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GetAscendAntiQuantMaxMinTmpSize

Function Description

To perform AscendAntiQuant computation in the kernel, developers need to reserve or allocate the temporary space. This API is used to obtain the maximum and minimum sizes of the temporary space to be reserved or allocated on the host. Developers can select a proper size within this range as the tiling parameter and pass it to the kernel.

  • To ensure correct functions, the temporary space to be reserved or allocated cannot be less than the minimum temporary space.
  • Within the range between the minimum and maximum, as the temporary space increases, the API computing performance in the kernel can be optimized to some extent. To achieve better performance, reserve or allocate the space based on the actual buffer usage.

Prototype

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void GetAscendAntiQuantMaxMinTmpSize(const ge::Shape &srcShape, const ge::Shape &scaleShape, bool isTranspose, ge::DataType inputDataType, ge::DataType outputDataType, uint32_t &maxValue, uint32_t &minValue)

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uint32_t GetAscendAntiQuantMaxTmpSize(const ge::Shape &srcShape, const ge::Shape &scaleShape, bool isTranspose, ge::DataType inputDataType, ge::DataType outputDataType)

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uint32_t GetAscendAntiQuantMinTmpSize(const ge::Shape &srcShape, const ge::Shape &scaleShape, bool isTranspose, ge::DataType inputDataType, ge::DataType outputDataType)

Parameters

Table 1 API parameters

Parameter

Input/Output

Description

srcShape

Input

Shape of the input src.

scaleShape

Input

Shape of the input scale.

isTranspose

Input

Whether to apply transpose.

inputDataType

Input

Input data type.

outputDataType

Input

Output data type.

maxValue

Output

Maximum size of the temporary space required by AscendAntiQuant computation. Any space exceeding this value will not be utilized by the API. Within the range between the minimum and maximum, as the temporary space increases, the API computing performance in the kernel can be optimized to some extent. To achieve better performance, reserve or allocate the space based on the actual buffer usage. If the maximum space size is 0, no temporary space is required.

NOTE:

maxValue is for reference only and may be larger than the available space of the Unified Buffer. In this case, select a proper temporary space size based on the remaining space of the Unified Buffer.

minValue

Output

Minimum size of the temporary space required by AscendAntiQuant computation. To ensure correct functions, the size of the temporary space to be reserved or allocated during API computation cannot be less than the value of this parameter. If the minimum space size is 0, no temporary space is required.

Returns

GetAscendAntiQuantMaxMinTmpSize: none

GetAscendAntiQuantMaxTmpSize: maximum size of the temporary space required by AscendAntiQuant computation.

GetAscendAntiQuantMinTmpSize: minimum size of the temporary space required by AscendAntiQuant computation.

Availability

Example

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uint32_t maxValue = 0;
uint32_t minValue = 0;
std::vector<int64_t> srcDims = { 64, 512 };
auto srcShape = ge::Shape(srcDims);
std::vector<int64_t> scaleDims = { 1, 512 };
auto scaleShape = ge::Shape(scaleDims);
bool isTranspose = false;
AscendC::GetAscendAntiQuantMaxMinTmpSize(srcShape, scaleShape, isTranspose, ge::DT_INT8, ge::DT_BF16, maxValue, minValue);