FilesExpand file tree

 master

/

AddSIMD.cs

Copy path

Blame

More file actions

Blame

More file actions

Latest commit

 

History

History

History

99 lines (89 loc) · 2.45 KB

 master

/

AddSIMD.cs

Copy path

Top

File metadata and controls

• Code
• Blame

99 lines (89 loc) · 2.45 KB

Raw

Copy raw file

Download raw file

Open symbols panel

Edit and raw actions

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

32

33

34

35

36

37

38

39

40

41

42

43

44

45

46

47

48

49

50

51

52

53

54

55

56

57

58

59

60

61

62

63

64

65

66

67

68

69

70

71

72

73

74

75

76

77

78

79

80

81

82

83

84

85

86

87

88

89

90

91

92

93

94

95

96

97

98

99

using BenchmarkDotNet;

using BenchmarkDotNet.Attributes;

using System;

using System.Linq.Expressions;

using System.Numerics;

using System.Runtime.CompilerServices;

namespace ArrayMathNETFramework

{

public class AddSIMD

{

const int N = 100_000_000;

float[] A;

float[] B;

[GlobalSetup]

public void Setup()

{

A = new float[N];

B = new float[N];

for (int i = 0; i < N; i++)

{

A[i] = i;

B[i] = i;

}

}

/// <summary>

/// Span was used.

/// </summary>

[Benchmark(OperationsPerInvoke = 100)]

public unsafe void AddWithSIMD()

{

int N = A.Length;

float[] C = new float[N];

var simdLength = Vector<int>.Count;

int i;

for (i = 0; i <= A.Length - simdLength; i += simdLength)

{

var va = new Vector<float>(A, i);

var vb = new Vector<float>(B, i);

(va + vb).CopyTo(C, i);

}

for (; i < A.Length; ++i)

{

C[i] = A[i] + B[i];

}

}

/// <summary>

/// Span was used.

/// </summary>

[Benchmark(OperationsPerInvoke = 100)]

public unsafe void AddWithSIMDOptimized()

{

int N = A.Length;

float[] C = new float[N];

var simdLength = Vector<int>.Count;

int len = A.Length - simdLength;

int i;

for (i = 0; i <= len; i += simdLength)

{

var va = new Vector<float>(A, i);

var vb = new Vector<float>(B, i);

(va + vb).CopyTo(C, i);

}

for (; i < A.Length; ++i)

{

C[i] = A[i] + B[i];

}

}

// Add scalar to each element of dst

//private static void Add(float scalar, Span<float> dst)

//{

// Sha256

// if (Avx.IsSupported)

// {

// AvxIntrinsics.AddScalarU(scalar, dst);

// }

// else if (Sse.IsSupported)

// {

// SseIntrinsics.AddScalarU(scalar, dst);

// }

// else

// {

// for (int i = 0; i < dst.Length; i++)

// {

// dst[i] += scalar;

// }

// }

//}

}

}