On 2/20/25 14:18, David Montiel wrote:
/An error occurred in line <2204> of file <../source/lac/
lapack_full_matrix.cc> in function/
/ void
dealii::LAPACKFullMatrix<number>::compute_eigenvalues_symmetric(number,
number, number, dealii::Vector<OtherNumber>&,
dealii::FullMatrix<number>&) [with number = double]/
/The violated condition was: /
/ info == 0/
/Additional information: /
/ Lapack error in syevx: 1 eigenvectors failed to converge. (You may/
/ need to scale the abs_accuracy according to your matrix norm.)/
//
David:
This is at its core a question about LAPACK and what kinds of matrices
it can compute eigenvalues/eigenvectors of. Have you searched the
internet what that error message means? How big is the matrix, and is it
indeed symmetric?
Best
W.
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