performance measurements
Each table row shows performance measurements for this Nuitka program with a particular command-line input value N.
| N | CPU secs | Elapsed secs | Memory KB | Code B | ≈ CPU Load |
|---|---|---|---|---|---|
| 550 | 2.12 | 2.13 | 11,392 | 594 | 0% 0% 1% 0% 0% 0% 0% 100% |
Read the ↓ make, command line, and program output logs to see how this program was run.
Read spectral-norm benchmark to see what this program should do.
notes
spectral-norm Nuitka #8 program source code
# The Computer Language Benchmarks Game
# http://benchmarksgame.alioth.debian.org/
#
# Contributed by Sebastien Loisel
# Fixed by Isaac Gouy
# Sped up by Josh Goldfoot
# Dirtily sped up by Simon Descarpentries
# Sped up by Joseph LaFata
from array import array
from math import sqrt
from sys import argv
import sys
if sys.version_info < (3, 0):
from itertools import izip as zip
else:
xrange = range
def eval_A (i, j):
return 1.0 / (((i + j) * (i + j + 1) >> 1) + i + 1)
def eval_A_times_u (u, resulted_list):
u_len = len (u)
local_eval_A = eval_A
for i in xrange (u_len):
partial_sum = 0
j = 0
while j < u_len:
partial_sum += local_eval_A (i, j) * u[j]
j += 1
resulted_list[i] = partial_sum
def eval_At_times_u (u, resulted_list):
u_len = len (u)
local_eval_A = eval_A
for i in xrange (u_len):
partial_sum = 0
j = 0
while j < u_len:
partial_sum += local_eval_A (j, i) * u[j]
j += 1
resulted_list[i] = partial_sum
def eval_AtA_times_u (u, out, tmp):
eval_A_times_u (u, tmp)
eval_At_times_u (tmp, out)
def main():
n = int (argv [1])
u = array("d", [1]) * n
v = array("d", [1]) * n
tmp = array("d", [1]) * n
local_eval_AtA_times_u = eval_AtA_times_u
for dummy in xrange (10):
local_eval_AtA_times_u (u, v, tmp)
local_eval_AtA_times_u (v, u, tmp)
vBv = vv = 0
for ue, ve in zip (u, v):
vBv += ue * ve
vv += ve * ve
print("%0.9f" % (sqrt(vBv/vv)))
main()
make, command-line, and program output logs
Sun, 23 Apr 2023 09:39:54 GMT MAKE: make[1]: Vstupuje se do adresáře „/home/dundee/work/pybenchmarks/bencher/tmp/spectralnorm/tmp“ nuitka3 --remove-output spectralnorm.nuitka-8.nuitka Nuitka-Options:INFO: Used command line options: --remove-output spectralnorm.nuitka-8.nuitka Nuitka-Options:WARNING: You did not specify to follow or include anything but main program. Check options and make sure that is intended. Nuitka:INFO: Starting Python compilation with Nuitka '1.5' on Python '3.10' commercial grade 'not installed'. Nuitka:INFO: Completed Python level compilation and optimization. Nuitka:INFO: Generating source code for C backend compiler. Nuitka:INFO: Running data composer tool for optimal constant value handling. Nuitka:INFO: Running C compilation via Scons. Nuitka-Scons:INFO: Backend C compiler: gcc (gcc). Nuitka-Scons:INFO: Backend linking program with 7 files (no progress information available). Nuitka-Scons:WARNING: You are not using ccache. Nuitka:INFO: Removing build directory 'spectralnorm.nuitka-8.nuitka.build'. Nuitka:INFO: Successfully created 'spectralnorm.nuitka-8.nuitka.bin'. cp spectralnorm.nuitka-8.nuitka.bin spectralnorm.nuitka-8.nuitka_run make[1]: Opouští se adresář „/home/dundee/work/pybenchmarks/bencher/tmp/spectralnorm/tmp“ 14.37s to complete and log all make actions COMMAND LINE: ./spectralnorm.nuitka-8.nuitka_run 550 PROGRAM OUTPUT: 1.274224125