Efficient Parallel Preconditioned Conjugate Gradient Solver on GPU for FE Modeling of Electromagnetic Fields in Highly Dissipative Media

Ana Flavia Peixoto de Camargos (1, 2) , Viviane Cristine Silva (2) , Jean-Michel Guichon (3) , Gérard Meunier (3)

1 CEFET-MG
2 Escola Politecnica
3 G2ELab - Laboratoire de Génie Electrique de Grenoble

We present a performance analysis of a parallel implementation of preconditioned conjugate gradient solvers using graphic processing units with compute unified device architecture programming model. The solvers were optimized for the solution of sparse systems of equations arising from finite-element analysis of electromagnetic phenomena involved in the diffusion of underground currents in both steady state and under time-harmonic current excitation. We used both shifted incomplete Cholesky factorization and incomplete LU factorization as preconditioners. The results show a significant speedup using the graphics processing unit compared with a serial CPU implementation.

Mots clés: FEMs; graphic processing unit (GPU); linear systems; performance analysis

Domaines: Energie électrique

Ana Flavia Peixoto de Camargos, Viviane Cristine Silva, Jean-Michel Guichon, Gérard Meunier. Efficient Parallel Preconditioned Conjugate Gradient Solver on GPU for FE Modeling of Electromagnetic Fields in Highly Dissipative Media. IEEE Transactions on Magnetics, 2014, 50 (2), pp.ID 7014004. ⟨10.1109/TMAG.2013.2285091⟩. ⟨hal-01271322⟩