SetHF32Mode

Supported Products

Product	Supported/Unsupported
Atlas A3 training products/Atlas A3 inference products	√
Atlas A2 training products/Atlas A2 inference products	√
Atlas 200I/500 A2 inference products	√
Atlas inference product's AI Core	x
Atlas inference product's Vector Core	x
Atlas training products	x

Function Usage

Sets whether to enable the HF32 mode for the MMAD computation. After this mode is enabled, FP32 data in L0A/L0B is rounded to HF32 before participating in the MMAD computation.

Prototype

__aicore__ inline void SetHF32Mode(bool hf32Mode)

Parameters

**Table 1** Parameters
Parameter	Input/Output	Description
hf32Mode	Input	Input parameter for controlling the MMAD HF32 mode. The value is of the Boolean type. The options are as follows: true: The FP32 data in L0A/L0B is rounded off to HF32 before matrix multiplication. false: The regular FP32 matrix multiplication is performed.

Returns

None

Constraints

None

Example

bool hf32Mode = true;
AscendC::SetHF32Mode(hf32Mode);

Parent topic: Matrix Computation