* fixed one error,https://github.com/PaddlePaddle/FluidDoc/issues/890

* http://newicafe.baidu.com/issue/DLTP-1993/show of release/1.4

* add nccl

* refine doc

* revert dygraph

* revert dygraph

* TRT预测库仅支持GPU编译

DLTP-739 完善tensorRT使用文档 TRT需要GPU编译

* DLTP-965 预测模型的保存和加载文档优化

* Windows_installation_English

* DLTP-1417 受训改为训练

* modify write_docs (how to contribute documentation) (#899)

* modify write_docs_cn, write_docs_en, include specifications about python 2.7.15 and creating  virtual env with conda

* gitignore update

* revert .gitignore;  update write_docs

* icafe DLTP-1328, stress  exe.close()

* DLTP-1383 不可迭代更正

* DLTP-1404 修复动态图文档中每段代码的格式和大小都不一样

* DLTP-1390 Pyreader中文显示格式问题

* DLTP-1393 无效链接

* DLTP-1421 paddle.fluid.layers.reduce_max中文翻译有问题

* DyGraph 调整标签结构

* new flags documents

* flags

* flags

* flags

* modify for PR=17924

* modify for pr=17924

* modify for pr=17924

* new flags documents

* flags

* flags

* flags

* update_inference_lib_1.4.1

* update_en

* Delete book_cnls

* Update install_cn.md

* Rename inferense_cn.md to inference_cn.md

* Update index_cn.rst

* update_faq (#849)

* Update FAQ  (#855)

* update_faq

* revise the style

* modify the FAQ format

* fix_table_link (#837)

* fix_table_link

* fix en

* Update commitid paddle 0428 (#838)

* update_commitid_Paddle_0428

* run gen_doc

* Update metrics_en.rst (#822)

* Update lod_tensor_en.rst (#820)

* update 1.4 releasenote (#839)

* update_releasenote_0428

* add new

* routine_update_190506 (#845)

* fix lod_tensor typo

* update new_op.cm

* update op note

* dygraph doc

* refine doc

* refine doc

* refine doc

* refine language

* refine code

* hotfix deadlink (#811)

* Update native_infer_en.md (#787)

* Update install_Windows_en.md (#790)

* Update install_Windows_en.md

* Update install_Windows_en.md

* Update cluster_howto_en.rst (#791)

* Update cluster_howto_en.rst

* Update cluster_howto_en.rst

* Update doc/fluid/user_guides/howto/training/cluster_howto_en.rst
Co-Authored-By: Nacosta123 <42226556+acosta123@users.noreply.github.com>

* Update doc/fluid/user_guides/howto/training/cluster_howto_en.rst
Co-Authored-By: Nacosta123 <42226556+acosta123@users.noreply.github.com>

* Update cluster_howto_en.rst

* Update index_cn.rst (#813)

* rm_win_install_table (#815)

* Update paddle_tensorrt_infer_en.md (#788)

* Update paddle_tensorrt_infer_en.md

* Update paddle_tensorrt_infer_en.md

* Update doc/fluid/advanced_usage/deploy/inference/paddle_tensorrt_infer_en.md
Co-Authored-By: Nacosta123 <42226556+acosta123@users.noreply.github.com>

* Update paddle_tensorrt_infer_en.md

* Update paddle_tensorrt_infer_en.md

* Update use_py_reader_en.rst (#793)

* Update use_py_reader_en.rst

* Update use_py_reader_en.rst

* Update use_py_reader_en.rst

* Update doc/fluid/user_guides/howto/prepare_data/use_py_reader_en.rst
Co-Authored-By: Nacosta123 <42226556+acosta123@users.noreply.github.com>

* Update use_py_reader_en.rst

* Update learning_rate_scheduler_en.rst (#804)

* Update learning_rate_scheduler_en.rst

* Update doc/fluid/api_guides/low_level/layers/learning_rate_scheduler_en.rst
Co-Authored-By: Nacosta123 <42226556+acosta123@users.noreply.github.com>

* Update doc/fluid/api_guides/low_level/layers/learning_rate_scheduler_en.rst
Co-Authored-By: Nacosta123 <42226556+acosta123@users.noreply.github.com>

* Update cluster_howto_en.rst (#807)

* fix dygraph load_persistables bug (#817)

* update_install_check command (#818)

* update op role

* update op role

* modified yolov3_loss annotation (#824)

* update_models_link (#825)

* follow comments

* follow comments

* update_install_doc_0422 (#827)

* follow comments

* update_releasenote_1.4 (#828)

* fix typo (#830)

* fix typo

* Update native_infer.md

* hotfix deadlink (#811)

* Update native_infer_en.md (#787)

* Update install_Windows_en.md (#790)

* Update install_Windows_en.md

* Update install_Windows_en.md

* Update cluster_howto_en.rst (#791)

* Update cluster_howto_en.rst

* Update cluster_howto_en.rst

* Update doc/fluid/user_guides/howto/training/cluster_howto_en.rst
Co-Authored-By: Nacosta123 <42226556+acosta123@users.noreply.github.com>

* Update doc/fluid/user_guides/howto/training/cluster_howto_en.rst
Co-Authored-By: Nacosta123 <42226556+acosta123@users.noreply.github.com>

* Update cluster_howto_en.rst

* Update index_cn.rst (#813)

* Update native_infer_en.md

* Update native_infer_en.md

* save load implement optimize

* fix.

* dygraph doc

* refine doc

* refine doc

* refine doc

* refine language

* refine code

* fix create_lod_tensor

* fix create_lod_tensor English version

* Update feeding_data_en.rst

* add init Program

* init program English version

* recheck_structure&fix_typo

* fix_structure

* adjust_dist_structure

* fix_deadlink

* fix deadlink

* remove wrong complie option

* refine doc

* api modification

half modification of fluid/io/layers

* Apply suggestions from code review
Co-Authored-By: Nzy0531 <48094155+zy0531@users.noreply.github.com>

* Update fluid_cn.rst

* fix wrong apis in #767

* Textual proofreading

* 1.3 => develop (4.12)

* Delete InMemoryDataSet and QueueDataSet 

refer to #784

* add pixel shuffle and in_dygraph_mode