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Computer workstation speeds

Description: This report compares the performance of several computers. Some of the machines are discontinued, and some are anticipated, but most are currently installed at Sandia Laboratories. All the computers are personal workstations or departmental servers, except for comparison, one is a Cray C90 mainframe supercomputer (not owned by the Laboratories). A few of the computers have multiple processors, but parallelism is not tested. The time to run three programs is reported for every computer. Unlike many benchmarks, these are complete application programs. They were written and are used at Sandia Laboratories. Also SPECmarks are reported for many computers. These are industry standard performance ratings. They are in general agreement with the speeds of running the Sandia programs. This report concludes with some background material and notes about specific manufacturers.
Date: June 1, 1996
Creator: Grcar, J.F.
Partner: UNT Libraries Government Documents Department

Validation of NCSSHP for highly enriched uranium systems containing beryllium

Description: This document describes the validation of KENO V.a using the 27-group ENDF/B-IV cross section library for highly enriched uranium and beryllium neutronic systems, and is in accordance with ANSI/ANS-8.1-1983(R1988) requirements for calculational methods. The validation has been performed on a Hewlett Packard 9000/Series 700 Workstation at the Oak Ridge Y-12 Plant Nuclear Criticality Safety Department using the Oak Ridge Y-12 Plant Nuclear Criticality Safety Software code package. Critical experiments from LA-2203, UCRL-4975, ORNL-2201, and ORNL/ENG-2 have been identified as having the constituents desired for this validation as well as sufficient experimental detail to allow accurate construction of KENO V.a calculational models. The results of these calculations establish the safety criteria to be employed in future calculational studies of these types of systems.
Date: September 29, 1994
Creator: Krass, A.W.; Elliott, E.P. & Tollefson, D.A.
Partner: UNT Libraries Government Documents Department

Bread: CDC 7600 program that processes Spent Fuel Test Climax data

Description: BREAD will process a family of files copied from a data tape made by Hewlett-Packard equipment employed for data acquisition on the Spent Fuel Test-Climax at NTS. Tapes are delivered to Livermore approximately monthly. The process at this stage consists of four steps: read the binary files and convert from H-P 16-bit words to CDC 7600 60-bit words; check identification and data ranges; write the data in 6-bit ASCII (BCD) format, one data point per line; then sort the file by identifier and time.
Date: April 1, 1983
Creator: Hage, G.L.
Partner: UNT Libraries Government Documents Department

Plutonium flowsheet development in miniature mixer-settlers

Description: Initial runs were completed in a new solvent extraction facility that has been built for testing coprocessing flowsheets with simulated LWR and FBR fuel solutions. The equipment, which is assembled in glove boxes, includes three 16-stage miniature mixer-settler banks with associated in-line monitors, pumping equipment, and sampling apparatus. Following shakedown runs with solutions containing uranium only, two flowsheet test runs were made with a simulated LWR fuel solution (U/Pu = 100). The solution was fed to an extraction-scrub bank, where 30% tributyl phosphate in normal paraffin hydrocarbon diluent was used to coextract uranium and plutonium. The extract was fed to a second mixer-settler bank, where all of the plutonium was stripped into an aqueous product stream using hydroxylamine nitrate for plutonium reduction; a controlled fraction of the uranium was simultaneously stripped to produce a U/Pu ratio of {similar_to}2. The amount of the uranium stripped with the plutonium was regulated by careful control of an organic backscrub stream. Finally, the residual uranium in the solvent was stripped in the third mixer-settler bank. The success of the experiments depended on precise control of very low liquid flow rates, and on in-line monitors which indicated the uranium or total heavy-metal concentrations. The most useful in-line device was the Mettler-Paar density meter, from which metal concentrations could be determined to within {similar_to}1 g/L. A miniature spectrophotometer also gave promising results for uranium analysis. Preliminary use of a Hewlett-Packard data acquisition system was satisfactory; recorded variables were temperature, solution density, liquid flow rates, and liquid levels.
Date: May 1, 1981
Creator: Hannaford, B.A. & Davis, G.D.
Partner: UNT Libraries Government Documents Department

Moving head disc operating system on an 854A automatic network analyzer

Description: The increased work load on the 8542A Automatic Network Analyzer revealed a need for a more efficient and flexible system to support measurement as well as software development projects. A search for such a system resulted in the choice of the moving head disc operating system (DOS-M). The conversion of the ANA operating system to DOS-M enhanced the operation and efficiency of the 8542A ANA. 5 figures.
Date: January 1, 1976
Creator: Tellez, R.M. & Jackson, W.D.
Partner: UNT Libraries Government Documents Department

Automatic network analyzer procedures for 5045 klystron cavities

Description: This Note describes the results of using Automatic Network Analyzers in measuring SLAC 5045 klystron cavities. Two different analyzers were compared; the HP8753 and HP8510. Both analyzers have frequency synthesizer accuracy and stability to perform the measurement without the need for a frequency counter. The klystron has six cavities which can be put into three categories; input, gain and output. The input and output cavities require an external Q measurement (Qe) to determine coupling ({beta}) and center frequency (f{sub o}). The gain cavities require a resonant frequency measurement only.
Date: July 1, 1991
Creator: Judkins, J.G.
Partner: UNT Libraries Government Documents Department

