Re: [deal.II] Massively parallel & inverse matrix solver

Dear Hermes, The equivalent classes to SparseDirectUMFPACK for parallel linear algebra would be: - TrilinosWrappers::SolverDirect : You can choose the implementation through the AdditionalData

Re: [deal.II] Massively parallel & inverse matrix solver

Thank you for the answer. I am solving for real and imaginary parts. What solver would you suggest using? Is it any example in any of the steps? Thank you Hermes. El mié, 1 sept 2021 a las 20:11, Daniel Arndt () escribió: > Hermes, > > The SparseDirectUMFPACK solver doesn't work with MPI

Re: [deal.II] Massively parallel & inverse matrix solver

Hermes, The SparseDirectUMFPACK solver doesn't work with MPI parallel matrices. You will need to find another solver based on the matrix class you are using. Standard choices would be GMRES or CG but I am assuming that your linear system might also be non-symmetric or indefinite. Best, Daniel

[deal.II] Massively parallel & inverse matrix solver

Dear all, I am trying to solve a similar problem as step-29 but including the massive parallel solution as presented in step-40. I would like to ask how the solve() function would be in this case. In step-29: //LU decomposition and inverse matrix SparseDirectUMFPACK A_direct;