Recommendation of a good poisson solver
Hi,
I was initially using the NSPCG sparse solver for my FVM momentum & poisson eqns. It can solve the momentum eqn very fast. However, I found that the results have some problems with the poisson eqns. Hence, I am now looking for a new sparse solver package to solve my poisson eqn. I am using structured grids with nonuniform grids. Code is in F90 Is it true that the "fast poisson solvers" (mudpack?) or FFT types are faster than the general iteration solvers? Hope that someone can recommend a suitable solver based on my requirement. Thanks! 
Re: Recommendation of a good poisson solver
Oh btw, I forgot to add that I am solving a 9pt poisson eqns.
Thanks 
Re: Recommendation of a good poisson solver
please google: a 9point multigrid elliptic equation solver "mgd9v"

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