diff --git a/configs/_base_/models/ann_r50-d8.py b/configs/_base_/models/ann_r50-d8.py
index c2287b4790..07ed0f3c6f 100644
--- a/configs/_base_/models/ann_r50-d8.py
+++ b/configs/_base_/models/ann_r50-d8.py
@@ -22,7 +22,7 @@
         project_channels=256,
         query_scales=(1, ),
         key_pool_scales=(1, 3, 6, 8),
-        drop_out_ratio=0.1,
+        dropout_ratio=0.1,
         num_classes=19,
         norm_cfg=norm_cfg,
         align_corners=False,
@@ -35,7 +35,7 @@
         channels=256,
         num_convs=1,
         concat_input=False,
-        drop_out_ratio=0.1,
+        dropout_ratio=0.1,
         num_classes=19,
         norm_cfg=norm_cfg,
         align_corners=False,
diff --git a/configs/_base_/models/ccnet_r50-d8.py b/configs/_base_/models/ccnet_r50-d8.py
index 9f2794c33c..28f7360a21 100644
--- a/configs/_base_/models/ccnet_r50-d8.py
+++ b/configs/_base_/models/ccnet_r50-d8.py
@@ -20,7 +20,7 @@
         in_index=3,
         channels=512,
         recurrence=2,
-        drop_out_ratio=0.1,
+        dropout_ratio=0.1,
         num_classes=19,
         norm_cfg=norm_cfg,
         align_corners=False,
@@ -33,7 +33,7 @@
         channels=256,
         num_convs=1,
         concat_input=False,
-        drop_out_ratio=0.1,
+        dropout_ratio=0.1,
         num_classes=19,
         norm_cfg=norm_cfg,
         align_corners=False,
diff --git a/configs/_base_/models/danet_r50-d8.py b/configs/_base_/models/danet_r50-d8.py
index 76a27054ed..65eb170860 100644
--- a/configs/_base_/models/danet_r50-d8.py
+++ b/configs/_base_/models/danet_r50-d8.py
@@ -20,7 +20,7 @@
         in_index=3,
         channels=512,
         pam_channels=64,
-        drop_out_ratio=0.1,
+        dropout_ratio=0.1,
         num_classes=19,
         norm_cfg=norm_cfg,
         align_corners=False,
@@ -33,7 +33,7 @@
         channels=256,
         num_convs=1,
         concat_input=False,
-        drop_out_ratio=0.1,
+        dropout_ratio=0.1,
         num_classes=19,
         norm_cfg=norm_cfg,
         align_corners=False,
diff --git a/configs/_base_/models/deeplabv3_r50-d8.py b/configs/_base_/models/deeplabv3_r50-d8.py
index 00c1f8796d..a9f319c2b5 100644
--- a/configs/_base_/models/deeplabv3_r50-d8.py
+++ b/configs/_base_/models/deeplabv3_r50-d8.py
@@ -20,7 +20,7 @@
         in_index=3,
         channels=512,
         dilations=(1, 12, 24, 36),
-        drop_out_ratio=0.1,
+        dropout_ratio=0.1,
         num_classes=19,
         norm_cfg=norm_cfg,
         align_corners=False,
@@ -33,7 +33,7 @@
         channels=256,
         num_convs=1,
         concat_input=False,
-        drop_out_ratio=0.1,
+        dropout_ratio=0.1,
         num_classes=19,
         norm_cfg=norm_cfg,
         align_corners=False,
diff --git a/configs/_base_/models/deeplabv3plus_r50-d8.py b/configs/_base_/models/deeplabv3plus_r50-d8.py
index f930b154f5..f74a1534fb 100644
--- a/configs/_base_/models/deeplabv3plus_r50-d8.py
+++ b/configs/_base_/models/deeplabv3plus_r50-d8.py
@@ -22,7 +22,7 @@
         dilations=(1, 12, 24, 36),
         c1_in_channels=256,
         c1_channels=48,
-        drop_out_ratio=0.1,
+        dropout_ratio=0.1,
         num_classes=19,
         norm_cfg=norm_cfg,
         align_corners=False,
@@ -35,7 +35,7 @@
         channels=256,
         num_convs=1,
         concat_input=False,
-        drop_out_ratio=0.1,
+        dropout_ratio=0.1,
