Module: Pwrake::Parallelism

Defined in:
lib/pwrake/report/parallelism.rb

Class Method Summary collapse

Class Method Details

.count_start_end_from_csv(file) ⇒ Object 



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# File 'lib/pwrake/report/parallelism.rb', line 6

def count_start_end_from_csv(file)
  a = []
  start_time = nil

  CSV.foreach(file,:headers=>true) do |row|
    if row['command'] == 'pwrake_profile_start'
      start_time = Time.parse(row['start_time'])
    elsif row['command'] == 'pwrake_profile_end'
      t = Time.parse(row['start_time']) - start_time
      a << [t,0]
    elsif start_time
      t = Time.parse(row['start_time']) - start_time
      a << [t,+1]
      t = Time.parse(row['end_time']) - start_time
      a << [t,-1]
    end
  end

  a.sort{|x,y| x[0]<=>y[0]}
end

.exec_density(a) ⇒ Object 



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# File 'lib/pwrake/report/parallelism.rb', line 27

def exec_density(a)
  reso = 0.1
  delta = 1/reso
  t_end = (a.last)[0]
  n = (t_end/reso).to_i + 1
  i = 0
  t_next = reso
  d = (n+1).times.map{|i| [reso*i,0]}
  a.each do |x|
    while d[i+1][0] <= x[0]
      i += 1
    end
    if x[1] == 1
      d[i][1] += delta
    end
  end
  d
end

.plot_parallelism(file) ⇒ Object 



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# File 'lib/pwrake/report/parallelism.rb', line 46

def plot_parallelism(file)
  a = count_start_end_from_csv(file)
  return if a.size < 4

  density = exec_density(a)

  base = file.sub(/\.csv$/,"")
  fpara = base+"_para.dat"

  n = a.size
  i = 0
  y = 0
  y_max = 0

  File.open(fpara,"w") do |f|
    begin
      t = 0
      y_pre = 0
      n.times do |i|
        if a[i][0]-t > 0.001
          f.printf "%.3f %d\n", t, y_pre
          t = a[i][0]
          f.printf "%.3f %d\n", t, y
        end
        y += a[i][1]
        y_pre = y
        y_max = y if y > y_max
      end
    rescue
      p a[i]
    end
  end

  t_end = (a.last)[0]

  IO.popen("gnuplot","r+") do |f|
    f.puts "
set terminal png
set output '#{base}.png'
#set rmargin 10
set title '#{base}'
set xlabel 'time (sec)'
set ylabel 'parallelism'

set arrow 1 from #{t_end},#{y_max*0.5} to #{t_end},0 linecolor rgb 'blue'
set label 1 at first #{t_end},#{y_max*0.5} right \"#{t_end}\\nsec\" textcolor rgb 'blue'

plot '#{fpara}' w l axis x1y1 title 'parallelism'
"
  end

  #puts "Parallelism plot: #{base}.png"
end

.plot_parallelism2(file) ⇒ Object 



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# File 'lib/pwrake/report/parallelism.rb', line 101

def plot_parallelism2(file)
  a = count_start_end_from_csv(file)
  return if a.size < 4

  density = exec_density(a)

  base = file.sub(/\.csv$/,"")
  fpara = base+"_para.dat"
  fdens = base+'_dens.dat'
  fimg = base+'.png'

  File.open(fdens,"w") do |f|
    density.each do |t,d|
      f.puts "#{t} #{d}"
    end
  end

  n = a.size
  i = 0
  y = 0
  y_max = 0

  File.open(fpara,"w") do |f|
    begin
      t = 0
      y_pre = 0
      n.times do |i|
        if a[i][0]-t > 0.001
          f.printf "%.3f %d\n", t, y_pre
          t = a[i][0]
          f.printf "%.3f %d\n", t, y
        end
        y += a[i][1]
        y_pre = y
        y_max = y if y > y_max
      end
    rescue
      p a[i]
    end
  end

  t_end = (a.last)[0]

  IO.popen("gnuplot","r+") do |f|
    f.puts "
set terminal png
set output '#{fimg}'
#set rmargin 10
set title '#{base}'
set xlabel 'time (sec)'
set ylabel 'parallelism'
set y2tics
set ytics nomirror
set y2label 'exec/sec'

set arrow 1 from #{t_end},#{y_max*0.5} to #{t_end},0 linecolor rgb 'blue'
set label 1 \"#{t_end}\\nsec\" at first #{t_end},#{y_max*0.5} right front textcolor rgb 'blue'

plot '#{fpara}' w l axis x1y1 title 'parallelism', '#{fdens}' w l axis x1y2 title 'exec/sec'
"
  end

  #puts "Parallelism plot: #{fimg}"
  fimg
end

.plot_parallelizm_by_host(csvtable, base) ⇒ Object 



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# File 'lib/pwrake/report/parallelism.rb', line 212

def plot_parallelizm_by_host(csvtable,base)
  fpng = base+"_para_host.png"
  data = read_time_by_host_from_csv(csvtable)
  return fpng if data.size == 0

  grid = []
  hosts = data.keys.sort
  hosts.each do |h|
    a = timeline_to_grid(data[h])
    grid << a
  end

  IO.popen("gnuplot","r+") do |f|
    f.puts "
set terminal png
set output '#{fpng}'
#set rmargin 7
set lmargin 16
set pm3d map
set pm3d corners2color c1
set xlabel 'time (sec)'
set ytics nomirror
set ticslevel 0
set format y ''
"
    hosts.each_with_index do |h,i|
      if /^([^.]+)\./ =~ h
        h = $1
      end
      f.puts "set ytics add ('#{h}' #{i+0.5})"
    end
    f.puts "splot '-' using 2:1:3 with pm3d title ''"

    grid.each_with_index do |a,j|
      a.each do |x|
        f.printf "%g %g %d\n", j, x[0], x[1]
      end
      f.printf "\n"
    end
    j = grid.size
    grid.last.each do |x|
      f.printf "%g %g %d\n", j, x[0], x[1]
    end
    f.printf "e\n"
  end
  fpng
end

.read_time_by_host_from_csv(csvtable) ⇒ Object 



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# File 'lib/pwrake/report/parallelism.rb', line 167

def read_time_by_host_from_csv(csvtable)
  a = {}
  start_time = nil

  csvtable.each do |row|
    host = row['host']
    if row['command'] == 'pwrake_profile_start'
      start_time = Time.parse(row['start_time'])
    elsif row['command'] == 'pwrake_profile_end'
      t = Time.parse(row['start_time']) - start_time
      a.each do |h,v|
        v << [t,0]
      end
    elsif start_time
      a[host] ||= []
      t = Time.parse(row['start_time']) - start_time
      a[host] << [t,+1]
      t = Time.parse(row['end_time']) - start_time
      a[host] << [t,-1]
    end
  end
  a
end

.timeline_to_grid(a) ⇒ Object 



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# File 'lib/pwrake/report/parallelism.rb', line 191

def timeline_to_grid(a)
  resolution = Rational(1,10)

  a = a.sort{|x,y| x[0]<=>y[0]}
  t_end = (a.last)[0]

  ngrid = (t_end/resolution).floor
  grid = [[0,0]]

  j = 0
  a.each do |x|
    i = (x[0]/resolution).floor
    while j < i
      grid[j+1] = [j*resolution,grid[j][1]]
      j += 1
    end
    grid[i][1] += x[1]
  end
  return grid
end