http://www.netlib.org/scalapack/slug/node28.html#SECTION04230000000000000000
Details of Example Program #1
Figure 2.1
wrong
[ s c
-s c
------
-s -c
-s -c
------
-s -c
-s -c
------
-s -c
-s -c
------
-s -c ]
correct
[ s c
-s c
------
-s -c
-s -c
------
-s -c
-s -c
------
-s -c
-s c
------
-s -c ]
