In this repository you can run benchmark for following uint128 implementations:
- GCC builtin unsigned __int128
- chfast intx::uint128
- abseil absl::uint128
- boost::multiprecision::uint128
Google Benchmark should be installed according to https://github.com/google/benchmark#installation Boost includes installed
git clone https://github.com/mikelik/int128-benchmark.git
cd int128-benchmark
git submodule update --init --recursive
mkdir build
cd build
cmake ..
make
taskset -c 0 ./int128-benchmark
To reduce variation follow steps from https://github.com/google/benchmark/blob/main/docs/reducing_variance.md#reducing-variance-in-benchmarks
$ taskset -c 0 ./int128-benchmark
2023-06-14T14:32:24+02:00
Running ./int128-benchmark
Run on (20 X 3431.84 MHz CPU s)
CPU Caches:
L1 Data 48 KiB (x10)
L1 Instruction 32 KiB (x10)
L2 Unified 1280 KiB (x10)
L3 Unified 24576 KiB (x1)
Load Average: 1.08, 0.83, 0.68
-----------------------------------------------------------------------
Benchmark Time CPU Iterations
-----------------------------------------------------------------------
abseil_create_uint128 0.655 ns 0.655 ns 1000000000
abseil_add_uint128 6.91 ns 6.91 ns 102300654
abseil_multiply_uint128 7.17 ns 7.17 ns 98244952
abseil_add_multiply_uint128 11.7 ns 11.7 ns 60102632
builtin_create_uint128 0.657 ns 0.657 ns 1000000000
builtin_add_uint128 1.75 ns 1.75 ns 400711845
builtin_multiply_uint128 1.97 ns 1.97 ns 355840282
builtin_add_multiply_uint128 1.67 ns 1.67 ns 422742424
intx_create_uint128 0.661 ns 0.661 ns 1000000000
intx_add_uint128 16.6 ns 16.6 ns 42058001
intx_multiply_uint128 15.1 ns 15.1 ns 46044943
intx_add_multiply_uint128 27.8 ns 27.8 ns 25115148
boost_create_uint128 0.656 ns 0.656 ns 1000000000
boost_add_uint128 13.4 ns 13.4 ns 52874018
boost_multiply_uint128 13.2 ns 13.2 ns 52872268
boost_add_multiply_uint128 29.5 ns 29.5 ns 23178985
$ taskset -c 0 ./int128-benchmark
2023-06-14T14:32:42+02:00
Running ./int128-benchmark
Run on (20 X 688.621 MHz CPU s)
CPU Caches:
L1 Data 48 KiB (x10)
L1 Instruction 32 KiB (x10)
L2 Unified 1280 KiB (x10)
L3 Unified 24576 KiB (x1)
Load Average: 1.05, 0.84, 0.69
-----------------------------------------------------------------------
Benchmark Time CPU Iterations
-----------------------------------------------------------------------
abseil_create_uint128 0.656 ns 0.656 ns 1000000000
abseil_add_uint128 7.05 ns 7.05 ns 101091393
abseil_multiply_uint128 7.37 ns 7.37 ns 94419389
abseil_add_multiply_uint128 11.9 ns 11.9 ns 58683362
builtin_create_uint128 0.656 ns 0.656 ns 1000000000
builtin_add_uint128 1.75 ns 1.75 ns 400529383
builtin_multiply_uint128 1.96 ns 1.96 ns 354129418
builtin_add_multiply_uint128 1.66 ns 1.66 ns 419210581
intx_create_uint128 0.659 ns 0.659 ns 1000000000
intx_add_uint128 17.0 ns 17.0 ns 41242503
intx_multiply_uint128 15.4 ns 15.4 ns 45459449
intx_add_multiply_uint128 27.9 ns 27.9 ns 25054660
boost_create_uint128 0.655 ns 0.655 ns 1000000000
boost_add_uint128 13.1 ns 13.1 ns 52835982
boost_multiply_uint128 13.1 ns 13.1 ns 52708928
boost_add_multiply_uint128 29.8 ns 29.8 ns 23038686
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