ARM Cortex A15 GCC Compiler Benchmarks Benchmarks of GCC 4.6.3 vs. GCC 4.7.2 from a Samsung Exynos 5 Dual SoC with ARM Cortex A15 dual-core ARMv7 1.7GHz processor. Cortex A15 ARM compiler benchmarking for a future article on Phoronix.com.
HTML result view exported from: https://openbenchmarking.org/result/1212044-RA-CORTEX15G86&grr&sor .
ARM Cortex A15 GCC Compiler Benchmarks Processor Motherboard Memory Disk OS Kernel Desktop Display Server Compiler File-System Screen Resolution GCC 4.6.3 GCC 4.7.2 fpu=neon marm mtune=cortex-a15 mtune=cortex-a15 marm fpu=neon Exynos ARMv7 rev 4 @ 1.70GHz (2 Cores) SAMSUNG EXYNOS5 (Flattened Device Tree) 2048MB 16GB SEM16G Ubuntu 12.04 3.4.0 (armv7l) Unity 2D 5.16.0 X Server 1.11.3 GCC 4.6 ext4 1366x768 GCC 4.7 OpenBenchmarking.org Compiler Details - GCC 4.6.3: --build=arm-linux-gnueabihf --disable-sjlj-exceptions --disable-werror --enable-checking=release --enable-clocale=gnu --enable-gnu-unique-object --enable-languages=c,c++,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 - GCC 4.7.2: --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 - fpu=neon: --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 - marm: --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 - mtune=cortex-a15: --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 - mtune=cortex-a15 marm fpu=neon: --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 Details - Scaling Governor: ondemand System Details - GCC 4.6.3: Python 2.7.3.
ARM Cortex A15 GCC Compiler Benchmarks encode-ogg: WAV To Ogg encode-flac: WAV To FLAC smallpt: Global Illumination Renderer; 100 Samples primesieve: 1e12 Prime Number Generation c-ray: Total Time x264: H.264 Video Encoding vpxenc: vpxenc scimark2: Fast Fourier Transform GCC 4.6.3 GCC 4.7.2 fpu=neon marm mtune=cortex-a15 mtune=cortex-a15 marm fpu=neon 31.50 19.81 1208 957.91 447.38 10.62 1.21 37.65 31.75 19.18 1181 810.27 348.61 10.83 1.29 44.62 32.30 16.43 1190 841.75 315.31 11.04 1.33 47.46 31.83 18.52 1172 837.56 315.86 10.68 1.30 40.69 31.62 19.26 1189 820.77 327.62 10.79 1.33 40.84 32.16 16.60 1172 816.39 332.87 10.32 1.42 42.40 OpenBenchmarking.org
Ogg Encoding WAV To Ogg OpenBenchmarking.org Seconds, Fewer Is Better Ogg Encoding 1.3.0 WAV To Ogg GCC 4.6.3 mtune=cortex-a15 GCC 4.7.2 marm mtune=cortex-a15 marm fpu=neon fpu=neon 8 16 24 32 40 SE +/- 0.13, N = 5 SE +/- 0.14, N = 5 SE +/- 0.16, N = 5 SE +/- 0.31, N = 5 SE +/- 0.27, N = 5 SE +/- 0.16, N = 5 31.50 31.62 31.75 31.83 32.16 32.30 -mtune=cortex-a15 -marm -mtune=cortex-a15 -marm -mfpu=neon -mfpu=neon 1. (CC) gcc options: -O2 -ffast-math -fsigned-char -lm -logg
