The Otho Toolkit – Synthesizing tailor-made scientific grid application wrapper services

Hofer, Jürgen; Fahringer, Thomas

doi:10.3233/mgs-2007-3302

Cited by 8 publications

(6 citation statements)

References 18 publications

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“…Each level of the workflow represent a phase in the processing, and the width represent the number of input images. This workflow has been used in several papers to measure characteristics of a middleware, a workflow engine or a scheduler [24,35].…”

Section: Benchmarksmentioning

confidence: 99%

Experimental Methodologies for Large-Scale Systems: A Survey

Gustedt

Jeannot

Quinson

2009

Parallel Process. Lett.

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The increasing complexity of available infrastructures with specific features (caches, hyperthreading, dual core, etc.) or with complex architectures (hierarchical, parallel, distributed, etc.) makes it extremely difficult to build analytical models that allow for a satisfying prediction. Hence, it raises the question on how to validate algorithms if a realistic analytic analysis is not possible any longer. As for some many other sciences, the one answer is experimental validation. Nevertheless, experimentation in Computer Science is a difficult subject that today still opens more questions than it solves: What may an experiment validate? What is a "good experiment"? How to build an experimental environment that allows for "good experiments"? etc. In this paper we will provide some hints on this subject and show how some tools can help in performing "good experiments", mainly in the context of parallel and distributed computing. More precisely we will focus on four main experimental methodologies, namely in-situ (real-scale) experiments (with an emphasis on PlanetLab and Grid'5000), Emulation (with an emphasis on Wrekavoc) benchmarking and simulation (with an emphasis on SimGRID and GridSim). We will provide a comparison of these tools and methodologies from a quantitative but also qualitative point of view.

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Section: Benchmarksmentioning

confidence: 99%

Experimental Methodologies for Large-Scale Systems: A Survey

Gustedt

Jeannot

Quinson

2009

Parallel Process. Lett.

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“…The Otho Toolkit realises the transformation of the SGA specifications into a platform-specific problem representation 2 In previous work [7] we examined a Model-driven Architecture [8]-based approach. However we discontinued the strict use of its formalisms and tools because of immature tool support and too strong emphasis on UML that we found inadequate for our purpose.…”

Section: Otho Toolkitmentioning

confidence: 99%

“…The Otho Toolkit 2 [7] is a research software atomatising the synthesis of X S from SGA specifications. Multiple target X S platforms and different means to execute the wrapped program (local execution, job submission) are available.…”

Section: Otho Toolkit System Detailsmentioning

confidence: 99%

Presenting Scientific Legacy Programs as Grid Services via Program Synthesis

Hofer

Fahringer

2006

2006 Second IEEE International Conference on E-Science and Grid Computing (E-Science'06)

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Extraordinary long lifecycles of many scientific applications commonly surpass multiple generations of Grid technologies. Therefore the smooth adaptation and migration to newer environments remains as interesting research question. This paper presents the Otho Toolkit for synthesis of applicationspecific Grid service wrappers based on specifications of scientific legacy programs. The services are customised and tailor-made for a specific application, service hosting environment and computational infrastructure and include source code for optional manual refinement. We demonstrate its unique combination of advanced features like support for multiple service platforms, parameter sweeping, iterative and parallel programs, progress-reporting, filestaging and security credential management. Moreover our services reliably identify program termination-causes based on programmatically evaluated post-mortem program states. We applied the Otho Toolkit recursively to itself to synthesise a sophisticated Factory service that creates application-specific Grid services on-demand 1 .

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“…The Otho Toolkit [2], [3], [4] is a research software automatising the synthesis of X S based on SGA specifications in order to close the gap between batch-oriented scientific non-SOA programs and Web Service Grids. It realises the transformation of the SGA specifications into a platform-specific problem representation and generates all source code artifacts.…”

Section: Otho Toolkit System Detailsmentioning

confidence: 99%

Specification-based Synthesis of Tailor-made Grid Service Wrappers for Scientific Legacy Codes

Hofer

Fahringer

2006

2006 7th IEEE/ACM International Conference on Grid Computing

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The long lifecycles of many scientific applications tend to surpass multiple generations of Grid technologies opening an increasing gap developers need to bridge. Automatic adaptation and migration of software to newer environments remains therefore as interesting research question. Most existing stateof-the-art solutions are Grid middleware services that execute programs based on provided descriptions forcing clients to use a generic and non-problem-centric interface. This short paper outlines the Otho Toolkit for synthesis of Grid application wrapper services based on specifications of scientific legacy programs. The generated output are service source codes that are either automatically built and packaged into a ready-to-deploy services or taken by developers for manual refinement. The services are customised and tailor-made for a specific application, service hosting environment and computational infrastructure. To increase their benefit they can be enhanced with supplemental functionality such as security credential management or filestaging. We applied the Otho Toolkit recursively to itself to synthesise a sophisticated Factory service that creates application-specific Grid services on-demand.

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The Otho Toolkit – Synthesizing tailor-made scientific grid application wrapper services

Cited by 8 publications

References 18 publications

Experimental Methodologies for Large-Scale Systems: A Survey

Experimental Methodologies for Large-Scale Systems: A Survey

Presenting Scientific Legacy Programs as Grid Services via Program Synthesis

Specification-based Synthesis of Tailor-made Grid Service Wrappers for Scientific Legacy Codes

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