---
title: atb_graph_op.cpp
description: "```"
url: https://www.hiascend.com/document/detail/zh/canncommercial/latest/API/ascendtb/ascendtb_0062.html
sourcePath: /source/zh/canncommercial/900/API/ascendtb/ascendtb_0062.html
indexId: 122b66c1798190fda76ced89edd0d0c39d80c167700c242ba3e28607839952b461
---
# atb_graph_op.cpp

```
#include "atb/atb_graph_op.h"
#include "utils/utils.h"

atb::Status CreateGraphOperation(atb::Operation **operation)
{
    // 构图流程
    // 图算子的输入a,b,c,d
    // 计算公式：(a+b) + (c+d)
    // 输入是4个参数，输出是1个参数，有3个add算子，中间产生的临时输出是2个
    atb::GraphParam opGraph;

    opGraph.inTensorNum = 4;
    opGraph.outTensorNum = 1;
    opGraph.internalTensorNum = 2;
    opGraph.nodes.resize(3);

    enum InTensorId
    { // 定义各TensorID
        IN_TENSOR_A = 0,
        IN_TENSOR_B,
        IN_TENSOR_C,
        IN_TENSOR_D,
        ADD3_OUT,
        ADD1_OUT,
        ADD2_OUT
    };

    size_t nodeId = 0;
    atb::Node &addNode = opGraph.nodes.at(nodeId++);
    atb::Node &addNode2 = opGraph.nodes.at(nodeId++);
    atb::Node &addNode3 = opGraph.nodes.at(nodeId++);

    atb::Operation *op = nullptr;
    atb::infer::ElewiseParam addParam;
    addParam.elewiseType = atb::infer::ElewiseParam::ElewiseType::ELEWISE_ADD;
    auto status = atb::CreateOperation(addParam, &addNode.operation);
    CHECK_RET(status, "addParam CreateOperation failed. status: " + std::to_string(status));
    addNode.inTensorIds = {IN_TENSOR_A, IN_TENSOR_B};
    addNode.outTensorIds = {ADD1_OUT};

    atb::infer::ElewiseParam addParam2;
    addParam2.elewiseType = atb::infer::ElewiseParam::ElewiseType::ELEWISE_ADD;
    status = atb::CreateOperation(addParam2, &addNode2.operation);
    CHECK_RET(status, "addParam2 CreateOperation failed. status: " + std::to_string(status));
    addNode2.inTensorIds = {IN_TENSOR_C, IN_TENSOR_D};
    addNode2.outTensorIds = {ADD2_OUT};

    atb::infer::ElewiseParam addParam3;
    addParam3.elewiseType = atb::infer::ElewiseParam::ElewiseType::ELEWISE_ADD;
    status = CreateOperation(addParam3, &addNode3.operation);
    CHECK_RET(status, "addParam3 CreateOperation failed. status: " + std::to_string(status));
    addNode3.inTensorIds = {ADD1_OUT, ADD2_OUT};
    addNode3.outTensorIds = {ADD3_OUT};

    status = atb::CreateOperation(opGraph, operation);
    CHECK_RET(status, "GraphParam CreateOperation failed. status: " + std::to_string(status));

    return atb::NO_ERROR;
}
```