allow profiler and timeline to work when dev_ctx is nullptr.

Drop the last batch, if the size of last batch is not equal to batch_size.

* Add python wrapper for gather op.

* Add unitest for 'rank==1' and fix comments.

* Fix comments.

* Add shape op to get the shape of variable.

* Rename get_shape to shape.

* Add checker for output and fix comments.

* add fluid benchmark Dockerfile

* add_fluid_benchmark_dockerfile

Refine ProgramDesc copy

* Make bilinear_interp_op support attrs from input.

* Fix python api.

add build and install document of fluid inference library

Balance parameter opt

Add author

* Build: add test_word2vec test_image_classification as dependencies of test_paddle_inference_api_impl.

* Fix build error when WITH_TESTING is OFF.

Fix dev image build on nodes of yq

Fix bug in "paddle/fluid/framework/tensor_impl.h" and inefficient code in "paddle/fluid/framework/reader.cc"

fix transpiler package

make infer test more stable.

* WIP move weight decay

* weight decay ok

* wip

* clean up transpiler

* add details folder

* update

* fix split var test

* follow comments