simple g++ vs clang++ benchmark with reaction-diffusion

Описание: This is a "benchmark" (rather: basic test) of pitting the two major compilers form the OpenSource-world against each other in a 2D reaction-diffusion simulation. It's g++ 7.2.0 vs clang++ 5.0.1.

The compile-flags used are:
-std=c++14 -Werror -Wall -pedantic -fno-omit-frame-pointer -Ofast -march=native

The CPU in the test-machine is a 4-thread (2-core) [email protected] GHz, which can boost upto 3.1 GHz.

The frame-rates achieved under screen-recording are:
361fps (g++) vs 398fps (clang++), thus clang-generated binary is 10% faster.

Without the screen-recording:
447fps (g++) vs 524fps (clang++), making the clang-generated binary being 17 % faster in this case. It's also a bit smaller.

If you want to play around with the code yourself, grab it with:
git clone https://github.com/MacSlow/reaction-d...