ARM GCC 4.7.2 Cortex-A15 Compiler Optimizations

Benchmarking compiler optimization levels on GCC 4.7.2 from a Google Nexus 10 with Samsung Exynos 5 Dual SoC. It's an ARM Cortex-A15 dual-core 1.7GHz processor. Benchmarking by Michael Larabel for a future article on Phoronix.

Compare your own system(s) to this result file with the Phoronix Test Suite by running the command: phoronix-test-suite benchmark 1302284-FO-ARMGCC47227
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-Os
February 26 2013
 
-O0
February 25 2013
 
-O1
February 25 2013
 
-O2
February 25 2013
 
-O3
February 25 2013
 
-Ofast
February 26 2013
 
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-O3

Compiler Notes: --build=arm-linux-gnueabihf --disable-libitm --disable-sjlj-exceptions --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-multilib --enable-nls --enable-objc-gc --enable-plugin --enable-shared --enable-threads=posix --host=arm-linux-gnueabihf --target=arm-linux-gnueabihf --with-arch=armv7-a --with-float=hard --with-fpu=vfpv3-d16 --with-mode=thumb -v
Processor Notes: Scaling Governor: interactive

-O2

-O1

-O0

-Os

-Ofast

Processor: ARMv7 rev 4 @ 1.70GHz (2 Cores), Motherboard: Manta, Memory: 2048MB, Disk: 16GB MAG2GA

OS: Ubuntu 12.10, Kernel: 3.4.5-gf68518f (armv7l), Compiler: GCC 4.7, File-System: ext4, Screen Resolution: 2560x1600

ARM GCC 4.7.2 Cortex-A15 Compiler OptimizationsOpenBenchmarking.orgPhoronix Test SuiteARMv7 rev 4 @ 1.70GHz (2 Cores)Manta2048MB16GB MAG2GAUbuntu 12.103.4.5-gf68518f (armv7l)GCC 4.7ext42560x1600ProcessorMotherboardMemoryDiskOSKernelCompilerFile-SystemScreen ResolutionARM GCC 4.7.2 Cortex-A15 Compiler Optimizations PerformanceSystem Logs- --build=arm-linux-gnueabihf --disable-libitm --disable-sjlj-exceptions --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-multilib --enable-nls --enable-objc-gc --enable-plugin --enable-shared --enable-threads=posix --host=arm-linux-gnueabihf --target=arm-linux-gnueabihf --with-arch=armv7-a --with-float=hard --with-fpu=vfpv3-d16 --with-mode=thumb -v - Scaling Governor: interactive

-O3-O2-O1-O0-Os-OfastResult OverviewPhoronix Test Suite100%199%299%398%498%SmallptGraphicsMagickOpus Codec EncodingOpen FMM Nero2DGraphicsMagickC-RayGraphicsMagickTimed PHP CompilationHimeno BenchmarkGraphicsMagickGraphicsMagickG.I.R.1.SL.A.TW.O.E.O.DTotal TimeSharpenTotal TimeResizingTime To CompileP.P.SHWB Color SpaceBlur

ARM GCC 4.7.2 Cortex-A15 Compiler Optimizationsgraphics-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 Samplesencode-opus: WAV, Opus Encode, Opus Decodenero2d: Total Time-O3-O2-O1-O0-Os-Ofast3023404722141.55285.41349.83129746.642149.053123404722140.04252.76523.5832947.802142.953019364719108.57191.56653.1736151.842300.701671627660.43117.17909.851388163.437634.242920364819100.58204.10588.3878455.783505.783123395522129.49286.52332.8727945.732145.44OpenBenchmarking.org

GraphicsMagick

OpenBenchmarking.orgIterations Per Minute, More Is BetterGraphicsMagick 1.3.16Operation: Blur-Ofast-Os-O0-O1-O2-O3714212835SE +/- 0.00, N = 3SE +/- 0.00, N = 3SE +/- 0.25, N = 4SE +/- 0.00, N = 3SE +/- 0.33, N = 3SE +/- 0.33, N = 3312916303130-Ofast-Os-O0-O1-O2-O21. (CC) gcc options: -std=gnu99 -fopenmp -pthread -lXext -lSM -lICE -lX11 -lbz2 -lz -lm -lgomp -lpthread

