GCC AMD Bulldozer Compiler Optimization Levels

AMD FX-8150 Eight-Core Bulldozer processor testing various optimization levels of GCC compiler on Ubuntu Linux.

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C/C++ Compiler Tests 5 Tests
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-O0
September 15 2012
 
-O1
September 15 2012
 
-O2
September 15 2012
 
-O3
September 15 2012
 
-Os
September 15 2012
 
-Ofast
September 15 2012
 
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-O0

Compiler Notes: --build=x86_64-linux-gnu --disable-werror --enable-checking=release --enable-clocale=gnu --enable-gnu-unique-object --enable-languages=c,c++,go,fortran,objc,obj-c++ --enable-libstdcxx-debug --enable-libstdcxx-time=yes --enable-nls --enable-objc-gc --enable-plugin --enable-shared --enable-threads=posix --host=x86_64-linux-gnu --target=x86_64-linux-gnu --with-arch-32=i686 --with-tune=generic -v
Processor Notes: Scaling Governor: ondemand
System Notes: Compiz was running on this system.

-O1

-O2

-O3

-Os

-Ofast

Processor: AMD FX-8150 Eight-Core @ 3.60GHz (8 Cores), Motherboard: ASUS Crosshair V Formula, Chipset: AMD ATI RD890 bridge, Memory: 4096MB, Disk: 60GB OCZ VERTEX2, Graphics: NVIDIA GeForce 9600 GSO 512MB (399/399MHz), Audio: Realtek ALC889, Monitor: DELL P2210H, Network: Intel 82583V Gigabit Connection

OS: Ubuntu 12.10, Kernel: 3.5.0-14-generic (x86_64), Desktop: Unity 6.4.0, Display Server: X Server 1.13.0, Display Driver: nouveau 1.0.2, OpenGL: 3.0 Mesa 8.1-devel Gallium 0.4, Compiler: GCC 4.7, File-System: ext4, Screen Resolution: 1920x1080

GCC AMD Bulldozer Compiler Optimization LevelsOpenBenchmarking.orgPhoronix Test SuiteAMD FX-8150 Eight-Core @ 3.60GHz (8 Cores)ASUS Crosshair V FormulaAMD ATI RD890 bridge4096MB60GB OCZ VERTEX2NVIDIA GeForce 9600 GSO 512MB (399/399MHz)Realtek ALC889DELL P2210HIntel 82583V Gigabit ConnectionUbuntu 12.103.5.0-14-generic (x86_64)Unity 6.4.0X Server 1.13.0nouveau 1.0.23.0 Mesa 8.1-devel Gallium 0.4GCC 4.7ext41920x1080ProcessorMotherboardChipsetMemoryDiskGraphicsAudioMonitorNetworkOSKernelDesktopDisplay ServerDisplay DriverOpenGLCompilerFile-SystemScreen ResolutionGCC AMD Bulldozer Compiler Optimization Levels PerformanceSystem Logs- --build=x86_64-linux-gnu --disable-werror --enable-checking=release --enable-clocale=gnu --enable-gnu-unique-object --enable-languages=c,c++,go,fortran,objc,obj-c++ --enable-libstdcxx-debug --enable-libstdcxx-time=yes --enable-nls --enable-objc-gc --enable-plugin --enable-shared --enable-threads=posix --host=x86_64-linux-gnu --target=x86_64-linux-gnu --with-arch-32=i686 --with-tune=generic -v - Scaling Governor: ondemand- Compiz was running on this system.

-O0-O1-O2-O3-Os-OfastLogarithmic Result OverviewPhoronix Test SuiteOpen FMM Nero2DSmallptHimeno BenchmarkGraphicsMagickTimed PHP CompilationGraphicsMagickC-RayGraphicsMagickGraphicsMagickGraphicsMagickTotal TimeG.I.R.1.SP.P.SSharpenTime To CompileL.A.TTotal TimeHWB Color SpaceResizingBlur

GCC AMD Bulldozer Compiler Optimization Levelsgraphics-magick: Blurgraphics-magick: Sharpengraphics-magick: Resizinggraphics-magick: HWB Color Spacegraphics-magick: Local Adaptive Thresholdinghimeno: Poisson Pressure Solverbuild-php: Time To Compilec-ray: Total Timesmallpt: Global Illumination Renderer; 100 Samplesnero2d: Total Timepgbench: TPC-B Transactions Per Second-O0-O1-O2-O3-Os-Ofast6441678131240.4314.2276.231164513.591596.13976412815767410.0822.1053.7836612.651920.03976512415867588.7029.8546.5736529.952004.751126412115667675.9232.7136.3832521.831989.01826810112262540.1024.8372.89511065.631831.301099512215867704.7632.9135.8430509.70OpenBenchmarking.org

