Efficient Parallel Generation of Random Field of Mechanical Properties for Geophysical Application

Luciano de Carvalho Paludo (1) , Victor Bouvier (1) , Régis Cottereau (1) , Didier Clouteau (1)

1 MSSMat - Laboratoire de mécanique des sols, structures et matériaux

We study the generation of random fields applied to problems where the domain is much larger than the characteristic distance of the properties fluctuation. Spectral Representation is used and a variation for isotropic fields is proposed. To improve scalability, a method to divide the domain in independent overlapping subsets is developed. The effectiveness of these modifications will be shown on tests in a 3D seismic waves propagation code running over hundreds of cores. Comparison with other schemes for large scale generation of random fields will also be performed.

Mots clés: s-Random Fields; Gaussian Process; Spectral Representation; High Performance Computing

Domaines: Mécanique [physics]

Luciano de Carvalho Paludo, Victor Bouvier, Régis Cottereau, Didier Clouteau. Efficient Parallel Generation of Random Field of Mechanical Properties for Geophysical Application. 12e Colloque national en calcul des structures, CSMA, May 2015, Giens, France. ⟨hal-01515074⟩