Parker, S.G., Johnson, C.R.: SCIRun: A scientific programming environment for computational steering. In: Proceedings of Supercomputing 1995. (1995)  Home/Search   Document Not in Database   Summary   Related Articles   Check

....Technique tailor it to the particular requirements of a specific research problem. A. SCIRun To reduce the time the scientist spends in using this standard modeling paradigm and to provide a tool for exploration of computational science and engineering problems, we havedeveloped SCIRun [48] [49]. SCIRun is a framework in which large scale computer simulations can be composed, executed, controlled and tuned interactively. Composing the simulation is accomplished via a visual programming interface to a dataflownetwork. To execute the program, one specifies parameters with a graphical user ....

S.G. Parker and C.R. Johnson. Scirun: A scientific programming environment for computational steering. In Supercomputing`95. IEEE Press, 1995. (submitted).

....immediate feedback on the subject under study, and so the visualization results can be stored rather than the much larger raw data. Rowlan [14] and Ma [9] demonstrate such tracking capability using direct volume rendering on a massively parallel computer. Some visualization software systems [4, 12] can support runtime tracking of three dimensional numerical simulations and they may be operated in a distributed computing environment. However, runtime tracking is not always possible and desirable for certain applications. For # MRJ at NASA Ames Research Center. This research was supported by ....

S. G. Parker and C. R. Johnson, SCIRun: A Scientific Programming Environment for Computational Steering, in On-line Proceedings of the 1995.

....Third, we empirically evaluate each application for performance and steering latency. Finally, we distill key issues from these experiences of transforming existing applications into steer able form. Related work. Many successful projects have tackled the concept of steering including SCIRun [9], CUMULVS [4] VASE [6] FALCON [5] Autopilot [11] and others [14] Additional endeavors have focussed on steering of particular application domains or of one customized application. Some representatives are SMD [8] the work by Beazley and Lomdahl [1] a case study of seismic tomography [3] ....

S. G. Parker and C. R. Johnson, SCIRun: a scientific programming environment for computational steering, in Proc. Supercomputing 95, San Diego, 1995, pp. 1-1.

.... real time interaction with remote sensors and instruments, or provide novel environments for human collaboration [2] There has also been a growing interest among high performance researchers in component based approaches, in an attempt to facilitate software evolution and promote software reuse [3, 4, 5]. When trying to reap the well known benefits of these approaches, the question of what communications infrastructure should be used to link the various components arises. In this context, flexibility and high pe;ormance seem to be incompatible goals. Traditional HPC style communications systems ....

....messages exchanged. The consequent need to simultaneously update all system components in order to change message formats is a significant impediment to system integration, deployment and evolution. New trends in high performance software development, such as tool and component based approaches [3, 4, 5], have increased the need for more flexible communication systems. This need has promoted the use of object oriented sys terns and of meta data representations. Although object technology provides for some amount of plug and play interoperability through subclassing and reflection, this typically ....

S. Parker and C. R. Johnson, "SCIRun: A scientific programming envi- ronment for computational steering," in Proceedings of Supercomputing '95 (SC1995.

....(via exhaustive search) for the volume reconstruction application. 7. Related Work There are several projects that have been seeking to develop techniques to allow applications to be responsive to their available resources or to allow them to be tuned at runtime. Computational Steering [5] 6][11][12] 13] 14] provides a way for users to alter the behavior of an application under execution. Harmony s approach is similar in that applications provide hooks to allow their execution to be changed. Many computational steering systems are designed to allow the application semantics to be altered; ....

S.G. Parker and C. R. Johnson, "SCIRun: a scientific programming environment for computational steering," Super- computing'95. Nov. 1995, San Diego, Vol. II, pp. 1419-39.

....have been presented by Vetter et. al in [17] and van Liere et. al in [23] The primary goal of DIOS DISCOVER is to combine the two capabilities to provide a collaborative PSE for application interaction and control. 1. Interactive program construction: Systems in this category, e.g. SCIRun [26], provide support for interactive program composition and construction. SCIRun allows users to graphically connect program components to create a data flow style program graph. It is primarily targeted to developing new applications. While SCIRun does provide some steering capabilities, it does ....

S.G. Parker, C.R. Johnson. "SCIRun: A scientific Programming Environment for computational steering," In Proceedings of Supercomputing '95, 1995.