GraphicsMagick

OpenBenchmarking.orgIterations Per Minute, More Is BetterGraphicsMagick 1.3.12Operation: Blur-Ofast-Os-O3-O2-O1-O0306090120150SE +/- 0.00, N = 3SE +/- 0.58, N = 3SE +/- 1.45, N = 3SE +/- 0.67, N = 3SE +/- 0.58, N = 3SE +/- 0.00, N = 310982112979764-Ofast-Os-O3-O2-O1-O01. (CC) gcc options: -std=gnu99 -fopenmp -pthread -lz -lm -lgomp -lpthread
OpenBenchmarking.orgIterations Per Minute, More Is BetterGraphicsMagick 1.3.12Operation: Blur-Ofast-Os-O3-O2-O1-O020406080100Min: 109 / Avg: 109 / Max: 109Min: 81 / Avg: 82 / Max: 83Min: 109 / Avg: 111.67 / Max: 114Min: 96 / Avg: 96.67 / Max: 98Min: 96 / Avg: 97 / Max: 98Min: 64 / Avg: 64 / Max: 641. (CC) gcc options: -std=gnu99 -fopenmp -pthread -lz -lm -lgomp -lpthread

OpenBenchmarking.orgIterations Per Minute, More Is BetterGraphicsMagick 1.3.12Operation: Sharpen-Ofast-Os-O3-O2-O1-O020406080100SE +/- 0.33, N = 3SE +/- 0.33, N = 3SE +/- 0.00, N = 3SE +/- 0.33, N = 3SE +/- 0.33, N = 3SE +/- 0.00, N = 3956864656441-Ofast-Os-O3-O2-O1-O01. (CC) gcc options: -std=gnu99 -fopenmp -pthread -lz -lm -lgomp -lpthread
OpenBenchmarking.orgIterations Per Minute, More Is BetterGraphicsMagick 1.3.12Operation: Sharpen-Ofast-Os-O3-O2-O1-O020406080100Min: 94 / Avg: 94.67 / Max: 95Min: 67 / Avg: 67.67 / Max: 68Min: 64 / Avg: 64 / Max: 64Min: 64 / Avg: 64.67 / Max: 65Min: 64 / Avg: 64.33 / Max: 65Min: 41 / Avg: 41 / Max: 411. (CC) gcc options: -std=gnu99 -fopenmp -pthread -lz -lm -lgomp -lpthread

OpenBenchmarking.orgIterations Per Minute, More Is BetterGraphicsMagick 1.3.12Operation: Resizing-Ofast-Os-O3-O2-O1-O0306090120150SE +/- 0.33, N = 3SE +/- 0.33, N = 3SE +/- 0.33, N = 3SE +/- 0.00, N = 3SE +/- 0.00, N = 3SE +/- 0.33, N = 312210112112412867-Ofast-Os-O3-O2-O1-O01. (CC) gcc options: -std=gnu99 -fopenmp -pthread -lz -lm -lgomp -lpthread
OpenBenchmarking.orgIterations Per Minute, More Is BetterGraphicsMagick 1.3.12Operation: Resizing-Ofast-Os-O3-O2-O1-O020406080100Min: 121 / Avg: 121.67 / Max: 122Min: 100 / Avg: 100.67 / Max: 101Min: 121 / Avg: 121.33 / Max: 122Min: 124 / Avg: 124 / Max: 124Min: 128 / Avg: 128 / Max: 128Min: 66 / Avg: 66.67 / Max: 671. (CC) gcc options: -std=gnu99 -fopenmp -pthread -lz -lm -lgomp -lpthread

OpenBenchmarking.orgIterations Per Minute, More Is BetterGraphicsMagick 1.3.12Operation: HWB Color Space-Ofast-Os-O3-O2-O1-O0306090120150SE +/- 0.33, N = 3SE +/- 0.67, N = 3SE +/- 0.33, N = 3SE +/- 0.67, N = 3SE +/- 0.67, N = 3SE +/- 0.33, N = 315812215615815781-Ofast-Os-O3-O2-O1-O01. (CC) gcc options: -std=gnu99 -fopenmp -pthread -lz -lm -lgomp -lpthread
OpenBenchmarking.orgIterations Per Minute, More Is BetterGraphicsMagick 1.3.12Operation: HWB Color Space-Ofast-Os-O3-O2-O1-O0306090120150Min: 158 / Avg: 158.33 / Max: 159Min: 121 / Avg: 121.67 / Max: 123Min: 155 / Avg: 155.67 / Max: 156Min: 157 / Avg: 158.33 / Max: 159Min: 156 / Avg: 156.67 / Max: 158Min: 80 / Avg: 80.67 / Max: 811. (CC) gcc options: -std=gnu99 -fopenmp -pthread -lz -lm -lgomp -lpthread

