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.

Compare your own system(s) to this result file with the Phoronix Test Suite by running the command: phoronix-test-suite benchmark 1509040-HA-GCCINTELS17
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GCC 4.9.3
September 02 2015
 
GCC 5.2.0
September 02 2015
 
GCC 6.0.0 20150830
September 02 2015
 
Clang 3.8 SVN
September 03 2015
 
Clang 3.8 SVN OMP
September 03 2015
 
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GCC 4.9.3

Processor: Intel Core i5-6600K @ 3.50GHz (4 Cores), Motherboard: MSI Z170A GAMING PRO (MS-7984) v1.0, Chipset: Intel Sky Lake, Memory: 15360MB, Disk: 256GB TS256GSSD370S, Graphics: Intel Sky Lake (1150MHz), Audio: Realtek ALC1150, Monitor: DELL P2210H, Network: Intel Connection

OS: Ubuntu 15.10, Kernel: 4.2.0-999-generic (x86_64) 20150901, Desktop: Xfce 4.12, Display Server: X Server 1.17.2, Display Driver: intel 2.99.917, OpenGL: 3.3 Mesa 10.6.5, Compiler: GCC 4.9.3, File-System: ext4, Screen Resolution: 1920x1080

Kernel Notes: i915.preliminary_hw_support=1
Compiler Notes: --disable-multilib --enable-checking=release --enable-languages=c,c++
Processor Notes: Scaling Governor: acpi-cpufreq ondemand

GCC 5.2.0

OS: Ubuntu 15.10, Kernel: 4.2.0-999-generic (x86_64) 20150901, Desktop: Xfce 4.12, Display Server: X Server 1.17.2, Display Driver: intel 2.99.917, OpenGL: 3.3 Mesa 10.6.5, Compiler: GCC 5.2.0, File-System: ext4, Screen Resolution: 1920x1080

GCC 6.0.0 20150830

OS: Ubuntu 15.10, Kernel: 4.2.0-999-generic (x86_64) 20150901, Desktop: Xfce 4.12, Display Server: X Server 1.17.2, Display Driver: intel 2.99.917, OpenGL: 3.3 Mesa 10.6.5, Compiler: GCC 6.0.0 20150830, File-System: ext4, Screen Resolution: 1920x1080

Clang 3.8 SVN

Kernel Notes: i915.preliminary_hw_support=1
Compiler Notes: Optimized build; Built Sep 3 2015 (15:42:57); Default target: x86_64-unknown-linux-gnu; Host CPU: skylake
Processor Notes: Scaling Governor: acpi-cpufreq ondemand

Clang 3.8 SVN OMP

OS: Ubuntu 15.10, Kernel: 4.2.0-999-generic (x86_64) 20150901, Desktop: Xfce 4.12, Display Server: X Server 1.17.2, Display Driver: intel 2.99.917, OpenGL: 3.3 Mesa 10.6.5, Compiler: Clang 3.8.0 (SVN 246796) + LLVM 3.8.0svn, File-System: ext4, Screen Resolution: 1920x1080

GCC Clang Intel Skylake Compiler PerfOpenBenchmarking.orgPhoronix Test SuiteIntel 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 4.9.3GCC 5.2.0GCC 6.0.0 20150830Clang 3.8.0 (SVN 246796) + LLVM 3.8.0svnext41920x1080ProcessorMotherboardChipsetMemoryDiskGraphicsAudioMonitorNetworkOSKernelDesktopDisplay ServerDisplay DriverOpenGLCompilersFile-SystemScreen ResolutionGCC Clang Intel Skylake Compiler Perf BenchmarksSystem Logs- i915.preliminary_hw_support=1- 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: skylake - Scaling Governor: acpi-cpufreq ondemand

GCC 4.9.3GCC 5.2.0GCC 6.0.0 20150830Clang 3.8 SVNClang 3.8 SVN OMPResult OverviewPhoronix Test Suite100%185%270%354%439%SmallptJohn The RipperRodinia

GCC Clang Intel Skylake Compiler Perfrodinia: OpenMP LavaMDrodinia: OpenMP CFD Solverrodinia: OpenMP Streamclusterhmmer: Pfam Database Searchscimark2: Compositescimark2: Monte Carloscimark2: Fast Fourier Transformscimark2: Sparse Matrix Multiplyscimark2: Dense LU Matrix Factorizationscimark2: Jacobi Successive Over-Relaxationjohn-the-ripper: Blowfishjohn-the-ripper: Traditional DESjohn-the-ripper: MD5x264: H.264 Video Encodinghimeno: Poisson Pressure Solverc-ray: Total Timesmallpt: Global Illumination Renderer; 100 Samplesencode-flac: WAV To FLACencode-mp3: WAV To MP3hint: FLOATapache: Static Web Page ServingGCC 4.9.3GCC 5.2.0GCC 6.0.0 20150830Clang 3.8 SVNClang 3.8 SVN OMP215.6765.9835.279.331594.66743.37373.002739.392992.341125.2047552448400076544169.172763.0715.17284.9310.61394717206.9144411.00216.2065.1835.019.161594.01754.86372.762749.082968.231125.1147602502533377004171.092744.7615.11284.9710.77402676204.8041662.12215.7263.2735.009.241584.33750.18374.272693.952979.521125.2347822514133376902171.242720.0015.09284.9410.56404526879.2343039.62856.60183.97128.849.522467.10644.15383.762721.337111.791474.451224629133316684167.171976.5734.591235.1411.33293947985.3144513.53857.02184.63128.20122462836671667031OpenBenchmarking.org

Rodinia

Rodinia is a suite focused upon accelerating compute-intensive applications with accelerators. CUDA, OpenMP, and OpenCL parallel models are supported by the included applications. This profile utilizes the OpenCL and OpenMP test binaries at the moment. Learn more via the OpenBenchmarking.org test page.

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

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

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

Timed HMMer Search

This test searches through the Pfam database of profile hidden markov models. The search finds the domain structure of Drosophila Sevenless protein. Learn more via the OpenBenchmarking.org test page.

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

This test runs the ANSI C version of SciMark 2.0, which is a benchmark for scientific and numerical computing developed by programmers at the National Institute of Standards and Technology. This test is made up of Fast Foruier Transform, Jacobi Successive Over-relaxation, Monte Carlo, Sparse Matrix Multiply, and dense LU matrix factorization benchmarks. Learn more via the OpenBenchmarking.org test page.

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

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

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

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

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

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

John The Ripper

This is a benchmark of John The Ripper, which is a password cracker. Learn more via the OpenBenchmarking.org test page.

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

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

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

x264

This is a simple test of the x264 H.264/AVC encoder run on the CPU (OpenCL support disabled). Learn more via the OpenBenchmarking.org test page.

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

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 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

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 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

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 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

FLAC Audio Encoding

This test times how long it takes to encode a sample WAV file to FLAC format three times. Learn more via the OpenBenchmarking.org test page.

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

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 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

Hierarchical INTegration

This test runs the U.S. Department of Energy's Ames Laboratory Hierarchical INTegration (HINT) benchmark. Learn more via the OpenBenchmarking.org test page.

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

Apache Benchmark

This is a test of ab, which is the Apache benchmark program. This test profile measures how many requests per second a given system can sustain when carrying out 1,000,000 requests with 100 requests being carried out concurrently. Learn more via the OpenBenchmarking.org test page.

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

GCC 4.9.3

Processor: Intel Core i5-6600K @ 3.50GHz (4 Cores), Motherboard: MSI Z170A GAMING PRO (MS-7984) v1.0, Chipset: Intel Sky Lake, Memory: 15360MB, Disk: 256GB TS256GSSD370S, Graphics: Intel Sky Lake (1150MHz), Audio: Realtek ALC1150, Monitor: DELL P2210H, Network: Intel Connection

OS: Ubuntu 15.10, Kernel: 4.2.0-999-generic (x86_64) 20150901, Desktop: Xfce 4.12, Display Server: X Server 1.17.2, Display Driver: intel 2.99.917, OpenGL: 3.3 Mesa 10.6.5, Compiler: GCC 4.9.3, File-System: ext4, Screen Resolution: 1920x1080

Kernel Notes: i915.preliminary_hw_support=1
Compiler Notes: --disable-multilib --enable-checking=release --enable-languages=c,c++
Processor Notes: Scaling Governor: acpi-cpufreq ondemand

Testing initiated at 2 September 2015 12:16 by user phoronix.

GCC 5.2.0

Processor: Intel Core i5-6600K @ 3.50GHz (4 Cores), Motherboard: MSI Z170A GAMING PRO (MS-7984) v1.0, Chipset: Intel Sky Lake, Memory: 15360MB, Disk: 256GB TS256GSSD370S, Graphics: Intel Sky Lake (1150MHz), Audio: Realtek ALC1150, Monitor: DELL P2210H, Network: Intel Connection

OS: Ubuntu 15.10, Kernel: 4.2.0-999-generic (x86_64) 20150901, Desktop: Xfce 4.12, Display Server: X Server 1.17.2, Display Driver: intel 2.99.917, OpenGL: 3.3 Mesa 10.6.5, Compiler: GCC 5.2.0, File-System: ext4, Screen Resolution: 1920x1080

Kernel Notes: i915.preliminary_hw_support=1
Compiler Notes: --disable-multilib --enable-checking=release --enable-languages=c,c++
Processor Notes: Scaling Governor: acpi-cpufreq ondemand

Testing initiated at 2 September 2015 13:21 by user phoronix.

GCC 6.0.0 20150830

Processor: Intel Core i5-6600K @ 3.50GHz (4 Cores), Motherboard: MSI Z170A GAMING PRO (MS-7984) v1.0, Chipset: Intel Sky Lake, Memory: 15360MB, Disk: 256GB TS256GSSD370S, Graphics: Intel Sky Lake (1150MHz), Audio: Realtek ALC1150, Monitor: DELL P2210H, Network: Intel Connection

OS: Ubuntu 15.10, Kernel: 4.2.0-999-generic (x86_64) 20150901, Desktop: Xfce 4.12, Display Server: X Server 1.17.2, Display Driver: intel 2.99.917, OpenGL: 3.3 Mesa 10.6.5, Compiler: GCC 6.0.0 20150830, File-System: ext4, Screen Resolution: 1920x1080

Kernel Notes: i915.preliminary_hw_support=1
Compiler Notes: --disable-multilib --enable-checking=release --enable-languages=c,c++
Processor Notes: Scaling Governor: acpi-cpufreq ondemand

Testing initiated at 2 September 2015 14:16 by user phoronix.

Clang 3.8 SVN

Kernel Notes: i915.preliminary_hw_support=1
Compiler Notes: Optimized build; Built Sep 3 2015 (15:42:57); Default target: x86_64-unknown-linux-gnu; Host CPU: skylake
Processor Notes: Scaling Governor: acpi-cpufreq ondemand

Testing initiated at 3 September 2015 17:42 by user phoronix.

Clang 3.8 SVN OMP

Processor: Intel Core i5-6600K @ 3.50GHz (4 Cores), Motherboard: MSI Z170A GAMING PRO (MS-7984) v1.0, Chipset: Intel Sky Lake, Memory: 15360MB, Disk: 256GB TS256GSSD370S, Graphics: Intel Sky Lake (1150MHz), Audio: Realtek ALC1150, Monitor: DELL P2210H, Network: Intel Connection

OS: Ubuntu 15.10, Kernel: 4.2.0-999-generic (x86_64) 20150901, Desktop: Xfce 4.12, Display Server: X Server 1.17.2, Display Driver: intel 2.99.917, OpenGL: 3.3 Mesa 10.6.5, Compiler: Clang 3.8.0 (SVN 246796) + LLVM 3.8.0svn, File-System: ext4, Screen Resolution: 1920x1080

Kernel Notes: i915.preliminary_hw_support=1
Compiler Notes: Optimized build; Built Sep 3 2015 (15:42:57); Default target: x86_64-unknown-linux-gnu; Host CPU: skylake
Processor Notes: Scaling Governor: acpi-cpufreq ondemand

Testing initiated at 3 September 2015 19:26 by user phoronix.