FSHAKER: a transient control program. [For HP 5451C]

Description: A description is given of FSHAKER, a transient control program for the performance of transient tests, written to run on the HP 5451C (Fourier) system. The report also contains a listing of a demonstration run made with FSHAKER. The appendix contains a commented listing of FSHAKER and listings of three Fortran user programs called by FSHAKER. (RWR)
Date: October 1, 1980
Creator: Cawlfield, J L
Partner: UNT Libraries Government Documents Department

HP-67 calculator programs for thermodynamic data and phase diagram calculations

Description: This report is a supplement to a tabulation of the thermodynamic and phase data for the 100 binary systems of Mo with the elements from H to Lr. The calculations of thermodynamic data and phase equilibria were carried out from 5000/sup 0/K to low temperatures. This report presents the methods of calculation used. The thermodynamics involved is rather straightforward and the reader is referred to any advanced thermodynamic text. The calculations were largely carried out using an HP-65 programmable calculator. In this report, those programs are reformulated for use with the HP-67 calculator; great reduction in the number of programs required to carry out the calculation results.
Date: May 25, 1978
Creator: Brewer, L.
Partner: UNT Libraries Government Documents Department

User's manual for the Functional Relay Operation Monitor (FROM)

Description: Sandia's Digital Systems Development Division 1521 has developed a new functional relay tester. Capabilities of this tester include the measurement of coil and contact resistance, hipot, operate current, and contact operation and bounce times. The heart of the tester is a Hewlett-Packard 21MX minicomputer that uses BASIC or FORTRAN programming languages. All measurements are made by means of simple program calls, and all measurement standards are traceable to the National Bureau of Standards. Functional relay test data are stored on a disc drive and can be output as hard copy, manipulated in the computer, or sent over a distributed-system link to other Sandia computers. 17 figures, 4 tables.
Date: February 1, 1981
Creator: Gustke, F.R.
Partner: UNT Libraries Government Documents Department

LSQFT: a nonlinear least squares data fitting subroutine suitable for minicomputers. [In FORTRAN for Hewlett Packard 1000]

Description: The FORTRAN subroutine LSQFT is described which uses the Gauss method to fit nonlinear functions to data. This particular program is suitable for use on a minicomputer that is utilized for real-time data acquisition and analysis. A sample problem is described that requires a nine-parameter nonlinear fit to 200 data points. This problem serves both to illustrate the use of LSQFT and to compare its results with TJMAR1, a nonlinear parameter estimation program available in the Sandia MATHLIB, for the CDC 6600/7600 computers. The results of this comparison fit are identical to the significance of the input convergence criteria. The output of LSQFT includes the standard deviation of each fit parameter, which is useful for analysis of the significance of the parameters based on the input data or for evaluation of functional models used to fit to the data. Examples are given of the types of graphical output that can be generated from the results of LSQFT. The program is documented and listed in its entirety, and a user's guide is provided. 10 figures.
Date: May 1, 1980
Creator: Drotning, W.D.
Partner: UNT Libraries Government Documents Department

TMX-U computer system in evolution

Description: Over the past three years, the total TMX-U diagnsotic data base has grown to exceed 10 megabytes from over 1300 channels; roughly triple the originally designed size. This acquisition and processing load has resulted in an experiment repetition rate exceeding 10 minutes per shot using the five original Hewlett-Packard HP-1000 computers with their shared disks. Our new diagnostics tend to be multichannel instruments, which, in our environment, can be more easily managed using local computers. For this purpose, we are using HP series 9000 computers for instrument control, data acquisition, and analysis. Fourteen such systems are operational with processed format output exchanged via a shared resource manager. We are presently implementing the necessary hardware and software changes to create a local area network allowing us to combine the data from these systems with our main data archive. The expansion of our diagnostic system using the paralled acquisition and processing concept allows us to increase our data base with a minimum of impact on the experimental repetition rate.
Date: March 4, 1986
Creator: Casper, T.A.; Bell, H.; Brown, M.; Gorvad, M.; Jenkins, S.; Meyer, W. et al.
Partner: UNT Libraries Government Documents Department

The integrated workstation, a realtime data acquisition, analysis and display system

