On Thu, Apr 17, 2014 at 2:48 PM, Xiao, Jianjun (IKET) <[email protected]>wrote:
> Dear developers, > > I find the words below in PETSc FAQ. > > "Most commonly, you are using a preconditioner which behaves differently > based upon the number of processors, such as Block-Jacobi which is the > PETSc default." > > I am testing the fidelity of my code. I don't want to be disturbed by the > different numbers of procs. I know Block-Jacobi may be fast. But currently > I don't care the speed. I need a preconditioner which behaves exactly the > same with various procs. Which preconditioner should I use? > Always use a direct solver for fidelity tests, like SuperLU or MUMPS. Matt > Thank you. > > Best regards > JJ -- What most experimenters take for granted before they begin their experiments is infinitely more interesting than any results to which their experiments lead. -- Norbert Wiener