         num_classes=19,
         norm_cfg=norm_cfg,
         align_corners=False,
diff --git a/configs/_base_/models/encnet_r50-d8.py b/configs/_base_/models/encnet_r50-d8.py
index 46fffa1f8c..c643cea62a 100644
--- a/configs/_base_/models/encnet_r50-d8.py
+++ b/configs/_base_/models/encnet_r50-d8.py
@@ -22,7 +22,7 @@
         num_codes=32,
         use_se_loss=True,
         add_lateral=False,
-        drop_out_ratio=0.1,
+        dropout_ratio=0.1,
         num_classes=19,
         norm_cfg=norm_cfg,
         align_corners=False,
@@ -37,7 +37,7 @@
         channels=256,
         num_convs=1,
         concat_input=False,
-        drop_out_ratio=0.1,
+        dropout_ratio=0.1,
         num_classes=19,
         norm_cfg=norm_cfg,
         align_corners=False,
diff --git a/configs/_base_/models/fcn_hr18.py b/configs/_base_/models/fcn_hr18.py
index e2583a2ac8..8293e06536 100644
--- a/configs/_base_/models/fcn_hr18.py
+++ b/configs/_base_/models/fcn_hr18.py
@@ -41,7 +41,7 @@
         kernel_size=1,
         num_convs=1,
         concat_input=False,
-        drop_out_ratio=-1,
+        dropout_ratio=-1,
         num_classes=19,
         norm_cfg=norm_cfg,
         align_corners=False,
diff --git a/configs/_base_/models/fcn_r50-d8.py b/configs/_base_/models/fcn_r50-d8.py
index 08546755c9..97a11ec961 100644
--- a/configs/_base_/models/fcn_r50-d8.py
+++ b/configs/_base_/models/fcn_r50-d8.py
@@ -21,7 +21,7 @@
         channels=512,
         num_convs=2,
         concat_input=True,
-        drop_out_ratio=0.1,
+        dropout_ratio=0.1,
         num_classes=19,
         norm_cfg=norm_cfg,
         align_corners=False,
@@ -34,7 +34,7 @@
         channels=256,
         num_convs=1,
         concat_input=False,
-        drop_out_ratio=0.1,
+        dropout_ratio=0.1,
         num_classes=19,
         norm_cfg=norm_cfg,
         align_corners=False,
diff --git a/configs/_base_/models/gcnet_r50-d8.py b/configs/_base_/models/gcnet_r50-d8.py
index 9057687c06..b679be1254 100644
--- a/configs/_base_/models/gcnet_r50-d8.py
+++ b/configs/_base_/models/gcnet_r50-d8.py
@@ -22,7 +22,7 @@
         ratio=1 / 4.,
         pooling_type='att',
         fusion_types=('channel_add', ),
-        drop_out_ratio=0.1,
+        dropout_ratio=0.1,
         num_classes=19,
         norm_cfg=norm_cfg,
         align_corners=False,
@@ -35,7 +35,7 @@
         channels=256,
         num_convs=1,
         concat_input=False,
-        drop_out_ratio=0.1,
+        dropout_ratio=0.1,
         num_classes=19,
         norm_cfg=norm_cfg,
         align_corners=False,
diff --git a/configs/_base_/models/nonlocal_r50-d8.py b/configs/_base_/models/nonlocal_r50-d8.py
index 7fa88f9a59..64dbeb080d 100644
--- a/configs/_base_/models/nonlocal_r50-d8.py
+++ b/configs/_base_/models/nonlocal_r50-d8.py
@@ -19,7 +19,7 @@
         in_channels=2048,
         in_index=3,
         channels=512,
-        drop_out_ratio=0.1,
+        dropout_ratio=0.1,
         reduction=2,
         use_scale=True,
         mode='embedded_gaussian',
@@ -35,7 +35,7 @@
         channels=256,
         num_convs=1,
         concat_input=False,
-        drop_out_ratio=0.1,
+        dropout_ratio=0.1,
         num_classes=19,
         norm_cfg=norm_cfg,
         align_corners=False,
diff --git a/configs/_base_/models/ocrnet_hr18.py b/configs/_base_/models/ocrnet_hr18.py
index 4053daa0b0..fd88780b60 100644
