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Table 1 Number of iterations and number of functional evaluations

From: New hybrid conjugate gradient methods with the generalized Wolfe line search

p

n

DY

DY and HS

PRP

FR and PRP

21

10^4

72/222

70/212

58/179

50/189

22

10^4

74/532

70/520

63/429

58/409

23

10^4

62/241

60/241

41/198

40/176

24

10^4

89/304

89/300

82/297

82/302

25

10^4

51/153

44/143

46/127

44/107

26

10^4

55/202

56/202

52/198

46/188

27

10^4

45/246

46/238

52/239

42/209

28

10^4

91/425

84/415

84/337

80/312

29

10^4

58/245

55/240

45/211

39/183

30

10^4

53/308

48/298

43/281

43/277

31

10^4

74/268

74/258

76/281

70/265

32

10^4

77/457

74/447

87/421

82/425

33

10^4

48/172

38/152

37/136

33/126

34

10^4

82/396

80/383

58/385

56/354

35

10^4

76/342

74/322

72/276

68/256

CPU

355 s

312 s

252 s

231 s