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It appears my setup doesn't allow me to use versions > 3.17.4, unfortunately (I believe I'll need to speak to admin for this).</div>
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Best,</div>
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Peder</div>
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<div id="divRplyFwdMsg" dir="ltr"><font face="Calibri, sans-serif" style="font-size:11pt" color="#000000"><b>Fra:</b> Barry Smith <bsmith@petsc.dev><br>
<b>Sendt:</b> 18. januar 2024 19:29<br>
<b>Til:</b> Peder Jørgensgaard Olesen <pjool@dtu.dk><br>
<b>Cc:</b> petsc-users@mcs.anl.gov <petsc-users@mcs.anl.gov><br>
<b>Emne:</b> Re: [petsc-users] ScaLAPACK EPS error</font>
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Looks like you are using an older version of PETSc. Could you please switch to the latest and try again and send same information if that also fails.
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<div> Barry</div>
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<div>On Jan 18, 2024, at 12:59 PM, Peder Jørgensgaard Olesen via petsc-users <petsc-users@mcs.anl.gov> wrote:</div>
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Hello,</div>
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I need to determine the full set of eigenpairs to a rather large (N=16,000) dense Hermitian matrix. I've managed to do this using SLEPc's standard Krylov-Schur EPS, but I think it could be done more efficiently using ScaLAPACK. I receive the following error
when attempting this. As I understand it, descinit is used to initialize an array, and the variable in question designates the leading dimension of the array, for which it seems an illegal value is somehow passed.</div>
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I know ScaLAPACK is an external package, but it seems as if the error would be in the call from SLEPc. Any ideas as to what could cause this?</div>
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Thanks,</div>
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Peder</div>
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Error message (excerpt):</div>
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PETSC ERROR: #1 MatConvert_Dense_ScaLAPACK() at [...]/matscalapack.c:1032</div>
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PETSC ERROR: #2 MatConvert at [...]/matrix.c:4250</div>
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PETSC ERROR: #3 EPSSetUp_ScaLAPACK() at [...]/scalapack.c:47</div>
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PETSC ERROR: #4 EPSSetUp() at [...]/epssetup.c:323</div>
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<span style="letter-spacing:normal; font-family:Aptos,Aptos_EmbeddedFont,Aptos_MSFontService,Calibri,Helvetica,sans-serif; font-size:16px; background-color:rgb(255,255,255); font-weight:400">PETSC ERROR: #5 EPSSolve at [...]/epssolve.c:134</span></div>
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PETSC ERROR: ------ Error message ------</div>
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PETSC ERROR: Error in external library</div>
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<span style="letter-spacing:normal; font-family:Aptos,Aptos_EmbeddedFont,Aptos_MSFontService,Calibri,Helvetica,sans-serif; font-size:16px; background-color:rgb(255,255,255); font-weight:400">PETSC ERROR: Error in ScaLAPACK subroutine descinit: info=-9</span></div>
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<span style="letter-spacing:normal; font-family:Aptos,Aptos_EmbeddedFont,Aptos_MSFontService,Calibri,Helvetica,sans-serif; font-size:16px; background-color:rgb(255,255,255); font-weight:400">Log file (excerpt):</span></div>
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<span style="letter-spacing:normal; font-family:Aptos,Aptos_EmbeddedFont,Aptos_MSFontService,Calibri,Helvetica,sans-serif; font-size:16px; background-color:rgb(255,255,255); font-weight:400">{ 357, 0}: On entry to DESCINIT parameter number 9 had an illegal
value</span></div>
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<span style="letter-spacing:normal; font-family:Aptos,Aptos_EmbeddedFont,Aptos_MSFontService,Calibri,Helvetica,sans-serif; font-size:16px; background-color:rgb(255,255,255); font-weight:400">[and a few hundred lines similar to this]</span></div>
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