bartekkuncer commented on a change in pull request #20004:
URL: https://github.com/apache/incubator-mxnet/pull/20004#discussion_r592227448



##########
File path: cmake/ChooseBlas.cmake
##########
@@ -23,14 +23,6 @@ set(INTEL_OPT_ROOT "/opt/intel" CACHE PATH "Folder contains 
root-installed intel
 
 if(DEFINED USE_BLAS)
   set(BLAS "${USE_BLAS}")
-else()
-  if (USE_MKL_IF_AVAILABLE)
-    # Setting up BLAS_mkl_MKLROOT for non-Ubuntu 20.04 OSes
-    find_path(BLAS_mkl_MKLROOT mkl PATHS $ENV{MKLROOT} ${INTEL_HOME_ROOT} 
${INTEL_OPT_ROOT})
-    if(NOT BLAS_mkl_MKLROOT STREQUAL "BLAS_mkl_MKLROOT-NOTFOUND")
-      set(BLAS "MKL")
-    endif()
-  endif()

Review comment:
       Well now if the user wants to use mkl he has to explicitly declare 
USE_BLAS=mkl. Otherwise with no BLAS set, OpenBLAS will be used. Do we want to 
keep this functionality now as default in mxnet?




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