GCC 4.8 vs. LLVM Clang 3.3 SVN Compiler Benchmarking

GCC 4.7.2 versus GCC 4.8.0 versus LLVM Clang 3.2 versus LLVM Clang 3.3 SVN compiler benchmarking from an Intel Core i7 990X Gulftown system running Ubuntu 13.04 Linux. Compiler GCC benchmarks for a future article on Phoronix.com.

Compare your own system(s) to this result file with the Phoronix Test Suite by running the command: phoronix-test-suite benchmark 1303255-FO-GCC48LLVM06
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GCC 4.7.2
March 20 2013
 
GCC 4.8.0
March 20 2013
 
LLVM Clang 3.2
March 25 2013
 
LLVM Clang 3.3 SVN
March 25 2013
 
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GCC 4.7.2

Processor: Intel Core i7 990X @ 3.47GHz (12 Cores), Motherboard: MSI X58M (MS-7593) v1.0, Chipset: Intel 5520/5500/X58 + ICH10R, Memory: 12288MB, Disk: 1000GB Western Digital WD1003FBYX-0, Graphics: NVIDIA GeForce 8400 GS 512MB (500/333MHz), Audio: Realtek ALC889, Network: Realtek RTL8111/8168B

OS: Ubuntu 13.04, Kernel: 3.8.0-12-generic (x86_64), Desktop: Unity 6.6.0, Display Server: X Server 1.13.2, Display Driver: NVIDIA 313.26, OpenGL: 3.3.0 NVIDIA 313.26, Compiler: GCC 4.7.2, File-System: ext4, Screen Resolution: 1920x1080

Compiler Notes: --enable-checking=release --enable-languages=c,c++,fortran --enable-lto
Processor Notes: Scaling Governor: ondemand

GCC 4.8.0

OS: Ubuntu 13.04, Kernel: 3.8.0-12-generic (x86_64), Desktop: Unity 6.6.0, Display Server: X Server 1.13.2, Display Driver: NVIDIA 313.26, OpenGL: 3.3.0 NVIDIA 313.26, Compiler: GCC 4.7, File-System: ext4, Screen Resolution: 1920x1080

Compiler Notes: --build=x86_64-linux-gnu --disable-cloog-version-check --disable-ppl-version-check --disable-werror --enable-checking=release --enable-clocale=gnu --enable-cloog-backend=ppl --enable-gnu-unique-object --enable-languages=c,c++,go,fortran,objc,obj-c++ --enable-libstdcxx-debug --enable-libstdcxx-time=yes --enable-multiarch --enable-nls --enable-objc-gc --enable-plugin --enable-shared --enable-threads=posix --host=x86_64-linux-gnu --target=x86_64-linux-gnu --with-abi=m64 --with-arch-32=i686 --with-cloog --with-multilib-list=m32,m64,mx32 --with-tune=generic -v
Processor Notes: Scaling Governor: ondemand
OpenCL Notes: GPU Compute Cores: 8
System Notes: GPU Compute Cores: 8.

LLVM Clang 3.2

OS: Ubuntu 13.04, Kernel: 3.8.0-12-generic (x86_64), Desktop: Unity 6.6.0, Display Server: X Server 1.13.2, Display Driver: NVIDIA 313.26, OpenGL: 3.3.0 NVIDIA 313.26, Compiler: Clang 3.2 + LLVM 3.2svn, File-System: ext4, Screen Resolution: 1920x1080

Compiler Notes: Optimized build; Built Mar 25 2013 (15:48:44); Default target: x86_64-unknown-linux-gnu; Host CPU: corei7
Processor Notes: Scaling Governor: ondemand

LLVM Clang 3.3 SVN

OS: Ubuntu 13.04, Kernel: 3.8.0-12-generic (x86_64), Desktop: Unity 6.6.0, Display Server: X Server 1.13.2, Display Driver: NVIDIA 313.26, OpenGL: 3.3.0 NVIDIA 313.26, Compiler: Clang 3.3 (SVN 177878) + LLVM 3.3svn, File-System: ext4, Screen Resolution: 1920x1080

