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|
|550||54.47||54.49||15,896||498||0% 1% 1% 1% 0% 1% 100% 1%|
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.
# 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 # Used list comprehension by Vadim Zelenin # 2to3 from math import sqrt from sys import argv def eval_A(i, j): ij = i+j return 1.0 / (ij * (ij + 1) / 2 + i + 1) def eval_A_times_u(u): local_eval_A = eval_A return [ sum([ local_eval_A(i, j) * u_j for j, u_j in enumerate(u) ] ) for i in range(len(u)) ] def eval_At_times_u(u): local_eval_A = eval_A return [ sum([ local_eval_A(j, i) * u_j for j, u_j in enumerate(u) ] ) for i in range(len(u)) ] def eval_AtA_times_u(u): return eval_At_times_u(eval_A_times_u(u)) def main(): n = int(argv) u =  * n local_eval_AtA_times_u = eval_AtA_times_u for dummy in range(10): v = local_eval_AtA_times_u(u) u = local_eval_AtA_times_u(v) vBv = vv = 0 for ue, ve in zip(u, v): vBv += ue * ve vv += ve * ve print("%0.9f" % (sqrt(vBv/vv))) main()
Wed, 28 Sep 2022 09:33:32 GMT COMMAND LINE: /usr/bin/rustpython spectralnorm.rustpython-6.rustpython 550 PROGRAM OUTPUT: 1.274224125 encodings initialization failed. Only utf-8 encoding will be supported. ModuleNotFoundError: No module named 'encodings' The above exception was the direct cause of the following exception: RuntimeError: Could not import encodings. Is your RUSTPYTHONPATH set? If you don't have access to a consistent external environment (e.g. if you're embedding rustpython in another application), try enabling the freeze-stdlib feature