-casts << {:long=>'no_sort', :short=>'n', :type=>'flag', :mandatory=>false, :default=>nil, :allowed=>nil, :disallowed=>nil}
-casts << {:long=>'comp', :short=>'c', :type=>'flag', :mandatory=>false, :default=>nil, :allowed=>nil, :disallowed=>nil}
-casts << {:long=>'identity', :short=>'i', :type=>'float', :mandatory=>true, :default=>0.9, :allowed=>nil, :disallowed=>nil}
+casts << {long: 'no_sort', short: 'n', type: 'flag', mandatory: false, default: nil, allowed: nil, disallowed: nil}
+casts << {long: 'comp', short: 'c', type: 'flag', mandatory: false, default: nil, allowed: nil, disallowed: nil}
+casts << {long: 'identity', short: 'i', type: 'float', mandatory: true, default: 0.9, allowed: nil, disallowed: nil}
+casts << {long: 'cpus', short: 'C', type: 'uint', mandatory: false, default: 1, allowed: nil, disallowed: "0"}