performance measurements
Each table row shows performance measurements for this Python dev program with a particular command-line input value N.
| N | CPU secs | Elapsed secs | Memory KB | Code B | ≈ CPU Load |
|---|---|---|---|---|---|
| 14 | 1.05 | 0.21 | 2,296 | 706 | 62% 57% 60% 62% 62% 55% 86% 65% |
Read the ↓ make, command line, and program output logs to see how this program was run.
Read binary-trees benchmark to see what this program should do.
notes
binary-trees Python dev program source code
# The Computer Language Benchmarks Game
# http://benchmarksgame.alioth.debian.org/
#
# contributed by Antoine Pitrou
# modified by Dominique Wahli and Daniel Nanz
# modified by Joerg Baumann
import sys
import multiprocessing as mp
def make_tree(i, d):
if d > 0:
d -= 1
return (i, make_tree(i, d), make_tree(i + 1, d))
return (i, None, None)
def check_tree(node):
(i, l, r) = node
if l is None:
return i
else:
return i + check_tree(l) - check_tree(r)
def make_check(itde, make=make_tree, check=check_tree):
i, d = itde
return check(make(i, d))
def get_argchunks(i, d, chunksize=5000):
assert chunksize % 2 == 0
chunk = []
for k in range(1, i + 1):
chunk.extend([(k, d), (-k, d)])
if len(chunk) == chunksize:
yield chunk
chunk = []
if len(chunk) > 0:
yield chunk
def main(n, min_depth=4):
max_depth = max(min_depth + 2, n)
stretch_depth = max_depth + 1
if mp.cpu_count() > 1:
pool = mp.Pool()
chunkmap = pool.map
else:
chunkmap = map
print('stretch tree of depth {0}\t check: {1}'.format(
stretch_depth, make_check((0, stretch_depth))))
long_lived_tree = make_tree(0, max_depth)
mmd = max_depth + min_depth
for d in range(min_depth, stretch_depth, 2):
i = 2 ** (mmd - d)
cs = 0
for argchunk in get_argchunks(i,d):
cs += sum(chunkmap(make_check, argchunk))
print('{0}\t trees of depth {1}\t check: {2}'.format(i * 2, d, cs))
print('long lived tree of depth {0}\t check: {1}'.format(
max_depth, check_tree(long_lived_tree)))
main(int(sys.argv[1]))
make, command-line, and program output logs
Fri, 09 Sep 2022 05:52:50 GMT COMMAND LINE: /usr/bin/python3.12 binarytrees.python-dev 14 PROGRAM OUTPUT: stretch tree of depth 15 check: -1 32768 trees of depth 4 check: -32768 8192 trees of depth 6 check: -8192 2048 trees of depth 8 check: -2048 512 trees of depth 10 check: -512 128 trees of depth 12 check: -128 32 trees of depth 14 check: -32 long lived tree of depth 14 check: -1