Hi,
I use PETSC to solve the unsymmetrical matrix which is formed by the
incompressible SPH method. Due to the scale of the problem is huge, I want to
choose the best and the most efficient solver. I have checked the time-cost of
the pre-conditioner PCGAMG together with the solvers like KSPCGS, KSPGMRES,
KSPBCGS, KSPTFQMR and KSPGCR, but the difference between them is really really
small. Except comparing the time-cost, are there any other properties that I
can compare in order to find the most efficient solver? Are there any
suggestions about choosing the best solver? Besides, I want to further speed
the solving process up, are there any suggestions?
Thank you very much!
Daye
