AMD Ryzen Threadripper Compiler Tuning/Optimization Benchmarks With GCC 9, PGO

Written by Michael Larabel in AMD on 16 May 2019 at 12:01 AM EDT. 3 Comments
For those interested in compiler optimization/tuning with AMD Ryzen Threadripper hardware, here are some follow-up benchmarks to Tuesday's GCC 9 vs. Clang 8 C/C++ Compiler Performance On AMD Threadripper, Intel Core i9.

The tests today are of GCC 9 at different tuning/optimization levels for reference purposes. Additionally there is a run when using Profile Guided Optimizations (PGO) for looking at the performance impact on GCC 9.
GCC 9.1 Compiler Tuning Threadripper AMD znver1

To cut to the chase here are the levels tested and jumping straight to the geometric mean of all the test results:
GCC 9.1 Compiler Tuning Threadripper AMD znver1

For all the individual metrics across dozens of benchmarks, jump to this result file.
GCC 9.1 Compiler Tuning Threadripper AMD znver1

As for the PGO impact, it's quite light. That's using the Phoronix Test Suite's PGO testing module. All those details for those interested in compiler tuning via this result file.
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Michael Larabel is the principal author of and founded the site in 2004 with a focus on enriching the Linux hardware experience. Michael has written more than 20,000 articles covering the state of Linux hardware support, Linux performance, graphics drivers, and other topics. Michael is also the lead developer of the Phoronix Test Suite, Phoromatic, and automated benchmarking software. He can be followed via Twitter, LinkedIn, or contacted via

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