* Add Travis testing on CentOS
* Disable building CPU Backend
* Remove Python dependencies from CentOS for now

* normalize comments

* address review comments

* [ONNX] MatMul operator

* Add NL on EOF

* Review fix pt. 1

* onnxifi: add 'onnx' as external project
Signed-off-by: Artur Wojcik <artur.wojcik@intel.com>

* onnxifi: public interface function stubs
Signed-off-by: Artur Wojcik <artur.wojcik@intel.com>

* onnxifi: fix the typo in function name
Signed-off-by: Artur Wojcik <artur.wojcik@intel.com>

* onnx: fix compilation Ubuntu 16.04
Signed-off-by: Artur Wojcik <artur.wojcik@intel.com>

* onnxifi: update to dummy backend
Signed-off-by: Artur Wojcik <artur.wojcik@intel.com>

* onnxifi: style cleanup
Signed-off-by: Artur Wojcik <artur.wojcik@intel.com>

* Bug fixes to account for padded layouts and correct handling for reshape that transposes and changes shape

* Use nullptr instead of dummy buffer in memory primitive creation

* add cuda reduce

* clang format

* fix bugs

* fix bug

* add 1d reduce

* clang format

* fix bugs

* unroll loop

* remove debug info

* revert tests

* unroll 1D reduce op

* add comments

* using cudnn for nd to scalar reduction

* remove cuda 1d reduction since cudnn version is faster

* remove 1D kernel

* fix variable name

* resolve Chris's comments

* non_reduce_in_strides to non_reduce_strides

* add detection of Linux distribution
Signed-off-by: Artur Wojcik <artur.wojcik@intel.com>

* onnx: disable ONNX unit-tests if CentOS detected (temporar solution)
Signed-off-by: Artur Wojcik <artur.wojcik@intel.com>

* onnx: correct DISTRIB_ID name for CentOS
Signed-off-by: Artur Wojcik <artur.wojcik@intel.com>

* Enable Mul OP

* Reshape, broadcasting utils and Gemm op

* Style check

* Review fix pt. 1

* Review fix pt. 2

* Reuse documentation

Signed-off-by: Artur Wojcik <artur.wojcik@intel.com>

* Move batch_norm implementation to a .cpp file
* Move split implementation to a .cpp file

* revert MKLDNN ver to 0.14

* reinstate dep

Signed-off-by: Artur Wojcik <artur.wojcik@intel.com>

* [ONNX] Refactor exceptions

* [ONNX] Attribute helper functions

* [ONNX] Convolution operation

* DEX AllReduce op

* fix conversion error

* fix clang build error

that doc build and all extensions work on 4k debian variants

* onnx: fix build for CentOS 7.4
Signed-off-by: Artur Wojcik <artur.wojcik@intel.com>

* onnx: fix build for CentOS 7.4
Signed-off-by: Artur Wojcik <artur.wojcik@intel.com>

* onnx: compile fix for CentOS 7
Signed-off-by: Artur Wojcik <artur.wojcik@intel.com>

* onnx: unit-test compilation fixes for CentOS 7
Signed-off-by: Artur Wojcik <artur.wojcik@intel.com>

* onnx: unit-test compilation fixes for CentOS 7
Signed-off-by: Artur Wojcik <artur.wojcik@intel.com>

* onnx: fix 'add abc initializer' unit test
Signed-off-by: Artur Wojcik <artur.wojcik@intel.com>

* onnx: fix code style
Signed-off-by: Artur Wojcik <artur.wojcik@intel.com>

* argmax

* manifests and serailizer

* get_default_order

* add a newline

* address scotts feedback

* add numeric header

* IntelGPU backend: Broadcast operation optimization

* PR1450 style check fixed

* add EXCLUDE_FROM_ALL to codegen library so we don't need to using conditionals in build. If codegen is needed it will be built.

* update llvm dependencies

This reverts commit 5ab5a129.

* static link cpu library to ngraph

* remove debug

* link ngraph and cpu backend into a single shared object

* add -fPIC and whole-archive for CPU backend

* Added conditional for --whole-archive for Mac OS.

* Added more conditonal for MacOS.

* fix linking problem and unit test failures caused by multiple copies of the same function in CPU backend and INTERPRETER

* fix nbench build

* add nbench to unit test build

* add version number to libngraph

* - update MKLDNN version from v0.14 -> v0.15

* - added support to query tensor size from mkldnn desc for MKLDNN Op's
- moved tensor size calculation to tensor_view_layout
- populate mkldnn layout desc witk MKLDNN queried size in the cpu_layout pass

* style fix

* - Fixed failing test cases

(cherry picked from commit d68d3738673c2081f458f9aa458c16361cc47657)

* style fix

* renamed tensor->logical_size() member function to tensor->size()

* Addressed PR comments

* - update mkldnn from v0.15 to v0.16
- update mkl SHA1 hash for lnx, max, win

* style fix

* Addressed Scott's PR comments

* merge branch master with pruthvi/mkldnn_v0.15

* argmin

* address feedbacka argmin

* add new lines

*  addnew lines

* address adam's nitpicks

* scott's feedback

* fix unit tests