MKL compile update to remove full mkl pack dependency for blas=mkl (a…

…pache#5036)

MKL_README.md

@@ -12,7 +12,7 @@ This README shows the user how to setup and install MKL2017 library with mxnet.
 
     1.1 By default, MKL_2017_EXPRIEMENTAL=0. If setting MKL_2017_EXPRIEMENTAL=1, MKL buffer will be created and transferred between layers to achiever much higher performance.
 
-    1.2 By default, USE_BLAS=atlas, MKLML_ROOT=/usr/local, MKL2017_ML will be used
+    1.2 By default, MKLML_ROOT=/usr/local, MKL2017_ML will be used
 
       1.2.1 when excute make, Makefile will execute "prepare_mkl.sh" to download the MKL2017_ML library under <MKLML_ROOT>
 
@@ -28,11 +28,11 @@ This README shows the user how to setup and install MKL2017 library with mxnet.
 
     1.3 If setting USE_BLAS=mkl
 
-      1.3.1 please navigate here to do a full MKL installation: https://registrationcenter.intel.com/en/forms/?productid=2558&licensetype=2  
+      1.3.1 mshadow can also utilize mkl blas function in mklml package  
 
-      1.3.2 do not use MKL2017 and MKL2017_ML at the same time
+    1.4 MKL version compatibility
 
-        1.3.2.1 Do not execute MKL2017 compilervars.sh or mklvars.sh script before MxNet compilation. Otherwise, MKL2017 may conflict with MKL2017_ML and MxNet may not be compiled.   
+        1.3.2.1 If you already have MKL installed and MKLROOT being set in your system, by default, it will not attempt to download the latest mklml package unless you unset MKLROOT. 
 
   2. Run 'make -jX'
 

Makefile

@@ -22,8 +22,16 @@ ifneq ($(USE_OPENMP), 1)
 	export NO_OPENMP = 1
 endif
 
+
 # use customized config file
 include $(config)
+
+ifeq ($(USE_MKL2017), 1)
+	RETURN_STRING=$(shell ./prepare_mkl.sh $(MKLML_ROOT))
+	MKLROOT=$(firstword $(RETURN_STRING))
+	export USE_MKLML=$(lastword $(RETURN_STRING))
+endif
+
 include mshadow/make/mshadow.mk
 include $(DMLC_CORE)/make/dmlc.mk
 
@@ -85,18 +93,6 @@ ifeq ($(USE_MKL2017_EXPERIMENTAL), 1)
 else
 	CFLAGS += -DMKL_EXPERIMENTAL=0
 endif
-ifneq ($(USE_BLAS), mkl)
-	ICC_ON=0
-	RETURN_STRING=$(shell ./prepare_mkl.sh $(ICC_ON) $(MKLML_ROOT))
-	MKLROOT=$(firstword $(RETURN_STRING))
-	MKL_LDFLAGS=-l$(word 2, $(RETURN_STRING))
-	MKL_EXTERNAL=$(lastword $(RETURN_STRING))
-ifeq ($(MKL_EXTERNAL), 1)
-	MKL_LDFLAGS+=-Wl,-rpath,$(MKLROOT)/lib
-	CFLAGS += -I$(MKLROOT)/include
-	LDFLAGS += -Wl,--as-needed -L$(MKLROOT)/lib/ -liomp5 -lmklml_intel
-endif
-endif
 endif
 
 ifeq ($(USE_CUDNN), 1)

make/config.mk

@@ -105,9 +105,11 @@ endif
 # to environment variable
 USE_INTEL_PATH = NONE
 
-# If use MKL, choose static link automatically to allow python wrapper
+# If use MKL only for BLAS, choose static link automatically to allow python wrapper
+ifeq ($(USE_MKL2017), 0)
 ifeq ($(USE_BLAS), mkl)
 USE_STATIC_MKL = 1
+endif
 else
 USE_STATIC_MKL = NONE
 endif

prepare_mkl.sh

@@ -36,19 +36,6 @@
 # OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 # OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 # 
-FindLibrary() 
-{
-  case "$1" in
-    intel|1)
-      LOCALMKL=`find $HOME_MKL -name libmklml_intel.so`   # name of MKL SDL lib
-      ;;
-    *)
-      LOCALMKL=`find $HOME_MKL -name libmklml_gnu.so`   # name of MKL SDL lib
-      ;;
-  esac
-
-}
-
 GetVersionName()
 {
 VERSION_LINE=0
@@ -62,12 +49,12 @@ echo $VERSION_LINE  # Return Version Line
 }
 
 # MKL
-HOME_MKL=$2
+HOME_MKL=$1
 if [ ! -d "$HOME_MKL" ]; then
    mkdir $HOME_MKL
 fi
 MXNET_ROOT=`dirname $0`
-OMP=0 
+USE_MKLML=0
 VERSION_MATCH=20170210
 ARCHIVE_BASENAME=mklml_lnx_2017.0.2.20170209.tgz
 MKL_CONTENT_DIR=`echo $ARCHIVE_BASENAME | rev | cut -d "." -f 2- | rev`
@@ -77,7 +64,7 @@ reg='^[0-9]+$'
 VERSION_LINE=`GetVersionName $MKLROOT`
 #echo $VERSION_LINE
 # Check if MKLROOT is set if positive then set one will be used..
-if [ -z $MKLROOT ] || [ $VERSION_LINE -lt $VERSION_MATCH ]; then
+if [ -z $MKLROOT ]; then
   # ..if MKLROOT is not set then check if we have MKL downloaded in proper version
     VERSION_LINE=`GetVersionName $HOME_MKL`
     #echo $VERSION_LINE
@@ -89,19 +76,16 @@ if [ -z $MKLROOT ] || [ $VERSION_LINE -lt $VERSION_MATCH ]; then
       yes | cp -rf $MXNET_ROOT/$MKL_CONTENT_DIR/* $HOME_MKL
       rm -rf $MXNET_ROOT/$MKL_CONTENT_DIR
     fi
-  FindLibrary $1
-  #echo $LOCALMKL
-  MKLROOT=`echo $LOCALMKL | sed -e 's/lib.*$//'`
+  MKLLIB=`find $HOME_MKL -name libmklml_gnu.so`
+  MKLROOT=`echo $MKLLIB | sed -e 's/lib.*$//'`
 fi
 
 # Check what MKL lib we have in MKLROOT
-if [ -z `find $MKLROOT -name libmkl_rt.so -print -quit` ]; then
-  LIBRARIES=`basename $LOCALMKL | sed -e 's/^.*lib//' | sed -e 's/\.so.*$//'`
-  OMP=1
-else
-  LIBRARIES="mkl_rt"
-fi 
-
+if [ -z `find $MKLROOT -name libmklml_gnu.so -print -quit` ]; then
+  USE_MKLML=0
+elif [ -z `find $MKLROOT -name libmkl_core.so -print -quit` ]; then
+  USE_MKLML=1
+fi
 
 # return value to calling script (Makefile,cmake)
-echo $MKLROOT $LIBRARIES $OMP
+echo $MKLROOT $USE_MKLML