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Open64 Compiler Tuning On AMD Bulldozer FX-8150

Michael Larabel

Published on 2 November 2011
Written by Michael Larabel
Page 8 of 8 - 15 Comments

There was not much difference in the Gcrypt CAMELLIA256-ECB Cipher performance aside from when playing with the loose optimizations levels of -O0 and -O1.

The results from this first round of compiler tuning benchmarks are not terribly surprising. The more aggressive optimizations, well, generally deliver better performance. Worth noting though is that the "bdver1" optimizations were not too beneficial when used alone with these tests / code (the Bulldozer-specific optimizations will be tested in another article in the near future with the bdver1 support in GCC too). Testing some of the other individual Bulldozer/Interlagos optimizations recommended by AMD tended to not be too beneficial for the performance with the select tests used in this article.

About The Author
Michael Larabel is the principal author of Phoronix.com and founded the web-site in 2004 with a focus on enriching the Linux hardware experience and being the largest web-site devoted to Linux hardware reviews, particularly for products relevant to Linux gamers and enthusiasts but also commonly reviewing servers/workstations and embedded Linux devices. Michael has written more than 10,000 articles covering the state of Linux hardware support, Linux performance, graphics hardware drivers, and other topics. Michael is also the lead developer of the Phoronix Test Suite, Phoromatic, and OpenBenchmarking.org automated testing software. He can be followed via and or contacted via .
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