....of material properties. In this paper, we describe our efforts in addressing the practical problems of working with very large molecular dynamics simulations. We have taken a computational steering approach in which simulation, data analysis, and visualization are combined into a single package [9,10,11,12]. However, we have adopted an approach that is extremely lightweight that is, it is memory efficient, simple to use, portable, easily extensible, and not dependent on expensive special purpose hardware. i.e. graphics workstations or high speed networking) The SPaSM Code Since 1992, we have ....

....It must also be usable from any UNIX workstation. Ease of use. Keep it simple and the scientists will use it. Previous efforts in computational steering seem to have focused primarily on interactivity and user interfaces while ignoring many of the issues important for large scale simulation [9,10,11,15]. As a result, we end up with scientific computing environments that are unnecessarily complicated and which continue to rely on high end graphics workstations and high bandwidth networks a solution that is simply not that attractive at this time due to both the high cost and limited ....

[Article contains additional citation context not shown here]

S.G. Parker and C.R. Johnson. "SCIRun: A Scientific Programming Environment for Computational Steering," Supercomputing `95, IEEE Computer Society, (1995).

....difficulty of debugging and development, and the lack of analysis tools. To address these problems, we have adopted the idea of computational steering and reorganized the code with a focus on modularity and integration of various components such as data analysis, visualization, and simulation [14, 15, 16]. Python serves as the glue of this system. Rather than having a large monolithic application, the new organization features a collection of loosely organized modules. Most of the functionality is found in a collection of C library files for running simulations, performing data analysis, message ....

S.G. Parker and C.R. Johnson. SCIRun: A Scientific Programming Environment for Computational Steering, Supercomputing `95, IEEE Computer Society, (1995).

....JGridHierarchy (Java Mirror of GridHierarchy) Web Server gridHierarchy.getXYSlice( response RMI Registry Joilwell (Java Mirror of oilwell) Web Server response objects and instrumentation points are explicitly inserted in the application program at compile time. SCIRun [11] uses visual programming to create a steering application and is suited for developing new applications for interactive steering. It allows for some monitoring of a running application and limited modification of the data flow network that constitutes the running application. It also provided a ....

. S.G. Parker, C.R. Johnson. SCIRun: A scientific Programming Environment for computational steering. In Proceedings of Supercomputing '95, 1995.

....interactive objects that can span multiple address spaces and can be dynamically created and destroyed, b) a scalable control network and (c) support for web based interaction and steering portals. Other interactive systems include systems for interactive program construction (e.g. SCIRun [6]) systems for interactive performance optimizations (e.g. Autopilot [15] systems for interactive application configuration and deployment (e.g. WebFlow [17] Gateway [3] In addition to these systems, there are numerous systems that provide web based collaborative visualization environments ....

Parker S.G., Johnson S.G.: SCIRun: A scientific Programming Environment for computational steering. Proceedings of Supercomputing (1995).

....In Falcon[10] also, existing applications can be integrated by manual annotation of application source code and provide the end user with an abstraction that reveals only the important steering parameters and output data. Also, there is no collaboration support among multiple clients. SCIRun[11] uses visual programming to create a steering application and is suited for developing new applications for interactive steering. It also allows for some monitoring of a running application and some limited modification of the data flow network that constitutes the running application. It also ....

. S.G. Parker, C.R. Johnson. SCIRun : a scientific Programming Environment for computational steering. In Proceedings of Supercomputing '95, 1995.

....does not explicitly address optimization using CS E objective functions. A number of researchers have investigated the use of Genetic Algorithms for solving complex optimisation problems of the type discussed here, but they do not support multiple search algorithms in the same tool [24] SciRun [8], and its follow on Uintah [9] are interactive tools that allow a user to build a CS E model very rapidly using a graphical programming interface. However, they do not support optimisation. In contrast, Nimrod O combines optimization, distributed computing and rapid prototyping in one tool. The ....

Parker, S. and Johnson, C. "SCIRun: A Scientific Programming Environment for Computational Steering", Proceedings of IEEE Supercomputing 1995, San Diego, December 95.

