Dr. habil. Georg Bergner
Room: Abb 202
There is an undocumented bug in the parallel version of ARPACK (PARPACK).
It leads to missing eigenvalues in the computed spectrum.
Thanks to Jaques Bloch I learned about it. I do not know if this bug will be
resolved at some time since it has been present for a while. Since it might
be important for other related studies of eigenvalues of large sparse matrices I have
written a small patch for it. In addition to the patch you can find some scritps that
I have used for the installation of (P)ARPACK in the file below.
Patch and scripts to install parallel ARPACK