构造函数

产品支持情况

功能说明

根据输入的Layout对象，实例化TensorTrait对象。

函数原型

1

__aicore__ inline TensorTrait(const LayoutType& t = {})

参数说明

返回值说明

无

约束说明

无

调用示例

• TensorTrait使用示例

  // TensorTrait使用示例为基于googletest的UT示例
  
  // MakeTensorTrait方法创建TensorTrait
  AscendC::Shape<int,int,int> shape = AscendC::MakeShape(10, 20, 30);
  AscendC::Stride<int,int,int> stride = AscendC::MakeStride(1, 100, 200);
  auto layoutMake = AscendC::MakeLayout(shape, stride);    
  auto tensorTraitMake = AscendC::MakeTensorTrait<float, AscendC::TPosition::VECIN>(layoutMake);
  
  EXPECT_EQ(AscendC::Std::get<0>(tensorTraitMake.GetLayout().GetShape()), 10);
  EXPECT_EQ(AscendC::Std::get<1>(tensorTraitMake.GetLayout().GetShape()), 20);
  EXPECT_EQ(AscendC::Std::get<2>(tensorTraitMake.GetLayout().GetShape()), 30);
  EXPECT_EQ(AscendC::Std::get<0>(tensorTraitMake.GetLayout().GetStride()), 1);
  EXPECT_EQ(AscendC::Std::get<1>(tensorTraitMake.GetLayout().GetStride()), 100);
  EXPECT_EQ(AscendC::Std::get<2>(tensorTraitMake.GetLayout().GetStride()), 200);
  
  // 构造函数方法创建TensorTrait
  using TensorTraitType = AscendC::TensorTrait<half, AscendC::TPosition::VECCALC, AscendC::Layout<AscendC::Shape<int, int, int>, AscendC::Stride<int, int, int>>>;
  TensorTraitType tensorTraitInit(layoutMake);
  
  EXPECT_EQ(AscendC::Std::get<0>(tensorTraitInit.GetLayout().GetShape()), 10);
  EXPECT_EQ(AscendC::Std::get<1>(tensorTraitInit.GetLayout().GetShape()), 20);
  EXPECT_EQ(AscendC::Std::get<2>(tensorTraitInit.GetLayout().GetShape()), 30);
  EXPECT_EQ(AscendC::Std::get<0>(tensorTraitInit.GetLayout().GetStride()), 1);
  EXPECT_EQ(AscendC::Std::get<1>(tensorTraitInit.GetLayout().GetStride()), 100);
  EXPECT_EQ(AscendC::Std::get<2>(tensorTraitInit.GetLayout().GetStride()), 200);
  
  // SetLayout方法设置TensorTrait
  TensorTraitType tensorTraitSet;
  tensorTraitSet.SetLayout(layoutMake);
  
  EXPECT_EQ(AscendC::Std::get<0>(tensorTraitSet.GetLayout().GetShape()), 10);
  EXPECT_EQ(AscendC::Std::get<1>(tensorTraitSet.GetLayout().GetShape()), 20);
  EXPECT_EQ(AscendC::Std::get<2>(tensorTraitSet.GetLayout().GetShape()), 30);
  EXPECT_EQ(AscendC::Std::get<0>(tensorTraitSet.GetLayout().GetStride()), 1);
  EXPECT_EQ(AscendC::Std::get<1>(tensorTraitSet.GetLayout().GetStride()), 100);
  EXPECT_EQ(AscendC::Std::get<2>(tensorTraitSet.GetLayout().GetStride()), 200);

• TensorTrait和API配合使用示例

  1 2 3 4

  AscendC::LocalTensor<AscendC::TensorTrait<half>> tensor1 = que1.DeQue<AscendC::TensorTrait<half>>(); AscendC::LocalTensor<AscendC::TensorTrait<half>> tensor2 = que2.DeQue<AscendC::TensorTrait<half>>(); AscendC::LocalTensor<AscendC::TensorTrait<half>> tensor3 = que3.AllocTensor<AscendC::TensorTrait<half>>(); Add(tensor3, tensor1, tensor2, tensor3.GetSize());