performance measurements

Each table row shows performance measurements for this Python 2 program with a particular command-line input value N.

 N  CPU secs Elapsed secs Memory KB Code B ≈ CPU Load
6,000,000152.7883.777,1001192  44% 45% 42% 39%

Read the ↓ make, command line, and program output logs to see how this program was run.

Read chameneos-redux benchmark to see what this program should do.

 notes

 chameneos-redux Python 2 program source code

# The Computer Language Benchmarks Game
# http://benchmarksgame.alioth.debian.org/
# contributed by Daniel Nanz 2008-04-10
# 2to3

import sys
import thread
import time

# colors and matching
creature_colors = ['blue', 'red', 'yellow']

def complement(c1, c2):

    if c1 == c2: return c1
    if c1 == 'blue':
        if c2 == 'red': return 'yellow'
        return 'red'
    if c1 == 'red':
        if c2 == 'blue': return 'yellow'
        return 'blue'
    if c2 == 'blue': return 'red'
    return 'blue'


compl_dict = dict(((c1, c2), complement(c1, c2))
                  for c1 in creature_colors
                  for c2 in creature_colors)


def check_complement(colors=creature_colors, compl=compl_dict):

    for c1 in colors:
        for c2 in colors:
            print('%s + %s -> %s' % (c1, c2, compl[(c1, c2)]))
    print('')


# reporting
def spellout(n):
    
    numbers = ['zero', 'one', 'two', 'three', 'four',
               'five', 'six', 'seven', 'eight', 'nine']
    return ' ' + ' '.join(numbers[int(c)] for c in str(n))


def report(input_zoo, met, self_met):

    print(' ' + ' '.join(input_zoo))
    for m, sm in zip(met, self_met):
        print(str(m) + spellout(sm))
    print(spellout(sum(met)) + '\n')


# the zoo
def creature(my_id, venue, my_lock_acquire, in_lock_acquire, out_lock_release):

    while True:
        my_lock_acquire()   # only proceed if not already at meeting place
        in_lock_acquire()   # only proceed when holding in_lock
        venue[0] = my_id    # register at meeting place
        out_lock_release()  # signal "registration ok"


def let_them_meet(meetings_left, input_zoo,
                  compl=compl_dict, allocate=thread.allocate_lock):
    # prepare
    c_no = len(input_zoo)
    venue = [-1]
    met = [0] * c_no
    self_met = [0] * c_no
    colors = input_zoo[:]
    
    in_lock = allocate()
    in_lock_acquire = in_lock.acquire     # function aliases
    in_lock_release = in_lock.release     # (minor performance gain)
    in_lock_acquire()
    out_lock = allocate()
    out_lock_release = out_lock.release
    out_lock_acquire = out_lock.acquire
    out_lock_acquire()
    locks = [allocate() for c in input_zoo]
    
    # let creatures wild
    for ci in range(c_no):
        args = (ci, venue, locks[ci].acquire, in_lock_acquire, out_lock_release)
        new = thread.start_new_thread(creature, args)
    time.sleep(0.05)     # to reduce work-load imbalance
    
    in_lock_release()   # signal "meeting_place open for registration"
    out_lock_acquire()  # only proceed with a "registration ok" signal
    id1 = venue[0]
    while meetings_left > 0:
        in_lock_release()
        out_lock_acquire()
        id2 = venue[0]
        if id1 != id2:
            new_color = compl[(colors[id1], colors[id2])]
            colors[id1] = new_color
            colors[id2] = new_color
            met[id1] += 1
            met[id2] += 1
        else:
            self_met[id1] += 1
            met[id1] += 1
        meetings_left -= 1
        if meetings_left > 0:
            locks[id1].release()  # signal "you were kicked from meeting place"
            id1 = id2
        else:
            report(input_zoo, met, self_met)

           
def chameneosiate(n):

    check_complement()
    let_them_meet(n, ['blue', 'red', 'yellow'])
    let_them_meet(n, ['blue', 'red', 'yellow', 'red', 'yellow',
                      'blue', 'red', 'yellow', 'red', 'blue'])
    #print ''


chameneosiate(int(sys.argv[1]))       

 make, command-line, and program output logs

Wed, 06 Jun 2018 09:23:13 GMT

COMMAND LINE:
/usr/bin/python2 chameneosredux.python 6000000

PROGRAM OUTPUT NOT CHECKED:
blue + blue -> blue
blue + red -> yellow
blue + yellow -> red
red + blue -> yellow
red + red -> red
red + yellow -> blue
yellow + blue -> red
yellow + red -> blue
yellow + yellow -> yellow

 blue red yellow
3977166 zero
4042080 zero
3980754 zero
 one two zero zero zero zero zero zero

 blue red yellow red yellow blue red yellow red blue
1167534 zero
1185634 zero
1211122 zero
1226227 zero
1232018 zero
1195700 zero
1195188 zero
1197564 zero
1203902 zero
1185111 zero
 one two zero zero zero zero zero zero

Revised BSD license

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