Center for Computing Research (CCR)
Center for Computing Research (CCR)

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Viscoelastic material inversion using Sierra-SD and ROL

Walsh, Timothy; Aquino, Wilkins; Ridzal, Denis; Kouri, Drew P.; Van Bloemen Waanders, Bart; Urbina, Angel U.

In this report we derive frequency-domain methods for inverse characterization of the constitutive parameters of viscoelastic materials. The inverse problem is cast in a PDE-constrained optimization framework with efficient computation of gradients and Hessian vector products through matrix free operations. The abstract optimization operators for first and second derivatives are derived from first principles. Various methods from the Rapid Optimization Library (ROL) are tested on the viscoelastic inversion problem. The methods described herein are applied to compute the viscoelastic bulk and shear moduli of a foam block model, which was recently used in experimental testing for viscoelastic property characterization.

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TYPE SAND Report YEAR 2014
DOIOSTI

Programming Abstractions for Data Locality

Tate, Adrian; Kamil, Amir; Dubey, Anshu; Groblinger, Armin; Chamberlain, Brad; Goglin, Brice; Edwards, Harold C.; Newburn, Chris J.; Padua, David; Unat, Didem; Jeannot, Emmanuel; Hannig, Frank; Tobias, Gysi; Ltaief, Hatem; Sexton, James; Labarta, Jesus; Shalf, John; Fuerlinger, Karl; Brien, Leonidas'; Linardakis, Leonidas; Besta, MacIej; Sawley, Marie-Christine; Abraham, Mark; Bianco, Mauro; Pericas, Miquel; Maruyama, Naoya; Kelly, Paul H.J.; Messmer, Peter; Ross, Robert B.; Ciedat, Romain; Matsuoka, Satoshi; Schulthess, Thomas; Hoefler, Torsten; Leung, Vitus J.

The goal of the workshop and this report is to identify common themes and standardize concepts for locality-preserving abstractions for exascale programming models.

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TYPE Other Report YEAR 2014
DOIOSTI
Results 7951–8000 of 12,511
Results 7951–8000 of 12,511
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