LLVM-Clang vs. GCC On Calxeda ARMv7 Quad-Core

Benchmarking LLVM-Clang and GCC from Ubuntu 12.10 Quantal repository for performance comparison of a single-node 1.1GHz Calxeda Highbank node.

Compare your own system(s) to this result file with the Phoronix Test Suite by running the command: phoronix-test-suite benchmark 1210189-RA-LLVMCLANG48
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Clang 3.0
October 01 2012
 
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October 01 2012
 
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LLVM-Clang vs. GCC On Calxeda ARMv7 Quad-CoreOpenBenchmarking.orgPhoronix Test Suite 10.6.1ARMv7 rev 0 (4 Cores)Highbank4096MB256GB SAMSUNG MZ7PC256Ubuntu 12.103.5.0-1000-highbank (armv7l)Clang 3.0-6ubuntu3GCC 4.7ext4ProcessorMotherboardMemoryDiskOSKernelCompilersFile-SystemLLVM-Clang Vs. GCC On Calxeda ARMv7 Quad-Core BenchmarksSystem Logs- 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

LLVM-Clang vs. GCC On Calxeda ARMv7 Quad-Coreffte: N=64, 1D Complex FFT Routinecompress-7zip: Compress Speed Testc-ray: Total Timeencode-mp3: WAV To MP3Clang 3.0GCC 4.7.2499.911689574.35119.26506.931665390.20121.79OpenBenchmarking.org

FFTE

FFTE is a package by Daisuke Takahashi to compute Discrete Fourier Transforms of 1-, 2- and 3- dimensional sequences of length (2^p)*(3^q)*(5^r). Learn more via the OpenBenchmarking.org test page.

OpenBenchmarking.orgMFLOPS, More Is BetterFFTE 5.0Test: N=64, 1D Complex FFT RoutineClang 3.0GCC 4.7.2110220330440550SE +/- 7.55, N = 3SE +/- 0.03, N = 3499.91506.931. (F9X) gfortran options: -O3 -fomit-frame-pointer -fopenmp -lmpichf90 -lmpich -lopa -lmpl -lrt -lcr -lpthread
OpenBenchmarking.orgMFLOPS, More Is BetterFFTE 5.0Test: N=64, 1D Complex FFT RoutineClang 3.0GCC 4.7.290180270360450Min: 484.81 / Avg: 499.91 / Max: 507.46Min: 506.86 / Avg: 506.93 / Max: 506.971. (F9X) gfortran options: -O3 -fomit-frame-pointer -fopenmp -lmpichf90 -lmpich -lopa -lmpl -lrt -lcr -lpthread

7-Zip Compression

OpenBenchmarking.orgMIPS, More Is Better7-Zip Compression 9.20.1Compress Speed TestClang 3.0GCC 4.7.2400800120016002000SE +/- 7.75, N = 3SE +/- 11.06, N = 3168916651. (CXX) g++ options: -pipe -lpthread
OpenBenchmarking.orgMIPS, More Is Better7-Zip Compression 9.20.1Compress Speed TestClang 3.0GCC 4.7.230060090012001500Min: 1679 / Avg: 1688.67 / Max: 1704Min: 1652 / Avg: 1665 / Max: 16871. (CXX) g++ options: -pipe -lpthread

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 TimeClang 3.0GCC 4.7.2120240360480600SE +/- 0.54, N = 3SE +/- 0.60, N = 3574.35390.201. (CC) gcc options: -lm -lpthread -O3 -march=armv7
OpenBenchmarking.orgSeconds, Fewer Is BetterC-Ray 1.1Total TimeClang 3.0GCC 4.7.2100200300400500Min: 573.79 / Avg: 574.35 / Max: 575.43Min: 389.6 / Avg: 390.2 / Max: 391.41. (CC) gcc options: -lm -lpthread -O3 -march=armv7

LAME MP3 Encoding

LAME is an MP3 encoder licensed under the LGPL. This test measures the time required to encode a WAV file to MP3 format. Learn more via the OpenBenchmarking.org test page.

OpenBenchmarking.orgSeconds, Fewer Is BetterLAME MP3 Encoding 3.99.3WAV To MP3Clang 3.0GCC 4.7.2306090120150SE +/- 1.68, N = 5SE +/- 1.55, N = 5119.26121.79
OpenBenchmarking.orgSeconds, Fewer Is BetterLAME MP3 Encoding 3.99.3WAV To MP3Clang 3.0GCC 4.7.220406080100Min: 116.4 / Avg: 119.26 / Max: 123.51Min: 119.09 / Avg: 121.79 / Max: 125.72