node {
  name: "placeholder"
  op: "Placeholder"
  attr {
    key: "dtype"
    value {
      type: DT_FLOAT
    }
  }
  attr {
    key: "shape"
    value {
      shape {
        dim {
          size: 1
        }
        dim {
          size: 3
        }
        dim {
          size: 3
        }
        dim {
          size: 1
        }
      }
    }
  }
}
node {
  name: "avgpool2d"
  op: "AvgPool"
  input: "placeholder"
  attr {
    key: "T"
    value {
      type: DT_FLOAT
    }
  }
  attr {
    key: "data_format"
    value {
      s: "NHWC"
    }
  }
  attr {
    key: "ksize"
    value {
      list {
        i: 1
        i: 3
        i: 3
        i: 1
      }
    }
  }
  attr {
    key: "padding"
    value {
      s: "SAME"
    }
  }
  attr {
    key: "strides"
    value {
      list {
        i: 1
        i: 1
        i: 1
        i: 1
      }
    }
  }
}