--- a/configs/_base_/models/ocrnet_hr18.py
+++ b/configs/_base_/models/ocrnet_hr18.py
@@ -43,7 +43,7 @@
             kernel_size=1,
             num_convs=1,
             concat_input=False,
-            drop_out_ratio=-1,
+            dropout_ratio=-1,
             num_classes=19,
             norm_cfg=norm_cfg,
             align_corners=False,
@@ -56,7 +56,7 @@
             input_transform='resize_concat',
             channels=512,
             ocr_channels=256,
-            drop_out_ratio=-1,
+            dropout_ratio=-1,
             num_classes=19,
             norm_cfg=norm_cfg,
             align_corners=False,
diff --git a/configs/_base_/models/psanet_r50-d8.py b/configs/_base_/models/psanet_r50-d8.py
index 170b48f457..1b45588268 100644
--- a/configs/_base_/models/psanet_r50-d8.py
+++ b/configs/_base_/models/psanet_r50-d8.py
@@ -25,7 +25,7 @@
         shrink_factor=2,
         normalization_factor=1.0,
         psa_softmax=True,
-        drop_out_ratio=0.1,
+        dropout_ratio=0.1,
         num_classes=19,
         norm_cfg=norm_cfg,
         align_corners=False,
@@ -38,7 +38,7 @@
         channels=256,
         num_convs=1,
         concat_input=False,
-        drop_out_ratio=0.1,
+        dropout_ratio=0.1,
         num_classes=19,
         norm_cfg=norm_cfg,
         align_corners=False,
diff --git a/configs/_base_/models/pspnet_r50-d8.py b/configs/_base_/models/pspnet_r50-d8.py
index c5bb885c58..cf9d8ce0a8 100644
--- a/configs/_base_/models/pspnet_r50-d8.py
+++ b/configs/_base_/models/pspnet_r50-d8.py
@@ -20,7 +20,7 @@
         in_index=3,
         channels=512,
         pool_scales=(1, 2, 3, 6),
-        drop_out_ratio=0.1,
+        dropout_ratio=0.1,
         num_classes=19,
         norm_cfg=norm_cfg,
         align_corners=False,
@@ -33,7 +33,7 @@
         channels=256,
         num_convs=1,
         concat_input=False,
-        drop_out_ratio=0.1,
+        dropout_ratio=0.1,
         num_classes=19,
         norm_cfg=norm_cfg,
         align_corners=False,
diff --git a/configs/_base_/models/upernet_r50.py b/configs/_base_/models/upernet_r50.py
index 7d736f6bcf..19cf451359 100644
--- a/configs/_base_/models/upernet_r50.py
+++ b/configs/_base_/models/upernet_r50.py
@@ -20,7 +20,7 @@
         in_index=[0, 1, 2, 3],
         pool_scales=(1, 2, 3, 6),
         channels=512,
-        drop_out_ratio=0.1,
+        dropout_ratio=0.1,
         num_classes=19,
         norm_cfg=norm_cfg,
         align_corners=False,
@@ -33,7 +33,7 @@
         channels=256,
         num_convs=1,
         concat_input=False,
-        drop_out_ratio=0.1,
+        dropout_ratio=0.1,
         num_classes=19,
         norm_cfg=norm_cfg,
         align_corners=False,
diff --git a/configs/ocrnet/ocrnet_hr18_512x512_160k_ade20k.py b/configs/ocrnet/ocrnet_hr18_512x512_160k_ade20k.py
index fe5d20ffb0..a3c86e18ea 100644
--- a/configs/ocrnet/ocrnet_hr18_512x512_160k_ade20k.py
+++ b/configs/ocrnet/ocrnet_hr18_512x512_160k_ade20k.py
@@ -13,7 +13,7 @@
         kernel_size=1,
         num_convs=1,
         concat_input=False,
-        drop_out_ratio=-1,
+        dropout_ratio=-1,
         num_classes=150,
         norm_cfg=norm_cfg,
         align_corners=False,
@@ -26,7 +26,7 @@
         input_transform='resize_concat',
         channels=512,
         ocr_channels=256,
-        drop_out_ratio=-1,
+        dropout_ratio=-1,
