Hello Lisandro, I am testing EPS for a random non-Hermitian complex matrix in shift-invert mode and comparing with SciPy’s wrapper of Lapack – seems to be working perfectly. Thanks.
Regards, Yelyzaveta. From: Lisandro Dalcin <dalc...@gmail.com> Date: Wednesday, 6 October 2021 at 20:52 To: Yelyzaveta Velizhanina <velizhani...@gmail.com> Cc: Jose E. Roman <jro...@dsic.upv.es>, petsc-users@mcs.anl.gov <petsc-users@mcs.anl.gov> Subject: Re: [petsc-users] Eigenvalues always converge to zero when using slepc4py-complex 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 <velizhani...@gmail.com<mailto:velizhani...@gmail.com>> wrote: I see. Thanks, much appreciated. Best regards, Yelyzaveta Velizhanina. From: Jose E. Roman <jro...@dsic.upv.es<mailto:jro...@dsic.upv.es>> Date: Monday, 4 October 2021 at 15:10 To: Yelyzaveta Velizhanina <velizhani...@gmail.com<mailto:velizhani...@gmail.com>> Cc: petsc-users@mcs.anl.gov<mailto:petsc-users@mcs.anl.gov> <petsc-users@mcs.anl.gov<mailto:petsc-users@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 > <velizhani...@gmail.com<mailto:velizhani...@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/