OpenBenchmarking.orgIterations Per Minute, More Is BetterGraphicsMagick 1.3.16Operation: Sharpen-Ofast-Os-O0-O1-O2-O3612182430SE +/- 0.33, N = 3SE +/- 0.33, N = 3SE +/- 0.00, N = 3SE +/- 0.33, N = 3SE +/- 0.33, N = 6SE +/- 0.33, N = 323207192323-Ofast-Os-O0-O1-O2-O21. (CC) gcc options: -std=gnu99 -fopenmp -pthread -lXext -lSM -lICE -lX11 -lbz2 -lz -lm -lgomp -lpthread

OpenBenchmarking.orgIterations Per Minute, More Is BetterGraphicsMagick 1.3.16Operation: Resizing-Ofast-Os-O0-O1-O2-O3918273645SE +/- 0.00, N = 3SE +/- 0.00, N = 3SE +/- 0.00, N = 3SE +/- 0.33, N = 3SE +/- 0.00, N = 3SE +/- 0.00, N = 3393616364040-Ofast-Os-O0-O1-O2-O21. (CC) gcc options: -std=gnu99 -fopenmp -pthread -lXext -lSM -lICE -lX11 -lbz2 -lz -lm -lgomp -lpthread

OpenBenchmarking.orgIterations Per Minute, More Is BetterGraphicsMagick 1.3.16Operation: HWB Color Space-Ofast-Os-O0-O1-O2-O31224364860SE +/- 0.88, N = 3SE +/- 0.00, N = 3SE +/- 0.00, N = 3SE +/- 0.33, N = 3SE +/- 0.00, N = 3SE +/- 0.00, N = 3554827474747-Ofast-Os-O0-O1-O2-O21. (CC) gcc options: -std=gnu99 -fopenmp -pthread -lXext -lSM -lICE -lX11 -lbz2 -lz -lm -lgomp -lpthread

OpenBenchmarking.orgIterations Per Minute, More Is BetterGraphicsMagick 1.3.16Operation: Local Adaptive Thresholding-Ofast-Os-O0-O1-O2-O3510152025SE +/- 0.00, N = 3SE +/- 0.00, N = 3SE +/- 0.00, N = 3SE +/- 0.33, N = 3SE +/- 0.33, N = 3SE +/- 0.33, N = 322196192222-Ofast-Os-O0-O1-O2-O21. (CC) gcc options: -std=gnu99 -fopenmp -pthread -lXext -lSM -lICE -lX11 -lbz2 -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-O0-O1-O2-O3306090120150SE +/- 1.15, N = 3SE +/- 1.80, N = 6SE +/- 0.29, N = 3SE +/- 1.57, N = 3SE +/- 5.17, N = 6SE +/- 1.96, N = 3129.49100.5860.43108.57140.04141.55-Ofast-Os-O0-O1-O21. (CC) gcc options: -O3

Timed PHP Compilation

OpenBenchmarking.orgSeconds, Fewer Is BetterTimed PHP Compilation 5.2.9Time To Compile-Ofast-Os-O0-O1-O2-O360120180240300SE +/- 0.83, N = 3SE +/- 0.90, N = 3SE +/- 0.25, N = 3SE +/- 0.85, N = 3SE +/- 0.77, N = 3SE +/- 1.07, N = 3286.52204.10117.17191.56252.76285.41-Ofast-Os-O0-O1-O2-O21. (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-O0-O1-O2-O32004006008001000SE +/- 3.01, N = 3SE +/- 3.84, N = 3SE +/- 1.42, N = 3SE +/- 15.01, N = 6SE +/- 8.88, N = 4SE +/- 4.87, N = 5332.87588.38909.85653.17523.58349.83-Ofast-Os-O0-O1-O21. (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-O0-O1-O2-O330060090012001500SE +/- 1.20, N = 3SE +/- 3.48, N = 3SE +/- 25.31, N = 3SE +/- 1.53, N = 3SE +/- 2.73, N = 3SE +/- 4.18, N = 327978413883613291297-Ofast-Os-O0-O1-O21. (CXX) g++ options: -fopenmp

