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SLURM: Simple Linux Utility for Resource Management

Description: Simple Linux Utility for Resource Management (SLURM) is an open source, fault-tolerant, and highly scalable cluster management and job scheduling system for Linux clusters of thousands of nodes. Components include machine status, partition management, job management, scheduling and stream copy modules. The design also includes a scalable, general-purpose communication infrastructure. This paper presents a overview of the SLURM architecture and functionality.
Date: July 8, 2002
Creator: Jette, Morris A.; Dunlap, Chris; Garlick, Jim & Grondona, Mark
Item Type: Refine your search to only Text
Partner: UNT Libraries Government Documents Department
open access

Connecting to the Internet Securely: Windows 2000 CIAC-2321

Description: As the threat to computer systems increases with the increasing use of computers as a tool in daily business activities, the need to securely configure those systems becomes more important. There are far too many intruders with access to the Internet and the skills and time to spend compromising systems to not spend the time necessary to securely configure a system. Hand-in-hand with the increased need for security are an increased number of items that need to be securely configured. Windows 20… more
Date: March 12, 2002
Creator: Orvis, W; Call, K & Dias, J
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Tiger Teams Technical Assistance: Reliable, Universal Open Architecture for Card Access to Dispense Alternative Fuels

Description: Report discusses the dilemma of incorporating consistent, convenient, universal card access (or ''pay-at-the-pump'') systems into alternative fueling stations across the country. The state of California continues to be in the forefront of implementing alternative fuels for transportation applications. Aggressive efforts to deploy alternative fuel vehicles (AFVs) in California have highlighted the need to provide adequate fueling stations and develop appropriate, user-friendly means to purchase … more
Date: March 1, 2002
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Reconfigurable computing in space: from current technology to reconfigurable systems-on-a-chip.

Description: The performance, in-system reprogrammability, flexibility, and reduced costs of SRAM-based FPGAs make them very interesting for high-speed, on-orbit data processing, but, because the current generation of radiation-tolerant SRAM-based FPGAs are derived directly from COTS versions of the chips, several issues must be dealt with for space, including SEU sensitivities, power consumption, thermal problems, and support logic. This paper will discuss Los Alamos National Laboratory's approach to using… more
Date: January 1, 2002
Creator: Graham, R. C. (Robert C.); Caffrey, M. P. (Michael Paul); Johnson, D. E. (Darrel Eric) & Wirthlin, M. J. (Michael J.)
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Scalable resource management in high performance computers.

Description: Clusters of workstations have emerged as an important platform for building cost-effective, scalable and highly-available computers. Although many hardware solutions are available today, the largest challenge in making large-scale clusters usable lies in the system software. In this paper we present STORM, a resource management tool designed to provide scalability, low overhead and the flexibility necessary to efficiently support and analyze a wide range of job scheduling algorithms. STORM achi… more
Date: January 1, 2002
Creator: Frachtenberg, E. (Eitan); Petrini, F. (Fabrizio); Fernandez Peinador, J. (Juan) & Coll, S. (Salvador)
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

New polymorphous computing fabric.

Description: This paper introduces a new polymorphous computing Fabric well suited to DSP and Image Processing and describes its implementation on a Configurable System on a Chip (CSOC). The architecture is highly parameterized and enables customization of the synthesized Fabric to achieve high performance for a specific class of application. For this reason it can be considered to be a generic model for hardware accelerator synthesis from a high level specification. Another important innovation is the Fabr… more
Date: January 1, 2002
Creator: Wolinski, C. (Christophe); Gokhale, M. (Maya) & McCabe, K. P. (Kevin P.)
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Intelligent Control of Modular Robotic Welding Cell

Description: Although robotic machines are routinely used for welding, such machines do not normally incorporate intelligent capabilities. We are studying the general problem of formulating usable levels of intelligence into welding machines. From our perspective, an intelligent machine should: incorporate knowledge of the welding process, know if the process is operating correctly, know if the weld it is making is good or bad, have the ability to learn from its experience to perform welds, and be able to o… more
Date: April 1, 2002
Creator: Smartt, Herschel Bernard; Kenney, Kevin Louis & Tolle, Charles Robert
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Cactus and Visapult: An ultra-high performance grid-distributedvisualization architecture using connectionless protocols

Description: This past decade has seen rapid growth in the size,resolution, and complexity of Grand Challenge simulation codes. Thistrend is accompanied by a trend towards multinational, multidisciplinaryteams who carry out this research in distributed teams, and thecorresponding growth of Grid infrastructure to support these widelydistributed Virtual Organizations. As the number and diversity ofdistributed teams grow, the need for visualization tools to analyze anddisplay multi-terabyte, remote data become… more
Date: August 31, 2002
Creator: Bethel, E. Wes & Shalf, John
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Plant cell wall architecture. Final technical report for DOE award no. DE-FG02-97ER20258

