performance measurements
Each table row shows performance measurements for this Python 3 program with a particular command-line input value N.
| N | CPU secs | Elapsed secs | Memory KB | Code B | ≈ CPU Load |
|---|---|---|---|---|---|
| 500 | 0.26 | 0.26 | 280 | 233 | 0% 4% 0% 100% |
| 3,000 | 3.59 | 3.59 | 151,308 | 233 | 1% 1% 0% 100% |
| 5,500 | 11.92 | 11.93 | 483,416 | 233 | 0% 1% 1% 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
Python 3.3.1 (default, Apr 11 2013, 12:56:47) [GCC 4.7.2] on linux
spectral-norm Python 3 #2 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 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) spectralnorm(int(argv[1]))
make, command-line, and program output logs
Fri, 12 Apr 2013 11:53:46 GMT MAKE: mv spectralnorm.python3-2.python3 spectralnorm.python3-2.py 0.01s to complete and log all make actions COMMAND LINE: /usr/local/src/Python-3.3.1/bin/python3.3 spectralnorm.python3-2.py 5500 PROGRAM OUTPUT: 1.274224153