/usr/lib64/mpich/bin/scotch_dggath
/usr/lib64/mpich/bin/scotch_dgmap
/usr/lib64/mpich/bin/scotch_dgord
/usr/lib64/mpich/bin/scotch_dgpart
/usr/lib64/mpich/bin/scotch_dgscat
/usr/lib64/mpich/bin/scotch_dgtst
/usr/lib/mpich/bin/scotch_dggath
/usr/lib/mpich/bin/scotch_dgmap
/usr/lib/mpich/bin/scotch_dgord
/usr/lib/mpich/bin/scotch_dgpart
/usr/lib/mpich/bin/scotch_dgscat
/usr/lib/mpich/bin/scotch_dgtst
You may install this package on CentOS with
yum
install ptscotch-mpich