From 8539cc6a72aab1297abcd3bd7482612f81a88466 Mon Sep 17 00:00:00 2001
From: lichen <lichen79@huawei.com>
Date: Tue, 27 Sep 2022 15:49:59 +0800
Subject: [PATCH] code_docs_fix_parallel_api

---
 docs/api/api_python/mindspore.communication.rst        | 4 ++--
 mindspore/python/mindspore/communication/management.py | 8 +++++---
 2 files changed, 7 insertions(+), 5 deletions(-)

diff --git a/docs/api/api_python/mindspore.communication.rst b/docs/api/api_python/mindspore.communication.rst
index 14d2f501867..da3562ea51e 100644
--- a/docs/api/api_python/mindspore.communication.rst
+++ b/docs/api/api_python/mindspore.communication.rst
@@ -18,7 +18,7 @@ mindspore.communication
 
 .. py:function:: mindspore.communication.init(backend_name=None)
 
-    初始化通信服务需要的分布式后端，例如 `HCCL` 或 `NCCL` 服务。
+    初始化通信服务需要的分布式后端，例如 `HCCL` 或 `NCCL` 服务。通常在分布式并行场景下使用，并在使用通信服务前设置。
 
     .. note::
         - HCCL的全称是华为集合通信库（Huawei Collective Communication Library）。
@@ -27,7 +27,7 @@ mindspore.communication
         - 在运行以下示例之前，用户需要预设通信环境变量，请查看mindspore.communication的文档注释。
 
     参数：
-        - **backend_name** (str) - 分布式后端的名称，可选HCCL或NCCL。如果未设置则根据硬件平台类型（device_target）进行推断，默认值为None。
+        - **backend_name** (str) - 分布式后端的名称，可选HCCL或NCCL。在Ascend硬件平台下，应使用HCCL，在GPU硬件平台下，应使用NCCL。如果未设置则根据硬件平台类型（device_target）自动进行推断，默认值为None。
 
     异常：
         - **TypeError** - 参数 `backend_name` 不是字符串。
diff --git a/mindspore/python/mindspore/communication/management.py b/mindspore/python/mindspore/communication/management.py
index d90dd7b1376..8eda032ec39 100755
--- a/mindspore/python/mindspore/communication/management.py
+++ b/mindspore/python/mindspore/communication/management.py
@@ -83,7 +83,8 @@ def _check_parallel_envs():
 
 def init(backend_name=None):
     """
-    Initialize distributed backend, e.g. HCCL/NCCL, it is required before using the communication service.
+    Initialize distributed backends required by communication services, e.g. HCCL/NCCL. It is usually used in
+    distributed parallel scenarios and set before using communication services.
 
     Note:
         - The full name of HCCL is Huawei Collective Communication Library.
@@ -93,8 +94,9 @@ def init(backend_name=None):
         before running the following example, please see the docstring of the mindspore.communication.
 
     Args:
-        backend_name (str): Backend, using HCCL/NCCL/MCCL. If the `backend_name` is None, system will recognize
-            `device_target` by devices. Default: None.
+        backend_name (str): Backend, using HCCL/NCCL/MCCL. HCCL should be used for Ascend hardware platforms and
+                            NCCL for GPU hardware platforms. If not set, inference is automatically made based on the
+                            hardware platform type (device_target). Default: None.
 
     Raises:
         TypeError: If `backend_name` is not a string.