performance measurements
Each table row shows performance measurements for this program with a particular command-line input value N.
| N | CPU secs | Elapsed secs | Memory KB | Code B | ≈ CPU Load |
|---|
Read the ↓ make, command line, and program output logs to see how this program was run.
Read benchmark to see what this program should do.
notes
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
Fri, 09 Sep 2022 06:06:20 GMT
COMMAND LINE:
/usr/bin/python3.12 threadring.python-dev-3.python-dev 5000000
PROGRAM FAILED
PROGRAM OUTPUT:
181
Traceback (most recent call last):
File "/home/dundee/work/pybenchmarks/bencher/tmp/threadring/tmp/threadring.python-dev-3.python-dev", line 22, in worker
raise StopIteration
StopIteration
The above exception was the direct cause of the following exception:
Traceback (most recent call last):
File "/home/dundee/work/pybenchmarks/bencher/tmp/threadring/tmp/threadring.python-dev-3.python-dev", line 34, in <module>
main()
File "/home/dundee/work/pybenchmarks/bencher/tmp/threadring/tmp/threadring.python-dev-3.python-dev", line 30, in main
n = send(n)
^^^^^^^
RuntimeError: generator raised StopIteration