....briefly describe below. Details surveys have been presented in [4] 5] The primary goal of DISCOVER is to combine the two capabilities to provide a collaborative PSE for application interaction and control. 1. Systems for interactive program construction: Systems in this category, e.g. SCIRun [6], provide support for interactive program construction. SCIRun allows users to graphically connect program components to create a data flow style program graph. It is primarily targeted to developing new applications. While SCIRun does provide some steering capabilities, it does not support ....

S.G. Parker, C.R. Johnson. "SCIRun: A scientific Programming Environment for computational steering," In Proceedings of Supercomputing '95, 1995.

....In Falcon[10] also, existing applications can be integrated by manual annotation of application source code and provide the end user with an abstraction that reveals only the important steering parameters and output data. Also, there is no collaboration support among multiple clients. SCIRun[11] uses visual programming to create a steering application and is suited for developing new applications for interactive steering. It also allows for some monitoring of a running application and some limited modification of the data flow network that constitutes the running application. It also ....

. S.G. Parker, C.R. Johnson. SCIRun : a scientific Programming Environment for computational steering. In Proceedings of Supercomputing '95, 1995.

.... Reported results vary from presentations of single computational steering applications (e.g. the steering of a 3D turbulence model of Lake Erie developed by Marshall et al. 13] to the development of general environments for computational steering (e.g. the SCIRun environment by Parker et al. [16] and the VASE environment by Jablonowski et al. 10] Vetter [19] has com 3. The Computational Steering Environment in the CAVE 3 posed an annotated bibliography that provides a broad overview of computational steering research. Relatively little research however, has been done on using virtual ....

S.G. Parker and C.R. Johnson. SCIRun: a scientific programming environment for computational steering. In Proceedings of Supercomputing '95, 1995.

.... steering enhances productivity by greatly reducing the time between changes to parameters and the viewing of the results [11] it enables the user to explore a what if analysis [4] and as changes in parameters become more instantaneous, the cause effect relationships become more evident [14]. Computational steering is applicable in many areas of computational science. In a broad perspective, all interactive computational processes can be regarded as a form of steering. Examples in this regard are the online debugging of source codes, interactive scientific visualization, and ....

....with the use of existing visualization packages such as IRIS Explorer. Breakpoint scripts, data ports, and data channels have to be configured to transfer the data from the application to the visualization package. 3. 2 SCIRun The second computational steering environment we consider is SCIRun [14, 15]. The SCIRun environment was developed at the University of Utah. The name SCIRun was derived from the Scientific Computing and Imaging research group. 3. Computational Steering Environments 5 Scope SCIRun primarily provides steering for model exploration and algorithm experimentation. In ....

S.G. Parker and C.R. Johnson. SCIRun: a scientific programming environment for computational steering. In Proceedings of Supercomputing '95, 1995.

....Runtime visualization of time dependent simulations has been demonstrated by several researchers. Rowlan [22] and Ma [14] independently demonstrated runtime tracking of three dimensional numerical simulations using direct volume rendering on a massively parallel computer. VISUAL3 [7] and SCIRun [21] are among a few software systems that can support runtime tracking. These systems can be operated in a distributed computing environment. Many techniques have been developed for visualizing time varying data as a postprocess. Lane [13] developed a particle tracer for three dimensional ....

S. G. Parker and C. R. Johnson. SCIRun: A Scientific Programming Environment for Computational Steering. In On-line Proceedings of the 1995 Supercomputing Conference, 1995. http://scxy.tc.cornell.edu/sc95/proceedings/.

....of scientific and engineering computing infrastructure from scaling the performance of individual applications to exploring new ways to increase programmer productivity. Several component systems designed for wide area, scientific computation have been built and are now in use. SciRun from Utah [28], 26] provides a powerful extension to scalable, parallel computation and visualization of a component paradigm used with AVS and IRIS Explorer [10] Webflow from Syracuse [7] 25] uses CORBA as part of a multi tiered architecture for a scientific problem solving workbench. High performance ....

S.G. Parker and C.R. Johnson. SCIRun: A scientific programming environment for computational steering. In Supercomputing `95. IEEE Press, 1995.

