---
title: 定义
description: "```"
url: https://www.hiascend.com/document/detail/zh/canncommercial/latest/API/ascendtb/ascendtb_01_0248.html
sourcePath: /source/zh/canncommercial/900/API/ascendtb/ascendtb_01_0248.html
indexId: d7fc696680b585fa7ab5e2f757f2c62da898eda081ebcca7d57cb194ac90123764
---
# 定义

```
struct RmsNormParam {
    enum RmsNormType : int {
        RMS_NORM_UNDEFINED = 0,
        RMS_NORM_NORM,
        RMS_NORM_PRENORM,
        RMS_NORM_POSTNORM,
    };
    enum PrecisionMode : int {
        HIGH_PRECISION_MODE = 0,
        HIGH_PERFORMANCE_MODE,
    }
    enum ModelType : int {
        LLAMA_MODEL = 0,  
        GEMMA_MODEL,   
    };
    struct NormParam {
        QuantType quantType = QUANT_UNQUANT;
        float epsilon = 1e-5;
        double layerNormEps = 1e-5;
        bool rstd = false;
        PrecisionMode precisionMode = HIGH_PRECISION_MODE;
        ModelType modelType = LLAMA_MODEL;
        DynamicQuantType dynamicQuantType = DYNAMIC_QUANT_UNDEFINED;
        uint8_t rsv[32] = {0};
    };
    struct PreNormParam {
        QuantType quantType = QUANT_UNQUANT;
        float epsilon = 1e-5;
        bool hasBias = false;
        uint8_t rsv[23] = {0};
    };
    struct PostNormParam {
        QuantType quantType = QUANT_UNQUANT;
        float epsilon = 1e-5;
        bool hasBias = false;
        uint8_t rsv[23] = {0};
    };
    RmsNormType layerType = RMS_NORM_UNDEFINED;
    NormParam normParam;
    PreNormParam preNormParam;
    PostNormParam postNormParam;
    uint8_t rsv[8] = {0};
};
```