OpenBenchmarking.orgIterations Per Minute, More Is BetterGraphicsMagick 1.3.12Operation: Local Adaptive Thresholding-Ofast-Os-O3-O2-O1-O01530456075SE +/- 0.00, N = 3SE +/- 0.33, N = 3SE +/- 0.00, N = 3SE +/- 0.00, N = 3SE +/- 0.00, N = 3SE +/- 0.00, N = 3676267676731-Ofast-Os-O3-O2-O1-O01. (CC) gcc options: -std=gnu99 -fopenmp -pthread -lz -lm -lgomp -lpthread
OpenBenchmarking.orgIterations Per Minute, More Is BetterGraphicsMagick 1.3.12Operation: Local Adaptive Thresholding-Ofast-Os-O3-O2-O1-O01326395265Min: 67 / Avg: 67 / Max: 67Min: 61 / Avg: 61.67 / Max: 62Min: 67 / Avg: 67 / Max: 67Min: 67 / Avg: 67 / Max: 67Min: 67 / Avg: 67 / Max: 67Min: 31 / Avg: 31 / Max: 311. (CC) gcc options: -std=gnu99 -fopenmp -pthread -lz -lm -lgomp -lpthread

Himeno Benchmark

The Himeno benchmark is a linear solver of pressure Poisson using a point-Jacobi method. Learn more via the OpenBenchmarking.org test page.

OpenBenchmarking.orgMFLOPS, More Is BetterHimeno Benchmark 3.0Poisson Pressure Solver-Ofast-Os-O3-O2-O1-O0150300450600750SE +/- 1.24, N = 3SE +/- 7.93, N = 3SE +/- 7.89, N = 3SE +/- 8.81, N = 3SE +/- 1.69, N = 3SE +/- 2.03, N = 3704.76540.10675.92588.70410.08240.43-Ofast-Os-O2-O1-O01. (CC) gcc options: -O3
OpenBenchmarking.orgMFLOPS, More Is BetterHimeno Benchmark 3.0Poisson Pressure Solver-Ofast-Os-O3-O2-O1-O0120240360480600Min: 702.4 / Avg: 704.76 / Max: 706.58Min: 530.92 / Avg: 540.1 / Max: 555.9Min: 667.95 / Avg: 675.92 / Max: 691.71Min: 573.65 / Avg: 588.7 / Max: 604.16Min: 407.79 / Avg: 410.08 / Max: 413.39Min: 236.37 / Avg: 240.43 / Max: 242.611. (CC) gcc options: -O3

Timed PHP Compilation

OpenBenchmarking.orgSeconds, Fewer Is BetterTimed PHP Compilation 5.2.9Time To Compile-Ofast-Os-O3-O2-O1-O0816243240SE +/- 0.07, N = 3SE +/- 0.09, N = 3SE +/- 0.06, N = 3SE +/- 0.06, N = 3SE +/- 0.01, N = 3SE +/- 0.01, N = 332.9124.8332.7129.8522.1014.22-Ofast-Os-O3-O2-O1-O01. (CC) gcc options: -pedantic -ldl -lz -lm
OpenBenchmarking.orgSeconds, Fewer Is BetterTimed PHP Compilation 5.2.9Time To Compile-Ofast-Os-O3-O2-O1-O0714212835Min: 32.82 / Avg: 32.91 / Max: 33.05Min: 24.71 / Avg: 24.83 / Max: 24.99Min: 32.65 / Avg: 32.71 / Max: 32.82Min: 29.74 / Avg: 29.85 / Max: 29.94Min: 22.08 / Avg: 22.1 / Max: 22.13Min: 14.19 / Avg: 14.22 / Max: 14.241. (CC) gcc options: -pedantic -ldl -lz -lm

C-Ray

This is a test of C-Ray, a simple raytracer designed to test the floating-point CPU performance. This test is multi-threaded (16 threads per core), will shoot 8 rays per pixel for anti-aliasing, and will generate a 1600 x 1200 image. Learn more via the OpenBenchmarking.org test page.

