1. results

# interpreted AST

system ~/projects/jruby $ jruby.bash -X-C mandelbrot.rb 20
warming up
running mandelbrot(500) for 20 iterations
4.862
4.822
4.822
4.846
5.057
5.018
4.827
4.864
4.876
4.858
4.863
4.83
4.81
4.832
4.873
4.883
4.888
4.871
4.85
4.831

# interpreted IR

system ~/projects/jruby $ jruby.bash -X-CIR mandelbrot.rb 20
warming up
running mandelbrot(500) for 20 iterations
5.199
5.118
5.091
5.115
5.056
5.124
5.041
5.003
5.029
5.013
4.983
5.011
5.013
5.025
5.07
5.022
4.995
5.031
5.012
4.992

# Compiled AST, no invokedynamic

system ~/projects/jruby $ jruby.bash -Xcompile.invokedynamic=false  mandelbrot.rb 20
warming up
running mandelbrot(500) for 20 iterations
0.732
0.745
0.715
0.73
0.72
0.726
0.739
0.746
0.792
0.817
0.82
0.823
0.814
0.78
0.723
0.727
0.745
0.723
0.746
0.724

# Compiled AST, with invokedynamic

system ~/projects/jruby $ jruby.bash mandelbrot.rb 20
warming up
running mandelbrot(500) for 20 iterations
0.597
0.601
0.611
0.602
0.606
0.588
0.605
0.593
0.609
0.6
0.59
0.61
0.614
0.598
0.605
0.591
0.61
0.593
0.596
0.589

# Compiled IR, with invokedynamic

system ~/projects/jruby $ jruby.bash -X+CIR  mandelbrot.rb 20
warming up
running mandelbrot(500) for 20 iterations
2.171
0.722
0.708
0.697
0.704
0.692
0.706
0.702
0.698
0.694
0.695
0.689
0.704
0.703
0.702
0.698
0.697
0.719
0.708
0.692

# Interpreted IR with unboxing (no boxing guards)

system ~/projects/jruby $ jruby.bash -X-CIR -Xir.unboxing=true mandelbrot.rb 20
warming up
running mandelbrot(500) for 20 iterations
2.454
2.459
2.393
2.377
2.39
2.46
2.385
2.373
2.393
2.399
2.449
2.568
2.726
2.395
2.407
2.438
2.384
2.387
2.4
2.479

# Compiled IR, with invokedynamic and unboxing (without boxing guards)

system ~/projects/jruby $ jruby.bash -X+CIR -Xir.unboxing=true mandelbrot.rb 20
warming up
running mandelbrot(500) for 20 iterations
0.565
0.312
0.097
0.098
0.104
0.097
0.097
0.106
0.108
0.097
0.114
0.102
0.098
0.095
0.094
0.096
0.096
0.097
0.097
0.095

# Truffle AST interpreter without Graal JIT

system ~/projects/jruby $ jruby.bash -Xtruffle mandelbrot.rb 20
warming up
running mandelbrot(500) for 20 iterations
21.662
21.815
22.059
22.247
21.903
22.222
22.228
21.854
21.997
22.368
22.665
22.632
22.125
21.986
21.941
22.508
22.049
22.547
24.453
25.782

# Truffle AST interpreter plus Graal JIT

system ~/projects/jruby $ jruby.bash -Xtruffle mandelbrot.rb 20
warming up
[truffle] optimized Method mandelbrot_foo:(name):1@10e41621            34aa3427 |Nodes     332 |Time  2169(1630+540 )ms |Nodes   717/ 1105 |CodeSize 7696
running mandelbrot(500) for 20 iterations
0.048
0.048
0.048
0.046
0.048
0.047
0.048
0.048
0.047
0.047
0.047
0.048
0.047
0.046
0.053
0.048
0.048
0.048
0.05
0.049

system ~/projects/jruby $ ../rubinius/bin/rbx mandelbrot.rb 20
warming up
running mandelbrot(500) for 20 iterations
1.777457
1.813019
1.823906
1.8459219999999998
1.776521
1.798789
1.80667
1.8231220000000001
2.018687
1.982492
1.832832
1.808677
1.810901
1.8509929999999999
1.828273
1.818692
1.8148900000000001
1.786165
1.780102
1.776106

system ~/projects/jruby $ rvm ruby-2.1 do ruby mandelbrot.rb 20
warming up
running mandelbrot(500) for 20 iterations
1.864769
1.863214
1.856388
1.854244
1.847911
1.89504
1.898902
1.851657
1.843574
1.866589
1.886925
1.87296
1.846614
1.86955
1.848435
1.921733
1.841216
1.856
1.85546
1.877311

system ~/projects/jruby $ ../topaz/bin/topaz mandelbrot.rb 20
warming up
running mandelbrot(500) for 20 iterations
0.0593700408936
0.0568559169769
0.0556919574738
0.0560510158539
0.0551681518555
0.0552649497986
0.0546820163727
0.0579178333282
0.0544011592865
0.0559079647064
0.0561909675598
0.0547771453857
0.0551559925079
0.0554881095886
0.0549249649048
0.0552458763123
0.0564270019531
0.0546000003815
0.0535879135132
0.0573658943176

2. mandelbrot.rb

def mandelbrot_foo(size)
#puts "P4\n#{size} #{size}"

iter = 50
limit = 2.0
byte_acc = 0
bit_num = 0

y = 0
while (y < size) do
    x = 0
    while (x < size) do
        zr = 0.0
        zi = 0.0
        cr = (2.0*x/size)-1.5
        ci = (2.0*y/size)-1.0
        escape = false

        i = 0
        while (i < iter) do
           tr = zr*zr - zi*zi + cr
           ti = 2*zr*zi + ci
           zr, zi = tr, ti

           if (zr*zr+zi*zi) > (limit*limit)
               escape = true
               break
           end
           i += 1
        end

        byte_acc = (byte_acc << 1) | (escape ? 0b0 : 0b1)
        bit_num += 1

        if (bit_num == 8) || (x == size - 1)
            byte_acc <<= (8 - bit_num)
            #print byte_acc.chr
            byte_acc = 0
            bit_num = 0
        end
        x += 1
    end
    y += 1
end
end

puts "warming up"
10000.times {
  mandelbrot_foo(10)
}

times = (ARGV[0] || 10).to_i
m = (ARGV[1] || 500).to_i

puts "running mandelbrot(" + m.to_s + ") for " + times.to_s + " iterations"

i = 0
while i < times
  t = Time.now
  mandelbrot_foo(m)
  puts Time.now - t
  i+=1
end