fix east r50 hang

test_tipc/configs/det_r50_vd_east_v2_0/train_infer_python.txt

 ===========================train_params===========================
 model_name:det_r50_vd_east_v2_0
 python:python3.7
-gpu_list:0
+gpu_list:0|0,1
 Global.use_gpu:True|True
 Global.auto_cast:fp32
 Global.epoch_num:lite_train_lite_infer=1|whole_train_whole_infer=500
 Global.save_model_dir:./output/
 Train.loader.batch_size_per_card:lite_train_lite_infer=2|whole_train_whole_infer=4
-Global.pretrained_model:null
+Global.pretrained_model:./pretrain_models/det_r50_vd_east_v2.0_train/best_accuracy
 train_model_name:latest
 train_infer_img_dir:./train_data/icdar2015/text_localization/ch4_test_images/
 null:null

test_tipc/prepare.sh

@@ -120,6 +120,10 @@ if [ ${MODE} = "lite_train_lite_infer" ];then
         wget -nc -P ./pretrain_models/ https://paddleocr.bj.bcebos.com/dygraph_v2.0/en/det_mv3_east_v2.0_train.tar --no-check-certificate
         cd ./pretrain_models/ && tar xf det_mv3_east_v2.0_train.tar && cd ../
     fi
+    if [ ${model_name} == "det_r50_vd_east_v2_0" ]; then
+        wget -nc -P ./pretrain_models/ https://paddleocr.bj.bcebos.com/dygraph_v2.0/en/det_r50_vd_east_v2.0_train.tar --no-check-certificate
+        cd ./pretrain_models/ && tar xf det_r50_vd_east_v2.0_train.tar && cd ../
+    fi
 
 elif [ ${MODE} = "whole_train_whole_infer" ];then
     wget -nc -P  ./pretrain_models/ https://paddle-imagenet-models-name.bj.bcebos.com/dygraph/MobileNetV3_large_x0_5_pretrained.pdparams --no-check-certificate