Using semi-lagrangian formulations with automatic code generation for environmental modeling

Mark, Paul van der; Wolters, Lex; Cats, Gerard

doi:10.1145/967900.967950

Cited by 3 publications

(2 citation statements)

References 13 publications

(8 reference statements)

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“…For our implementation of the model, we let CTADEL generate scalar code which we have extended with a halo by hand [17]. This halo is communicated between the processors using MPI calls.…”

Section: Full Halo Methodsmentioning

confidence: 99%

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A dynamic application-driven data communication strategy

Mark

Wolters

Cats

2004

Proceedings of the 18th Annual International Conference on Supercomputing

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The use of semi-Lagrangian formulations in numerical weather predication models (NWP) allows for an increase in time step size. Use of this method can increase performance of these models. However, on parallel architectures, communication between processors can become a huge bottleneck, limiting speedup. Furthermore, the communication pattern is dependent on the application's execution. We discus a novel strategy, called Halo on Demand, which dynamically drives the communication between the processors by examining the content of the data at runtime in order to reduce communication costs. With an extensive performance analysis of the execution of the model we show that our strategy can decrease communication time and thus decrease total execution time.

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“…For our implementation of the model, we let CTADEL generate scalar code which we have extended with a halo by hand [17]. This halo is communicated between the processors using MPI calls.…”

Section: Full Halo Methodsmentioning

confidence: 99%

“…In previous work, [16,17], we have explained how to automatically generate code for semi-Lagrangian methods from a specification of the model using the CTADEL tool [15,18]. With a number of experiments we have shown that these generated codes can compete with hand-written code on both scalar and parallel architectures.…”

Section: Introductionmentioning

confidence: 99%

A dynamic application-driven data communication strategy

Mark

Wolters

Cats

2004

Proceedings of the 18th Annual International Conference on Supercomputing

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System-scenario-based design of dynamic embedded systems

Gheorghita

Palkovic²,

Hamers

et al. 2009

ACM Trans. Des. Autom. Electron. Syst.

131

117

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Document VersionPublisher's PDF, also known as Version of Record (includes final page, issue and volume numbers) Please check the document version of this publication:• A submitted manuscript is the author's version of the article upon submission and before peer-review. There can be important differences between the submitted version and the official published version of record. People interested in the research are advised to contact the author for the final version of the publication, or visit the DOI to the publisher's website.• The final author version and the galley proof are versions of the publication after peer review.• The final published version features the final layout of the paper including the volume, issue and page numbers. Link to publicationCitation for published version (APA): Gheorghita, S. V., Palkovic, M., Hamers, J., Vandecappelle, A., Mamagkakis, S., Basten, T., ... Bosschere, . System scenario based design of dynamic embedded systems. (ES reports; Vol. 2007-06). Eindhoven: Technische Universiteit Eindhoven. General rightsCopyright and moral rights for the publications made accessible in the public portal are retained by the authors and/or other copyright owners and it is a condition of accessing publications that users recognise and abide by the legal requirements associated with these rights.• Users may download and print one copy of any publication from the public portal for the purpose of private study or research.• You may not further distribute the material or use it for any profit-making activity or commercial gain • You may freely distribute the URL identifying the publication in the public portal ? Take down policyIf you believe that this document breaches copyright please contact us providing details, and we will remove access to the work immediately and investigate your claim. In the past decade, real-time embedded systems have become much more complex due to the introduction of a lot of new functionality in one application, and due to running multiple applications concurrently. This increases the dynamic nature of today's applications and systems, and tightens the requirements for their constraints in terms of deadlines and energy consumption. State-of-theart design methodologies try to cope with these novel issues by identifying several most used cases and dealing with them separately, reducing the newly introduced complexity. This paper presents a generic and systematic design-time/run-time methodology for handling the dynamic nature of modern embedded systems, which can be utilized by existing design methodologies to increase their efficiency. It is based on the concept of system scenarios, which group system behaviors that are similar from a multi-dimensional cost perspective, such as resource requirements, delay, and energy consumption, in such a way that the system can be configured to exploit this cost similarity. At design-time, these scenarios are individually optimized. Mechanisms for predicting the current scenario at run-time and for switching between scenarios are ...

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Dealing with dynamism in embedded system design:application scenarios

Gheorghita¹

2007

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Using semi-lagrangian formulations with automatic code generation for environmental modeling

Cited by 3 publications

References 13 publications

A dynamic application-driven data communication strategy

A dynamic application-driven data communication strategy

System-scenario-based design of dynamic embedded systems

Dealing with dynamism in embedded system design:application scenarios

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