LLVM 3.4 vs. GCC 4.9 Compiler Benchmarks

Tests by Michael Larabel for a future article on Phoronix.com looking at the LLVM Clang 3.4 open-source compiler performance from Ubuntu Linux then compared to GCC 4.8 and GCC 4.9.

Compare your own system(s) to this result file with the Phoronix Test Suite by running the command: phoronix-test-suite benchmark 1312111-SO-GCC49LLVM96
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Audio Encoding 2 Tests
Bioinformatics 2 Tests
Timed Code Compilation 2 Tests
C/C++ Compiler Tests 11 Tests
Compression Tests 2 Tests
CPU Massive 13 Tests
Creator Workloads 4 Tests
Cryptography 2 Tests
Encoding 3 Tests
HPC - High Performance Computing 2 Tests
Multi-Core 7 Tests
Programmer / Developer System Benchmarks 2 Tests
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LLVM Clang 3.3
December 11 2013
 
LLVM Clang 3.4 SVN
December 11 2013
 
GCC 4.8.2
December 11 2013
 
GCC 4.9.0 20131208
December 11 2013
 
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LLVM Clang 3.3

Processor: Intel Core i7-4960X @ 4.00GHz (12 Cores), Motherboard: MSI X79MA-GD45 (MS-7738) v1.0, Chipset: Intel Xeon E5 v2/Core, Memory: 8192MB, Disk: 1000GB Seagate ST1000DX001-1CM1, Graphics: Sapphire AMD Radeon HD 4870 512MB, Audio: Realtek ALC892, Monitor: DELL S2409W, Network: Realtek RTL8111/8168/8411

OS: Ubuntu 14.04, Kernel: 3.13.0-999-generic (x86_64), Desktop: Unity 7.1.2, Display Server: X Server 1.14.4, Display Driver: radeon 7.2.0, OpenGL: 3.1 Mesa 10.0.0 Gallium 0.4, Compiler: Clang 3.3 + LLVM 3.3, File-System: ext4, Screen Resolution: 1920x1080

Compiler Notes: Optimized build; Built Dec 11 2013 (09:55:18); Default target: x86_64-unknown-linux-gnu; Host CPU: x86-64
Processor Notes: Scaling Governor: intel_pstate powersave

LLVM Clang 3.4 SVN

OS: Ubuntu 14.04, Kernel: 3.13.0-999-generic (x86_64), Desktop: Unity 7.1.2, Display Server: X Server 1.14.4, Display Driver: radeon 7.2.0, OpenGL: 3.1 Mesa 10.0.0 Gallium 0.4, Compiler: Clang 3.4 (SVN 197046) + LLVM 3.4, File-System: ext4, Screen Resolution: 1920x1080

Compiler Notes: Optimized build; Built Dec 11 2013 (10:19:57); Default target: x86_64-unknown-linux-gnu; Host CPU: core-avx-i
Processor Notes: Scaling Governor: intel_pstate powersave

GCC 4.8.2

OS: Ubuntu 14.04, Kernel: 3.13.0-999-generic (x86_64), Desktop: Unity 7.1.2, Display Server: X Server 1.14.4, Display Driver: radeon 7.2.0, OpenGL: 3.1 Mesa 10.0.0 Gallium 0.4, Compiler: GCC 4.8.2, File-System: ext4, Screen Resolution: 1920x1080

Compiler Notes: --enable-checking=release --enable-languages=c,c++
Processor Notes: Scaling Governor: intel_pstate powersave

GCC 4.9.0 20131208

OS: Ubuntu 14.04, Kernel: 3.13.0-999-generic (x86_64), Desktop: Unity 7.1.2, Display Server: X Server 1.14.4, Display Driver: radeon 7.2.0, OpenGL: 3.1 Mesa 10.0.0 Gallium 0.4, Compiler: GCC 4.9.0 20131208, File-System: ext4, Screen Resolution: 1920x1080

