NAME

Bencher::Scenario::NormalRandom - Benchmark generating normally distributed normal numbers

VERSION

This document describes version 0.001 of Bencher::Scenario::NormalRandom (from Perl distribution Bencher-Scenario-NormalRandom), released on 2018-09-02.

SYNOPSIS

To run benchmark with default option:

 % bencher -m NormalRandom

To run module startup overhead benchmark:

 % bencher --module-startup -m NormalRandom

For more options (dump scenario, list/include/exclude/add participants, list/include/exclude/add datasets, etc), see bencher or run bencher --help.

DESCRIPTION

Each participant generates 1000 random numbers that are normally distributed. If a module accepts a range, we use [0, 1]. If a module accepts distribution parameters mean and standard deviation, we use 0.5 and 0.25 respectively.

Packaging a benchmark script as a Bencher scenario makes it convenient to include/exclude/add participants/datasets (either via CLI or Perl code), send the result to a central repository, among others . See Bencher and bencher (CLI) for more details.

BENCHMARKED MODULES

Version numbers shown below are the versions used when running the sample benchmark.

Math::Random::GaussianRange

Math::Random::NormalDistribution 0.01

Math::Random::OO::Normal 0.22

BENCHMARK PARTICIPANTS

• Math::Random::GaussianRange (perl_code)

  Code template:

   Math::Random::GaussianRange::generate_normal_range({min=>0, max=>1, n=>1000, round=>0})

• Math::Random::NormalDistribution (perl_code)

  Code template:

   my $gen = Math::Random::NormalDistribution::rand_nd_generator(0.5, 0.25); [map {$gen->()} 1..1000]

• Math::Random::OO::Normal (perl_code)

  Code template:

   my $oo = Math::Random::OO::Normal->new(0.5, 0.25); [map {$oo->next} 1..1000]

SAMPLE BENCHMARK RESULTS

Run on: perl: v5.26.1, CPU: Intel(R) Core(TM) M-5Y71 CPU @ 1.20GHz (2 cores), OS: GNU/Linux LinuxMint version 18.3, OS kernel: Linux version 4.10.0-38-generic.

Benchmark with default options (bencher -m NormalRandom):

 #table1#
 +----------------------------------+-----------+-----------+------------+---------+---------+
 | participant                      | rate (/s) | time (ms) | vs_slowest |  errors | samples |
 +----------------------------------+-----------+-----------+------------+---------+---------+
 | Math::Random::OO::Normal         |       374 |     2.68  |       1    | 1.1e-06 |      20 |
 | Math::Random::GaussianRange      |      1400 |     0.69  |       3.9  | 9.6e-07 |      20 |
 | Math::Random::NormalDistribution |      2430 |     0.411 |       6.51 | 2.1e-07 |      20 |
 +----------------------------------+-----------+-----------+------------+---------+---------+

Benchmark module startup overhead (bencher -m NormalRandom --module-startup):

 #table2#
 +----------------------------------+-----------+------------------------+------------+---------+---------+
 | participant                      | time (ms) | mod_overhead_time (ms) | vs_slowest |  errors | samples |
 +----------------------------------+-----------+------------------------+------------+---------+---------+
 | Math::Random::GaussianRange      |      32   |                   25.6 |       1    | 3.6e-05 |      20 |
 | Math::Random::OO::Normal         |      21   |                   14.6 |       1.52 | 1.5e-05 |      22 |
 | Math::Random::NormalDistribution |      11   |                    4.6 |       2.9  | 1.1e-05 |      20 |
 | perl -e1 (baseline)              |       6.4 |                    0   |       5    | 3.5e-05 |      20 |
 +----------------------------------+-----------+------------------------+------------+---------+---------+

To display as an interactive HTML table on a browser, you can add option --format html+datatables.

HOMEPAGE

Please visit the project's homepage at https://metacpan.org/release/Bencher-Scenario-NormalRandom.

SOURCE

Source repository is at https://github.com/perlancar/perl-Bencher-Scenario-NormalRandom.

BUGS

Please report any bugs or feature requests on the bugtracker website https://rt.cpan.org/Public/Dist/Display.html?Name=Bencher-Scenario-NormalRandom

When submitting a bug or request, please include a test-file or a patch to an existing test-file that illustrates the bug or desired feature.

AUTHOR

perlancar <perlancar@cpan.org>

COPYRIGHT AND LICENSE

This software is copyright (c) 2018 by perlancar@cpan.org.

This is free software; you can redistribute it and/or modify it under the same terms as the Perl 5 programming language system itself.

cpanm Bencher::Scenario::NormalRandom

perl -MCPAN -e shell
install Bencher::Scenario::NormalRandom