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

[Lisandro Dalcin]

The new builds are up. Jose added instructions in the SLEPc FAQ. Could you
try again?

Regards,

On Mon, 4 Oct 2021 at 16:13 Yelyzaveta Velizhanina <velizhaninae at gmail.com>
wrote:

> I see. Thanks, much appreciated.
>
>
>
> Best regards,
>
> Yelyzaveta Velizhanina.
>
>
>
> *From: *Jose E. Roman <jroman at dsic.upv.es>
> *Date: *Monday, 4 October 2021 at 15:10
> *To: *Yelyzaveta Velizhanina <velizhaninae at gmail.com>
> *Cc: *petsc-users at mcs.anl.gov <petsc-users at mcs.anl.gov>
> *Subject: *Re: [petsc-users] Eigenvalues always converge to zero when
> using slepc4py-complex
>
> 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.
>
-- 
Lisandro Dalcin
============
Senior Research Scientist
Extreme Computing Research Center (ECRC)
King Abdullah University of Science and Technology (KAUST)
http://ecrc.kaust.edu.sa/
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