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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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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>
<div class="elementToProof"><span style="letter-spacing: normal; font-family: Aptos, Aptos_EmbeddedFont, Aptos_MSFontService, Calibri, Helvetica, sans-serif; font-size: 16px; color: rgb(0, 0, 0); background-color: rgb(255, 255, 255); font-weight: 400;">PETSC
ERROR: Error in ScaLAPACK subroutine descinit: info=-9</span></div>
<div class="elementToProof"><span style="letter-spacing: normal; font-family: Aptos, Aptos_EmbeddedFont, Aptos_MSFontService, Calibri, Helvetica, sans-serif; font-size: 16px; color: rgb(0, 0, 0); background-color: rgb(255, 255, 255); font-weight: 400;">(...)</span></div>
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</span></div>
<div class="elementToProof"><span style="letter-spacing: normal; font-family: Aptos, Aptos_EmbeddedFont, Aptos_MSFontService, Calibri, Helvetica, sans-serif; font-size: 16px; color: rgb(0, 0, 0); background-color: rgb(255, 255, 255); font-weight: 400;">Log
file (excerpt):</span></div>
<div class="elementToProof"><span style="letter-spacing: normal; font-family: Aptos, Aptos_EmbeddedFont, Aptos_MSFontService, Calibri, Helvetica, sans-serif; font-size: 16px; color: rgb(0, 0, 0); background-color: rgb(255, 255, 255); font-weight: 400;">{ 357,
0}: On entry to DESCINIT parameter number 9 had an illegal value</span></div>
<div class="elementToProof"><span style="letter-spacing: normal; font-family: Aptos, Aptos_EmbeddedFont, Aptos_MSFontService, Calibri, Helvetica, sans-serif; font-size: 16px; color: rgb(0, 0, 0); background-color: rgb(255, 255, 255); font-weight: 400;">[and
a few hundred lines similar to this]</span></div>
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