Re: [eigen] BiCGSTAB iteration count

[Gael Guennebaud <gael.guennebaud@xxxxxxxxx>]

solver.iterations() == 0 means that the initial guess was good enough, and so no iteration occurred at all.

gael

On Tue, Jul 7, 2015 at 9:00 PM, Parsiad Azimzadeh <parsiad.azimzadeh@xxxxxxxxx> wrote:

Hi,

I am using Eigen 3.2.4. Sometimes, the BiCGSTAB solver gives me solver.iterations() == 0 even when solver.info() == Eigen::Success.

Is this because iterations() returns the number of iterations minus one?

If this is unexpected behaviour, I can create a minimal example for the mailing list.

Thanks,

Parsiad