Dear Prof. Wolfgang,
Thank you very much for your reply and insight. I will
change the PETSc/SLEPc versions to 3.7.4/3.7.3 and see if that will solve
the issue.
On Wednesday, September 11, 2019 at 10:39:08 AM UTC-7, Pragalv Karki wrote:
>
> Dear deal.II community,
> I am new to deal.II and I had posted a question about
> this same issue yesterday. Perhaps I did not ask it correctly. I have been
> trying to simulate the wave equation on a particular kind of surface (I
> have attached a picture of that surface and the mesh). I created the mesh
> for that surface using gmsh. I was able to simulate the wave equation from
> step-23 on that surface and I am currently working to change the initial
> excitation, density, and tension. I also want to get the eigenfrequencies
> for this surface and as a start, I just wanted to learn how deal.II solves
> eigenspectrum using PETSc and SlEPc from step-36. But, when I try to run
> that tutorial as is it shows the error I have posted below. I thought the
> problem was not having the PETSc and SlEPc libraries so I went ahead and
> installed them but that still does not resolve the issue. Please let me
> know if you have run into this issue before and what you did to solve it.
> Thank you!
>
> THE ERROR message:
>
> *[0]PETSC ERROR: --------------------- Error Message
> --------------------------------------------------------------*
>
> [0]PETSC ERROR: Error in external library
>
> [0]PETSC ERROR: Error in LAPACK subroutine steqr: info=0
>
> [0]PETSC ERROR: See http://www.mcs.anl.gov/petsc/documentation/faq.html for
> trouble shooting.
>
> [0]PETSC ERROR: Petsc Release Version 3.10.0, Sep, 12, 2018
>
> [0]PETSC ERROR: ./step-36 on a named Pragalvs-MacBook-Air.local by
> pragalvkarki Tue Sep 10 15:29:22 2019
>
>
>
> (Lot of unnecessary stuff (I think ) in between these error messages)
>
>
>
> An error occurred in line <182> of file
> </Applications/deal.II.app/Contents/Resources/spack/src/dealii-v9.1.1/source/lac/slepc_solver.cc>
>
> in function
>
> void dealii::SLEPcWrappers::SolverBase::solve(const unsigned int,
> unsigned int *)
>
> The violated condition was:
>
> ierr == 0
>
> Additional information:
>
> An error with error number 76 occurred while calling a SLEPc
> function
>
>
>
>
>
> Thank you for your time,
>
> Pragalv
>
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