Python Interpreters Benchmarks
x64 ArchLinux : AMD® Ryzen 7 4700U®

 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
5500.100.11?394  8% 0% 91% 0% 0% 0% 0% 0%

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.


  source code

# The Computer Language Benchmarks Game
# Contributed by Sebastien Loisel
# Fixed by Isaac Gouy
# Sped up by Josh Goldfoot
# Dirtily sped up by Simon Descarpentries
# Sped up with numpy by Kittipong Piyawanno
# 2to3

from sys import argv
from numpy import *

def spectralnorm(n):
	u = matrix(ones(n))
	j = arange(n)
	eval_func = lambda i : 1.0 / ((i + j) * (i + j + 1) / 2 + i + 1)
	M = matrix([eval_func(i) for i in arange(n)])
	MT = M.T
	for i in range (10):
		v = (u*MT)*M
		u = (v*MT)*M
	print("%0.9f" % (sum(u*v.T)/sum(v*v.T))**0.5)


 make, command-line, and program output logs

 Sun, 23 Apr 2023 09:40:15 GMT

make[1]: Vstupuje se do adresáře „/home/dundee/work/pybenchmarks/bencher/tmp/spectralnorm/tmp“
nuitka3 --remove-output spectralnorm.nuitka-2.nuitka
Nuitka-Options:INFO: Used command line options: --remove-output spectralnorm.nuitka-2.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 ''.
Nuitka:INFO: Successfully created 'spectralnorm.nuitka-2.nuitka.bin'.
cp spectralnorm.nuitka-2.nuitka.bin spectralnorm.nuitka-2.nuitka_run
make[1]: Opouští se adresář „/home/dundee/work/pybenchmarks/bencher/tmp/spectralnorm/tmp“
14.33s to complete and log all make actions

 ./spectralnorm.nuitka-2.nuitka_run 550


Revised BSD license

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