Equipment Global Connections (FY 2005 – FY 2014) ( Faculty, Students, Practitioners) Simulation Tools Repository

NEES Network for Earthquake Engineering Simulation NEES is a distributed array of experimental sites, grid-based data repositories, tool archives, and computational resources, all seamlessly linked (hopefully!) NEES has four components : The consortium, which will run NEES after 2004 The consortium development (CD) builds the consortium The experimental sites, which provide data and content The systems integration (SI) effort, termed NEESgrid Network drivers include telepresence, curated repositories, scalable HPC, experimental-numerical coupling, short- and long-term QoS issues.

NEES Network Stakeholders Experimental Facilities Shake tables, centrifuges, wave tanks, field sites Resource providers Computers, software, storage, networks End users Researchers, practicing engineers, students, … Operational facilities NCSA/NEESgrid  NEES Consortium in 2004

NEESgrid? A coordinated and secure architecture/environment A modular and extensible environment with a customizable user interface Provides common tools that allow leveraging resources and experiences Goal: the Cyber Infrastructure that will facilitate this next generation of experimentation/simulation in earthquake engineering “A Distributed Virtual Laboratory for Advanced Earthquake Experimentation and Simulation.” -- B. F. Spencer, Jr. (PI & Project Director)

NEESgrid? Through the NEESgrid, researchers can: perform tele-observation and tele-operation of experiments;tele-observation and tele-operation publish to and make use of a curated data repository using standardized markup; access computational resources and open-source analytical tools; access collaborative tools for experiment planning, execution, analysis, and publication.collaborative tools

Telepresence Telepresence means the capability to participate remotely in experimental trials. There are two main categories: Tele-observation: the ability to observe the experiment and capture trial data from a remote site Tele-operation: the ability to interact with the experiment equipment from a remote site.

Collaboration and Visualization The tasks of Collaboration and Visualization project include: prototype a Grid-based collaborative environment; integrate support for visualization tools into the collaborative environment; adapt the Comprehensive Collaborative Framework (CHEF) for collaborative visualization applications and services; and produce appropriate final documentation of the collaboration and visualization components of NEESgrid. CHEF is a flexible web-based environment for remote collaboration.

Main Components Tele-Control Services and APIs Tele-Observation and Data Visualization E-Notebook Streaming data services DAQ and related services Data and Metadata Services Remote Collaboration and Visualization tools and services Core Grid Services, deployment efforts, packaging Simulation Component

Progress The task of designing and creating this infrastructure has been awarded to the NCSA at UIUC. The components of the NEESgrid system will be completed by September, 2004, when management and operation of the NEES system will be turned over to a consortium of earthquake engineer researchers and practitioners.consortium

Partner National Center for Supercomputing Applications Randy Butler —Deployment, Operations, and Support Mark Marikos —Management Joe Futrelle —Data and Metadata University of Illinois at Urbana-Champaign Bill Spencer —Management Dan Abrams —Community Building Argonne National Laboratory Nestor J. Zaluzec —Telepresence Ian Foster —System Configuration Information Sciences Institute Carl Kesselman —System Configuration University of Southern California Jean-Pierre Bardet —Integrated Demonstrations School of Information, University of Michigan Joseph Hardin —Collaboration Tom Finholt —User Requirements

System Architecture

Pre-Experiment Collaboration The remote user (RU) logs into the equipment site's NEESpop. After authentication, RU can access all granted NEESgrid resources through SSN. RU can, via CHEF, read and participate in discussions related to the equipment site, see a calendar, share documents, make announcements, and correspond with other researchers to plan an experiment. Through NEESpop, RU can also access and edit electronic lab notebooks hosted on the TPM.

Monitoring Network Status RU contacts CHEF and requests a summary of the system's health and status. The CHEF server contacts a central NCSA server that monitors NEESgrid. Standard grid services (GIIS at NCSA, GRIS for other services) are continually collecting information on system connectivity and the availability of grid services such as GridFTP. The grid information is summarized and sent to RU's browser.

Setting Up the Experiment Using a CHEF teamlet, the equipment specialist at the equipment site enters the metadata describing the configuration of the experimental setup. The metadata repository on the NEESpop holds this configuration information, making it available for browsing by RUs. The NEESpop metadata repository also sends configuration information to the DAQ system(s).

Subscribing to Trial Data Streams RU contacts CHEF to browse available NEESgrid resources and discover what data will be available for streaming. A CHEF teamlet uses GIIS and GRIS to query and report features and availability of NEESgrid resources, as well as details of NEES equipment and available data streams. RU contacts the NEESpop and requests a subscription to several data streams. The NEESpop negotiates with the NSDS to broadcast the selected data streams.

Streaming Near-Real-Time Data Instrument information is sent in real time from the DAQ system through a NSDS daemon to the NSDS. Data is streamed by NSDS to the RU. An applet in the RU's browser displays the results. Video services are managed through the TPM server and streamed to the RU via a separate video streaming server.

Ending the Trial The DAQ equipment moves the trial data to a data repository hosted on the NEESpop. The data is associated with appropriate metadata information, such as experiment ID, channel ID, and sensor type.

Analyzing the Trial Data The trial data can now be browsed via CHEF. The trial data and metadata can be downloaded to the RU via GridFTP service. The RU can then use either standard software, such as MatLAB, or their own customized software to analyze the trial data.

Login Authentication

Chat CHEF Environment

E-Notebook CHEF Environment

Data Viewer CHEF Environment

NTCP Data CHEF Environment

NEESgrid Central Repository CHEF Environment

Summary Characterizations of NEES project: A very specific application A wide range of resource sharing:  Raw data, experimental results, equipment, computation/software tools Centralized controls, monitoring, and management. Does this follow the three principles of Grid? Not really: it is subject to central control, not open source software based. But it is a successful model of grid applications. A Global and general grid is an ideal model, and may become realistic after many successful NEES projects.