Improve `partition_load_balance` #97

Job	Run time
CMake Matrix Test. (Linux Min GCC, ubuntu-20.04, gcc-9, g++-9, 3.7, 3.19.x, ON, OFF, static)	18m 11s
CMake Matrix Test. (Linux Min GCC, ubuntu-20.04, gcc-9, g++-9, 3.7, 3.19.x, ON, OFF, shared)	15m 56s
CMake Matrix Test. (Linux Min Clang, ubuntu-20.04, clang-9, clang++-9, 3.7, 3.19.x, ON, OFF, static)	10m 54s
CMake Matrix Test. (Linux Min Clang, ubuntu-20.04, clang-9, clang++-9, 3.7, 3.19.x, ON, OFF, shared)	7m 37s
CMake Matrix Test. (MacOS Min, macos-11, clang, clang++, 3.7, 3.19.x, ON, OFF, static)	24m 48s
CMake Matrix Test. (MacOS Min, macos-11, clang, clang++, 3.7, 3.19.x, ON, OFF, shared)	17m 52s
CMake Matrix Test. (Linux Max GCC, ubuntu-22.04, gcc-12, g++-12, 3.11, 3.22.x, ON, OFF, static)	18m 5s
CMake Matrix Test. (Linux Max GCC, ubuntu-22.04, gcc-12, g++-12, 3.11, 3.22.x, ON, OFF, shared)	14m 40s
CMake Matrix Test. (Linux SIMD, ubuntu-22.04, gcc-12, g++-12, 3.11, 3.22.x, OFF, ON, static)	30m 25s
CMake Matrix Test. (Linux SIMD, ubuntu-22.04, gcc-12, g++-12, 3.11, 3.22.x, OFF, ON, shared)	13m 22s
CMake Matrix Test. (Linux Max Clang, ubuntu-22.04, clang-14, clang++-14, 3.11, 3.22.x, ON, OFF, s...	28m 27s
CMake Matrix Test. (Linux Max Clang, ubuntu-22.04, clang-14, clang++-14, 3.11, 3.22.x, ON, OFF, s...	22m 12s
CMake Matrix Test. (MacOS Max, macos-13, clang, clang++, 3.11, 3.22.x, ON, OFF, static)	19m 19s
CMake Matrix Test. (MacOS Max, macos-13, clang, clang++, 3.11, 3.22.x, ON, OFF, shared)	14m 49s
	4h 16m 37s

Provide feedback