SetDeqScale

功能说明

设置DEQSCALE寄存器的值。

函数原型

• 用于AddDeqRelu指令与Cast指令的s322f16场景

  1	__aicore__ inline void SetDeqScale(half scale)

• 用于CastDeq（isVecDeq=false）的场景

  1	__aicore__ inline void SetDeqScale(float scale, int16_t offset, bool signMode)

• 用于CastDeq（isVecDeq=true）的场景

  1 2	template <typename T> __aicore__ inline void SetDeqScale(const LocalTensor<T>& vdeqTensor, const VdeqInfo& vdeqInfo)

参数说明

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const uint8_t VDEQ_TENSOR_SIZE = 16;

struct VdeqInfo {
    __aicore__ VdeqInfo() {}
    __aicore__ VdeqInfo(const float vdeqScaleIn[VDEQ_TENSOR_SIZE], const int16_t vdeqOffsetIn[VDEQ_TENSOR_SIZE],
        const bool vdeqSignModeIn[VDEQ_TENSOR_SIZE])
    {
        for (int32_t i = 0; i < VDEQ_TENSOR_SIZE; ++i) {
            vdeqScale[i] = vdeqScaleIn[i];
            vdeqOffset[i] = vdeqOffsetIn[i];
            vdeqSignMode[i] = vdeqSignModeIn[i];
        }
    }

    float vdeqScale[VDEQ_TENSOR_SIZE] = { 0 };
    int16_t vdeqOffset[VDEQ_TENSOR_SIZE] = { 0 };
    bool vdeqSignMode[VDEQ_TENSOR_SIZE] = { 0 };
};

返回值

无

支持的型号

Atlas推理系列产品AI Core

Atlas A2训练系列产品/Atlas 800I A2推理产品

约束说明

无

调用示例

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AscendC::LocalTensor<int8_t> dstLocal;
AscendC::LocalTensor<int16_t> srcLocal;
AscendC::LocalTensor<uint64_t> tmpBuffer;
uint32_t srcSize = 256;
// Cast
AscendC::LocalTensor<half> castDstLocal;
AscendC::LocalTensor<int32_t> castSrcLocal;
half scale = 1.0;
AscendC::SetDeqScale(scale);
AscendC::Cast(castDstLocal, castSrcLocal, AscendC::RoundMode::CAST_NONE, srcSize);
// CastDeq
float scale = 1.0;
int16_t offset = 0;
bool signMode = true;
AscendC::SetDeqScale(scale, offset, signMode);
AscendC::CastDeq<int8_t, int16_t, false, false>(dstLocal, srcLocal, srcSize);
// CastVdeq
float vdeqScale[16] = { 0 };
int16_t vdeqOffset[16] = { 0 };
bool vdeqSignMode[16] = { 0 };
for (int i = 0; i < 16; i++) {
    vdeqScale[i] = 1.0;
    vdeqOffset[i] = 0;
    vdeqSignMode[i] = true;
}
AscendC::VdeqInfo vdeqInfo(vdeqScale, vdeqOffset, vdeqSignMode);
AscendC::SetDeqScale<uint64_t>(tmpBuffer, vdeqInfo);
AscendC::CastDeq<int8_t, int16_t, true, false>(dstLocal, srcLocal, srcSize);