LLVM 3.4 vs. GCC 4.9 Compiler BenchmarksOpenBenchmarking.orgPhoronix Test SuiteIntel Core i7-4960X @ 4.00GHz (12 Cores)MSI X79MA-GD45 (MS-7738) v1.0Intel Xeon E5 v2/Core8192MB1000GB Seagate ST1000DX001-1CM1Sapphire AMD Radeon HD 4870 512MBRealtek ALC892DELL S2409WRealtek RTL8111/8168/8411Ubuntu 14.043.13.0-999-generic (x86_64)Unity 7.1.2X Server 1.14.4radeon 7.2.03.1 Mesa 10.0.0 Gallium 0.4Clang 3.3 + LLVM 3.3Clang 3.4 (SVN 197046) + LLVM 3.4GCC 4.8.2GCC 4.9.0 20131208ext41920x1080ProcessorMotherboardChipsetMemoryDiskGraphicsAudioMonitorNetworkOSKernelDesktopDisplay ServerDisplay DriverOpenGLCompilersFile-SystemScreen ResolutionLLVM 3.4 Vs. GCC 4.9 Compiler Benchmarks PerformanceSystem Logs- LLVM Clang 3.3: Optimized build; Built Dec 11 2013 (09:55:18); Default target: x86_64-unknown-linux-gnu; Host CPU: x86-64 - LLVM Clang 3.4 SVN: Optimized build; Built Dec 11 2013 (10:19:57); Default target: x86_64-unknown-linux-gnu; Host CPU: core-avx-i - GCC 4.8.2: --enable-checking=release --enable-languages=c,c++- GCC 4.9.0 20131208: --enable-checking=release --enable-languages=c,c++- Scaling Governor: intel_pstate powersave

LLVM Clang 3.3LLVM Clang 3.4 SVNGCC 4.8.2GCC 4.9.0 20131208Result OverviewPhoronix Test Suite100%115%130%145%160%Timed PHP CompilationBLAKE2FLAC Audio EncodingHierarchical INTegrationSciMarkNGINX BenchmarkHimeno BenchmarkC-RayLAME MP3 Encoding7-Zip CompressionFFmpegApache BenchmarkTimed HMMer Search

LLVM 3.4 vs. GCC 4.9 Compiler Benchmarkshmmer: Pfam Database Searchblake2: Phoronix Test Suite v4.8.6botan: Tigerbotan: KASUMIbotan: AES-256botan: Twofishbotan: CAST-256botan: X9.19-MACscimark2: Compositescimark2: Monte Carloscimark2: Fast Fourier Transformscimark2: Sparse Matrix Multiplyscimark2: Dense LU Matrix Factorizationscimark2: Jacobi Successive Over-Relaxationhimeno: Poisson Pressure Solvercompress-7zip: Compress Speed Testbuild-mplayer: Time To Compilebuild-php: Time To Compilec-ray: Total Timecompress-pbzip2: 256MB File Compressionencode-flac: WAV To FLACencode-mp3: WAV To MP3ffmpeg: H.264 HD To NTSC DVhint: FLOAThint: DOUBLEnginx: Static Web Page Servingapache: Static Web Page Servingn-queens: Elapsed TimeLLVM Clang 3.3LLVM Clang 3.4 SVNGCC 4.8.2GCC 4.9.0 201312088.717.58433.5567.70192.16195.64114.2083.841531.29632.55339.212469.342489.311726.031671.603076115.2619.545.705.6512.8611.30277549891.07599037509.4318991.8914690.908.705.10431.7752.21202.80200.82110.7179.861986.97637.24344.332779.394449.091724.821713.47309773.1613.5019.945.714.8411.7911.42230228636.05588678410.6518974.4514606.918.735.30431.6876.59150.44200.7496.5686.571389.41577.28347.122315.772501.011205.851714.842934431.6220.8117.494.815.2912.7511.35337303850.89679836110.1818948.0714621.8824.998.705.321390.53572.28347.832317.412506.891208.222080.932954433.0721.5317.424.1112.5511.28340096979.25689565776.5914991.6914553.3024.58OpenBenchmarking.org

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 SearchLLVM Clang 3.3LLVM Clang 3.4 SVNGCC 4.8.2GCC 4.9.0 20131208246810SE +/- 0.01, N = 3SE +/- 0.01, N = 3SE +/- 0.01, N = 3SE +/- 0.01, N = 38.718.708.738.701. (CC) gcc options: -O3 -march=native -pthread -lhmmer -lsquid -lm
OpenBenchmarking.orgSeconds, Fewer Is BetterTimed HMMer Search 2.3.2Pfam Database SearchLLVM Clang 3.3LLVM Clang 3.4 SVNGCC 4.8.2GCC 4.9.0 201312083691215Min: 8.69 / Avg: 8.71 / Max: 8.72Min: 8.68 / Avg: 8.7 / Max: 8.71Min: 8.71 / Avg: 8.73 / Max: 8.73Min: 8.69 / Avg: 8.7 / Max: 8.731. (CC) gcc options: -O3 -march=native -pthread -lhmmer -lsquid -lm

