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 |
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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 cdef float eval_A(int i, int j): ij = i+j return 1.0 / (ij * (ij + 1) / 2 + i + 1) def eval_A_times_u(u): cdef int i, j, u_j 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): cdef int i, j, u_j 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(): cdef int n, dummy, ue, ve, vBv, vv n = int(argv[1]) u = [1] * 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()
Sun, 23 Apr 2023 09:39:14 GMT MAKE: make[1]: Vstupuje se do adresáře „/home/dundee/work/pybenchmarks/bencher/tmp/spectralnorm/tmp“ cp spectralnorm.cython-6.cython `echo spectralnorm.cython-6.cython | sed 's/cython-..//' | sed 's/.cython//'`.pyx cythonize -3 -bi `echo spectralnorm.cython-6.cython | sed 's/cython-..//' | sed 's/.cython//'`.pyx Compiling /home/dundee/work/pybenchmarks/bencher/tmp/spectralnorm/tmp/spectralnorm.pyx because it changed. [1/1] Cythonizing /home/dundee/work/pybenchmarks/bencher/tmp/spectralnorm/tmp/spectralnorm.pyx make[1]: Opouští se adresář „/home/dundee/work/pybenchmarks/bencher/tmp/spectralnorm/tmp“ 2.38s to complete and log all make actions COMMAND LINE: /usr/bin/python3 -c "import spectralnorm" 550 UNEXPECTED OUTPUT 1c1 < 1.000000000 --- > 1.274224125 PROGRAM OUTPUT: 1.000000000