Configure PETSC again?
------------------ Original ------------------ From: "Dave May";<[email protected]>; Send time: Friday, Apr 25, 2014 6:20 AM To: "Oo "<[email protected]>; Cc: "Barry Smith"<[email protected]>; "Matthew Knepley"<[email protected]>; "petsc-users"<[email protected]>; Subject: Re: [petsc-users] Convergence_Eigenvalues_k=3 On the command line On 25 April 2014 00:11, Oo <[email protected]> wrote: Where should I put "-ksp_monitor_true_residual -ksp_monitor_singular_value " ? Thanks, Meng ------------------ Original ------------------ From: "Barry Smith";<[email protected]>; Date: Apr 25, 2014 To: "Matthew Knepley"<[email protected]>; Cc: "Oo "<[email protected]>; "petsc-users"<[email protected]>; Subject: Re: [petsc-users] Convergence_Eigenvalues_k=3 There are also a great deal of ??bogus?? numbers that have no meaning and many zeros. Most of these are not the eigenvalues of anything. Run the two cases with -ksp_monitor_true_residual -ksp_monitor_singular_value and send the output Barry On Apr 24, 2014, at 4:53 PM, Matthew Knepley <[email protected]> wrote: > On Thu, Apr 24, 2014 at 12:57 PM, Oo <[email protected]> wrote: > > Hi, > > For analysis the convergence of linear solver, > I meet a problem. > > One is the list of Eigenvalues whose linear system which has a convergence > solution. > The other is the list of Eigenvalues whose linear system whose solution does > not converge (convergenceReason=-3). > > These are just lists of numbers. It does not tell us anything about the > computation. What is the problem you are having? > > Matt > > Do you know what kind of method can be used to obtain a convergence solution > for our non-convergence case? > > Thanks, > > Meng > > > > -- > 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 .
