GCC 8 & LLVM Clang 6.0 Compiler Performance On AMD EPYC - November 2017

The Redis performance is strangely mega faster with LLVM Clang 6.0. These results are reproducible across multiple runs but do not yet have any explanation for the significant speed-up with Clang 6 and Redis.

GCC still leads with C-Ray multi-threading and is slightly faster with GCC 8 than GCC 7.2.

The same goes for LAME MP3 encoding.

That's about it for right now with these latest C/C++ compilers tested on AMD EPYC. More znver1 tests on other AMD Ryzen and Threadripper processors coming up soon, among other optimization tests and new benchmarks for Zen. All of these compiler results and details via this OpenBenchmarking.org result file.