[petsc-users] SLEPc/NEP for shell matrice T(lambda) and T'(lambda)

[Jose E. Roman]

I am attaching your example modified with the context stuff.

With the PETSc branch that I indicated, now it works with NLEIGS, for instance:

$ ./test_nep -nep_nleigs_ksp_type gmres -nep_nleigs_pc_type none -rg_interval_endpoints 0.2,1.1 -nep_target 0.8 -nep_nev 5 -n 400 -nep_monitor -nep_view -nep_error_relative ::ascii_info_detail

And also other solvers such as SLP:

$ ./test_nep -nep_type slp -nep_slp_ksp_type gmres -nep_slp_pc_type none -nep_target 0.8 -nep_nev 5 -n 400 -nep_monitor -nep_error_relative ::ascii_info_detail

I will clean the example code an add it as a SLEPc example.

Regards,
Jose


> El 11 oct 2023, a las 17:27, Kenneth C Hall <kenneth.c.hall at duke.edu> escribió:
> 
> Jose,
>  
> Thanks very much for your help with this. Greatly appreciated. I will look at the MR. Please let me know if you do get the Fortran example working.
>  
> Thanks, and best regards,
> Kenneth
> 
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