[Docs] Add NPU support page and add set device.

docs/en/device/npu.md

@@ -0,0 +1,36 @@
+# NPU (HUAWEI Ascend)
+
+## Usage
+
+Please refer to the [building documentation of MMCV](https://mmcv.readthedocs.io/en/latest/get_started/build.html#build-mmcv-full-on-ascend-npu-machine) to install MMCV and [MMEngine](https://mmengine.readthedocs.io/en/latest/get_started/installation.html#build-from-source) on NPU devices.
+
+Here we use 4 NPUs on your computer to train the model with the following command:
+
+```shell
+bash tools/dist_train.sh configs/deeplabv3/deeplabv3_r50-d8_512x1024_40k_cityscapes.py 4
+```
+
+Also, you can use only one NPU to train the model with the following command:
+
+```shell
+python tools/train.py configs/deeplabv3/deeplabv3_r50-d8_512x1024_40k_cityscapes.py
+```
+
+## Models Results
+
+|        Model        | mIoU  | Config                                                                                                                                   | Download                                                                                                                   |
+| :-----------------: | :---: | :--------------------------------------------------------------------------------------------------------------------------------------- | :------------------------------------------------------------------------------------------------------------------------- |
+|   [deeplabv3](<>)   | 78.92 | [config](https://github.com/open-mmlab/mmsegmentation/tree/master/configs/deeplabv3/deeplabv3_r50-d8_512x1024_40k_cityscapes.py)         | [log](https://download.openmmlab.com/mmsegmentation/v0.5/device/npu/deeplabv3_r50-d8_512x1024_40k_cityscapes.log.json)     |
+| [deeplabv3plus](<>) | 79.68 | [config](https://github.com/open-mmlab/mmsegmentation/blob/master/configs/deeplabv3plus/deeplabv3plus_r50-d8_512x1024_40k_cityscapes.py) | [log](https://download.openmmlab.com/mmsegmentation/v0.5/device/npu/deeplabv3plus_r50-d8_512x1024_40k_cityscapes.log.json) |
+|     [hrnet](<>)     | 77.09 | [config](https://github.com/open-mmlab/mmsegmentation/blob/master/configs/hrnet/fcn_hr18_512x1024_40k_cityscapes.py)                     | [log](https://download.openmmlab.com/mmsegmentation/v0.5/device/npu/fcn_hr18_512x1024_40k_cityscapes.log.json)             |
+|      [fcn](<>)      | 72.69 | [config](https://github.com/open-mmlab/mmsegmentation/blob/master/configs/fcn/fcn_r50-d8_512x1024_40k_cityscapes.py)                     | [log](https://download.openmmlab.com/mmsegmentation/v0.5/device/npu/fcn_r50-d8_512x1024_40k_cityscapes.log.json)           |
+|    [pspnet](<>)     | 78.07 | [config](https://github.com/open-mmlab/mmsegmentation/blob/master/configs/pspnet/pspnet_r50-d8_512x1024_80k_cityscapes.py)               | [log](https://download.openmmlab.com/mmsegmentation/v0.5/device/npu/pspnet_r50-d8_512x1024_80k_cityscapes.log.json)        |
+|     [unet](<>)      | 69.00 | [config](https://github.com/open-mmlab/mmsegmentation/blob/master/configs/unet/fcn_unet_s5-d16_4x4_512x1024_160k_cityscapes.py)          | [log](https://download.openmmlab.com/mmsegmentation/v0.5/device/npu/fcn_unet_s5-d16_4x4_512x1024_160k_cityscapes.log.json) |
+|    [apcnet](<>)     | 78.07 | [config](https://github.com/open-mmlab/mmsegmentation/blob/master/configs/apcnet/apcnet_r50-d8_512x1024_40k_cityscapes.py)               | [log](https://download.openmmlab.com/mmsegmentation/v0.5/device/npu/apcnet_r50-d8_512x1024_40k_cityscapes.log.json)        |
+|    [upernet](<>)    | 78.22 | [config](https://github.com/open-mmlab/mmsegmentation/tree/1.x/configs/upernet/upernet_r50_4xb2-40k_cityscapes-512x1024.py)              | [log](https://download.openmmlab.com/mmsegmentation/v0.5/device/npu/upernet_r50_512x1024_40k_cityscapes.log.json)          |
+
+**Notes:**
+
+- If not specially marked, the results on NPU with amp are the basically same as those on the GPU with FP32.
+
+**All above models are provided by Huawei Ascend group.**

docs/en/index.rst

@@ -46,6 +46,11 @@ Welcome to MMSegmentation's documentation!
    changelog.md
    faq.md
 
