Parallel processing on Ruby On Rails using fork

gistfile1.txt

fork do
  ActiveRecord::Base.establish_connection
  for i in 0..20000
    puts 'I m in sub process-1'
  end
 exit
end
fork do
  ActiveRecord::Base.establish_connection
  for i in 2001..40000
    puts 'I m in sub process-2'
  end
 exit
end

.......

fork do
  ActiveRecord::Base.establish_connection
  for i in 40000..N
    puts 'I m in sub process-M'
  end
 exit
end