OpenBenchmarking.orgSeconds, Fewer Is BetterC-Ray 1.1Total Time-Ofast-Os-O3-O2-O1-O020406080100SE +/- 0.01, N = 3SE +/- 0.03, N = 3SE +/- 0.01, N = 3SE +/- 0.00, N = 3SE +/- 0.01, N = 3SE +/- 0.05, N = 335.8472.8936.3846.5753.7876.23-Ofast-Os-O2-O1-O01. (CC) gcc options: -lm -lpthread -O3
OpenBenchmarking.orgSeconds, Fewer Is BetterC-Ray 1.1Total Time-Ofast-Os-O3-O2-O1-O01530456075Min: 35.83 / Avg: 35.84 / Max: 35.85Min: 72.82 / Avg: 72.89 / Max: 72.93Min: 36.36 / Avg: 36.38 / Max: 36.39Min: 46.57 / Avg: 46.57 / Max: 46.57Min: 53.76 / Avg: 53.78 / Max: 53.79Min: 76.17 / Avg: 76.23 / Max: 76.331. (CC) gcc options: -lm -lpthread -O3

Smallpt

Smallpt is a C++ global illumination renderer written in less than 100 lines of code. Global illumination is done via unbiased Monte Carlo path tracing and there is multi-threading support via the OpenMP library. Learn more via the OpenBenchmarking.org test page.

OpenBenchmarking.orgSeconds, Fewer Is BetterSmallpt 1.0Global Illumination Renderer; 100 Samples-Ofast-Os-O3-O2-O1-O0306090120150SE +/- 0.33, N = 3SE +/- 0.33, N = 3SE +/- 0.00, N = 3SE +/- 0.00, N = 3SE +/- 0.00, N = 3SE +/- 0.33, N = 33051323636116-Ofast-Os-O3-O2-O1-O01. (CXX) g++ options: -fopenmp
OpenBenchmarking.orgSeconds, Fewer Is BetterSmallpt 1.0Global Illumination Renderer; 100 Samples-Ofast-Os-O3-O2-O1-O020406080100Min: 29 / Avg: 29.67 / Max: 30Min: 50 / Avg: 50.67 / Max: 51Min: 32 / Avg: 32 / Max: 32Min: 36 / Avg: 36 / Max: 36Min: 36 / Avg: 36 / Max: 36Min: 116 / Avg: 116.33 / Max: 1171. (CXX) g++ options: -fopenmp

Open FMM Nero2D

OpenBenchmarking.orgSeconds, Fewer Is BetterOpen FMM Nero2D 2.0.2Total Time-Ofast-Os-O3-O2-O1-O010002000300040005000509.701065.63521.83529.95612.654513.59-Os-O2-O1-O01. (CXX) g++ options: -lfftw3 -llapack -lblas -lgfortran -lquadmath -lm

PostgreSQL pgbench

OpenBenchmarking.orgTPS, More Is BetterPostgreSQL pgbench 8.4.11TPC-B Transactions Per Second-Os-O3-O2-O1-O0400800120016002000SE +/- 23.00, N = 3SE +/- 60.16, N = 6SE +/- 34.85, N = 4SE +/- 12.39, N = 3SE +/- 9.33, N = 31831.301989.012004.751920.031596.13-Os-O3-O2-O1-O01. (CC) gcc options: -fno-strict-aliasing -fwrapv -lpgport -lpq -lcrypt -ldl -lm
OpenBenchmarking.orgTPS, More Is BetterPostgreSQL pgbench 8.4.11TPC-B Transactions Per Second-Os-O3-O2-O1-O030060090012001500Min: 1798.52 / Avg: 1831.3 / Max: 1875.64Min: 1801.61 / Avg: 1989.01 / Max: 2168.55Min: 1921.6 / Avg: 2004.75 / Max: 2073.88Min: 1901.19 / Avg: 1920.03 / Max: 1943.38Min: 1580.86 / Avg: 1596.13 / Max: 1613.041. (CC) gcc options: -fno-strict-aliasing -fwrapv -lpgport -lpq -lcrypt -ldl -lm

-O0

Compiler Notes: --build=x86_64-linux-gnu --disable-werror --enable-checking=release --enable-clocale=gnu --enable-gnu-unique-object --enable-languages=c,c++,go,fortran,objc,obj-c++ --enable-libstdcxx-debug --enable-libstdcxx-time=yes --enable-nls --enable-objc-gc --enable-plugin --enable-shared --enable-threads=posix --host=x86_64-linux-gnu --target=x86_64-linux-gnu --with-arch-32=i686 --with-tune=generic -v
Processor Notes: Scaling Governor: ondemand
System Notes: Compiz was running on this system.