....objective function being specified in an algebraic form and does not support objective functions implemented by CS E models. Likewise, NetSolve [12] provides a web based engine for solving linear algebra problems, but does not explicitly address optimization using CS E objective functions. SciRun [13] is an interactive tool which allows a user to build a CS E model very rapidly using a graphical programming interface. However, it does not support optimization. In this paper we describe Nimrod O, a tool which augments the distributed parameter sweep functionality of Nimrod with automatic ....

Parker, S. and Johnson, C. "SCIRun: A Scientific Programming Environment for Computational Steering", Proceedings of IEEE Supercomputing 1995, San Diego, December 95.

....P(q) 0.01 reduction (ms) ms) pct)ERT 612 bytes 113:37 62.19 45 304K 922.44 63.99 93 2.73M 11627.08 65.56 99 Table 3. Extremes of effect of condition strength on ERT. 6 Related Research Run time detection in event based environments has a long history. Pablo [28] Paradyn [20] SCIRun [24], and Falcon [15] established run time performance evaluation of parallel and distributed systems. Run time detection to satisfy client needs for data, the focus of our work, has used fuzzy logic [29] and rule based control [2] We argue that, because of the more static nature of these approaches, ....

S.G. Parker and C.R. Johnson. SCIRun: a scientific programming environment for computational steering. In Proc. Supercomputing 95, pages 1--1, 1995.

....immediate feedback on the subject under study, and so the visualization results can be stored rather than the much larger raw data. Rowlan [14] and Ma [9] demonstrate such tracking capability using direct volume rendering on a massively parallel computer. Some visualization software systems [4, 12] can support runtime tracking of three dimensional numerical simulations and they may be operated in a distributed computing environment. However, runtime tracking is not always possible and desirable for certain applications. For example, one may want to explore the data set from di#erent ....

S. G. Parker and C. R. Johnson, SCIRun: A Scientific Programming Environment for Computational Steering, in On-line Proceedings of the 1995 Supercomputing Conference, 1995. http://scxy.tc.cornell.edu/sc95/proceedings/.

....2. Related Work. Ideally, visualizing time varying volume data should be done while data are being generated, so that users receive immediate visual feedback on the subject under study, and so the visualization results can be stored rather than the much larger raw data. VISUAL3 [7] and SCIRun [18] are among the many software systems that can support runtime tracking of three dimensional numerical simulations. These systems may be operated in a distributed computing environment. Rowlan [19] and Ma [12] also demonstrate such tracking capability using direct volume rendering on a massively ....

S. G. Parker and C. R. Johnson, SCIRun: A Scientific Programming Environment for Computational Steering, in On-line Proceedings of the 1995 Supercomputing Conference, 1995. http://scxy.tc.cornell.edu/sc95/proceedings/.

....and others, are shown in Figure 1. Core services of an event based monitoring system [2] include instrumenting the source code, buffering the instrumented data, and sending the data to interested clients. These core services have been addressed by such projects as Pablo [22] Paradyn [17] SCIrun [19], Falcon [12] and [8] Event stamping, the first of the extension services listed, is often provided to enable ordering of events. Clock synchronization algorithms are often used to order events. Program steering, the feedback part of the monitoring steering loop, enables scientists to control ....

S.G. Parker and C.R. Johnson. SCIRun: a scientific programming environment for computational steering. In Proc. Supercomputing 95, pages 1--1, 1995.

....between scientists at unprecedented levels. Furthermore, in the late 80 s, researchers developed general approaches to program monitoring[1] 2] 3] followed by advances in program adaptation[4] and steering[5] Specifically, by coupling program monitoring and steering with online visualizations[6], 7] of scientific data, it has now become possible for scientists to interact with their simulations at runtime and in a variety of ways that do not depend on simulation designs or implementations. As a result, intermediate program values may be inspected at will, parameters may be changed on ....

S.G. Parker and C.R. Johnson, "SCIRun: a scientific programming environment for computational steering," in Proc. Supercomputing 95, 1995, pp. 1--1.

....computations with a single main loop[4] Application specific steering systems typically solve the consistency problem in an applicationspecific manner. At the other end of the spectrum, more complex schemes for controlling interaction points[5] 6] and detecting changes that affect consistency[7] have been developed. However, few of these systems address the coordination of steering actions across multiple processes in a distributed system. The scripting approach to interactive steering involves breaking up code written in C, C , or FORTRAN into modules, and using scripts written in ....

