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Computer Language Benchmarks Game      [[ Play ]]

- all benchmarks - n-body fannkuch-redux meteor-contest fasta fasta-redux spectral-norm reverse-complement mandelbrot k-nucleotide regex-dna pidigits chameneos-redux thread-ring binary-trees-redux binary-trees - all languages - Ada 2005 GNAT ATS C gcc Clojure C# Mono C++ g++ Dart Erlang HiPE F# Mono Fortran Intel Go Haskell GHC Java 7 Lisp SBCL OCaml Pascal Free Pascal Perl PHP Python 3 Racket Ruby 2.0 Ruby JRuby Scala x86 one core x64 quad-core x86 quad-core x64 one core

 performance measurements

Each table row shows performance measurements for this Python 3 program with a particular command-line input value N.

N	CPU secs	Elapsed secs	Memory KB	Code B	≈ CPU Load
500,000	0.16	0.16	?	270	0% 0% 100% 6%
5,000,000	1.24	1.24	4,556	270	1% 0% 1% 100%
50,000,000	11.97	11.97	4,568	270	0% 0% 0% 100%

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

Read thread-ring benchmark to see what this program should do.

 notes

Python 3.3.1 (default, Apr 11 2013, 12:56:47)
[GCC 4.7.2] on linux

 thread-ring Python 3 #3 program source code

# The Computer Language Benchmarks Game

# http://benchmarksgame.alioth.debian.org/

#

# contributed by Daniel Nanz 2008-03-11


# Coroutines via enhanced generators

# 2to3


import sys
import itertools
      
def main(n = int(sys.argv[1]), n_threads=503, cycle=itertools.cycle):

    def worker(worker_id):
        
        n = 1
        while True:
            if n > 0:
                n = (yield (n - 1))
            else:
                print(worker_id)
                raise StopIteration


    threadRing = [worker(w) for w in range(1, n_threads + 1)]
    for t in threadRing: foo = next(t)           # start exec. gen. funcs

    sendFuncRing = [t.send for t in threadRing]   # speed...

    for send in cycle(sendFuncRing):
        try:
            n = send(n)
        except StopIteration:
            break

main()

 make, command-line, and program output logs

Thu, 11 Apr 2013 22:13:48 GMT

MAKE:
mv threadring.python3-3.python3 threadring.python3-3.py
0.01s to complete and log all make actions

COMMAND LINE:
/usr/local/src/Python-3.3.1/bin/python3.3 threadring.python3-3.py 50000000

PROGRAM OUTPUT:
292

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