On Sat, Apr 24, 2010 at 03:38:42AM -0000, Murtazo Nazarov wrote: > New question #108259 on DOLFIN: > https://answers.launchpad.net/dolfin/+question/108259 > > Hi, > > My solver was working until I recompiled dolfin for some reasons. The Petcs > Krylov solver does not converges: > > Solving linear system of size 4184 x 4184 (PETSc Krylov solver). > terminate called after throwing an instance of 'std::runtime_error' > what(): *** Error: PETSc Krylov solver did not converge (PETSc reason -4). > > However it works well with LUSolver. > > Does anyone had similar problem?
Are you sure it used to converge? We recently changed a warning to an error, so it might be that your old solver didn't converge but you only thought it did. -- Anders
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