Description: The goals of the project were to investigate the roles of caffeoyl coenzyme A O-methyltransferase (CCoAOMT), an enzyme involved in the phenylpropanoid biosynthetic pathway, in the biosynthesis of lignin. The investigators proposed to analyze the expression pattern of CCoAOMT in plants, and examine how reduction in the expression of CCoAOMT would affect lignin content and composition. The goals were fulfilled, and significant findings on lignin biochemistry were made. Two papers were published, … more
Date: August 6, 2002
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

The control architecture of the D0 experiment

Description: From a controls viewpoint, contemporary high energy physics collider detectors are comparable in complexity to small to medium size accelerators: however, their controls requirements often differ significantly. D0, one of two collider experiments at Fermilab, has recently started a second, extended running period that will continue for the next five years. EPICS [1], an integrated set of software building blocks for implementing a distributed control system, has been adapted to satisfy the slow… more
Date: November 21, 2002
Creator: al., J. Fredrick Bartlett et
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

The Integration of Engineering and Architecture: A Perspective on Natural Ventilation for the New San Francisco Federal Building

Description: A description of the in-progress design of a new Federal Office Building for San Francisco is used to illustrate a number of issues arising in the design of large, naturally ventilated office buildings. These issues include the need for an integrated approach to design involving the architects, mechanical and structural engineers, lighting designers and specialist simulation modelers. In particular, the use of natural ventilation, and the avoidance of air-conditioning, depends on the high degre… more
Date: May 31, 2002
Creator: McConahey, Erin; Haves, Philip & Christ, Tim
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Front end readout electronics for the CMS hadron calorimeter

Description: The front-end electronics for the CMS Hadron Calorimeter provides digitized data at the beam interaction rate of 40 MHz. Analog signals provided by hybrid photodiodes (HPDs) or photomultiplier tubes (PMTs) are digitized and the data is sent off board through serialized fiber optic links running at 1600 Mbps. In order to maximize the input signal, the front-end electronics are housed on the detector in close proximity to the scintillating fibers or phototubes. To fit the electronics into availab… more
Date: November 20, 2002
Creator: al., Terri M. Shaw et
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

The architecture of the BTeV pixel readout chip

Description: The most striking feature of BTeV, a dedicated b physics experiment which is expected to begin running in 2008 in the new CZero interaction region of the Fermilab Tevatron, is that the experiment will use data from a pixel vertex detector to reconstruct tracks and vertices for every beam crossing. The lowest level trigger will be an impact parameter trigger designed to identify events containing reconstructable decays of charm and bottom particles[1]. An R&D program to develop a pixel reado… more
Date: December 3, 2002
Creator: Christian, David C
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

LITERATURE SEARCH FOR METHODS FOR HAZARD ANALYSES OF AIR CARRIER OPERATIONS.

Description: Representatives of the Federal Aviation Administration (FAA) and several air carriers under Title 14 of the Code of Federal Regulations (CFR) Part 121 developed a system-engineering model of the functions of air-carrier operations. Their analyses form the foundation or basic architecture upon which other task areas are based: hazard analyses, performance measures, and risk indicator design. To carry out these other tasks, models may need to be developed using the basic architecture of the Air C… more
Date: July 1, 2002
Creator: MARTINEZ - GURIDI,G. & SAMANTA,P.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Scientific kernels on VIRAM and imagine media processors

Description: Many high performance applications run well below the peak arithmetic performance of the underlying machine, with inefficiencies often attributed to a lack of memory bandwidth. In this work we examine two emerging media processors designed to address the well-known gap between processor and memory performance, in the context of scientific computing. The VIRAM architecture uses novel PIM technology to combine embedded DRAM with a vector co-processor for exploiting its large bandwidth potential. … more
Date: October 10, 2002
Creator: Narayanan, Manikamdan; Oliker, Leonid; Janin, Adam; Husbands,Parry & Li, Xiaoye S.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

A new scheduling algorithm for parallel sparse LU factorization with static pivoting

Description: In this paper we present a static scheduling algorithm for parallel sparse LU factorization with static pivoting. The algorithm is divided into mapping and scheduling phases, using the symmetric pruned graphs of L' and U to represent dependencies. The scheduling algorithm is designed for driving the parallel execution of the factorization on a distributed-memory architecture. Experimental results and comparisons with SuperLU{_}DIST are reported after applying this algorithm on real world applic… more
Date: August 20, 2002
Creator: Grigori, Laura & Li, Xiaoye S.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Local Discovery of System Architecture - Application Parameter Sensitivity: An Empirical Technique for Adaptive Grid Applications

