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AMD's FX-8150 Bulldozer Benefits From New Compilers, Tuning

Michael Larabel

Published on 18 April 2012
Written by Michael Larabel
Page 3 of 7 - 40 Comments

The image sharpening operation within GraphicsMagick improved by 60% with GCC 4.7.0 when it was built with the -march=bdver1 compiler flag over -march=k8. The Open64 bdver1 optimization resulted in a 25% improvement.

When running Himeno, LLVM/Clang with just the "-march=k8" flag did the best but regressed sharply when using the bdver1-level optimizations. Meanwhile, GCC 4.7.0 improved by 12% with bdver1 support and Open64 was up by 5% with this compiler tuning.

When running HMMer, Open64 4.5.1 produced the fastest binaries ahead of both GCC 4.7.0 and LLVM/Clang 3.1 SVN. The bdver1 support provided minimal benefit in this test.

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