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<p class="MsoNormal"><span lang="EN-US">Hello Lisandro,<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">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.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">Regards,<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">Yelyzaveta.<o:p></o:p></span></p>
<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal" style="margin-bottom:12.0pt"><b><span style="font-size:12.0pt;color:black">From:
</span></b><span style="font-size:12.0pt;color:black">Lisandro Dalcin <dalcinl@gmail.com><br>
<b>Date: </b>Wednesday, 6 October 2021 at 20:52<br>
<b>To: </b>Yelyzaveta Velizhanina <velizhaninae@gmail.com><br>
<b>Cc: </b>Jose E. Roman <jroman@dsic.upv.es>, petsc-users@mcs.anl.gov <petsc-users@mcs.anl.gov><br>
<b>Subject: </b>Re: [petsc-users] Eigenvalues always converge to zero when using slepc4py-complex<o:p></o:p></span></p>
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<p class="MsoNormal">The new builds are up. Jose added instructions in the SLEPc FAQ. Could you try again?<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">Regards,<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">On Mon, 4 Oct 2021 at 16:13 Yelyzaveta Velizhanina <<a href="mailto:velizhaninae@gmail.com">velizhaninae@gmail.com</a>> wrote:<o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span lang="EN-US">I see. Thanks, much appreciated.</span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span lang="EN-US"> </span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span lang="EN-US">Best regards,</span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span lang="EN-US">Yelyzaveta Velizhanina.</span><o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"> <o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;margin-bottom:12.0pt"><b><span style="font-size:12.0pt;color:black">From:
</span></b><span style="font-size:12.0pt;color:black">Jose E. Roman <<a href="mailto:jroman@dsic.upv.es" target="_blank">jroman@dsic.upv.es</a>><br>
<b>Date: </b>Monday, 4 October 2021 at 15:10<br>
<b>To: </b>Yelyzaveta Velizhanina <<a href="mailto:velizhaninae@gmail.com" target="_blank">velizhaninae@gmail.com</a>><br>
<b>Cc: </b><a href="mailto:petsc-users@mcs.anl.gov" target="_blank">petsc-users@mcs.anl.gov</a> <<a href="mailto:petsc-users@mcs.anl.gov" target="_blank">petsc-users@mcs.anl.gov</a>><br>
<b>Subject: </b>Re: [petsc-users] Eigenvalues always converge to zero when using slepc4py-complex</span><o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;margin-bottom:12.0pt">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.<br>
<br>
Jose<br>
<br>
<br>
> El 3 oct 2021, a las 22:45, Yelyzaveta Velizhanina <<a href="mailto:velizhaninae@gmail.com" target="_blank">velizhaninae@gmail.com</a>> escribió:<br>
> <br>
> Dear all,<br>
> <br>
> 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
<a href="https://github.com/myousefi2016/slepc4py" target="_blank">https://github.com/myousefi2016/slepc4py</a> as well - same outcome, only zero eigenvalues. I am running MacOSX BigSur.<br>
> <br>
> Will appreciate any help,<br>
> <br>
> Best regards,<br>
> Yelyzaveta Velizhanina.<o:p></o:p></p>
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<p class="MsoNormal">-- <o:p></o:p></p>
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<p class="MsoNormal">Lisandro Dalcin<br>
============<br>
Senior Research Scientist<br>
Extreme Computing Research Center (ECRC)<br>
King Abdullah University of Science and Technology (KAUST)<br>
<a href="http://ecrc.kaust.edu.sa/" target="_blank">http://ecrc.kaust.edu.sa/</a><o:p></o:p></p>
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