performance measurements

Each table row shows performance measurements for this Ruby JRuby program with a particular command-line input value N.

 N  CPU secs Elapsed secs Memory KB Code B ≈ CPU Load
250,00016.125.25570,700540  73% 86% 72% 79%
2,500,00062.6219.74678,832540  86% 82% 68% 83%
25,000,000524.11173.58881,064540  87% 72% 87% 57%

Read the ↓ make, command line, and program output logs to see how this program was run.

Read k-nucleotide benchmark to see what this program should do.

 notes

jruby 1.7.16.1 (1.9.3p392) 2014-10-28 4e93f31 on Java HotSpot(TM) Server VM 1.8.0_25-b17 +jit [linux-i386]

 k-nucleotide Ruby JRuby #3 program source code

# The Computer Language Benchmarks Game
# http://benchmarksgame.alioth.debian.org
#
# contributed by jose fco. gonzalez
# modified by Sokolov Yura
# Parallelism by Rick Branson
# converted to threads on ruby Christian Stone

$seq = String.new

def frequency(seq, length)
  frequencies = Hash.new(0)
  ns          = seq.length + 1 - length
  
  for i in (0 ... ns)
    frequencies[seq[i, length]] += 1
  end
  
  [ns, frequencies]
end

def sort_by_freq(seq, length)
  ret       = ""
  n, table  = frequency(seq, length)

  table.sort{|a,b| b[1] <=> a[1]}.each do |v|
      ret += "%s %.3f\n" % [v[0].upcase,((v[1]*100).to_f/n)]
  end
  
  ret += "\n"
end

def find_seq(seq, s)
  n, table = frequency(seq, s.length)
  "#{table[s].to_s}\t#{s.upcase}\n"
end

line = STDIN.gets while line !~ /^>THREE/
line = STDIN.gets
while (line !~ /^>/) & line do
    $seq << line.chomp
    line = STDIN.gets
end

class Worker
  def initialize(&block)
    @t = Thread.new do
      Thread.current[:result] = yield
    end
  end
  
  def result
    @t.join
    @t[:result]
  end
end

FREQS   = [1, 2]
NUCLEOS = %w(ggt ggta ggtatt ggtattttaatt ggtattttaatttatagt)

workers =   FREQS.map   { |i| Worker.new { sort_by_freq($seq, i) } }
workers +=  NUCLEOS.map { |s| Worker.new { find_seq($seq, s) } }
  
results = workers.map { |w| w.result }
print results.join

 make, command-line, and program output logs

Sat, 22 Nov 2014 03:11:36 GMT

MAKE:
mv knucleotide.jruby-3.jruby knucleotide.rb
0.01s to complete and log all make actions

COMMAND LINE:
/usr/local/src/jruby-1.7.16.1/bin/jruby -Xcompile.invokedynamic=true -J-server -J-Xmn512m -J-Xms2048m -J-Xmx2048m knucleotide.rb 0 < knucleotide-input25000000.txt

PROGRAM OUTPUT:
A 30.295
T 30.151
C 19.800
G 19.754

AA 9.177
TA 9.132
AT 9.131
TT 9.091
CA 6.002
AC 6.001
AG 5.987
GA 5.984
CT 5.971
TC 5.971
GT 5.957
TG 5.956
CC 3.917
GC 3.911
CG 3.909
GG 3.902

1471758	GGT
446535	GGTA
47336	GGTATT
893	GGTATTTTAATT
893	GGTATTTTAATTTATAGT

Revised BSD license

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