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Phoronix Test Suite

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AMD Bulldozer "bdver1" Compiler Performance

Michael Larabel

Published on 15 November 2011
Written by Michael Larabel
Page 3 of 3 - Add A Comment

GCC 4.6 and 4.7 had regressed with GraphicsMagick when setting the first-generation Bulldozer optimizations while the Open64 performance was not affected. However, when enabling the highest optimization level with bdver1, the regression was erased. In some cases, these maxed-out binaries were much faster.

The Bulldozer optimizations also caused the GCC-built binaries to regress for the Gcrypt benchmark while under Open64 they were running at the same speed. Setting "-Ofast" for Gcrypt caused broken binaries.

Next up are benchmarks from Open64 5.0 on Bulldozer.

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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