         num_classes=150,
         norm_cfg=norm_cfg,
         align_corners=False,
diff --git a/configs/ocrnet/ocrnet_hr18_512x512_20k_voc12aug.py b/configs/ocrnet/ocrnet_hr18_512x512_20k_voc12aug.py
index 71e70dcec1..ab9d6446c9 100644
--- a/configs/ocrnet/ocrnet_hr18_512x512_20k_voc12aug.py
+++ b/configs/ocrnet/ocrnet_hr18_512x512_20k_voc12aug.py
@@ -14,7 +14,7 @@
         kernel_size=1,
         num_convs=1,
         concat_input=False,
-        drop_out_ratio=-1,
+        dropout_ratio=-1,
         num_classes=21,
         norm_cfg=norm_cfg,
         align_corners=False,
@@ -27,7 +27,7 @@
         input_transform='resize_concat',
         channels=512,
         ocr_channels=256,
-        drop_out_ratio=-1,
+        dropout_ratio=-1,
         num_classes=21,
         norm_cfg=norm_cfg,
         align_corners=False,
diff --git a/configs/ocrnet/ocrnet_hr18_512x512_40k_voc12aug.py b/configs/ocrnet/ocrnet_hr18_512x512_40k_voc12aug.py
index b3fd747211..df79a9cf13 100644
--- a/configs/ocrnet/ocrnet_hr18_512x512_40k_voc12aug.py
+++ b/configs/ocrnet/ocrnet_hr18_512x512_40k_voc12aug.py
@@ -14,7 +14,7 @@
         kernel_size=1,
         num_convs=1,
         concat_input=False,
-        drop_out_ratio=-1,
+        dropout_ratio=-1,
         num_classes=21,
         norm_cfg=norm_cfg,
         align_corners=False,
@@ -27,7 +27,7 @@
         input_transform='resize_concat',
         channels=512,
         ocr_channels=256,
-        drop_out_ratio=-1,
+        dropout_ratio=-1,
         num_classes=21,
         norm_cfg=norm_cfg,
         align_corners=False,
diff --git a/configs/ocrnet/ocrnet_hr18_512x512_80k_ade20k.py b/configs/ocrnet/ocrnet_hr18_512x512_80k_ade20k.py
index e41eaf8ac5..6ad67722a5 100644
--- a/configs/ocrnet/ocrnet_hr18_512x512_80k_ade20k.py
+++ b/configs/ocrnet/ocrnet_hr18_512x512_80k_ade20k.py
@@ -13,7 +13,7 @@
         kernel_size=1,
         num_convs=1,
         concat_input=False,
-        drop_out_ratio=-1,
+        dropout_ratio=-1,
         num_classes=150,
         norm_cfg=norm_cfg,
         align_corners=False,
@@ -26,7 +26,7 @@
         input_transform='resize_concat',
         channels=512,
         ocr_channels=256,
-        drop_out_ratio=-1,
+        dropout_ratio=-1,
         num_classes=150,
         norm_cfg=norm_cfg,
         align_corners=False,
diff --git a/configs/ocrnet/ocrnet_hr48_512x1024_160k_cityscapes.py b/configs/ocrnet/ocrnet_hr48_512x1024_160k_cityscapes.py
index 70c1ce5b5b..c094391b1d 100644
--- a/configs/ocrnet/ocrnet_hr48_512x1024_160k_cityscapes.py
+++ b/configs/ocrnet/ocrnet_hr48_512x1024_160k_cityscapes.py
@@ -18,7 +18,7 @@
             num_convs=1,
             norm_cfg=norm_cfg,
             concat_input=False,
-            drop_out_ratio=-1,
+            dropout_ratio=-1,
             num_classes=19,
             align_corners=False,
             loss_decode=dict(
@@ -31,7 +31,7 @@
             input_transform='resize_concat',
             in_index=(0, 1, 2, 3),
             norm_cfg=norm_cfg,
-            drop_out_ratio=-1,
+            dropout_ratio=-1,
             num_classes=19,
             align_corners=False,
             loss_decode=dict(
diff --git a/configs/ocrnet/ocrnet_hr48_512x1024_40k_cityscapes.py b/configs/ocrnet/ocrnet_hr48_512x1024_40k_cityscapes.py
index cd777e89bf..0aada9d8dc 100644
--- a/configs/ocrnet/ocrnet_hr48_512x1024_40k_cityscapes.py
