On Tue, Nov 27, 2007 at 04:30:43PM +0100, Thomas Witkowski wrote: > Hi, > > I want to use dolfin for solving eigenvalue problems. I've installed > dolfin 0.7.1 with petsc and slepc. The matrix, for which the eigenvalues > should be computed, is defined in the following way: > > PETScMatrix C(TS, TS); > C.set(.....); > C.set(.....);
Try calling C.apply(); after the set functions. PETSc needs to "assemble" the changes you made when calling set() before you can do anything with the matrix. -- Anders > Now, when I'm trying to solve the problem with: > > SLEPcEigenvalueSolver esolver; > esolver.solve(C); > > I get the following error message: > > > [0]PETSC ERROR: --------------------- Error Message > ------------------------------------ > [0]PETSC ERROR: Object is in wrong state! > [0]PETSC ERROR: Not for unassembled matrix! > [0]PETSC ERROR: > ------------------------------------------------------------------------ > [0]PETSC ERROR: Petsc Release Version 2.3.3, Patch 8, Fri Nov 16 > 17:03:40 CST 2007 HG revision: 414581156e67e55c761739b0deb119f7590d0f4b > [0]PETSC ERROR: See docs/changes/index.html for recent updates. > [0]PETSC ERROR: See docs/faq.html for hints about trouble shooting. > [0]PETSC ERROR: See docs/index.html for manual pages. > [0]PETSC ERROR: > ------------------------------------------------------------------------ > [0]PETSC ERROR: ./mass on a linux-gnu named ... by witkowsk Tue Nov 27 > 16:17:51 2007 > [0]PETSC ERROR: Libraries linked from > /u/witkowski/local/petsc-2.3.3-p8/lib/linux-gnu-cxx > [0]PETSC ERROR: Configure run at Tue Nov 27 11:24:27 2007 > [0]PETSC ERROR: Configure options --with-mpi-dir=/u/witkowski/local > --with-clanguage=cxx --download-hypre=yes --with-hypre=1 > --download-umfpack=yes --with-umfpack=1 --with-shared=0 > [0]PETSC ERROR: > ------------------------------------------------------------------------ > [0]PETSC ERROR: MatMult() line 1616 in src/mat/interface/matrix.c > [0]PETSC ERROR: STApply_Shift() line 30 in src/st/impls/shift/shift.c > [0]PETSC ERROR: STApply() line 49 in src/st/interface/stsolve.c > [0]PETSC ERROR: EPSBasicArnoldi() line 86 in src/eps/impls/arnoldi/arnoldi.c > [0]PETSC ERROR: EPSSolve_KRYLOVSCHUR() line 91 in > src/eps/impls/krylovschur/krylovschur.c > [0]PETSC ERROR: EPSSolve() line 71 in src/eps/interface/solve.c > Eigenvalue solver (krylovschur) converged in 1 iterations. > > > What does it meen? And what have I made wrong? > > Regards, > > Thomas > _______________________________________________ > DOLFIN-dev mailing list > [email protected] > http://www.fenics.org/mailman/listinfo/dolfin-dev _______________________________________________ DOLFIN-dev mailing list [email protected] http://www.fenics.org/mailman/listinfo/dolfin-dev