Description: The Integrated Workstation was developed at Lawrence Livermore National Laboratory to consolidate the data from many widely dispersed systems in order to provide an overall indication of the enrichment performance of the Atomic Vapor Laser Isotope Separation experiments. In order to accomplish this task a Hewlett Packard 9000/835 turboSRX was employed to acquire over 150 analog input signals. Following the data acquisition, a spreadsheet-type analysis package and interpreter was used to derive 300 additional values. These values were the results of applying physics models to the raw data. Following the calculations were plotted and archived for post-run analysis and report generation. Both the modeling calculations, and real-time plot configurations can be dynamically reconfigured as needed. Typical sustained data acquisition and display rates of the system was 1 Hz. However rates exceeding 2.5 Hz have been obtained. This paper will discuss the instrumentation, architecture, implementation, usage, and results of this system in a set of experiments that occurred in 1989. 2 figs.
Date: May 1, 1991
Creator: Treadway, T.R. III.
Partner: UNT Libraries Government Documents Department

Multi-user data acquisition environment

Description: The typical data acquisition environment involves data collection and monitoring by a single user. However, in order to support experiments on the Mars facility at Lawrence Livermore National Laboratory, we have had to create a multi-user data acquisition environment where any user can control the data acquisition and several users can monitor and analyze data being collected in real time. This paper describes how we accomplished this on an HP A600 computer. It focuses on the overall system description and user communication with the tasks within the system. Our current implementation is one phase of a long-term software development project.
Date: January 1, 1983
Creator: Storch, N.A.
Partner: UNT Libraries Government Documents Department

A fast optics and orbit correction program

Description: CEBAF is a large recirculating linear accelerator with approximately 1600 magnet power supplies in the beam transport system. The average beam power can be as great as 800 kW, concentrated into a spot of area less than 0.01 mm{sup 2}. Control of the transport is therefore quite critical, to avoid missteering the beam. To prevent dangerous beam losses and to prepare optics changes, the control programs must read the magnet power supplies and calculate the optics in a virtually real-time manner. A program named OLE (On-Line Envelope) has been developed at CEBAF to give a graphical display of the calculated machine {beta} function or, equivalently, the beam envelope. The time interval necessary to execute the program is somewhat less than one second, short enough that the operator can use it for setting up his lattice. Emphasis in the design was placed on speed of program execution at the expense of generality of application. As a result, the accelerator operator will be able to alter the magnetic field in any element in the machine, calculate the {beta} functions in both planes at the entrance and exit of each magnet, and display graphs of the functions, all within one second. The time that is required is short enough that the process approximates fairly well real-time operation.
Date: August 1, 1990
Creator: Bowling, B.; Kewisch, J.; Kloeppel, P. & Rossmanith, R.
Partner: UNT Libraries Government Documents Department

Program to calculate deformation mechanism maps using an HP-9821A calculator

Description: A program was written to calculate deformation mechanism maps by using a Hewlett-Packard 9821A calculator. This report describes the equations which are used to represent the strain rate resulting from the five mechanisms considered. A listing of the program is given along with a complete description of how it performs the calculations. Step-by-step instructions are also provided along with the data required to calculate two example maps. 2 figures, 1 table.
Date: August 1, 1978
Creator: Coghlan, W.A.
Partner: UNT Libraries Government Documents Department

Computer controlled data measurement and analysis system used for measuring switching parameters of semiconductors. [Employs HP 2114B minicomputer; reports contain all applicable coding in assembly language]

Description: A computer-controlled data acquisition system which was employed to measure the threshold switching parameters of amorphous semiconductors is described. This system is capable of measuring the delay time required for a sample to switch, the electrical energy put into a sample and the charge passing through it during the delay time, and its ambient temperature. With this equipment an experimenter is able to control the magnitude and maximum duration of the voltage applied to a sample, the time interval between applications of voltage, and the load resistor in series with a sample. An HP 2114B minicomputer provides control and analysis capabilities for this system. Basically, this apparatus is a constant voltage pulse generator and signal processor. Major modules of this system are a transistorized high voltage switch, a digitally controlled high voltage resistor and power supply, a low-thermal-noise input-scanner, a precision timer, and two analog integrators. The amplitude of a voltage pulse can be varied from 0V to 1 kV and the maximum duration can be varied from 10 ..mu..s to 300 s. During the voltage pulse, a signal which represents the current through a sample is processed by analog integrators and signal multipliers. If the sample switches to a low-resistance state during a voltage pulse, this equipment automatically detects the event and removes the voltage from the sample to prevent sample deterioration. Following the voltage pulse, a teletypewriter prints the raw data from the integrators, power supply, and timer and the calculated values of the charge and energy input. 44 figures, 2 tables. (auth)
Date: January 1, 1976
Creator: Culp, C. H. & Eckels, D. E.
Partner: UNT Libraries Government Documents Department

Engine data measurement system. [Pouliot variable displacement engine]

Description: The data measurement and reduction system for the Pouliot variable displacement engine uses a Hewlett Packard 2114A minicomputer. The raw data are processed to compute the horsepower, air-fuel ratio, equivalence ratio, brake specific fuel consumption, and brake specific emissions of unburned hydrocarbons, oxides of nitrogen, and carbon monoxide. Emissions are checked for consistency by applying the chemical equilibrium theory of Spindt.
Date: September 1, 1976
Creator: Robinson, C. W.
Partner: UNT Libraries Government Documents Department