+++ b/configs/ocrnet/ocrnet_hr48_512x1024_40k_cityscapes.py
@@ -18,7 +18,7 @@
             num_convs=1,
             norm_cfg=norm_cfg,
             concat_input=False,
-            drop_out_ratio=-1,
+            dropout_ratio=-1,
             num_classes=19,
             align_corners=False,
             loss_decode=dict(
@@ -31,7 +31,7 @@
             input_transform='resize_concat',
             in_index=(0, 1, 2, 3),
             norm_cfg=norm_cfg,
-            drop_out_ratio=-1,
+            dropout_ratio=-1,
             num_classes=19,
             align_corners=False,
             loss_decode=dict(
diff --git a/configs/ocrnet/ocrnet_hr48_512x1024_80k_cityscapes.py b/configs/ocrnet/ocrnet_hr48_512x1024_80k_cityscapes.py
index 6ed60096a1..1b2e009439 100644
--- a/configs/ocrnet/ocrnet_hr48_512x1024_80k_cityscapes.py
+++ b/configs/ocrnet/ocrnet_hr48_512x1024_80k_cityscapes.py
@@ -18,7 +18,7 @@
             num_convs=1,
             norm_cfg=norm_cfg,
             concat_input=False,
-            drop_out_ratio=-1,
+            dropout_ratio=-1,
             num_classes=19,
             align_corners=False,
             loss_decode=dict(
@@ -31,7 +31,7 @@
             input_transform='resize_concat',
             in_index=(0, 1, 2, 3),
             norm_cfg=norm_cfg,
-            drop_out_ratio=-1,
+            dropout_ratio=-1,
             num_classes=19,
             align_corners=False,
             loss_decode=dict(
diff --git a/configs/ocrnet/ocrnet_hr48_512x512_160k_ade20k.py b/configs/ocrnet/ocrnet_hr48_512x512_160k_ade20k.py
index f6cd20e642..3b3e8af953 100644
--- a/configs/ocrnet/ocrnet_hr48_512x512_160k_ade20k.py
+++ b/configs/ocrnet/ocrnet_hr48_512x512_160k_ade20k.py
@@ -18,7 +18,7 @@
             num_convs=1,
             norm_cfg=norm_cfg,
             concat_input=False,
-            drop_out_ratio=-1,
+            dropout_ratio=-1,
             num_classes=150,
             align_corners=False,
             loss_decode=dict(
@@ -31,7 +31,7 @@
             input_transform='resize_concat',
             in_index=(0, 1, 2, 3),
             norm_cfg=norm_cfg,
-            drop_out_ratio=-1,
+            dropout_ratio=-1,
             num_classes=150,
             align_corners=False,
             loss_decode=dict(
diff --git a/configs/ocrnet/ocrnet_hr48_512x512_20k_voc12aug.py b/configs/ocrnet/ocrnet_hr48_512x512_20k_voc12aug.py
index 3149cfc371..c2dd6d1158 100644
--- a/configs/ocrnet/ocrnet_hr48_512x512_20k_voc12aug.py
+++ b/configs/ocrnet/ocrnet_hr48_512x512_20k_voc12aug.py
@@ -18,7 +18,7 @@
             num_convs=1,
             norm_cfg=norm_cfg,
             concat_input=False,
-            drop_out_ratio=-1,
+            dropout_ratio=-1,
             num_classes=21,
             align_corners=False,
             loss_decode=dict(
@@ -31,7 +31,7 @@
             input_transform='resize_concat',
             in_index=(0, 1, 2, 3),
             norm_cfg=norm_cfg,
-            drop_out_ratio=-1,
+            dropout_ratio=-1,
             num_classes=21,
             align_corners=False,
             loss_decode=dict(
diff --git a/configs/ocrnet/ocrnet_hr48_512x512_40k_voc12aug.py b/configs/ocrnet/ocrnet_hr48_512x512_40k_voc12aug.py
index f97260039b..89e6309f55 100644
--- a/configs/ocrnet/ocrnet_hr48_512x512_40k_voc12aug.py
+++ b/configs/ocrnet/ocrnet_hr48_512x512_40k_voc12aug.py
@@ -18,7 +18,7 @@
             num_convs=1,
