Query related to PDSYEV and PZHEEV

barkataki__pranay — Tue, 14 Aug 2018 11:40:18 GMT

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.

Hi Pranay,

Konstantin_A_Intel — Thu, 16 Aug 2018 15:08:40 GMT

Hi Pranay,

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

Regards,

Konstantin

topic Query related to PDSYEV and PZHEEV in Intel® oneAPI Math Kernel Library

Query related to PDSYEV and PZHEEV

Hi Pranay,