Compiler Notes: Optimized build; Built Mar 25 2013 (12:54:43); Default target: x86_64-unknown-linux-gnu; Host CPU: corei7
Processor Notes: Scaling Governor: ondemand

GCC 4.8 vs. LLVM Clang 3.3 SVN Compiler BenchmarkingOpenBenchmarking.orgPhoronix Test SuiteIntel Core i7 990X @ 3.47GHz (12 Cores)MSI X58M (MS-7593) v1.0Intel 5520/5500/X58 + ICH10R12288MB1000GB Western Digital WD1003FBYX-0NVIDIA GeForce 8400 GS 512MB (500/333MHz)Realtek ALC889Realtek RTL8111/8168BUbuntu 13.043.8.0-12-generic (x86_64)Unity 6.6.0X Server 1.13.2NVIDIA 313.263.3.0 NVIDIA 313.26GCC 4.7.2GCC 4.7Clang 3.2 + LLVM 3.2svnClang 3.3 (SVN 177878) + LLVM 3.3svnext41920x1080ProcessorMotherboardChipsetMemoryDiskGraphicsAudioNetworkOSKernelDesktopDisplay ServerDisplay DriverOpenGLCompilersFile-SystemScreen ResolutionGCC 4.8 Vs. LLVM Clang 3.3 SVN Compiler Benchmarking PerformanceSystem Logs- GCC 4.7.2: --enable-checking=release --enable-languages=c,c++,fortran --enable-lto- GCC 4.8.0: --build=x86_64-linux-gnu --disable-cloog-version-check --disable-ppl-version-check --disable-werror --enable-checking=release --enable-clocale=gnu --enable-cloog-backend=ppl --enable-gnu-unique-object --enable-languages=c,c++,go,fortran,objc,obj-c++ --enable-libstdcxx-debug --enable-libstdcxx-time=yes --enable-multiarch --enable-nls --enable-objc-gc --enable-plugin --enable-shared --enable-threads=posix --host=x86_64-linux-gnu --target=x86_64-linux-gnu --with-abi=m64 --with-arch-32=i686 --with-cloog --with-multilib-list=m32,m64,mx32 --with-tune=generic -v - LLVM Clang 3.2: Optimized build; Built Mar 25 2013 (15:48:44); Default target: x86_64-unknown-linux-gnu; Host CPU: corei7 - LLVM Clang 3.3 SVN: Optimized build; Built Mar 25 2013 (12:54:43); Default target: x86_64-unknown-linux-gnu; Host CPU: corei7 - Scaling Governor: ondemand- GCC 4.8.0: GPU Compute Cores: 8- GCC 4.8.0: GPU Compute Cores: 8.

GCC 4.7.2GCC 4.8.0LLVM Clang 3.2LLVM Clang 3.3 SVNLogarithmic Result OverviewPhoronix Test SuiteSmallptN-QueensPrimesieveTimed ImageMagick CompilationC-RayLAMMPS Molecular Dynamics SimulatorBotanFLAC Audio EncodingBLAKE2Himeno BenchmarkTimed MAFFT AlignmentMinionLAME MP3 EncodingFFmpeg

GCC 4.8 vs. LLVM Clang 3.3 SVN Compiler Benchmarkingbotan: Tigerbotan: KASUMIbotan: AES-256botan: Twofishbotan: CAST-256botan: X9.19-MAChimeno: Poisson Pressure Solverjohn-the-ripper: Blowfishjohn-the-ripper: Traditional DESjohn-the-ripper: MD5blake2: Phoronix Test Suite v4.4.1lammps: Rhodopsin Proteinmafft: Multiple Sequence Alignmentbuild-imagemagick: Time To Compilec-ray: Total Timeprimesieve: 1e12 Prime Number Generationsmallpt: Global Illumination Renderer; 100 Samplesencode-flac: WAV To FLACencode-mp3: WAV To MP3ffmpeg: H.264 HD To NTSC DVminion: Gracefulminion: Solitaireminion: Quasigroupn-queens: Elapsed TimeGCC 4.7.2GCC 4.8.0LLVM Clang 3.2LLVM Clang 3.3 SVN360.4339.35154.60175.1385.7177.121527.025.9649.365.6758.0523.7866.67326.9917.2319.0671.58107.44157.8128.82376.2637.91133.38172.7187.3776.191337.12727212345000339966.1648.465.7259.6718.8366.79326.9417.0019.3572.40103.05153.9329.66357.4039.34154.74175.1385.5676.771487.339014102667259876.7749.716.1925.0323.7866.57317.9817.4119.2471.84108.48156.36257.21381.8965.75144.74169.82109.4374.871499.509094105667285856.8541.366.1324.7923.74419.762857.8816.8319.3170.29114.74159.10257.21OpenBenchmarking.org

