Revert "Set USE_LIBXSMM default to OFF. (#5287)" (#5392)

This reverts commit a5e31391.

CMakeLists.txt

@@ -27,9 +27,7 @@ dgl_option(USE_NCCL "Build with NCCL support" OFF)
 dgl_option(USE_SYSTEM_NCCL "Build using system's NCCL library" OFF)
 dgl_option(USE_OPENMP "Build with OpenMP" ON)
 dgl_option(USE_AVX "Build with AVX optimization" OFF)
-# LIBXSMM requires Intel MKL installed. If it has not been installed, check the following page:
-# https://www.intel.com/content/www/us/en/developer/tools/oneapi/onemkl-download.html
-dgl_option(USE_LIBXSMM "Build with LIBXSMM library optimization" OFF)
+dgl_option(USE_LIBXSMM "Build with LIBXSMM library optimization" ON)
 dgl_option(USE_TVM "Build with TVM kernels" OFF)
 dgl_option(BUILD_CPP_TEST "Build cpp unittest executables" OFF)
 dgl_option(LIBCXX_ENABLE_PARALLEL_ALGORITHMS "Enable the parallel algorithms library. This requires the PSTL to be available." OFF)

benchmarks/scripts/build_dgl_asv.sh

@@ -9,7 +9,7 @@ pip install -r /asv/torch_gpu_pip.txt
 
 # build
 # 'CUDA_TOOLKIT_ROOT_DIR' is always required for sparse build as torch1.13.1+cu116 is installed.
-CMAKE_VARS="-DUSE_OPENMP=ON -DUSE_LIBXSMM=ON -DBUILD_TORCH=ON -DCUDA_TOOLKIT_ROOT_DIR=/usr/local/cuda"
+CMAKE_VARS="-DUSE_OPENMP=ON -DBUILD_TORCH=ON -DCUDA_TOOLKIT_ROOT_DIR=/usr/local/cuda"
 if [[ $DEVICE == "gpu" ]]; then
     CMAKE_VARS="-DUSE_CUDA=ON -DUSE_NCCL=ON $CMAKE_VARS"
 fi

tests/scripts/build_dgl.bat

@@ -13,7 +13,7 @@ SET TEMP=%WORKSPACE%\tmp
 SET TMPDIR=%WORKSPACE%\tmp
 
 PUSHD build
-cmake -DCMAKE_CXX_FLAGS="/DDGL_EXPORTS" -DUSE_AVX=ON -DUSE_OPENMP=ON -DUSE_LIBXSMM=ON -DBUILD_TORCH=ON -Dgtest_force_shared_crt=ON -DDMLC_FORCE_SHARED_CRT=ON -DBUILD_CPP_TEST=1 -DCMAKE_CONFIGURATION_TYPES="Release" -DTORCH_PYTHON_INTERPS=python -DBUILD_SPARSE=ON .. -G "Visual Studio 16 2019" || EXIT /B 1
+cmake -DCMAKE_CXX_FLAGS="/DDGL_EXPORTS" -DUSE_AVX=ON -DUSE_OPENMP=ON -DBUILD_TORCH=ON -Dgtest_force_shared_crt=ON -DDMLC_FORCE_SHARED_CRT=ON -DBUILD_CPP_TEST=1 -DCMAKE_CONFIGURATION_TYPES="Release" -DTORCH_PYTHON_INTERPS=python -DBUILD_SPARSE=ON .. -G "Visual Studio 16 2019" || EXIT /B 1
 msbuild dgl.sln /m /nr:false || EXIT /B 1
 COPY /Y Release\runUnitTests.exe .
 POPD

tests/scripts/build_dgl.sh

@@ -7,7 +7,7 @@ if [ $# -ne 1 ]; then
     exit -1
 fi
 
-CMAKE_VARS="-DBUILD_CPP_TEST=ON -DUSE_OPENMP=ON -DUSE_LIBXSMM=ON"
+CMAKE_VARS="-DBUILD_CPP_TEST=ON -DUSE_OPENMP=ON"
 # This is a semicolon-separated list of Python interpreters containing PyTorch.
 # The value here is for CI.  Replace it with your own or comment this whole
 # statement for default Python interpreter.