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Query related to PDSYEV and PZHEEV

barkataki__pranay
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 I have used the SCALAPACK routines PDSYEV and PZHEEV for diagonalization of symmetric and Hermitian matrices respectively. Using these routines to diagonalize a square matrix in a square process grid (for ex.- 2 x 2, 4 x 4) I have got correct eigenvalues and eigenvectors. The problem arises when I choose a rectangular process grid (for ex.- 2 x 4, 4 x 12 ) I get incorrect eigenvalues and eigenvectors. I wanted to know whether the SCALAPACK routines PDSYEV and PZHEEV can be applied to rectangular process grid or not.

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Konstantin_A_Intel
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Hi Pranay,

Symmetric eigensolver drivers in ScaLAPACK support rectangular process grid. Can you please provide a reproducer of the problem?

Regards,

Konstantin

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