Botan

OpenBenchmarking.orgMbytes/s, More Is BetterBotan 1.10.3Test: TigerGCC 4.7.2GCC 4.8.0LLVM Clang 3.2LLVM Clang 3.3 SVN80160240320400360.43376.26357.40381.891. (CXX) g++ options: -m64 -ldl -lpthread -lrt

OpenBenchmarking.orgMbytes/s, More Is BetterBotan 1.10.3Test: KASUMIGCC 4.7.2GCC 4.8.0LLVM Clang 3.2LLVM Clang 3.3 SVN153045607539.3537.9139.3465.751. (CXX) g++ options: -m64 -ldl -lpthread -lrt

OpenBenchmarking.orgMbytes/s, More Is BetterBotan 1.10.3Test: AES-256GCC 4.7.2GCC 4.8.0LLVM Clang 3.2LLVM Clang 3.3 SVN306090120150154.60133.38154.74144.741. (CXX) g++ options: -m64 -ldl -lpthread -lrt

OpenBenchmarking.orgMbytes/s, More Is BetterBotan 1.10.3Test: TwofishGCC 4.7.2GCC 4.8.0LLVM Clang 3.2LLVM Clang 3.3 SVN4080120160200175.13172.71175.13169.821. (CXX) g++ options: -m64 -ldl -lpthread -lrt

OpenBenchmarking.orgMbytes/s, More Is BetterBotan 1.10.3Test: CAST-256GCC 4.7.2GCC 4.8.0LLVM Clang 3.2LLVM Clang 3.3 SVN2040608010085.7187.3785.56109.431. (CXX) g++ options: -m64 -ldl -lpthread -lrt

OpenBenchmarking.orgMbytes/s, More Is BetterBotan 1.10.3Test: X9.19-MACGCC 4.7.2GCC 4.8.0LLVM Clang 3.2LLVM Clang 3.3 SVN2040608010077.1276.1976.7774.871. (CXX) g++ options: -m64 -ldl -lpthread -lrt

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 4.7.2GCC 4.8.0LLVM Clang 3.2LLVM Clang 3.3 SVN30060090012001500SE +/- 2.54, N = 3SE +/- 5.16, N = 3SE +/- 2.43, N = 3SE +/- 2.56, N = 31527.021337.121487.331499.501. (CC) gcc options: -O3 -march=native

John The Ripper

OpenBenchmarking.orgReal C/S, More Is BetterJohn The Ripper 1.7.9-jumbo-7Test: BlowfishGCC 4.8.0LLVM Clang 3.2LLVM Clang 3.3 SVN16003200480064008000SE +/- 0.33, N = 3SE +/- 1.76, N = 3SE +/- 0.67, N = 372729019091. (CC) gcc options: -lssl -lcrypto -lm -lz -fopenmp -lcrypt -ldl

OpenBenchmarking.orgReal C/S, More Is BetterJohn The Ripper 1.7.9-jumbo-7Test: Traditional DESGCC 4.8.0LLVM Clang 3.2LLVM Clang 3.3 SVN3M6M9M12M15MSE +/- 41000.00, N = 3SE +/- 1855.92, N = 3SE +/- 6691.62, N = 312345000410266741056671. (CC) gcc options: -lssl -lcrypto -lm -lz -fopenmp -lcrypt -ldl

