GCC Clang Intel Skylake Compiler Perf

GCC vs. LLVM Clang on Intel Core i5 Skylake system. Benchmarks by Michael Larabel for a future article on Phoronix.

HTML result view exported from: https://openbenchmarking.org/result/2311041-WKG2-150904017&grs.

GCC Clang Intel Skylake Compiler PerfProcessorMotherboardChipsetMemoryDiskGraphicsAudioMonitorNetworkOSKernelDesktopDisplay ServerDisplay DriverOpenGLCompilerFile-SystemScreen ResolutionGCC 4.9.3GCC 5.2.0GCC 6.0.0 20150830Clang 3.8 SVNClang 3.8 SVN OMPIntel Core i5-6600K @ 3.50GHz (4 Cores)MSI Z170A GAMING PRO (MS-7984) v1.0Intel Sky Lake15360MB256GB TS256GSSD370SIntel Sky Lake (1150MHz)Realtek ALC1150DELL P2210HIntel ConnectionUbuntu 15.104.2.0-999-generic (x86_64) 20150901Xfce 4.12X Server 1.17.2intel 2.99.9173.3 Mesa 10.6.5GCC 4.9.3ext41920x1080GCC 5.2.0GCC 6.0.0 20150830Clang 3.8.0 (SVN 246796) + LLVM 3.8.0svnOpenBenchmarking.orgKernel Details- i915.preliminary_hw_support=1Compiler Details- GCC 4.9.3: --disable-multilib --enable-checking=release --enable-languages=c,c++- GCC 5.2.0: --disable-multilib --enable-checking=release --enable-languages=c,c++- GCC 6.0.0 20150830: --disable-multilib --enable-checking=release --enable-languages=c,c++- Clang 3.8 SVN: Optimized build; Built Sep 3 2015 (15:42:57); Default target: x86_64-unknown-linux-gnu; Host CPU: skylake- Clang 3.8 SVN OMP: Optimized build; Built Sep 3 2015 (15:42:57); Default target: x86_64-unknown-linux-gnu; Host CPU: skylakeProcessor Details- Scaling Governor: acpi-cpufreq ondemand

GCC Clang Intel Skylake Compiler Perfjohn-the-ripper: MD5smallpt: Global Illumination Renderer; 100 Samplesjohn-the-ripper: Traditional DESrodinia: OpenMP LavaMDjohn-the-ripper: Blowfishrodinia: OpenMP Streamclusterrodinia: OpenMP CFD Solverscimark2: Dense LU Matrix Factorizationc-ray: Total Timescimark2: Compositehimeno: Poisson Pressure Solverhint: FLOATscimark2: Jacobi Successive Over-Relaxationscimark2: Monte Carloencode-mp3: WAV To MP3apache: Static Web Page Servingencode-flac: WAV To FLAChmmer: Pfam Database Searchscimark2: Fast Fourier Transformx264: H.264 Video Encodingscimark2: Sparse Matrix MultiplyGCC 4.9.3GCC 5.2.0GCC 6.0.0 20150830Clang 3.8 SVNClang 3.8 SVN OMP765442824484000215.67475535.2765.982992.3415.171594.662763.07394717206.911125.20743.3710.6144411.004.939.33373.00169.172739.39770042825025333216.20476035.0165.182968.2315.111594.012744.76402676204.801125.11754.8610.7741662.124.979.16372.76171.092749.08769022825141333215.72478235.0063.272979.5215.091584.332720.00404526879.231125.23750.1810.5643039.624.949.24374.27171.242693.95166841236291333856.601224128.84183.977111.7934.592467.101976.57293947985.311474.45644.1511.3344513.535.149.52383.76167.172721.3316670316283667857.021224128.20184.63OpenBenchmarking.org

John The Ripper

Test: MD5

OpenBenchmarking.orgReal C/S, More Is BetterJohn The Ripper 1.8.0Test: MD5GCC 4.9.3GCC 5.2.0GCC 6.0.0 20150830Clang 3.8 SVNClang 3.8 SVN OMP16K32K48K64K80KSE +/- 51.00, N = 3SE +/- 0.00, N = 3SE +/- 51.00, N = 3SE +/- 0.33, N = 3SE +/- 10.67, N = 376544770047690216684166701. (CC) gcc options: -fopenmp -lcrypt

Smallpt

Global Illumination Renderer; 100 Samples

OpenBenchmarking.orgSeconds, Fewer Is BetterSmallpt 1.0Global Illumination Renderer; 100 SamplesGCC 4.9.3GCC 5.2.0GCC 6.0.0 20150830Clang 3.8 SVNClang 3.8 SVN OMP306090120150SE +/- 0.33, N = 3SE +/- 0.33, N = 3SE +/- 0.33, N = 3SE +/- 0.33, N = 3SE +/- 0.33, N = 328282812331-fopenmp=libomp -fno-exceptions1. (CXX) g++ options: -fopenmp -O3 -march=native

