[petsc-users] Eigenvalues always converge to zero when using slepc4py-complex

[Jose E. Roman]

Conda supports complex scalars for petsc4py. However, this is not implemented in slepc4py. Lisandro is trying to get this fixed, so if no issues arise this will be available in a couple of days, with slepc4py-3.16.0.

Jose


> El 3 oct 2021, a las 22:45, Yelyzaveta Velizhanina <velizhaninae at gmail.com> escribió:
> 
> Dear all,
> 
> I am having a problem to get EPS run properly with PETSc and SLEPc build with scalar_value=complex. I am using petsc4py and slepc4py. Installed everything, including PETSc and SLEPc, with conda. While real scalar value build works well, when using the complex one, all the eigenvalues always converge to 0 for any matrix and any solver. I’ve tried running examples given in this repo https://github.com/myousefi2016/slepc4py as well - same outcome, only zero eigenvalues. I am running MacOSX BigSur.
> 
> Will appreciate any help,
> 
> Best regards,
> Yelyzaveta Velizhanina.