Opus Codec Encoding

OpenBenchmarking.orgSeconds, Fewer Is BetterOpus Codec Encoding 1.0.1WAV, Opus Encode, Opus Decode-Ofast-Os-O0-O1-O2-O34080120160200SE +/- 0.03, N = 5SE +/- 0.03, N = 5SE +/- 0.17, N = 5SE +/- 0.17, N = 5SE +/- 0.05, N = 5SE +/- 0.02, N = 545.7355.78163.4351.8447.8046.64-Ofast-Os-O0-O1-O2-O3 -ffast-math1. (CC) gcc options: -std=gnu99 -fPIE -pie -logg -lm -lopus

Open FMM Nero2D

OpenBenchmarking.orgSeconds, Fewer Is BetterOpen FMM Nero2D 2.0.2Total Time-Ofast-Os-O0-O1-O2-O3160032004800640080002145.443505.787634.242300.702142.952149.05-Ofast-Os-O0-O1-O2-O21. (CXX) g++ options: -lfftw3 -llapack -lblas -lgfortran -lm

-O3

Compiler Notes: --build=arm-linux-gnueabihf --disable-libitm --disable-sjlj-exceptions --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-multilib --enable-nls --enable-objc-gc --enable-plugin --enable-shared --enable-threads=posix --host=arm-linux-gnueabihf --target=arm-linux-gnueabihf --with-arch=armv7-a --with-float=hard --with-fpu=vfpv3-d16 --with-mode=thumb -v
Processor Notes: Scaling Governor: interactive

Testing initiated at 25 February 2013 02:52 by user root.

-O2

Compiler Notes: --build=arm-linux-gnueabihf --disable-libitm --disable-sjlj-exceptions --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-multilib --enable-nls --enable-objc-gc --enable-plugin --enable-shared --enable-threads=posix --host=arm-linux-gnueabihf --target=arm-linux-gnueabihf --with-arch=armv7-a --with-float=hard --with-fpu=vfpv3-d16 --with-mode=thumb -v
Processor Notes: Scaling Governor: interactive

Testing initiated at 25 February 2013 14:16 by user root.

-O1

Compiler Notes: --build=arm-linux-gnueabihf --disable-libitm --disable-sjlj-exceptions --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-multilib --enable-nls --enable-objc-gc --enable-plugin --enable-shared --enable-threads=posix --host=arm-linux-gnueabihf --target=arm-linux-gnueabihf --with-arch=armv7-a --with-float=hard --with-fpu=vfpv3-d16 --with-mode=thumb -v
Processor Notes: Scaling Governor: interactive

Testing initiated at 25 February 2013 16:45 by user root.

-O0

Compiler Notes: --build=arm-linux-gnueabihf --disable-libitm --disable-sjlj-exceptions --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-multilib --enable-nls --enable-objc-gc --enable-plugin --enable-shared --enable-threads=posix --host=arm-linux-gnueabihf --target=arm-linux-gnueabihf --with-arch=armv7-a --with-float=hard --with-fpu=vfpv3-d16 --with-mode=thumb -v
Processor Notes: Scaling Governor: interactive

Testing initiated at 25 February 2013 19:34 by user root.

-Os

Compiler Notes: --build=arm-linux-gnueabihf --disable-libitm --disable-sjlj-exceptions --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-multilib --enable-nls --enable-objc-gc --enable-plugin --enable-shared --enable-threads=posix --host=arm-linux-gnueabihf --target=arm-linux-gnueabihf --with-arch=armv7-a --with-float=hard --with-fpu=vfpv3-d16 --with-mode=thumb -v
Processor Notes: Scaling Governor: interactive

Testing initiated at 26 February 2013 01:35 by user root.

-Ofast

Processor: ARMv7 rev 4 @ 1.70GHz (2 Cores), Motherboard: Manta, Memory: 2048MB, Disk: 16GB MAG2GA

OS: Ubuntu 12.10, Kernel: 3.4.5-gf68518f (armv7l), Compiler: GCC 4.7, File-System: ext4, Screen Resolution: 2560x1600

Compiler Notes: --build=arm-linux-gnueabihf --disable-libitm --disable-sjlj-exceptions --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-multilib --enable-nls --enable-objc-gc --enable-plugin --enable-shared --enable-threads=posix --host=arm-linux-gnueabihf --target=arm-linux-gnueabihf --with-arch=armv7-a --with-float=hard --with-fpu=vfpv3-d16 --with-mode=thumb -v
Processor Notes: Scaling Governor: interactive

Testing initiated at 26 February 2013 04:48 by user root.