On Tue, Nov 1, 2011 at 2:13 PM, Jed Brown <[email protected]> wrote: > On Tue, Nov 1, 2011 at 14:06, Jose E. Roman <[email protected]> wrote: > >> >> El 01/11/2011, a las 20:55, Roy Stogner escribió: >> >> > >> > On Tue, 1 Nov 2011, Jed Brown wrote: >> > >> >> Kyunghoon, the error messages say petsc-3.1p8, but the configure line >> makes it look like you are trying to use petsc-3.2. Which >> >> is it? I assume that Roy reproduced with a clean petsc-3.2/slepc-3.2 >> configuration. >> > >> > Actually, no - I just built against the newest versions we had lying >> > around: petsc-3.1-p5 and slepc-3.1-p4. I'd be happy to upgrade and >> > test the latest if it'd be helpful with any bug hunting, though. >> > --- >> > Roy >> >> >> The error "IPNorm: The inner product is not well defined!" is usually due >> to the fact that the B matrix of the eigenproblem is not positive (semi) >> definite. Are you sure your eigenproblem is definite? In that case, I would >> be interested in trying these matrices to track down the problem. >> > > It is supposed to be a finite element generalized eigenproblem where A is > the Laplacian and B is a mass matrix (using Q_1 quadrilateral elements on > [-1,1]^2).
I actually don't see where we define boundary conditions on either of the matrices in ex17. So does that mean the problem is indefinite? -- John ------------------------------------------------------------------------------ RSA® Conference 2012 Save $700 by Nov 18 Register now! http://p.sf.net/sfu/rsa-sfdev2dev1 _______________________________________________ Libmesh-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/libmesh-users
