cmp_numpy.py

#!/usr/bin/env python

import time
import math
import numpy as npy

m, n, o = 10, 1000, 10000
shape = [m,n,o]

def f00 () :
  t0 = time.time()
  x = npy.empty (shape)
  t1 = time.time()
  t = t1 - t0
  print t

def f01 () :
  t0 = time.time()
  x = npy.zeros (shape)
  t1 = time.time()
  t = t1 - t0
  print t

def f02 () :
  t0 = time.time()
  x = npy.ones (shape)
  t1 = time.time()
  t = t1 - t0
  print t

def f03 () :
  t0 = time.time()
  x = npy.empty (shape)
  x.fill (3.5)
  t1 = time.time()
  t = t1 - t0
  print t

def f04 () :
  x = npy.empty (shape)
  x.fill (3.5)
  y = npy.empty (shape)
  y.fill (5.5)
  t0 = time.time()
  x + y
  t1 = time.time()
  t = t1 - t0
  print t

def f05 () :
  x = npy.empty (shape)
  x.fill (3.5)
  y = npy.empty (shape)
  y.fill (5.5)
  t0 = time.time()
  x * y
  t1 = time.time()
  t = t1 - t0
  print t

def f06 () :
  x = npy.empty (shape)
  x.fill (3.5)
  t0 = time.time()
  x + 2
  t1 = time.time()
  t = t1 - t0
  print t

def f07 () :
  x = npy.empty (shape)
  x.fill (3.5)
  t0 = time.time()
  abs (x)
  t1 = time.time()
  t = t1 - t0
  print t

def f08 () :
  import math
  x = npy.empty (shape)
  x.fill (3.5)
  y = npy.empty (shape)
  t0 = time.time()
  for i in range (m):
    for j in range (n):
      for k in range (o):
        y[i,j,k] = (math.sin (x[i,j,k])) + 1
  t1 = time.time()
  t = t1 - t0
  print t

def f09 () :
  x = npy.empty (shape)
  x.fill (3.5)
  t0 = time.time()
  for i in range (m):
    for j in range (n):
      for k in range (o):
        x[i,j,k] > 0
  t1 = time.time()
  t = t1 - t0
  print t

def f10 () :
  x = npy.empty (shape)
  x.fill (3.5)
  y = npy.empty (shape)
  y.fill (5.5)
  t0 = time.time()
  npy.less (x, y)
  t1 = time.time()
  t = t1 - t0
  print t
  
def f95 () :
  x = npy.empty (shape)
  t0 = time.time()
  for a in npy.nditer(x, op_flags=['readwrite']):
    a[...] = (math.sin (a)) ** 2
  t1 = time.time()
  t = t1 - t0
  print t

def f06 () :
  t0 = time.time()
  b = x[0:8:2,0:-1:2,-1:0:-1].copy()
  t1 = time.time()
  t = t1 - t0
  print t