John The Ripper

Test: Traditional DES

OpenBenchmarking.orgReal C/S, More Is BetterJohn The Ripper 1.8.0Test: Traditional DESGCC 4.9.3GCC 5.2.0GCC 6.0.0 20150830Clang 3.8 SVNClang 3.8 SVN OMP5M10M15M20M25MSE +/- 175214.15, N = 3SE +/- 72723.98, N = 3SE +/- 10397.65, N = 3SE +/- 2333.33, N = 3SE +/- 666.67, N = 3244840002502533325141333629133362836671. (CC) gcc options: -fopenmp -lcrypt

Rodinia

Test: OpenMP LavaMD

OpenBenchmarking.orgSeconds, Fewer Is BetterRodinia 2.4Test: OpenMP LavaMDGCC 4.9.3GCC 5.2.0GCC 6.0.0 20150830Clang 3.8 SVNClang 3.8 SVN OMP2004006008001000SE +/- 0.20, N = 3SE +/- 0.09, N = 3SE +/- 0.14, N = 3SE +/- 0.10, N = 3SE +/- 0.35, N = 3215.67216.20215.72856.60857.021. (CXX) g++ options: -O2 -lOpenCL

John The Ripper

Test: Blowfish

OpenBenchmarking.orgReal C/S, More Is BetterJohn The Ripper 1.8.0Test: BlowfishGCC 4.9.3GCC 5.2.0GCC 6.0.0 20150830Clang 3.8 SVNClang 3.8 SVN OMP10002000300040005000SE +/- 3.00, N = 3SE +/- 4.10, N = 3SE +/- 1.67, N = 3SE +/- 0.67, N = 3SE +/- 1.86, N = 3475547604782122412241. (CC) gcc options: -fopenmp -lcrypt

Rodinia

Test: OpenMP Streamcluster

OpenBenchmarking.orgSeconds, Fewer Is BetterRodinia 2.4Test: OpenMP StreamclusterGCC 4.9.3GCC 5.2.0GCC 6.0.0 20150830Clang 3.8 SVNClang 3.8 SVN OMP306090120150SE +/- 0.04, N = 3SE +/- 0.05, N = 3SE +/- 0.01, N = 3SE +/- 0.58, N = 3SE +/- 0.06, N = 335.2735.0135.00128.84128.201. (CXX) g++ options: -O2 -lOpenCL

Rodinia

Test: OpenMP CFD Solver

OpenBenchmarking.orgSeconds, Fewer Is BetterRodinia 2.4Test: OpenMP CFD SolverGCC 4.9.3GCC 5.2.0GCC 6.0.0 20150830Clang 3.8 SVNClang 3.8 SVN OMP4080120160200SE +/- 0.21, N = 3SE +/- 0.19, N = 3SE +/- 0.63, N = 3SE +/- 0.19, N = 3SE +/- 0.62, N = 365.9865.1863.27183.97184.631. (CXX) g++ options: -O2 -lOpenCL

SciMark

Computational Test: Dense LU Matrix Factorization

OpenBenchmarking.orgMflops, More Is BetterSciMark 2.0Computational Test: Dense LU Matrix FactorizationGCC 4.9.3GCC 5.2.0GCC 6.0.0 20150830Clang 3.8 SVN15003000450060007500SE +/- 0.38, N = 4SE +/- 7.45, N = 4SE +/- 2.56, N = 4SE +/- 5.00, N = 42992.342968.232979.527111.791. (CXX) g++ options: -O3 -march=native

C-Ray

Total Time

OpenBenchmarking.orgSeconds, Fewer Is BetterC-Ray 1.1Total TimeGCC 4.9.3GCC 5.2.0GCC 6.0.0 20150830Clang 3.8 SVN816243240SE +/- 0.01, N = 3SE +/- 0.00, N = 3SE +/- 0.00, N = 3SE +/- 0.01, N = 315.1715.1115.0934.591. (CC) gcc options: -lm -lpthread -O3 -march=native

SciMark

Computational Test: Composite

OpenBenchmarking.orgMflops, More Is BetterSciMark 2.0Computational Test: CompositeGCC 4.9.3GCC 5.2.0GCC 6.0.0 20150830Clang 3.8 SVN5001000150020002500SE +/- 0.46, N = 4SE +/- 1.66, N = 4SE +/- 0.86, N = 4SE +/- 1.28, N = 41594.661594.011584.332467.101. (CXX) g++ options: -O3 -march=native

Himeno Benchmark

Poisson Pressure Solver

OpenBenchmarking.orgMFLOPS, More Is BetterHimeno Benchmark 3.0Poisson Pressure SolverGCC 4.9.3GCC 5.2.0GCC 6.0.0 20150830Clang 3.8 SVN6001200180024003000SE +/- 0.74, N = 3SE +/- 14.56, N = 3SE +/- 3.11, N = 3SE +/- 1.58, N = 32763.072744.762720.001976.571. (CC) gcc options: -O3 -march=native

Hierarchical INTegration

Test: FLOAT

OpenBenchmarking.orgQUIPs, More Is BetterHierarchical INTegration 1.0Test: FLOATGCC 4.9.3GCC 5.2.0GCC 6.0.0 20150830Clang 3.8 SVN90M180M270M360M450MSE +/- 252594.71, N = 3SE +/- 279552.00, N = 3SE +/- 358895.73, N = 3SE +/- 129692.07, N = 3394717206.91402676204.80404526879.23293947985.311. (CC) gcc options: -O3 -march=native -lm

