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#!/usr/bin/env python
"""
A simple example of serial computation using map-style processing.
See the simple_pmap.py program for the corresponding parallel version.
"""
import time
#import random
# Array size.
N = 10
delay = 1
# Work function.
def calculate(t):
"A supposedly time-consuming calculation on 't'."
i, j = t
#time.sleep(delay * random.random())
time.sleep(delay)
return i * N + j
# Main program.
if __name__ == "__main__":
t = time.time()
# Initialise an array.
sequence = []
for i in range(0, N):
for j in range(0, N):
sequence.append((i, j))
# Perform the work.
results = map(calculate, sequence)
# Show the results.
for i in range(0, N):
for result in results[i*N:i*N+N]:
print result,
print
print "Time taken:", time.time() - t
# vim: tabstop=4 expandtab shiftwidth=4
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