* add the initial version of concat kernel

* when concat axis num is negative, converts it to positive

* indicates the Memcpy kind as cudaMemcpyDeviceToDevice

* fix assert_float_eq in blobcmp

* fix cuda_stream

* fix formats of ported codes

* Delete unused comments in ported codes

* refine formats

* refine

* basic model update

* spell mistake

* fix bug

* remove a log line

* add model_update_kernel_test

* fix some problem in model_update

* function problem

* judge isfinite and change function

* fix batch problem

* remove model update test

* model_update_kernel_test

* change a name

* add two function in kernel_util

* add a function in kernel_util

* remove functions in kernel_util

* add op in conf

* conflict

* RMSProp model update kernel

* remove conflict

* fix comment error

* add const

* conflict

* conflict

* add operator

* fix some problem in rmsprop model update kernel

* format change

* momentum model update kernel test and fix a bug

* add test for rmsprop model update kernel

* fix assert_float_eq in blobcmp

* fix cuda_stream

* basic model update

* spell mistake

* fix bug

* remove a log line

* add model_update_kernel_test

* fix some problem in model_update

* function problem

* judge isfinite and change function

* fix batch problem

* remove model update test

* model_update_kernel_test

* change a name

* add two function in kernel_util

* add a function in kernel_util

* remove functions in kernel_util

* add op in conf

* conflict

* RMSProp model update kernel

* remove conflict

* fix comment error

* add const

* conflict

* conflict

* add operator

* fix some problem in rmsprop model update kernel

* format change

* momentum model update kernel test and fix a bug

* initial draft

* add im2col_gpu

* modified kernel util

* fix some issues

* finished simple test for fw && bw with both gpu && cpu version

* Refined backward

* fix typos

* used cuda_util.h

* remove functions from kernel_util to convolution_kernel_util

* basic model update

* spell mistake

* fix bug

* remove a log line

* add model_update_kernel_test

* fix some problem in model_update

* function problem

* judge isfinite and change function

* fix batch problem

* remove model update test

* model_update_kernel_test

* change a name

* add two function in kernel_util

* add a function in kernel_util

* remove functions in kernel_util

* add op in conf

* conflict

* RMSProp model update kernel

* remove conflict

* fix comment error

* add const

* conflict

* conflict

* add operator

* fix some problem in rmsprop model update kernel

* softmax kernel test

* fix some bug in blase dot

* change implement of softmax sub

* fix bug in softmax kernel

* statitic_cast

* fix

* refine copy actors and model diff acc actor

* use set_num_of_not_eord

* fix element cnt

* basic model update

* spell mistake

* fix bug

* remove a log line

* add model_update_kernel_test

* fix some problem in model_update

* function problem

* judge isfinite and change function

* fix batch problem

* remove model update test

* model_update_kernel_test

* change a name

* momentum model update kernel

* add momentum op

* fix some bug

* fix a flag problem

* add commit for momentum

* comment error

* change op enroll

* add mtbn2lbn function

* format error

* type convertion

* remove const in template param

* softmax kernel and some functions for kernel util

* fix bug when using KernelUtil::BlasAxpy

* basic model update

* spell mistake

* fix bug

* remove a log line

* add model_update_kernel_test

* fix some problem in model_update

* function problem

* judge isfinite and change function

* fix batch problem

* remove model update test

* model_update_kernel_test

* change a name

* add gmock

* fix googletest cmake

* total_piece_num

* fw

* fix for review

* code style

* fix bug

* fix bug for data loader

* kStart in FW for data loader

* fix bug

* bp

* bp && fw

* unexpected_run

* boxing state

* fix bug

* ProcessEord & Boxing fixed

* ProcessEord in Actor and fix boxing

* remove useless override

* total_reading_cnt_

* use mut

* redefine fw

* redefine bp

* remove useless variable

* redefine model update

* refine copy actors and model diff acc actor

* use set_num_of_not_eord

* total_piece_num

* fw

* fix for review

* code style

* fix bug

* fix bug for data loader

* kStart in FW for data loader

* fix bug

* bp

* bp && fw

* unexpected_run

* boxing state

* fix bug

* ProcessEord & Boxing fixed

* ProcessEord in Actor and fix boxing

* remove useless override

* total_reading_cnt_

* use mut

* redefine fw

* redefine bp

* remove useless variable

* total_piece_num

* fw

* fix for review

* code style

* fix bug

* fix bug for data loader

* kStart in FW for data loader

* fix bug

* bp

* bp && fw

* unexpected_run

* boxing state

* fix bug

* ProcessEord & Boxing fixed

* ProcessEord in Actor and fix boxing

* remove useless override

* total_reading_cnt_

* use mut

* basic model update

* spell mistake

* fix bug

* remove a log line

* add model_update_kernel_test

* fix some problem in model_update

* function problem

* judge isfinite and change function

* fix batch problem

* remove model update test

* basic model update

* spell mistake

* fix bug

* remove a log line

* add model_update_kernel_test

* fix some problem in model_update

* function problem

* judge isfinite and change function

* fix batch problem

* add filler

* update filler

* fix issues

* rename filler

* add fill in kernel_util.cu

* update fill in gpu version

* update

* rm useless function declaration in kernel_util.h

* fix issues

* use unique_ptr to release memory of cudaMallocHost

* fix issues

* use kernel_util memcpy

* update Fill in kernel_util.cu

fix wrong design of softmax_op

add namespace {} in kernel_test oneflow::test::