Error when i run a very simple program with gpycnn

[KiroSummer]

When I try to use gpu, I get a error "Segmentation fault (core dumped)"
My code is here, very simple:

#!/usr/bin/python
#coding: utf-8
  
import gpycnn as G
import pycnn as C
import numpy as np
  
model = G.Model()
model.add_parameters('w', (2, 2))
 
w = model['w']
matrix = np.random.uniform(-0.01, 0.01, w.shape())
w.load_array(matrix)

My code use the pycnn is ok, but when I convert to gpycnn, it will crash and will catch such problem
"Segmentation fault (core dumped)"

By the way, the line with load_ array can cause the error.
Did I use gpu model parameters with the wrong function?

Could you help me deal with it?
Thank you!