We are solving the Direct Problem of Controlled Source Electromagnetics (CSEM) using finite difference discretization.
Em qua., 8 de nov. de 2023 às 13:22, Jed Brown <[email protected]> escreveu: > What sort of problem are you solving? Algebraic multigrid like gamg or > hypre are good choices for elliptic problems. Sparse triangular solves have > horrific efficiency even on one GPU so you generally want to do your best > to stay away from them. > > "Ramoni Z. Sedano Azevedo" <[email protected]> writes: > > > Hey! > > > > I am using PETSC in Fortran code and we apply the MPI process to > > parallelize the code. > > > > At the moment, the options that have been used are > > -ksp_monitor_true_residual > > -ksp_type bcgs > > -pc_type bjacobi > > -sub_pc_type ilu > > -sub_pc_factor_levels 3 > > -sub_pc_factor_fill 6 > > > > Now, we want to use multiple GPUs and I would like to know if there is a > > better solver and preconditioner pair to apply in this case. > > > > Yours sincerely, > > Ramoni Z. S . Azevedo >