             norm_cfg=norm_cfg,
             concat_input=False,
-            drop_out_ratio=-1,
+            dropout_ratio=-1,
             num_classes=21,
             align_corners=False,
             loss_decode=dict(
@@ -31,7 +31,7 @@
             input_transform='resize_concat',
             in_index=(0, 1, 2, 3),
             norm_cfg=norm_cfg,
-            drop_out_ratio=-1,
+            dropout_ratio=-1,
             num_classes=21,
             align_corners=False,
             loss_decode=dict(
diff --git a/configs/ocrnet/ocrnet_hr48_512x512_80k_ade20k.py b/configs/ocrnet/ocrnet_hr48_512x512_80k_ade20k.py
index 94dbe90298..04971226eb 100644
--- a/configs/ocrnet/ocrnet_hr48_512x512_80k_ade20k.py
+++ b/configs/ocrnet/ocrnet_hr48_512x512_80k_ade20k.py
@@ -18,7 +18,7 @@
             num_convs=1,
             norm_cfg=norm_cfg,
             concat_input=False,
-            drop_out_ratio=-1,
+            dropout_ratio=-1,
             num_classes=150,
             align_corners=False,
             loss_decode=dict(
@@ -31,7 +31,7 @@
             input_transform='resize_concat',
             in_index=(0, 1, 2, 3),
             norm_cfg=norm_cfg,
-            drop_out_ratio=-1,
+            dropout_ratio=-1,
             num_classes=150,
             align_corners=False,
             loss_decode=dict(
diff --git a/docs/config.md b/docs/config.md
index e07fdfee84..aace67ff93 100644
--- a/docs/config.md
+++ b/docs/config.md
@@ -224,8 +224,8 @@ log_config = dict(  # config to register logger hook
 dist_params = dict(backend='nccl')  # Parameters to setup distributed training, the port can also be set.
 log_level = 'INFO'  # The level of logging.
 load_from = None  # load models as a pre-trained model from a given path. This will not resume training.
-resume_from = None  # Resume checkpoints from a given path, the training will be resumed from the epoch when the checkpoint's is saved.
-workflow = [('train', 1)]  # Workflow for runner. [('train', 1)] means there is only one workflow and the workflow named 'train' is executed once. The workflow trains the model by 12 epochs according to the total_epochs.
+resume_from = None  # Resume checkpoints from a given path, the training will be resumed from the iteration when the checkpoint's is saved.
+workflow = [('train', 1)]  # Workflow for runner. [('train', 1)] means there is only one workflow and the workflow named 'train' is executed once. The workflow trains the model by 40000 iterations according to the total_iters.
 cudnn_benchmark = True  # Whether use cudnn_benchmark to speed up, which is fast for fixed input size.
 optimizer = dict(  # Config used to build optimizer, support all the optimizers in PyTorch whose arguments are also the same as those in PyTorch
     type='SGD',  # Type of optimizers, refer to https://github.com/open-mmlab/mmcv/blob/master/mmcv/runner/optimizer/default_constructor.py#L13 for more details
diff --git a/docs/getting_started.md b/docs/getting_started.md
index c122ae1d9c..3a9b656032 100644
--- a/docs/getting_started.md
+++ b/docs/getting_started.md
@@ -125,23 +125,34 @@ Assume that you have already downloaded the checkpoints to the directory `checkp
         --eval mAP
     ```
 
-4. Test PSPNet with 8 GPUs, and evaluate the standard mIoU and cityscapes metric.
+4. Test PSPNet with 4 GPUs, and evaluate the standard mIoU and cityscapes metric.