OpenBenchmarking.orgReal C/S, More Is BetterJohn The Ripper 1.7.9-jumbo-7Test: MD5GCC 4.8.0LLVM Clang 3.2LLVM Clang 3.3 SVN7K14K21K28K35KSE +/- 31.75, N = 3SE +/- 52.07, N = 3SE +/- 75.88, N = 33399625987285851. (CC) gcc options: -lssl -lcrypto -lm -lz -fopenmp -lcrypt -ldl

BLAKE2

OpenBenchmarking.orgCycles Per Byte, Fewer Is BetterBLAKE2 20121223Phoronix Test Suite v4.4.1GCC 4.7.2GCC 4.8.0LLVM Clang 3.2LLVM Clang 3.3 SVN246810SE +/- 0.03, N = 3SE +/- 0.00, N = 3SE +/- 0.01, N = 3SE +/- 0.05, N = 35.966.166.776.851. (CC) gcc options: -std=gnu99 -O3 -march=native

LAMMPS Molecular Dynamics Simulator

OpenBenchmarking.orgLoop Time, Fewer Is BetterLAMMPS Molecular Dynamics Simulator 1.0Test: Rhodopsin ProteinGCC 4.7.2GCC 4.8.0LLVM Clang 3.2LLVM Clang 3.3 SVN1122334455SE +/- 0.18, N = 3SE +/- 0.14, N = 3SE +/- 0.07, N = 3SE +/- 0.09, N = 349.3648.4649.7141.361. (CXX) g++ options: -lfftw -lmpich

Timed MAFFT Alignment

OpenBenchmarking.orgSeconds, Fewer Is BetterTimed MAFFT Alignment 6.864Multiple Sequence AlignmentGCC 4.7.2GCC 4.8.0LLVM Clang 3.2LLVM Clang 3.3 SVN246810SE +/- 0.09, N = 6SE +/- 0.10, N = 3SE +/- 0.06, N = 3SE +/- 0.13, N = 65.675.726.196.131. (CC) gcc options: -O3 -lm -lpthread

Timed ImageMagick Compilation

OpenBenchmarking.orgSeconds, Fewer Is BetterTimed ImageMagick Compilation 6.8.1-10Time To CompileGCC 4.7.2GCC 4.8.0LLVM Clang 3.2LLVM Clang 3.3 SVN1326395265SE +/- 0.07, N = 3SE +/- 0.12, N = 3SE +/- 0.11, N = 3SE +/- 0.10, N = 358.0559.6725.0324.79

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 4.7.2GCC 4.8.0LLVM Clang 3.2LLVM Clang 3.3 SVN612182430SE +/- 0.01, N = 3SE +/- 0.00, N = 3SE +/- 0.01, N = 3SE +/- 0.02, N = 323.7818.8323.7823.741. (CC) gcc options: -lm -lpthread -O3 -march=native

Primesieve

OpenBenchmarking.orgSeconds, Fewer Is BetterPrimesieve 4.21e12 Prime Number GenerationGCC 4.7.2GCC 4.8.0LLVM Clang 3.2LLVM Clang 3.3 SVN90180270360450SE +/- 0.01, N = 3SE +/- 0.02, N = 3SE +/- 0.04, N = 3SE +/- 0.45, N = 366.6766.7966.57419.76-fopenmp-fopenmp-fopenmp1. (CXX) g++ options: -O2

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 4.7.2GCC 4.8.0LLVM Clang 3.2LLVM Clang 3.3 SVN60120180240300SE +/- 0.33, N = 3SE +/- 0.00, N = 3SE +/- 0.33, N = 3SE +/- 0.33, N = 33232312851. (CXX) g++ options: -fopenmp -O3 -march=native

FLAC Audio Encoding

OpenBenchmarking.orgSeconds, Fewer Is BetterFLAC Audio Encoding 1.2.1WAV To FLACGCC 4.7.2GCC 4.8.0LLVM Clang 3.2LLVM Clang 3.3 SVN246810SE +/- 0.01, N = 5SE +/- 0.01, N = 5SE +/- 0.02, N = 5SE +/- 0.01, N = 56.996.947.987.881. (CXX) g++ options: -O3 -march=native -logg -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 4.7.2GCC 4.8.0LLVM Clang 3.2LLVM Clang 3.3 SVN48121620SE +/- 0.01, N = 5SE +/- 0.01, N = 5SE +/- 0.04, N = 5SE +/- 0.02, N = 517.2317.0017.4116.83

