reddit-r-rust-benchmarks-game.rb

BENCHES = {
  binary_trees: {
    c: 3.73,
    cs: 7.73,
    cpp: 3.68,
    go: 28.82,
    java: 8.39,
    rust: 4.10,
  },

  fannkuch_redux: {
    c: 8.67,
    cs: 17.46,
    cpp: 10.12,
    go: 17.82,
    java: 17.98,
    rust: 10.13,
  },

  fasta: {
    c: 1.36,
    cs: 2.27,
    cpp: 1.33,
    go: 2.07,
    java: 2.32,
    rust: 1.46,
  },

  k_nucleotide: {
    c: 4.88,
    cs: 5.48,
    cpp: 3.73,
    go: 12.09,
    java: 8.74,
    rust: 5.45,
  },

  mandelbrot: {
    c: 1.64,
    cs: 5.54,
    cpp: 1.51,
    go: 5.47,
    java: 6.96,
    rust: 1.74,
  },

  n_body: {
    c: 9.37,
    cs: 21.41,
    cpp: 9.42,
    go: 21.00,
    java: 22.00,
    rust: 5.70,
  },

  pidigits: {
    c: 1.88,
    cs: 2.06,
    cpp: 1.89,
    go: 2.97,
    java: 3.13,
    rust: 1.75,
  },

  regex_redux: {
    c: 1.46,
    cs: 2.22,
    cpp: 1.83,
    go: 28.99,
    java: 10.50,
    rust: 2.44,
  },

  reverse_complement: {
    c: 1.76,
    cs: 2.99,
    cpp: 2.93,
    go: 4.00,
    java: 3.32,
    rust: 1.62,
  },

  spectral_norm: {
    c: 1.98,
    cs: 4.07,
    cpp: 1.98,
    go: 3.98,
    java: 4.26,
    rust: 1.97,
  }
}

MEMORY = {
  binary_trees: {
    c: 116600,
    cs: 809848,
    cpp: 119052,
    go: 463464,
    java: 960056,
    rust: 199760,
  },

  fannkuch_redux: {
    c: 852,
    cs: 34728,
    cpp: 1852,
    go: 1472,
    java: 31180,
    rust: 916,
  },

  fasta: {
    c: 2864,
    cs: 68140,
    cpp: 1740,
    go: 2620,
    java: 42212,
    rust: 2008,
  },

  k_nucleotide: {
    c: 130060,
    cs: 186672,
    cpp: 156080,
    go: 158320,
    java: 470116,
    rust: 135028,
  },

  mandelbrot: {
    c: 26512,
    cs: 66356,
    cpp: 25640,
    go: 31004,
    java: 76316,
    rust: 32472,
  },

  n_body: {
    c: 1088,
    cs: 36520,
    cpp: 1704,
    go: 1536,
    java: 32272,
    rust: 916,
  },

  pidigits: {
    c: 2720,
    cs: 38564,
    cpp: 4380,
    go: 8520,
    java: 97364,
    rust: 3036,
  },

  regex_redux: {
    c: 152216,
    cs: 295364,
    cpp: 203520,
    go: 338504,
    java: 571736,
    rust: 199876,
  },

  reverse_complement: {
    c: 994488,
    cs: 1035748,
    cpp: 980716,
    go: 826728,
    java: 609712,
    rust: 994780,
  },

  spectral_norm: {
    c: 1168,
    cs: 35988,
    cpp: 1164,
    go: 2656,
    java: 33572,
    rust: 2204,
  }
}

def summary_by_lang(benches, floor: 0.0)
  stats = stats_by_lang(benches, floor: floor)

  summary = stats.each_pair.with_object({}) do |(lang, times), summary|
    summary[lang] = avg(times)
  end  

  summary.sort_by { |_lang, times| times }.to_h
end

def stats_by_lang(benches, floor: 0.0)
  benches.each_pair.with_object({}) do |(name, bench), times|
    stats = stats_for_bench(bench, floor: floor)

    stats.each_pair do |lang, time|
      times[lang] ||= []
      times[lang] << time 
    end
  end
end

def stats_for_bench(bench, floor: 0.0)
  best_time = [floor, bench.values.sort.first.to_f].max 

  bench.each_pair.with_object({}) do |(lang, time), stats|
    ratio = [floor, time.to_f].max / best_time
    stats[lang] = ratio       
  end
end

def avg(array)
  array.inject { |sum, el| sum + el }.to_f / array.size
end

def print_summary(data, floor: 0.0)
  summary = summary_by_lang(data, floor: floor)
  summary_stats = stats_for_bench(summary, floor: 0.0)

  summary_stats.each_pair do |lang, summary|
    puts "    #{lang}: #{summary.round(4)}"
  end

  puts "\n"
end

puts "    Time score:"
print_summary(BENCHES)

puts "    Memory score (no floor):"
print_summary(MEMORY)

puts "    Memory score (floor 50k):"
print_summary(MEMORY, floor: 50000)