Section: New Software and Platforms

GENFIELD

Keywords: Hydrogeology - Algorithm - Heterogeneity

Scientific Description: GENFIELD implements a parallel version of the algorithm initially proposed by [E. Pardo-Iguzquiza and M. Chica-Olmo, Mathematical Geology, 25(2):177-217, 1993].

Functional Description: GENFIELD allows the generation of gaussian correlated fields. It is based on the circulant embedding method. Parallelism is implemented using MPI communications. GENFIELD is used in hydrogeology to model natural fields, like hydraulic conductivity or porosity fields.

News Of The Year: In 2018, we have performed scaling tests on ADA cluster. They have revealed that the symmetry of the phases required by this algorithm penalized a lot the parallel efficiency of GENFIELD (cf poster hal-01960444, version 1). We have decided to stop the development of GENFIELD. In 2018, we have developed a complete new software (cf BIL Inria ParaCIRCE) based on another algorithm initially proposed by [C. R. Dietrich and G. N. Newsam. A fast and exact method for multidimensional gaussian stochastic simulations. Water Resources Research, 29(8):2861-2869, 1993].

• Participants: Géraldine Pichot, Simon Legrand, Grégoire Lecourt, Jean-Raynald De Dreuzy and Jocelyne Erhel

• Contact: Géraldine Pichot

• Publications: GENFIELD: A parallel software for the generation of stationary Gaussian random fields - Algorithms for stationary Gaussian random field generation

• URL: https://gitlab.inria.fr/slegrand/Genfield_dev