....use of this approach include the SPaSM molecular dynamics code[9] and Winfield s virtual laboratory notebook[1] However, interaction is severely restricted, being limited only to the invocation of modules, with no control over their inner workings. The dataflow approach is exemplified by SCIRun[7], a scientific programming environment that allows the interactive construction, debugging, and steering of large scale scientific computations. The primary purpose of SCIRun is to enable the user to interactively control scientific simulations while the computation is in progress. Composing the ....

S.G. Parker and C.R. Johnson, "SCIRun: A scientific programming environment for computational steering," in Supercomputing '95, 1995.

.... applications [1] the adjustment of operating system mechanisms to improve application performance[2, 3] and the improvement of load balance in scientific applications [4] Steering performed for purposes of experimentation with target applications alter models and applications attributes[5, 6, 4, 7]. For example, the steering interface developed for the global atmospheric modeling code described in [8] permits space scientist to run the code with alternative settings for atmospheric transport, to restart the code from a previously defined checkpoint, and to gradually inject certain chemical ....

....to change state. Debugging mechanisms do not enforce system integrity with conditions as steering action tuple do and this lack of conditions allows arbitrary changes to the system which might invalidate system execution. Several systems use dataflow architectures for steering and visualization [5, 12]. Dataflow systems are the easiest to map to this feedback model. Computation is usually contained within modules whose input and output are connected to other modules for visualization and control. This dataflow network forces an ordering similar to the proposed model ordering on the computation ....

S. G. Parker and C. R. Johnson, "Scirun: a scientific programming environment for computational steering," in Proc. Supercomputing 95, (San Diego), pp. 1--, 1995.

....3, 26] they include automated adjustments in distributed or high performance systems to improve the usage of scarce resources[25] they also include user directed system changes, typically termed program steering. Steering system examples include Falcon [9] MOSS [8] Autopilot[25] SCIRun[19], and the Schooner steering and program control system [1] Approach. The detection techniques we are developing are intended for distributed and parallel applications. The specific example of their use presented in this paper is the detection of hazards in continuous safety critical ....

S.G. Parker and C.R. Johnson. SCIRun: a scientific programming environment for computational steering. In Proc. Supercomputing 95, pages 1--1, 1995.

.... Reported results vary from presentations of single computational steering applications (e.g. the steering of a 3D turbulence model of Lake Erie developed by Marshall et al. 13] to the development of general environments for computational steering (e.g. the SCIRun environment by Parker et al. [16] and the VASE environment by Jablonowski et al. 10] Vetter [19] has composed an annotated bibliography that provides a broad overview of computational steering research. Relatively little research however, has been done on using virtual environments in computational steering applications. ....

S.G. Parker and C.R. Johnson. SCIRun: a scientific programming environment for computational steering. In Proceedings of Supercomputing '95, 1995.

....steering, where the steering infrastructure extracts run time sensor information from an application, presents this information to the user who selects system or application policies, and actuates these policies to change application behavior. Falcon as in Gu [27] and SciChem from Parker [28] are two representative examples of this interactive approach. In contrast to interactive steering environments, automatic steering environments do not require continuing user involvement. Instead, steering decisions are made automatically without user intervention. DIRECT [10] Falcon [29,30] and ....

PARKER, S.G., AND JOHNSON, C.R. SciRun: A Scientific Programming Environment for Computational Steering. In Proceedings of Supercomputing '95 (December 1995).

.... steering enhances productivity by greatly reducing the time between changes to parameters and the viewing of the results [11] it enables the user to explore a what if analysis [4] and as changes in parameters become more instantaneous, the cause effect relationships become more evident [14]. 1 fmullie robertlg cwi.nl 2 vanwijk win.tue.nl Preprint submitted to Elsevier Science 10 July Computational steering is applicable in many areas of computational science. In a broad perspective, all interactive computational processes can be regarded as a form of steering. Examples in this ....

....with the use of existing visualization packages such as IRIS Explorer. Breakpoint scripts, data ports, and data channels have to be configured to transfer the data from the application to the visualization package. 3. 2 SCIRun The second computational steering environment we consider is SCIRun [14,15]. The SCIRun environment was developed at the University of Utah. The name SCIRun was derived from the Scientific Computing and Imaging research group. Scope SCIRun primarily provides steering for model exploration and algorithm experimentation. In addition, some minor functionality for ....