FFmpeg

OpenBenchmarking.orgSeconds, Fewer Is BetterFFmpeg 1.1H.264 HD To NTSC DVGCC 4.7.2GCC 4.8.0LLVM Clang 3.2LLVM Clang 3.3 SVN510152025SE +/- 0.07, N = 3SE +/- 0.18, N = 3SE +/- 0.04, N = 3SE +/- 0.19, N = 319.0619.3519.2419.311. (CC) gcc options: -lavdevice -lavfilter -lavformat -lavcodec -lswresample -lswscale -lavutil -ldl -lasound -lSDL -lm -pthread -lbz2

Minion

OpenBenchmarking.orgSeconds, Fewer Is BetterMinion 0.15Benchmark: GracefulGCC 4.7.2GCC 4.8.0LLVM Clang 3.2LLVM Clang 3.3 SVN1632486480SE +/- 0.37, N = 3SE +/- 0.38, N = 3SE +/- 0.08, N = 3SE +/- 0.35, N = 371.5872.4071.8470.29-lz -lbz2-lz -lbz2-lz -lbz21. (CXX) g++ options: -O3 -fomit-frame-pointer -rdynamic -lboost_iostreams-mt

OpenBenchmarking.orgSeconds, Fewer Is BetterMinion 0.15Benchmark: SolitaireGCC 4.7.2GCC 4.8.0LLVM Clang 3.2LLVM Clang 3.3 SVN306090120150SE +/- 0.76, N = 3SE +/- 0.82, N = 3SE +/- 0.76, N = 3SE +/- 0.68, N = 3107.44103.05108.48114.74-lz -lbz2-lz -lbz2-lz -lbz21. (CXX) g++ options: -O3 -fomit-frame-pointer -rdynamic -lboost_iostreams-mt

OpenBenchmarking.orgSeconds, Fewer Is BetterMinion 0.15Benchmark: QuasigroupGCC 4.7.2GCC 4.8.0LLVM Clang 3.2LLVM Clang 3.3 SVN4080120160200SE +/- 0.19, N = 3SE +/- 0.44, N = 3SE +/- 0.42, N = 3SE +/- 0.55, N = 3157.81153.93156.36159.10-lz -lbz2-lz -lbz2-lz -lbz21. (CXX) g++ options: -O3 -fomit-frame-pointer -rdynamic -lboost_iostreams-mt

N-Queens

This is a test of the OpenMP version of a test that solves the N-queens problem. The board problem size is 18. Learn more via the OpenBenchmarking.org test page.

OpenBenchmarking.orgSeconds, Fewer Is BetterN-Queens 1.0Elapsed TimeGCC 4.7.2GCC 4.8.0LLVM Clang 3.2LLVM Clang 3.3 SVN60120180240300SE +/- 0.02, N = 3SE +/- 0.13, N = 3SE +/- 0.04, N = 3SE +/- 0.05, N = 328.8229.66257.21257.211. (CC) gcc options: -static -fopenmp -O3 -march=native

GCC 4.7.2

Processor: Intel Core i7 990X @ 3.47GHz (12 Cores), Motherboard: MSI X58M (MS-7593) v1.0, Chipset: Intel 5520/5500/X58 + ICH10R, Memory: 12288MB, Disk: 1000GB Western Digital WD1003FBYX-0, Graphics: NVIDIA GeForce 8400 GS 512MB (500/333MHz), Audio: Realtek ALC889, Network: Realtek RTL8111/8168B

OS: Ubuntu 13.04, Kernel: 3.8.0-12-generic (x86_64), Desktop: Unity 6.6.0, Display Server: X Server 1.13.2, Display Driver: NVIDIA 313.26, OpenGL: 3.3.0 NVIDIA 313.26, Compiler: GCC 4.7.2, File-System: ext4, Screen Resolution: 1920x1080

Compiler Notes: --enable-checking=release --enable-languages=c,c++,fortran --enable-lto
Processor Notes: Scaling Governor: ondemand

Testing initiated at 20 March 2013 18:22 by user phoronix.

