Modeling spatiotemporal phenomena can provide insight into potential behavior of simulated objects during hypothetical events. Simulation frameworks can be a useful method of modeling these scenarios, and become more flexible when developed in a fashion that facilitates automated generation of output based on variable input parameters. By connecting a simulation framework to a web-based system, a user can assign input parameters of their choosing, run a simulation, and explore the output data in a dynamic, animated, map-based context using a standard web browser. The framework described here utilizes tsunami simulation data and user input to generate a combined web-based visualization and simulation model of human response to tsunami inundation. Input parameters pertaining to human population and community of interest are provided by the user and guide automated development of a simulation model scenario of spatiotemporal human response to a hypothetical tsunami inundation event. Simulated human movement is calculated at each time step using casualty model algorithms informed by behavioral research and variables such as water depth and road networks, while a mix of server-side and client-side code renders the mapping interface and supports user interaction within the web browser. Interactive controls included in the web-based simulation viewer allow the user to manipulate the map display and query underlying data either manually by time step or interactively while animation is underway. Although modeling of human movement has inherent limitations, integration of a formal casualty model with the automated simulation framework represents a unique quantitative approach for casualty determination and simulation modeling.

No abstract available.

Parallel computing has been portrayed as a technology that will enable users to solve very large and complex problems very quickly. But has this portrayal created unreasonably high expectations for potential parallel users? This paper reports the results of a survey designed to delineate the differences in how computer scientists and technical programmers approach parallel programming. Responses from 326 "potential parallel programmers" at Supercomputing '93 are presented. The analysis provides information about the costs and benefits associated with parallel programming, application development activities, and the extent of tool use in those activities. It shows that users expect very dramatic gains in performance from parallel machines, while underestimating the amount of effort that will be needed. The results should be of interest to parallel tool developers and people involved in training parallel programmers.>

No abstract available.

An overview of language support for parallel technical computing is provided. The rationale for multithreaded languages, in which the programmer explicitly specifies what work is to be carried out by multiple processors and how their activities should be coordinated, is described. The discussion begins with an introduction to the general models for manipulating multiple threads and how they are incorporated into programming languages. The wide variety of features for creating multiple threads, scheduling their execution, synchronizing their activities, and sharing data among them are then examined. Examples in a simplified, FORTRAN-like notation are included. It is shown how the language features are distributed among commercial compiler implementations. Some less traditional approaches to multithreaded language support are presented to provide a glimpse at what might be expected in future languages and compilers.>

xSICSIH is an X-based graphical interface for the SICSIM computer simulation tool.Its graphical portrayal of register-level components tmwforms the 'black box" SICSIM machine into a 'visual computer", helping students understand how computers work.Single step, fast-ezecution, and breakpoints are among the control features helpful for debugging assembly language programs.Automatic disassembly and format conversions and displays for comparing expected to actual execution reduce fiwstmtion in debugging loader, macro processor, and assembler projects.

Article Free Access Share on Graphical animation of parallel Fortran programs Authors: Sue Utter-Honig Technology Integration Group, Cornell National Supercomputer Facility, Cornell University, Ithaca, New York Technology Integration Group, Cornell National Supercomputer Facility, Cornell University, Ithaca, New YorkView Profile , Cherri M. Pancake Cornell Theory Center, Dept. of Computer Science and Engineering, Auburn University, Auburn, Alabama Cornell Theory Center, Dept. of Computer Science and Engineering, Auburn University, Auburn, AlabamaView Profile Authors Info & Claims Supercomputing '91: Proceedings of the 1991 ACM/IEEE conference on SupercomputingAugust 1991 Pages 491–499https://doi.org/10.1145/125826.126079Published:01 August 1991Publication History 6citation228DownloadsMetricsTotal Citations6Total Downloads228Last 12 Months17Last 6 weeks1 Get Citation AlertsNew Citation Alert added!This alert has been successfully added and will be sent to:You will be notified whenever a record that you have chosen has been cited.To manage your alert preferences, click on the button below.Manage my AlertsNew Citation Alert!Please log in to your account Save to BinderSave to BinderCreate a New BinderNameCancelCreateExport CitationPublisher SiteeReaderPDF

The complexity of parallel programming has stimulated the development of a variety of debugging tools. This survey of recent research focuses on debugger visualization systems. The effectiveness of such systems is bounded by the degree to which their representations of run-time behavior correlate with the language structures used to incorporate parallelism, as well as the logical framework adopted by the programmer. Current visualization systems are compared with the conceptual models supported by parallel languages. Attention is drawn to the fact that debuggers are tied to specific models and that this association may restrict their usefulness and acceptability.