xxx@xxx:~/Workspace/experimental/trash$ python testsg.py
creating buffer_info...
setting buff...
shape...
strides...
frombuffer 0x12a1a50 0x1139e90 0x1139e90
creating buffer_info...
setting buff...
shape...
strides...
frombuffer 0x12b5e20 0x16a1e50 0x16a1e50
[[-1.  2.]
 [-1.  4.]]
[[-1.  2.]
 [-1.  4.]]
[[ 1.  2.]
 [ 3.  4.]]
[[-1.  2.]
 [-1.  4.]]
[[-1.  2.]
 [-1.  4.]]