Description: This study presents a technique that can significantly improve the performance of a distributed application by allowing the application to locally adapt to architectural characteristics of distinct resources in a distributed system. Application performance is sensitive to system architecture-application parameter pairings. In a distributed or Grid enabled application, a single parameter configuration for the whole application will not always be optimal for every participating resource. In parti… more
Date: May 8, 2002
Creator: Corey, I. R.; Johnson, J. R. & Vetter, J. S.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Chromium: A Stress-Processing Framework for Interactive Rendering on Clusters

Description: We describe Chromium, a system for manipulating streams of graphics API commands on clusters of workstations. Chromium's stream filters can be arranged to create sort-first and sort-last parallel graphics architectures that, in many cases, support the same applications while using only commodity graphics accelerators. In addition, these stream filters can be extended programmatically, allowing the user to customize the stream transformations performed by nodes in a cluster. Because our stream p… more
Date: January 11, 2002
Creator: Humphreys, G,; Houston, M.; Ng, Y.-R.; Frank, R.; Ahern, S.; Kirchner, P.D. et al.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

NERI Project 99-119. A New Paradigm for Automatic Development of Highly Reliable Control Architectures for Nuclear Power Plants. Phase-2 Progress Report

Description: This report describes the tasks performed and the progress made during Phase 2 of the DOE-NERI project number 99-119 entitled Automatic Development of Highly Reliable Control Architecture for Future Nuclear Power Plants. This project is a collaboration effort between the Oak Ridge National Laboratory (ORNL), The University of Tennessee, Knoxville (UTK) and the North Carolina State University (NCSU). ORNL is the lead organization and is responsible for the coordination and integration of all wor… more
Date: January 15, 2002
Creator: March-Leuba, JA
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Y-12 Integrated Materials Management System

Description: The Integrated Materials Management System, when fully implemented, will provide the Y-12 National Security Complex with advanced inventory information and analysis capabilities and enable effective assessment, forecasting and management of nuclear materials, critical non-nuclear materials, and certified supplies. These capabilities will facilitate future Y-12 stockpile management work, enhance interfaces to existing National Nuclear Security Administration (NNSA) corporate-level information sy… more
Date: June 3, 2002
Creator: Alspaugh, D. H. & Hickerson, T. W.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Enhanced teleoperation exhibiting tele-autonomy and tele-collaboration.

Description: This paper presents enhanced remote manipulation of tools for D&D tasks by extending teleoperation with teleautonomy and tele-collaboration. This work builds on a reactive, agent-based control architecture, which is well suited to unstructured and unpredictable environments, and cobot control technology, which implements a virtual fixture that can be used to guide the application of tools with passive force-feedback control. Developed methodologies are tested using simulation, and then plan… more
Date: May 17, 2002
Creator: Park, Y. S.; Ewing, T. F.; Yule, T. J.; Colgate, E. & Peshkin, M.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Implementation of MP{_}Lite for the VI Architecture

Description: MP{_}Lite is a light weight message-passing library designed to deliver the maximum performance to applications in a portable and user friendly manner. The Virtual Interface (VI) architecture is a user-level communication protocol that bypasses the operating system to provide much better performance than traditional network architectures. By combining the high efficiency of MP{_}Lite and high performance of the VI architecture, they are able to implement a high performance message-passing libra… more
Date: December 31, 2002
Creator: Chen, Weiyi
Item Type: Refine your search to only Thesis or Dissertation
Partner: UNT Libraries Government Documents Department
open access

The NSTX Trouble Reporting System

Description: An online Trouble Reporting System (TRS) has been introduced at the National Spherical Torus Experiment (NSTX). The TRS is used by NSTX operators to report problems that affect NSTX operations. The purpose of the TRS is to enhance NSTX reliability and maintainability by identifying components, occurrences, and trends that contribute to machine downtime. All NSTX personnel have access to the TRS. The user interface is via a web browser, such as Netscape or Internet Explorer. This web-based featu… more
Date: January 28, 2002
Creator: Sengupta, S. & Oliaro, G.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

STOMP: A Software Architecture for the Design and Simulation UAV-Based Sensor Networks

Description: This paper presents the Simulation, Tactical Operations and Mission Planning (STOMP) software architecture and framework for simulating, controlling and communicating with unmanned air vehicles (UAVs) servicing large distributed sensor networks. STOMP provides hardware-in-the-loop capability enabling real UAVs and sensors to feedback state information, route data and receive command and control requests while interacting with other real or virtual objects thereby enhancing support for simulatio… more
Date: October 28, 2002
Creator: Jones, E. D.; Roberts, R. S. & Hsia, T. C. S.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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