test=develop

* Implement Int8 FC

* Integrate FC into INT8v2

test=develop

* int8 FC: transpose weights before computing scales

test=develop

* Add support for activation_type string in FC

test=develop

* Disable MKL-DNN's FC in VGG16 and 19

test=develop

* Disable FC quantization when mkldnn FC is disabled

test=develop

* Solve PADDLE_ENFORCES in FC int8

* Fix Paddle enforces and remove const cast

test=develop

* Fix style changes

test=develop

* Fix quantizer_tester test and add fc quantization

test=develop

* Fix FC test fail on CUDA

* Remove unnecessary log from quantize placement pass

test=develop

* Add Thread ID to FC hash key

test=develop

* Add comments to MKL-DNN FC Kernel

test=develop

* Refactor quantizer

test=develop

* Fix linter issues

test=develop

* Fix crash in slim googlenet

test=develop

* Fix PADDLE_ENFORCE messages

test=develop

* add axis check for concat op
test=develop

* fix PADDLE_ENFORCE format
test=develop

* move to ComputeAxis for InferShape check
test=develop

* make CUDA_ARCH_NAME default Auto

test=develop

* refine warning

test=develop

* fix some typos in AMP. test=develop

* delete useless codes. test=develop

* Fix ernie pythoin infer diff
* Refine mask

test=develop

* fix_bn

* revert unittest,test=develop

* add the framework support for distfc and ut, test=develop
* fix the implementation of shard_index_op, test=develop

* change download log formate; test=develop

* add unittest for data download; test=develop

* remove cache before download; test=develop

* Add fc padding to solve mkl performance
test=develop

* fix gpu pass and error information
test=develop

* fix fc_fuse_pass_test
test=develop

* fix error information
test=develop

* fix error information
test=develop

* fix name and add fc op padding test
test=develop

* fix attributes
test=develop

* optimize fc padding
test=develop

* fix test
test=develop

* Refactor MKL-DNN ElementwiseMul

remove manual fallback, remove format attrs
test=develop

* Refine PADDLE_ENFORCEs in eltwise_mul_op.h

test=develop

* Make ElementwiseMulOp inherit from ElementwiseOp

* Change type of simd_width to int

test=develop

* Remove Constructor extensions in ElementwiseOp and ElementwiseMulOp

test=develop

* Restore attributes

test=develop

* Fix test coverage for mkldnn eltwise mul

test=develop

* Conform to new is_run_common_broadcast API

test=develop

* Add UT for AreDimsAndFormatCorrect

test=develop

* fix logger problem
test=develop

* refine logger
test=develop

* fix the fill_constant op precious problem test=develop

* Improve argsort performance.

- Give 200000 data to compute argsort on v100,
can speed up ~190x
before opt cost: 0.53s
after opt cost:0.0027s

- Add fp16 support

* Refine error message
* Refine code

test=develop
Signed-off-by: Nzhaoyuchen <zhaoyuchen01@baidu.com>

* print table stat
test=develop

* notes
test=develop

* notes
test=develop

* add global value getter setter, test=develop

* fix error messages, test=develop

* use prefetch to load next mem into cache

test=develop

* remove hard code memcpy om pyramid_hash_ff

test=develop

* fix fetch handler problem and refactor
when a user define FetchHandler class, he or she should initialize a handler
with variable dict. the key of a variable dict is a user defined name,
the value of a variable dict is a Varaible generated from python API.

For each fetching, a user should implement handler function in which
fetched_result_dict will be available and the user can access the fetched value
with user defined keys.

* adapt test_collective_base.py for only two GPU cards available.
test=develop

* fix bug of issue #21259
test=develop

* Disable fusion_group pass for windows and mac. We will do some experiments on Linux first.
test=develop

* Print the subgraph when check failed.
test=develop

* Fix the crash issue when scale or bias was null-pointer.

test=develop

* Add the error message for passing CI.

test=develop

* add int8 kernel to lookup_table op and add dequantize op test=develop

* change paddle_enforce to paddle_enforce_eq test=develop

* change copyright and change some not suitable code test=develop

* remove debug log test=develop

* replace GetInputType with IndicateVarDataType test=develop

* fix EmptyGradMaker test=develop

* fix diff between cpu and gpu test=develop

* use memcopy when int8_t test=develop

Previously, CVM OP was only able to run in CPU. This PR implements its GPU kernel.
What's more, we improve the UTs about CVM OP.

* Avoid the string as the key of map to improve the jit performance.

test=develop

* Use map to replace unordered_map.

test=develop

* polish code details, test=develop

* futher polish hint msg, test=develop

pass the argument `allow_out_of_range` of one_hot op to c++ back end.