FLAC Audio Encoding WAV To FLAC OpenBenchmarking.org Seconds, Fewer Is Better FLAC Audio Encoding 1.2.1 WAV To FLAC fpu=neon mtune=cortex-a15 marm fpu=neon marm GCC 4.7.2 mtune=cortex-a15 GCC 4.6.3 5 10 15 20 25 SE +/- 0.04, N = 5 SE +/- 0.20, N = 10 SE +/- 0.05, N = 5 SE +/- 0.06, N = 5 SE +/- 0.28, N = 5 SE +/- 0.04, N = 5 16.43 16.60 18.52 19.18 19.26 19.81 -mfpu=neon -mtune=cortex-a15 -marm -mfpu=neon -marm -O2 -mtune=cortex-a15 -O2 1. (CXX) g++ options: -logg -lm
Smallpt Global Illumination Renderer; 100 Samples OpenBenchmarking.org Seconds, Fewer Is Better Smallpt 1.0 Global Illumination Renderer; 100 Samples marm mtune=cortex-a15 marm fpu=neon GCC 4.7.2 mtune=cortex-a15 fpu=neon GCC 4.6.3 300 600 900 1200 1500 SE +/- 3.46, N = 3 SE +/- 2.52, N = 3 SE +/- 2.08, N = 3 SE +/- 1.76, N = 3 SE +/- 2.08, N = 3 SE +/- 1.45, N = 3 1172 1172 1181 1189 1190 1208 -marm -mtune=cortex-a15 -marm -mfpu=neon -mtune=cortex-a15 -mfpu=neon 1. (CXX) g++ options: -fopenmp
Primesieve 1e12 Prime Number Generation OpenBenchmarking.org Seconds, Fewer Is Better Primesieve 4.0 1e12 Prime Number Generation GCC 4.7.2 mtune=cortex-a15 marm fpu=neon mtune=cortex-a15 marm fpu=neon GCC 4.6.3 200 400 600 800 1000 SE +/- 9.65, N = 3 SE +/- 14.22, N = 4 SE +/- 14.31, N = 3 SE +/- 10.31, N = 3 SE +/- 12.17, N = 3 SE +/- 6.82, N = 3 810.27 816.39 820.77 837.56 841.75 957.91 1. (CXX) g++ options: -O2 -fopenmp
C-Ray Total Time OpenBenchmarking.org Seconds, Fewer Is Better C-Ray 1.1 Total Time fpu=neon marm mtune=cortex-a15 mtune=cortex-a15 marm fpu=neon GCC 4.7.2 GCC 4.6.3 100 200 300 400 500 SE +/- 1.63, N = 3 SE +/- 0.45, N = 3 SE +/- 0.64, N = 3 SE +/- 2.85, N = 3 SE +/- 16.52, N = 6 SE +/- 7.03, N = 6 315.31 315.86 327.62 332.87 348.61 447.38 -mfpu=neon -marm -mtune=cortex-a15 -mtune=cortex-a15 -marm -mfpu=neon 1. (CC) gcc options: -lm -lpthread -O3
x264 H.264 Video Encoding OpenBenchmarking.org Frames Per Second, More Is Better x264 2012-10-03 H.264 Video Encoding fpu=neon GCC 4.7.2 mtune=cortex-a15 marm GCC 4.6.3 mtune=cortex-a15 marm fpu=neon 3 6 9 12 15 SE +/- 0.19, N = 3 SE +/- 0.06, N = 3 SE +/- 0.07, N = 3 SE +/- 0.21, N = 3 SE +/- 0.08, N = 3 SE +/- 0.11, N = 3 11.04 10.83 10.79 10.68 10.62 10.32
VP8 libvpx Encoding vpxenc OpenBenchmarking.org Frames Per Second, More Is Better VP8 libvpx Encoding 1.1.0 vpxenc mtune=cortex-a15 marm fpu=neon mtune=cortex-a15 fpu=neon marm GCC 4.7.2 GCC 4.6.3 0.3195 0.639 0.9585 1.278 1.5975 SE +/- 0.01, N = 3 SE +/- 0.00, N = 3 SE +/- 0.00, N = 3 SE +/- 0.01, N = 3 SE +/- 0.01, N = 3 SE +/- 0.00, N = 3 1.42 1.33 1.33 1.30 1.29 1.21 1. (CC) gcc options: -lvpx -lm -lpthread
SciMark Computational Test: Fast Fourier Transform OpenBenchmarking.org Mflops, More Is Better SciMark 2.0 Computational Test: Fast Fourier Transform fpu=neon GCC 4.7.2 mtune=cortex-a15 marm fpu=neon mtune=cortex-a15 marm GCC 4.6.3 11 22 33 44 55 SE +/- 0.63, N = 4 SE +/- 0.29, N = 4 SE +/- 0.73, N = 4 SE +/- 0.46, N = 4 SE +/- 0.88, N = 4 SE +/- 0.82, N = 4 47.46 44.62 42.40 40.84 40.69 37.65
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