performance measurements

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

 N  CPU secs Elapsed secs Memory KB Code B ≈ CPU Load
5,000,0002.031.57429,792407  18% 19% 99% 2%
5,000,0002.031.59430,252407  17% 20% 99% 1%
5,000,0001.951.57429,776407  85% 33% 1% 12%

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

 thread-ring Graal #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

Wed, 22 Jan 2020 19:18:57 GMT

COMMAND LINE:
/usr/lib/jvm/java-8-graalvm/bin/graalpython threadring.graal-3.graal 5000000

PROGRAM OUTPUT:
181

Please note: This Python implementation is in the very early stages, and can run little more than basic benchmarks at this point.

Revised BSD license

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