S.G. Parker and C.R. Johnson. SCIRun: a scientific programming environment for computational steering. In Proceedings of Supercomputing '95, 1995.

No context found.

Parker, S.G., Johnson, C.R.: SCIRun: A scientific programming environment for computational steering. Proc. Supercomputing `95. IEEE Press (1995)

....lest the application lose portability. 1. 1 SCIRun: User Interaction and Steering a Computation To achieve execution speeds needed for interactive three dimensional problem solving and visualization, a multi threaded problem solving environment and computational steering system, called SCIRun [1, 2], was built to make use of a shared memory multiprocessor, notably the SGI Power Challenge and SGI Origin 200 2000. The SCIRun scientific problem solving environment (PSE) is a computational steering system [3] that allows the interactive construction, debugging, and steering of large scale ....

S.G. Parker and C.R. Johnson. SCIRun: A scientific programming environment for computational steering. In Supercomputing `95. IEEE Press, 1995.

....Construction Finite Element Mesh Generation Figure 1: A schematic representation of the EEG finite element modeling pipeline. For implementing the functional units of this finite element modeling pipeline and connecting them together, we have chosen to use the SCIRun BioPSE software system [9, 10, 11]. SCIRun is a problem solving environment that uses a visual dataflow and computational steering framework. SCIRun provides an underlying architecture and development environment for applications. A system that provides both a visual dataflow interface and computational steering capabilities is ....

S.G. Parker and C.R. Johnson. SCIRun: A scientific programming environment for computational steering. In Supercomputing `95. IEEE Press, 1995.

....celebrating the 10 year anniversary of the Supercomputer Conference in Mannheim. At the conference, I introduced a new scientific problem solving environment called SCIRun to solve large scale problems in computational medicine [1] Since that time, 1 many papers on SCIRun have been published [2, 3, 4, 5] and other researchers have started to use SCIRun [6, 7, 8] These new applications range from large scale atmospheric diffusion simulations, to problems in optical tomography, reservoir simulation and visualization, and new visualization techniques for vector fields using haptic (force) feedback. ....

S.G. Parker and C.R. Johnson. SCIRun: A scientific programming environment for computational steering. In Supercomputing `95. IEEE Press, 1995.

....designed that allows a scientist to efficiently link these traditionally disparate phases. Through this combination, a scientist or engineer can rapidly investigate the solution space for iterative computational design problems. This dissertation investigates these issues in the context of SCIRun [59, 60, 89, 90, 92], a problem solving environment that applies the concept of computational steering to a variety of scientific problems. SCIRun has primarily focused on computational field problems, although other applications are described as well. Such an environment should address the following issues: 1. ....

PARKER, S., AND JOHNSON, C. SCIRun: A scientific programming environment for computational steering. In Supercomputing `95 (1995), IEEE Press.

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S.G. Parker & C.R. Johnson. SCIRun: A Scientific Programming Environment for Computational Steering. Supercomputing '95, 1995.

....and the registration cord laced around the body prior to scanning (lower left) II. CASE STUDY: COMPUTATIONAL BIOELECTRIC FIELDS Much of the problem solving environment research at Utah has focused on SCIRun, an interactive environment for creating and steering scientific applications [2] [24], 20] 3] SCIRun is a scientific programming environment that allows the interactive construction and steering of large scale scientific computations. A scientific application is constructed by connecting computational elements (modules) to form a program (network) This program may contain ....

S.G. Parker and C.R. Johnson. SCIRun: A scientific programming environment for computational steering. In Supercomputing `95. IEEE Press, 1995.

....computational environment comprised of many machines. 2. 1 The SCIRun Problem Solving Environment To achieve execution speeds needed for interactive three dimensional problem solving and visualization, a multi threaded problem solving environment and computational steering system, called SCIRun [6, 7], was built to make use of a III shared memory multiprocessor, notably the SGI Power Challenge and SGI Origin 200 2000. The SCIRun scientific problem solving environment is a computational steering system [1] that allows the interactive construction, debugging, and steering of large scale ....

S.G. Parker and C.R. Johnson. SCIRun: A scientific programming environment for computational steering. In Supercomputing `95. IEEE Press, 1995.