SciMark

Computational Test: Jacobi Successive Over-Relaxation

OpenBenchmarking.orgMflops, More Is BetterSciMark 2.0Computational Test: Jacobi Successive Over-RelaxationGCC 4.9.3GCC 5.2.0GCC 6.0.0 20150830Clang 3.8 SVN30060090012001500SE +/- 0.12, N = 4SE +/- 0.03, N = 4SE +/- 0.01, N = 4SE +/- 0.06, N = 41125.201125.111125.231474.451. (CXX) g++ options: -O3 -march=native

SciMark

Computational Test: Monte Carlo

OpenBenchmarking.orgMflops, More Is BetterSciMark 2.0Computational Test: Monte CarloGCC 4.9.3GCC 5.2.0GCC 6.0.0 20150830Clang 3.8 SVN160320480640800SE +/- 0.01, N = 4SE +/- 0.02, N = 4SE +/- 0.00, N = 4SE +/- 0.05, N = 4743.37754.86750.18644.151. (CXX) g++ options: -O3 -march=native

LAME MP3 Encoding

WAV To MP3

OpenBenchmarking.orgSeconds, Fewer Is BetterLAME MP3 Encoding 3.99.3WAV To MP3GCC 4.9.3GCC 5.2.0GCC 6.0.0 20150830Clang 3.8 SVN3691215SE +/- 0.00, N = 5SE +/- 0.00, N = 5SE +/- 0.00, N = 5SE +/- 0.00, N = 510.6110.7710.5611.331. (CC) gcc options: -pipe -O3 -march=native -lm

Apache Benchmark

Static Web Page Serving

OpenBenchmarking.orgRequests Per Second, More Is BetterApache Benchmark 2.4.7Static Web Page ServingGCC 4.9.3GCC 5.2.0GCC 6.0.0 20150830Clang 3.8 SVN10K20K30K40K50KSE +/- 154.80, N = 3SE +/- 288.36, N = 3SE +/- 1006.67, N = 6SE +/- 388.92, N = 344411.0041662.1243039.6244513.531. (CC) gcc options: -shared -fPIC -pthread -O3 -march=native

FLAC Audio Encoding

WAV To FLAC

OpenBenchmarking.orgSeconds, Fewer Is BetterFLAC Audio Encoding 1.3.1WAV To FLACGCC 4.9.3GCC 5.2.0GCC 6.0.0 20150830Clang 3.8 SVN1.15652.3133.46954.6265.7825SE +/- 0.00, N = 5SE +/- 0.00, N = 5SE +/- 0.00, N = 5SE +/- 0.00, N = 54.934.974.945.14-fvisibility=hidden-fvisibility=hidden-fvisibility=hidden-logg1. (CXX) g++ options: -O3 -march=native -lm

Timed HMMer Search

Pfam Database Search

OpenBenchmarking.orgSeconds, Fewer Is BetterTimed HMMer Search 2.3.2Pfam Database SearchGCC 4.9.3GCC 5.2.0GCC 6.0.0 20150830Clang 3.8 SVN3691215SE +/- 0.05, N = 3SE +/- 0.00, N = 3SE +/- 0.06, N = 3SE +/- 0.03, N = 39.339.169.249.521. (CC) gcc options: -O3 -march=native -pthread -lhmmer -lsquid -lm

SciMark

Computational Test: Fast Fourier Transform

OpenBenchmarking.orgMflops, More Is BetterSciMark 2.0Computational Test: Fast Fourier TransformGCC 4.9.3GCC 5.2.0GCC 6.0.0 20150830Clang 3.8 SVN80160240320400SE +/- 1.15, N = 4SE +/- 0.57, N = 4SE +/- 0.67, N = 4SE +/- 0.82, N = 4373.00372.76374.27383.761. (CXX) g++ options: -O3 -march=native

x264

H.264 Video Encoding

OpenBenchmarking.orgFrames Per Second, More Is Betterx264 2014-08-30H.264 Video EncodingGCC 4.9.3GCC 5.2.0GCC 6.0.0 20150830Clang 3.8 SVN4080120160200SE +/- 0.56, N = 5SE +/- 0.39, N = 5SE +/- 0.43, N = 5SE +/- 0.27, N = 5169.17171.09171.24167.171. (CC) gcc options: -ldl -m64 -lm -lpthread -O3 -ffast-math -march=native -std=gnu99 -fomit-frame-pointer -fno-tree-vectorize

SciMark

Computational Test: Sparse Matrix Multiply

OpenBenchmarking.orgMflops, More Is BetterSciMark 2.0Computational Test: Sparse Matrix MultiplyGCC 4.9.3GCC 5.2.0GCC 6.0.0 20150830Clang 3.8 SVN6001200180024003000SE +/- 2.49, N = 4SE +/- 1.46, N = 4SE +/- 2.13, N = 3SE +/- 2.25, N = 42739.392749.082693.952721.331. (CXX) g++ options: -O3 -march=native

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