Table 4 Running times of Crossbow on EMR using elasticHPC.

Using c1.xlarge

1

8

66 m

769 m

835.1 m

$1.68

4

32

39.5 m

258.6 m

298.4 m

$2.4

8

64

35.25 m

121.5 m

156.8 m

$2.88

16

128

34.1 m

62.6 m

96.9 m

$3.84

24

192

33 m

46.6 m

79.8 m

$5.76

32

256

33.0 m

39.95 m

73.5 m

$7.68

64

512

32.65 m

23.6 m

56.1 m

$7.68

Using m1.xlarge

1

4

72.2 m

1675.6 m

1748 m

$2.7

4

16

40.6 m

431.4 m

472.6 m

$2.88

8

32

37.3 m

263.8 m

301.1 m

$4.32

16

64

33.6 m

95.6 m

129.6 m

$4.32

24

96

32.9 m

54.2 m

87.1 m

$4.32

32

128

32.6 m

51.5 m

84.3 m

$5.76

64

256

32.8 m

33.3 m

66.1 m

$11.52