Testing initiated at 15 September 2012 08:59 by user phoronix.

-O1

Compiler Notes: --build=x86_64-linux-gnu --disable-werror --enable-checking=release --enable-clocale=gnu --enable-gnu-unique-object --enable-languages=c,c++,go,fortran,objc,obj-c++ --enable-libstdcxx-debug --enable-libstdcxx-time=yes --enable-nls --enable-objc-gc --enable-plugin --enable-shared --enable-threads=posix --host=x86_64-linux-gnu --target=x86_64-linux-gnu --with-arch-32=i686 --with-tune=generic -v
Processor Notes: Scaling Governor: ondemand
System Notes: Compiz was running on this system.

Testing initiated at 15 September 2012 10:59 by user phoronix.

-O2

Compiler Notes: --build=x86_64-linux-gnu --disable-werror --enable-checking=release --enable-clocale=gnu --enable-gnu-unique-object --enable-languages=c,c++,go,fortran,objc,obj-c++ --enable-libstdcxx-debug --enable-libstdcxx-time=yes --enable-nls --enable-objc-gc --enable-plugin --enable-shared --enable-threads=posix --host=x86_64-linux-gnu --target=x86_64-linux-gnu --with-arch-32=i686 --with-tune=generic -v
Processor Notes: Scaling Governor: ondemand
System Notes: Compiz was running on this system.

Testing initiated at 15 September 2012 11:57 by user phoronix.

-O3

Compiler Notes: --build=x86_64-linux-gnu --disable-werror --enable-checking=release --enable-clocale=gnu --enable-gnu-unique-object --enable-languages=c,c++,go,fortran,objc,obj-c++ --enable-libstdcxx-debug --enable-libstdcxx-time=yes --enable-nls --enable-objc-gc --enable-plugin --enable-shared --enable-threads=posix --host=x86_64-linux-gnu --target=x86_64-linux-gnu --with-arch-32=i686 --with-tune=generic -v
Processor Notes: Scaling Governor: ondemand
System Notes: Compiz was running on this system.

Testing initiated at 15 September 2012 12:53 by user phoronix.

-Os

Compiler Notes: --build=x86_64-linux-gnu --disable-werror --enable-checking=release --enable-clocale=gnu --enable-gnu-unique-object --enable-languages=c,c++,go,fortran,objc,obj-c++ --enable-libstdcxx-debug --enable-libstdcxx-time=yes --enable-nls --enable-objc-gc --enable-plugin --enable-shared --enable-threads=posix --host=x86_64-linux-gnu --target=x86_64-linux-gnu --with-arch-32=i686 --with-tune=generic -v
Processor Notes: Scaling Governor: ondemand
System Notes: Compiz was running on this system.

Testing initiated at 15 September 2012 13:53 by user phoronix.

-Ofast

Processor: AMD FX-8150 Eight-Core @ 3.60GHz (8 Cores), Motherboard: ASUS Crosshair V Formula, Chipset: AMD ATI RD890 bridge, Memory: 4096MB, Disk: 60GB OCZ VERTEX2, Graphics: NVIDIA GeForce 9600 GSO 512MB (399/399MHz), Audio: Realtek ALC889, Monitor: DELL P2210H, Network: Intel 82583V Gigabit Connection

OS: Ubuntu 12.10, Kernel: 3.5.0-14-generic (x86_64), Desktop: Unity 6.4.0, Display Server: X Server 1.13.0, Display Driver: nouveau 1.0.2, OpenGL: 3.0 Mesa 8.1-devel Gallium 0.4, Compiler: GCC 4.7, File-System: ext4, Screen Resolution: 1920x1080

Compiler Notes: --build=x86_64-linux-gnu --disable-werror --enable-checking=release --enable-clocale=gnu --enable-gnu-unique-object --enable-languages=c,c++,go,fortran,objc,obj-c++ --enable-libstdcxx-debug --enable-libstdcxx-time=yes --enable-nls --enable-objc-gc --enable-plugin --enable-shared --enable-threads=posix --host=x86_64-linux-gnu --target=x86_64-linux-gnu --with-arch-32=i686 --with-tune=generic -v
Processor Notes: Scaling Governor: ondemand
System Notes: Compiz was running on this system.

Testing initiated at 15 September 2012 14:53 by user phoronix.