+.. toctree::
+   :caption: Device Support
+
+   device/npu.md
+
 .. toctree::
    :caption: Switch Language
 

docs/zh_cn/device/npu_zh.md

@@ -0,0 +1,35 @@
+# NPU (华为昇腾)
+
+## 使用方法
+
+首先，请参考[MMCV](https://mmcv.readthedocs.io/zh_CN/latest/get_started/build.html#npu-mmcv-full) 安装带有 NPU 支持的 MMCV与 [MMEngine](https://mmengine.readthedocs.io/en/latest/get_started/installation.html#build-from-source) 。
+使用如下命令，可以利用 4 个 NPU 训练模型（以 deeplabv3为例）：
+
+```shell
+bash tools/dist_train.sh configs/deeplabv3/deeplabv3_r50-d8_512x1024_40k_cityscapes.py 4
+```
+
+或者，使用如下命令，在一个 NPU 上训练模型（以 deeplabv3为例）：
+
+```shell
+python tools/train.py configs/deeplabv3/deeplabv3_r50-d8_512x1024_40k_cityscapes.py
+```
+
+## 经过验证的模型
+
+|        Model        | mIoU  | Config                                                                                                                                   | Download                                                                                                                   |
+| :-----------------: | :---: | :--------------------------------------------------------------------------------------------------------------------------------------- | :------------------------------------------------------------------------------------------------------------------------- |
+|   [deeplabv3](<>)   | 78.92 | [config](https://github.com/open-mmlab/mmsegmentation/tree/master/configs/deeplabv3/deeplabv3_r50-d8_512x1024_40k_cityscapes.py)         | [log](https://download.openmmlab.com/mmsegmentation/v0.5/device/npu/deeplabv3_r50-d8_512x1024_40k_cityscapes.log.json)     |
+| [deeplabv3plus](<>) | 79.68 | [config](https://github.com/open-mmlab/mmsegmentation/blob/master/configs/deeplabv3plus/deeplabv3plus_r50-d8_512x1024_40k_cityscapes.py) | [log](https://download.openmmlab.com/mmsegmentation/v0.5/device/npu/deeplabv3plus_r50-d8_512x1024_40k_cityscapes.log.json) |
+|     [hrnet](<>)     | 77.09 | [config](https://github.com/open-mmlab/mmsegmentation/blob/master/configs/hrnet/fcn_hr18_512x1024_40k_cityscapes.py)                     | [log](https://download.openmmlab.com/mmsegmentation/v0.5/device/npu/fcn_hr18_512x1024_40k_cityscapes.log.json)             |
+|      [fcn](<>)      | 72.69 | [config](https://github.com/open-mmlab/mmsegmentation/blob/master/configs/fcn/fcn_r50-d8_512x1024_40k_cityscapes.py)                     | [log](https://download.openmmlab.com/mmsegmentation/v0.5/device/npu/fcn_r50-d8_512x1024_40k_cityscapes.log.json)           |
+|    [pspnet](<>)     | 78.07 | [config](https://github.com/open-mmlab/mmsegmentation/blob/master/configs/pspnet/pspnet_r50-d8_512x1024_80k_cityscapes.py)               | [log](https://download.openmmlab.com/mmsegmentation/v0.5/device/npu/pspnet_r50-d8_512x1024_80k_cityscapes.log.json)        |
+|     [unet](<>)      | 69.00 | [config](https://github.com/open-mmlab/mmsegmentation/blob/master/configs/unet/fcn_unet_s5-d16_4x4_512x1024_160k_cityscapes.py)          | [log](https://download.openmmlab.com/mmsegmentation/v0.5/device/npu/fcn_unet_s5-d16_4x4_512x1024_160k_cityscapes.log.json) |
+|    [apcnet](<>)     | 78.07 | [config](https://github.com/open-mmlab/mmsegmentation/blob/master/configs/apcnet/apcnet_r50-d8_512x1024_40k_cityscapes.py)               | [log](https://download.openmmlab.com/mmsegmentation/v0.5/device/npu/apcnet_r50-d8_512x1024_40k_cityscapes.log.json)        |
+|    [upernet](<>)    | 78.22 | [config](https://github.com/open-mmlab/mmsegmentation/tree/1.x/configs/upernet/upernet_r50_4xb2-40k_cityscapes-512x1024.py)              | [log](https://download.openmmlab.com/mmsegmentation/v0.5/device/npu/upernet_r50_512x1024_40k_cityscapes.log.json)          |
+
+**注意:**
+
+- 如果没有特别标记，NPU 上的结果与使用 FP32 的 GPU 上的结果结果相同。
+
+**以上所有模型权重及训练日志均由华为昇腾团队提供**

docs/zh_cn/index.rst

@@ -46,6 +46,11 @@
    changelog.md
    faq.md
 
+.. toctree::
+   :caption: 设备支持
+
+   device/npu_zh.md
+
 .. toctree::
    :caption: 语言切换
 

mmseg/utils/util_distribution.py

@@ -37,6 +37,7 @@ def build_dp(model, device='cuda', dim=0, *args, **kwargs):
         assert digit_version(mmcv.__version__) >= digit_version('1.7.0'), \
                 'Please use MMCV >= 1.7.0 for NPU training!'
         from mmcv.device.npu import NPUDataParallel
+        torch.npu.set_device(kwargs['device_ids'][0])
         torch.npu.set_compile_mode(jit_compile=False)
         dp_factory['npu'] = NPUDataParallel
         model = model.npu()