Created by: LeoZhao-Intel

System information -PaddlePaddle version: develop branch -CPU: CPUMKL ON/OFF -GPU: No -OS Platform: Linux -Python version: N/A -Cmake orders -C++version.txt -API information To Reproduce Run "ctest -R test_analyzer_small_dam -V" for more than 5000 tests

Describe your current behavior Random failure in seqpool_concat_fuse_pass processing in both builds with cmake option -DWITH_MKL=ON/OFF

Code to reproduce the issue

Other info / logs

116: Test command: /home/leozhao/Paddle/build/paddle/fluid/inference/tests/api/test_analyzer_small_dam "--inference_model_dir=/home/leozha
o/Paddle/build/third_party/inference_demo/word2vec/word2vec.inference.model" "--infer_model=/home/leozhao/Paddle/build/third_party/inferen
ce_demo/small_dam/model" "--infer_data=/home/leozhao/Paddle/build/third_party/inference_demo/small_dam/data.txt" "--max_turn_num=1"
116: Environment variables:
116:  FLAGS_cudnn_deterministic=true
116: Test timeout computed to be: 600
116: [==========] Running 8 tests from 1 test case.
116: [----------] Global test environment set-up.
116: [----------] 8 tests from Analyzer_dam
116: [ RUN      ] Analyzer_dam.profile
116: WARNING: Logging before InitGoogleLogging() is written to STDERR
116: I0331 21:58:43.398690 27293 analyzer_dam_tester.cc:178] The number of samples to be test: 1
116: I0331 21:58:43.398905 27293 tester_helper.h:65] AnalysisConfig {
116:   NativeConfig {
116:     PaddlePredictor::Config {
116:       model_dir:
116:     }
116:     use_gpu: 0
116:     device: 0
116:     fraction_of_gpu_memory: 0
116:     specify_input_name: 1
116:     cpu_num_threads: 1
116:   }
116:   prog_file: /home/leozhao/Paddle/build/third_party/inference_demo/small_dam/model/__model__
116:   param_file: /home/leozhao/Paddle/build/third_party/inference_demo/small_dam/model/param
116:   enable_ir_optim: 1
116:   enable_ir_optim: 1
116:   use_feed_fetch_ops: 1
116:   use_tensorrt: 0
116:   use_mkldnn: 0
116: }
116: ^[[1m^[[35m--- Running analysis [ir_graph_build_pass]^[[0m
116: ^[[1m^[[35m--- Running analysis [ir_analysis_pass]^[[0m
116: ^[[32m--- Running IR pass [infer_clean_graph_pass]^[[0m
116: ^[[32m--- Running IR pass [attention_lstm_fuse_pass]^[[0m
116: ^[[32m--- Running IR pass [seqpool_concat_fuse_pass]^[[0m
1/1 Test #116: test_analyzer_small_dam ..........***Exception: Other  1.25 sec

0% tests passed, 1 tests failed out of 1

Total Test time (real) =   1.28 sec