SCOTCH: added the sep= flag to the default strategy string, without it, a sequential ("centralized") partitioner is used. After re-compiling PT-SCOTCH it seemed to work for the spinSZ matrices, but more thorough testing is required. Fixes #166 (for now).
SCOTCH: added the sep= flag to the default
strategy string, without it, a sequential ("centralized")
partitioner is used. After re-compiling PT-SCOTCH it seemed
to work for the spinSZ matrices, but more thorough testing is
required. Fixes #166 (for now).

RRZE-HPC/GHOST,RRZE-HPC/GHOST,RRZE-HPC/GHOST,RRZE-HPC/GHOST