www.Autodiff.org - Publication: Coupling Tangent-Linear and Adjoint Models

Coupling Tangent-Linear and Adjoint Models

- Part of a collection -

Area
Oceanography

Author(s)
Uwe Naumann , Patrick Heimbach

Published in
Computational Science and Its Applications -- ICCSA 2003, Proceedings of the International Conference on Computational Science and its Applications, Montreal, Canada, May 18--21, 2003. Part II

Editor(s)
V. Kumar, M. L. Gavrilova, C. J. K. Tan, P. L'Ecuyer

Year
2003

Publisher
Springer

Abstract
We consider the solution of a (generalized) eigenvalue problem arising in physical oceanography that involves the evaluation of both the tangent-linear and adjoint versions of the underlying numerical model. Two different approaches are discussed. First, tangent-linear and adjoint models are generated by the software tool TAF and used separately. Second, the two models are combined into a single derivative model based on optimally preaccumulated local gradients of all scalar assignments. The coupled tangent-linear / adjoint model promises to be a good solution for small or medium sized problems. However, the simplicity of the example code at hand prevents us from observing considerable run time differences between the two approaches.

Cross-References
Kumar2003CSa

AD Tools
TAF

BibTeX
@INPROCEEDINGS{
         Naumann2003CTL,
       author = "Uwe Naumann and Patrick Heimbach",
       title = "Coupling Tangent-Linear and Adjoint Models",
       booktitle = "Computational Science and Its Applications -- ICCSA~2003, Proceedings of the
         International Conference on Computational Science and its Applications, Montreal, Canada,
         May~18--21, 2003. Part~II",
       editor = "V. Kumar and M. L. Gavrilova and C. J. K. Tan and P. {L'Ecuyer}",
       abstract = "We consider the solution of a (generalized) eigenvalue problem arising in physical
         oceanography that involves the evaluation of both the tangent-linear and adjoint versions of the
         underlying numerical model. Two different approaches are discussed. First, tangent-linear and
         adjoint models are generated by the software tool TAF and used separately. Second, the two models
         are combined into a single derivative model based on optimally preaccumulated local gradients of all
         scalar assignments. The coupled tangent-linear / adjoint model promises to be a good solution for
         small or medium sized problems. However, the simplicity of the example code at hand prevents us from
         observing considerable run time differences between the two approaches.",
       volume = "2668",
       series = "Lecture Notes in Computer Science",
       publisher = "Springer",
       pages = "95--104",
       address = "Berlin",
       reference = "http://www.autodiff.org/?module=Workshops&submenu=iccsa03",
       ad_area = "Oceanography",
       ad_tools = "TAF",
       year = "2003",
       crossref = "Kumar2003CSa"
}

back

autodiff.org
Username:
Password: