The command order of CMakeLists.txt is wrong, which affects the performance.

[ZimingYuan]

From line 29 of CMakeLists.txt:

# Source codes
add_subdirectory(src)
add_subdirectory(tests)

# Compile flags
add_definitions(-std=c++11 -O3 -lboost -ltcmalloc_minimal -march=native -Wall -DINFO)

The correct order should be:

# Compile flags
add_definitions(-std=c++11 -O3 -lboost -ltcmalloc_minimal -march=native -Wall -DINFO)

# Source codes
add_subdirectory(src)
add_subdirectory(tests)

The original order deactivates the compile parameters in fact, which disables the O3 and AVX optimization.