Absolutely not! Run your code again with the command line args Barry suggested.
./my.app -ksp_monitor_true_residual -ksp_monitor_singular_value As long as you have called KSPSetFromOptions() (which from your code snippet it seems you have) these options will take effect. On 25 April 2014 00:24, Oo <[email protected]> wrote: > > 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 >> >> . >> > >
