http://dl.gi.de/handle/20.500.12116/39451 2026-07-21T13:35:32Z 2026-07-21T13:35:32Z Kehrer, Timo Berlik, Stefan Kelter, Udo Ritter, Michael http://dl.gi.de/handle/20.500.12116/18153 2019-03-19T13:47:24Z 2012-01-01T00:00:00Z

Modellbasierte Entwicklung GPU-unterstützter Applikationen Kehrer, Timo; Berlik, Stefan; Kelter, Udo; Ritter, Michael Sinz, Elmar J.; Schürr, Andy Rechenintensive numerische Anwendungen müssen oft parallel auf Multiprozessorsystemen ausgeführt werden, um akzeptable Laufzeiten zu erzielen. Ein besonders wirtschaftlicher Ansatz hierbei ist die Nutzung preisgünstiger Grafikkarten (GPU, Graphics Processing Units), die eine große Zahl von Prozessoren enthalten. Aus diversen Gründen können i.d.R. aber nicht alle Funktionen auf der GPU ausgeführt werden, d.h. eine Anwendung muß teilweise auf der CPU und GPU ausgeführt werden. Softwaretechnisch resultieren hieraus zwei Probleme: erstens sind die Programmiersprachen und Entwicklungsmethoden für GPUs deutlich verschieden von denen von Allzweckprozessoren; moderne modellbasierte Entwicklungsmethoden sind kaum verfügbar. Zweitens ist für die Kooperationen der beiden Teile einer Anwendung in erheblichem Umfang Code zu implementieren. In diesem Papier stellen wir eine Lösung beider Probleme vor. Zunächst analysieren wir, welche Teilaufgaben bei der Implementierung von GPU-unterstützten Applikationen durch modellbasierte Entwicklungsmethoden und -Werkzeuge sinnvoll automatisiert werden können, um die Arbeitseffizienz und Korrektheit des Codes zu steigern. Sodann beschreiben wir ein auf dem Eclipse Modeling Framework basierendes Generatorsystem, das diese Implementierungsaufgaben automatisiert. Abschließend beschreiben wir an konkreten Beispielen, in welchem Umfang Code generiert werden konnte und welche Ausführungszeiten erzielt wurden.

2012-01-01T00:00:00Z Goldschmidt, Thomas Becker, Steffen Burger, Erik http://dl.gi.de/handle/20.500.12116/18148 2019-03-19T13:47:24Z 2012-01-01T00:00:00Z

Towards a tool-oriented taxonomy of view-based modelling Goldschmidt, Thomas; Becker, Steffen; Burger, Erik Sinz, Elmar J.; Schürr, Andy The separation of view and model is one of the key concepts of Model- Driven Engineering (MDE). Having different views on a central model helps modellers to focus on specific aspects. Approaches for the creation of Domain-Specific Modelling Languages (DSML) allow language engineers to define languages tailored for specific problems. To be able to build DSMLs that also benefit from view-based modelling a common understanding of the properties of both paradigms is required. However, research has not yet considered the combination of both paradigms, namely view-based domain specific modelling to a larger extent. Especially, a comprehensive analysis of a view's properties (e.g., partial, overlapping, editable, persistent, etc.) has not been conducted. Thus, it is also still unclear to which extent view-based modelling is understood by current DSML approaches and what a common understanding if this paradigm is. In this paper, we explore view-based modelling in a tool-oriented way. Furthermore, we analyse the properties of the view-based domain-specific modelling concept and provide a feature-based classification of these properties.

2012-01-01T00:00:00Z Schalles, Christian Creagh, John Rebstock, Michael http://dl.gi.de/handle/20.500.12116/18150 2019-03-19T13:47:24Z 2012-01-01T00:00:00Z

Exploring usability-driven differences of graphical modeling languages: an empirical research report Schalles, Christian; Creagh, John; Rebstock, Michael Sinz, Elmar J.; Schürr, Andy Documenting, specifying and analyzing complex domains such as information systems or business processes have become unimaginable without the support of graphical models. Generally, models are developed using graph-oriented languages such as Event Driven Process Chains (EPCs) or diagrams of the Unified Modeling Language (UML). For industrial use, modeling languages aim to describe either information systems or business processes. Heterogeneous modeling languages allow different grades of usability to their users. In our paper we focus on an evaluation of four heterogeneous modeling languages and their different impact on user performance and user satisfaction. We deduce implications for both educational and industrial use using the Framework for Usability Evaluation of Modeling Languages (FUEML).

2012-01-01T00:00:00Z Schaub, Michael Matthes, Florian Roth, Sascha http://dl.gi.de/handle/20.500.12116/18149 2019-03-19T13:47:24Z 2012-01-01T00:00:00Z

Towards a conceptual framework for interactive enterprise architecture management visualizations Schaub, Michael; Matthes, Florian; Roth, Sascha Sinz, Elmar J.; Schürr, Andy Visualizations have grown to a de-facto standard as means for decisionmaking in the management discipline of enterprise architecture (EA). Thereby, those visualizations are often created manually, so that they get soon outdated since underlying data change on a frequent basis. As a consequence, EA management tools require mechanisms to generate visualizations. In this vein, a major challenge is to adapt common EA visualizations to an organization-specific metamodel. At the same time, end-users want to interact with the visualization in terms of changing data immediately within the visualization for the strategic planning of an EA. As of today, there is no standard, framework, or reference model for the generation of such an interactive EA visualization. This paper 1) introduces a framework, i.e. an interplay of different models to realize interactive visualizations, 2) outlines requirements for interactive EA management visualizations referring to concepts of the framework, 3) applies the framework to a prototypical implementation detailing the therein used models as an example, and 4) compares the prototype to related work employing the framework.

2012-01-01T00:00:00Z