 
     ```shell
     ./tools/dist_test.sh configs/pspnet/pspnet_r50-d8_512x1024_40k_cityscapes.py \
         checkpoints/pspnet_r50-d8_512x1024_40k_cityscapes_20200605_003338-2966598c.pth \
-        8 --out results.pkl --eval mIoU cityscapes
+        4 --out results.pkl --eval mIoU cityscapes
     ```
 
-5. Test PSPNet on cityscapes test split with 8 GPUs, and generate the png files to be submit to the official evaluation server.
+5. Test PSPNet on cityscapes test split with 4 GPUs, and generate the png files to be submit to the official evaluation server.
+
+    First, add following to config file `configs/pspnet/pspnet_r50-d8_512x1024_40k_cityscapes.py`,
+
+    ```python
+    data = dict(
+        test=dict(
+            img_dir='leftImg8bit/test',
+            ann_dir='gtFine/test'))
+    ```
+   Then run test.
 
     ```shell
     ./tools/dist_test.sh configs/pspnet/pspnet_r50-d8_512x1024_40k_cityscapes.py \
         checkpoints/pspnet_r50-d8_512x1024_40k_cityscapes_20200605_003338-2966598c.pth \
-        8 --format-only --options "imgfile_prefix=./pspnet_test_results"
+        4 --format-only --options "imgfile_prefix=./pspnet_test_results"
     ```
 
 You will get png files under `./pspnet_test_results` directory.
+You may run `zip -r results.zip pspnet_test_results/` and submit the zip file to [evaluation server](https://www.cityscapes-dataset.com/submit/).
 
 
 ### Image demo
@@ -205,8 +216,10 @@ By default we evaluate the model on the validation set after some iterations, yo
 evaluation = dict(interval=4000)  # This evaluate the model per 4000 iterations.
 ```
 
-**\*Important\***: The default learning rate in config files is for 8 GPUs and 1 img/gpu (batch size = 8x1 = 8).
-Equivalently, you may also use 4 GPUs and 2 imgs/gpu since all models using cross-GPU SyncBN.
+**\*Important\***: The default learning rate in config files is for 4 GPUs and 2 img/gpu (batch size = 4x2 = 8).
+Equivalently, you may also use 8 GPUs and 1 imgs/gpu since all models using cross-GPU SyncBN.
+
+To trade speed with GPU memory, you may pass in `--options model.backbone.with_cp=True` to enable checkpoint in backbone.
 
 ### Train with a single GPU
 
diff --git a/mmseg/datasets/cityscapes.py b/mmseg/datasets/cityscapes.py
index 9a12ab1724..30e3c2b24e 100644
--- a/mmseg/datasets/cityscapes.py
+++ b/mmseg/datasets/cityscapes.py
@@ -61,6 +61,7 @@ def results2img(self, results, imgfile_prefix, to_label_id):
             list[str: str]: result txt files which contains corresponding
             semantic segmentation images.
         """
+        mmcv.mkdir_or_exist(imgfile_prefix)
         result_files = []
         prog_bar = mmcv.ProgressBar(len(self))
         for idx in range(len(self)):
@@ -135,9 +136,9 @@ def evaluate(self,
                 the prefix of filename, e.g., "a/b/prefix".
                 If results are evaluated with cityscapes protocol, it would be
                 the prefix of output png files. The output files would be
-                png images under folder "a/b/prefix/xxx/", where "xxx" is the
-                video name of cityscapes. If not specified, a temp file will
-                be created.
+                png images under folder "a/b/prefix/xxx.png", where "xxx" is
+                the image name of cityscapes. If not specified, a temp file
+                will be created for evaluation.
                 Default: None.
 
         Returns:
diff --git a/mmseg/models/decode_heads/decode_head.py b/mmseg/models/decode_heads/decode_head.py
index d4c8748722..1c2636fd14 100644
--- a/mmseg/models/decode_heads/decode_head.py
+++ b/mmseg/models/decode_heads/decode_head.py
@@ -17,7 +17,7 @@ class BaseDecodeHead(nn.Module, metaclass=ABCMeta):
         in_channels (int|Sequence[int]): Input channels.
         channels (int): Channels after modules, before conv_seg.
         num_classes (int): Number of classes.
