* update eigen, test=develop

* remove patches, test=develop

* add definition of -fabi-version, test=develop

* add patch for TensorBlock.h, test=develop

* test windows, test=develop

* only update eigen for Linux, test=develop

* add code comments, test=develop

* Remove the NGraph engine from PDPD repository
1. Each operator was removed from the operator's directory
2. Each test was removed from the unittest directory
3. The parallel executor support was removed from the PDPD
4. The CMake file was removed from the PDPD
5. The NG flags were removed from the repository
test=develop

* Remove ngraph from:
1. Cmake file
2. Python file
test=develop

* change the cmake and apis of lite engine, test=develop

* change the cmake of lite engine, test=develop

* get pslib version
* test=develop

* change the function in op_teller, test=develop

* correct the commit-id, test=develop

fix bug that sourcecode of third_party can't be cached correctly,and add cache for xbyak and openblas (#22772)

* Add two types of Metric Calculator: MultiTaskCalculator & CmatchRankCalculator.
* Add a config for DynamicAdjustChannelNum function to denote whether we will discard the remaining instances when they are not be distributed evenly.
* Remove CPU code in Pull/PushSparse and we will add it back when testing it fully.
* Fix some known issues: such as copying persistable vars after one epoch running.

* modify lite commit id to support var_conv_2d cascade. test=develop

* modify lite commit id. test=develop

* update external lite, test=develop

* switch WITH_TESTING to OFF, test=develop

修改了依赖lite的commit id：lite支持了var_conv_2d的级联使用

* fix compile issue, test=develop

* force link libiomp5 when mklml is enabled, test=develop

faster build by reduce by-product, reduce linking library and fix compile warning of std=c++11 (#22164)

* add collective communication library in fleet to replace mpi
* test=develop

- 添加了fluid-lite子图方式运行resnet的单测
- 修改了依赖Lite的git commit id

tweak the interface of cache_third_party function - expose the SOURCE_DIR for each external library (#21899)

* Fix openblas to support compile on Windows when WITH_MKL=OFF

* MKLDNN v1.0 rebase to Paddle 1.6
test=develop

* Add hacky paddle::string::to_string() implementation

* vectorize<int64-t>() -> vectorize() cleanup
test=develop

* PADDLE_ENFORCE and void_cast fixes
test=develop

* Rebase changes
test=develop

* Cosmetics
test=develop

* Delete MKL from mkldnn.cmake
test=develop

* CMake debug commands
test=develop

* Delete MKLDNN_VERBOSE and rebase fixes
test=develop

* Rebase fixes
test=develop

* Temporarily disable int8 resnet101 vgg16 and vgg19 tests
test=develop

* Add libmkldnn.so.1 to python setup
test=develop

* Add libmkldnn.so.1 to inference_lib cmake after rebase
test=develop

* Post rebase fixes + FC int8 changes
test=develop

* Fix LRN NHWC
test=develop

* Fix NHWC conv3d
test=develop

* Windows build fix + next conv3d fix
test=develop

* Fix conv2d on AVX2 machines
test=develop

* modify the repo address of eigen and warpctc

* fix the eigen not work on windows

* fix the eigen and warpctc can't recompile

test=develop

* make Docker to gcc 8.2, test=develop

* add -std=c11 to grpc.cmake, test=develop