....demonstrate the applicability of SCIRun to complex multi species multidimensional transient flows. 2 SCIRun a Computational Steering System SCIRun is a scientific programming environment that allows the interactive construction, debugging and steering of large scale scientific computations [8, 7, 6]. SCIRun can be envisioned as a computational workbench, in which a scientist can design and modify simulations interactively via a dataflow programming model. SCIRun enables scientists to modify geometric models and interactively change numerical parameters and boundary conditions, as well as ....

S.G. Parker and C.R. Johnson. "SCIRun: A scientific programming environment for computational steering." Supercomputing `95, IEEE Press, 1995.

....A more detailed description 13 of this system will be published elsewhere [11] B. The SCIRun Computational Steering System Much of the computational steering research at Utah has focused on SCIRun, an interactive environment for creating and steering scientific applications [9] 10] [16]. SCIRun is a scientific programming environment that allows the interactive construction and steering of large scale scientific computations. A scientific application is constructed by connecting computational elements (modules) to form a program (network) This program may contain several ....

Parker. S.G. and C.R. Johnson. SCIRun: A scientific programming environment for computational steering. In Supercomputing `95. IEEE Press, 1995.

No context found.

S.G. Parker and C.R. Johnson. Scirun: A scientific programming environment for computational steering. In Supercomputing `95. IEEE Press, 1995. (submitted).

....exclusively for computational steering. In this chapter, we focus on the latter, the SCIRun 5 [1] computational steering software system. SCIRun is a scientific programming environment that allows the interactive construction, debugging and steering of large scale scientific computations [3]. SCIRun can be envisioned as a computational workbench, in which a scientist can design and modify simulations interactively via a dataflow programming model. SCIRun enables scientists to modify geometric models and interactively change numerical parameters and boundary conditions, as well as ....

....elem) f if(stream.reading( if we re reading. elem=new Element( allocate a new element stream.begincheapdelim( Pio(stream, elem n[0] read write all of the Pio(stream, elem n[1] indices for the four Pio(stream, elem n[2] nodes composing the Pio(stream, elem n[3]) tetrahedral element stream.endcheapdelim( g It is important to remember that these small functions will both read and write the mesh for both binary files and text files. This feature virtually eliminates the potential for incompatibilities between the reading code and the writing code. ....

S.G. Parker and C.R. Johnson. SCIRun: A scientific programming environment for computational steering. In Supercomputing `95. IEEE Press, 1995. http://www.supercomp.org/sc95/proceedings/499 spar/sc95.htm.

....computational parameters during simulation. Currently, many debugging systems provide this capability in a low level form. SCIRun, on the other hand, provides high level control over parameters in an efficient and intuitive way through graphical user interfaces and scientific visualization [4] [5]. These methods permit the scientist or engineer to close the loop and use the visualization to steer phases of the computation. The ability to steer a large scale simulation provides many advantages to the scientific programmer. As changes in parameters become more instantaneous, the ....

S.G. Parker and C.R. Johnson, "SCIRun: A scientific programming environment for computational steering", in Supercomputing `95. 1995, IEEE Press.

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Parker, S.G., Johnson, C.R.: SCIRun: A scientific programming environment for computational steering. In: Proceedings of Supercomputing 1995. (1995)

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S. Parker and C. Johnson. Scirun: A scientific programming environment for computational steering. In Proc. ACM/IEEE conference on Supercomputing, San Diego, CA, Dec. 1995.

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S.G. Parker and C.R. Johnson. SCIRun: A scientific programming environment for computational steering. In Supercomputing'95. IEEE Press, 1995.

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Steven G. Parker and Christopher R. Johnson. SCIRun: A scientific programming environment for computational steering. In Supercomputing '95, 1995.

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Steven G. Parker and Christopher R. Johnson. SCIRun: A scientific programming environment for computational steering. December 1995.

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Steven G. Parker and Christopher R. Johnson. SCIRun: A scientific programming environment for computational steering. In Proceedings of the 1995.

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Parker, S.G. and C. R. Johnson. "SCIRun: A Scientific Programming Environment for Computations Steering." Proceedings of the 1995 ACM/IEEE Supercomputing Conference. San Diego, 3-8 Dec. 1995. AIN.HTM>.

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