-        drop_out_ratio (float): Ratio of dropout layer. Default: 0.1.
+        dropout_ratio (float): Ratio of dropout layer. Default: 0.1.
         conv_cfg (dict|None): Config of conv layers. Default: None.
         norm_cfg (dict|None): Config of norm layers. Default: None.
         act_cfg (dict): Config of activation layers.
@@ -46,7 +46,7 @@ def __init__(self,
                  channels,
                  *,
                  num_classes,
-                 drop_out_ratio=0.1,
+                 dropout_ratio=0.1,
                  conv_cfg=None,
                  norm_cfg=None,
                  act_cfg=dict(type='ReLU'),
@@ -63,7 +63,7 @@ def __init__(self,
         self._init_inputs(in_channels, in_index, input_transform)
         self.channels = channels
         self.num_classes = num_classes
-        self.drop_out_ratio = drop_out_ratio
+        self.dropout_ratio = dropout_ratio
         self.conv_cfg = conv_cfg
         self.norm_cfg = norm_cfg
         self.act_cfg = act_cfg
@@ -77,8 +77,8 @@ def __init__(self,
             self.sampler = None
 
         self.conv_seg = nn.Conv2d(channels, num_classes, kernel_size=1)
-        if drop_out_ratio > 0:
-            self.dropout = nn.Dropout2d(drop_out_ratio)
+        if dropout_ratio > 0:
+            self.dropout = nn.Dropout2d(dropout_ratio)
         else:
             self.dropout = None
 
diff --git a/requirements/build.txt b/requirements/build.txt
index 2f74f3d17f..06ef892b41 100644
--- a/requirements/build.txt
+++ b/requirements/build.txt
@@ -1,3 +1,2 @@
 # These must be installed before building mmsegmentation
 numpy
-# torch
diff --git a/requirements/runtime.txt b/requirements/runtime.txt
index a03605f66a..db5d81e01e 100644
--- a/requirements/runtime.txt
+++ b/requirements/runtime.txt
@@ -1,4 +1,2 @@
 matplotlib
 numpy
-# torch
-# torchvision
diff --git a/tests/test_models/test_heads.py b/tests/test_models/test_heads.py
index 935239438f..3ac6bb0aa2 100644
--- a/tests/test_models/test_heads.py
+++ b/tests/test_models/test_heads.py
@@ -71,7 +71,7 @@ def test_decode_head():
     assert hasattr(head, 'dropout') and head.dropout.p == 0.1
 
     # test set dropout
-    head = BaseDecodeHead(32, 16, num_classes=19, drop_out_ratio=0.2)
+    head = BaseDecodeHead(32, 16, num_classes=19, dropout_ratio=0.2)
     assert hasattr(head, 'dropout') and head.dropout.p == 0.2
 
     # test no input_transform
diff --git a/tools/dist_test.sh b/tools/dist_test.sh
index 7381dfb1d7..34fb46541d 100755
--- a/tools/dist_test.sh
+++ b/tools/dist_test.sh
@@ -4,7 +4,6 @@ CONFIG=$1
 CHECKPOINT=$2
 GPUS=$3
 PORT=${PORT:-29500}
-$CONFIG\/$GPUS/
 PYTHONPATH="$(dirname $0)/..":$PYTHONPATH \
 python -m torch.distributed.launch --nproc_per_node=$GPUS --master_port=$PORT \
     $(dirname "$0")/test.py $CONFIG $CHECKPOINT --launcher pytorch ${@:4}
diff --git a/tools/get_flops.py b/tools/get_flops.py
index 86f1c5a9ef..aef3055499 100644
--- a/tools/get_flops.py
+++ b/tools/get_flops.py
@@ -31,6 +31,7 @@ def main():
         raise ValueError('invalid input shape')
 
     cfg = Config.fromfile(args.config)
+    cfg.model.pretrained = None
     model = build_segmentor(
         cfg.model, train_cfg=cfg.train_cfg, test_cfg=cfg.test_cfg).cuda()
     model.eval()