### To run this FAISS benchmark, please follow these steps:#### Step 1:Download the HDF5 source from: https://support.hdfgroup.org/ftp/HDF5/releases/and build/install to "/usr/local/hdf5".#### Step 2:Download HDF5 data files from: https://github.com/erikbern/ann-benchmarks#### Step 3:Update 'milvus/core/src/index/unittest/CMakeLists.txt',uncomment "#add_subdirectory(faiss_benchmark)".#### Step 4:Build Milvus with unittest enabled: "./build.sh -t Release -u",binary 'test_faiss_benchmark' will be generated.#### Step 5:Put HDF5 data files into the same directory with binary 'test_faiss_benchmark'.#### Step 6:Run test binary 'test_faiss_benchmark'.