GCC 4.8.0

Processor: Intel Core i7 990X @ 3.47GHz (12 Cores), Motherboard: MSI X58M (MS-7593) v1.0, Chipset: Intel 5520/5500/X58 + ICH10R, Memory: 12288MB, Disk: 1000GB Western Digital WD1003FBYX-0, Graphics: NVIDIA GeForce 8400 GS 512MB (500/333MHz), Audio: Realtek ALC889, Network: Realtek RTL8111/8168B

OS: Ubuntu 13.04, Kernel: 3.8.0-12-generic (x86_64), Desktop: Unity 6.6.0, Display Server: X Server 1.13.2, Display Driver: NVIDIA 313.26, OpenGL: 3.3.0 NVIDIA 313.26, Compiler: GCC 4.7, File-System: ext4, Screen Resolution: 1920x1080

Compiler Notes: --build=x86_64-linux-gnu --disable-cloog-version-check --disable-ppl-version-check --disable-werror --enable-checking=release --enable-clocale=gnu --enable-cloog-backend=ppl --enable-gnu-unique-object --enable-languages=c,c++,go,fortran,objc,obj-c++ --enable-libstdcxx-debug --enable-libstdcxx-time=yes --enable-multiarch --enable-nls --enable-objc-gc --enable-plugin --enable-shared --enable-threads=posix --host=x86_64-linux-gnu --target=x86_64-linux-gnu --with-abi=m64 --with-arch-32=i686 --with-cloog --with-multilib-list=m32,m64,mx32 --with-tune=generic -v
Processor Notes: Scaling Governor: ondemand
OpenCL Notes: GPU Compute Cores: 8
System Notes: GPU Compute Cores: 8.

Testing initiated at 20 March 2013 16:05 by user phoronix.

LLVM Clang 3.2

Processor: Intel Core i7 990X @ 3.47GHz (12 Cores), Motherboard: MSI X58M (MS-7593) v1.0, Chipset: Intel 5520/5500/X58 + ICH10R, Memory: 12288MB, Disk: 1000GB Western Digital WD1003FBYX-0, Graphics: NVIDIA GeForce 8400 GS 512MB (500/333MHz), Audio: Realtek ALC889, Network: Realtek RTL8111/8168B

OS: Ubuntu 13.04, Kernel: 3.8.0-12-generic (x86_64), Desktop: Unity 6.6.0, Display Server: X Server 1.13.2, Display Driver: NVIDIA 313.26, OpenGL: 3.3.0 NVIDIA 313.26, Compiler: Clang 3.2 + LLVM 3.2svn, File-System: ext4, Screen Resolution: 1920x1080

Compiler Notes: Optimized build; Built Mar 25 2013 (15:48:44); Default target: x86_64-unknown-linux-gnu; Host CPU: corei7
Processor Notes: Scaling Governor: ondemand

Testing initiated at 25 March 2013 16:11 by user phoronix.

LLVM Clang 3.3 SVN

Processor: Intel Core i7 990X @ 3.47GHz (12 Cores), Motherboard: MSI X58M (MS-7593) v1.0, Chipset: Intel 5520/5500/X58 + ICH10R, Memory: 12288MB, Disk: 1000GB Western Digital WD1003FBYX-0, Graphics: NVIDIA GeForce 8400 GS 512MB (500/333MHz), Audio: Realtek ALC889, Network: Realtek RTL8111/8168B

OS: Ubuntu 13.04, Kernel: 3.8.0-12-generic (x86_64), Desktop: Unity 6.6.0, Display Server: X Server 1.13.2, Display Driver: NVIDIA 313.26, OpenGL: 3.3.0 NVIDIA 313.26, Compiler: Clang 3.3 (SVN 177878) + LLVM 3.3svn, File-System: ext4, Screen Resolution: 1920x1080

Compiler Notes: Optimized build; Built Mar 25 2013 (12:54:43); Default target: x86_64-unknown-linux-gnu; Host CPU: corei7
Processor Notes: Scaling Governor: ondemand

Testing initiated at 25 March 2013 13:37 by user phoronix.