new_contents: import numpy as np
  import gnumpy as gp
  import time
  
  size = 1000
  
  na = np.random.randn(size, size)
  nb = np.random.randn(size, size)
  
  start_t = time.time()
  a = gp.garray(na)
  b = gp.garray(nb)
  end_t = time.time()
  
  print('Initialization time: %f' % (end_t - start_t))
  
  for i in range(4):
  
      start_t = time.time()
      res = na * nb
      end_t = time.time()
  
      print('Numpy time: %f' % (end_t - start_t))
  
      start_t = time.time()
      res = a * b
      end_t = time.time()
  
      print('GPU time: %f' % (end_t - start_t))
  
      print("\n------------------------\n")
  
  
subject: add tests