BLAKE2

OpenBenchmarking.orgCycles Per Byte, Fewer Is BetterBLAKE2 20121223Phoronix Test Suite v4.8.6LLVM Clang 3.3LLVM Clang 3.4 SVNGCC 4.8.2GCC 4.9.0 20131208246810SE +/- 0.01, N = 3SE +/- 0.08, N = 6SE +/- 0.00, N = 3SE +/- 0.00, N = 37.585.105.305.321. (CC) gcc options: -std=gnu99 -O3 -march=native -lcrypto -lz
OpenBenchmarking.orgCycles Per Byte, Fewer Is BetterBLAKE2 20121223Phoronix Test Suite v4.8.6LLVM Clang 3.3LLVM Clang 3.4 SVNGCC 4.8.2GCC 4.9.0 201312083691215Min: 7.56 / Avg: 7.58 / Max: 7.59Min: 4.83 / Avg: 5.1 / Max: 5.27Min: 5.3 / Avg: 5.3 / Max: 5.3Min: 5.32 / Avg: 5.32 / Max: 5.331. (CC) gcc options: -std=gnu99 -O3 -march=native -lcrypto -lz

Botan

OpenBenchmarking.orgMbytes/s, More Is BetterBotan 1.10.3Test: TigerLLVM Clang 3.3LLVM Clang 3.4 SVNGCC 4.8.290180270360450433.55431.77431.681. (CXX) g++ options: -m64 -ldl -lpthread -lrt -O2

OpenBenchmarking.orgMbytes/s, More Is BetterBotan 1.10.3Test: KASUMILLVM Clang 3.3LLVM Clang 3.4 SVNGCC 4.8.22040608010067.7052.2176.591. (CXX) g++ options: -m64 -ldl -lpthread -lrt -O2

OpenBenchmarking.orgMbytes/s, More Is BetterBotan 1.10.3Test: AES-256LLVM Clang 3.3LLVM Clang 3.4 SVNGCC 4.8.24080120160200192.16202.80150.441. (CXX) g++ options: -m64 -ldl -lpthread -lrt -O2

OpenBenchmarking.orgMbytes/s, More Is BetterBotan 1.10.3Test: TwofishLLVM Clang 3.3LLVM Clang 3.4 SVNGCC 4.8.24080120160200195.64200.82200.741. (CXX) g++ options: -m64 -ldl -lpthread -lrt -O2

OpenBenchmarking.orgMbytes/s, More Is BetterBotan 1.10.3Test: CAST-256LLVM Clang 3.3LLVM Clang 3.4 SVNGCC 4.8.2306090120150114.20110.7196.561. (CXX) g++ options: -m64 -ldl -lpthread -lrt -O2

OpenBenchmarking.orgMbytes/s, More Is BetterBotan 1.10.3Test: X9.19-MACLLVM Clang 3.3LLVM Clang 3.4 SVNGCC 4.8.22040608010083.8479.8686.571. (CXX) g++ options: -m64 -ldl -lpthread -lrt -O2

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: CompositeLLVM Clang 3.3LLVM Clang 3.4 SVNGCC 4.8.2GCC 4.9.0 20131208400800120016002000SE +/- 1.54, N = 4SE +/- 1.51, N = 4SE +/- 1.82, N = 4SE +/- 1.83, N = 41531.291986.971389.411390.531. (CXX) g++ options: -O3 -march=native
OpenBenchmarking.orgMflops, More Is BetterSciMark 2.0Computational Test: CompositeLLVM Clang 3.3LLVM Clang 3.4 SVNGCC 4.8.2GCC 4.9.0 2013120830060090012001500Min: 1526.84 / Avg: 1531.29 / Max: 1533.75Min: 1984.3 / Avg: 1986.97 / Max: 1990.91Min: 1385.44 / Avg: 1389.41 / Max: 1393.43Min: 1385.45 / Avg: 1390.53 / Max: 1393.761. (CXX) g++ options: -O3 -march=native

OpenBenchmarking.orgMflops, More Is BetterSciMark 2.0Computational Test: Monte CarloLLVM Clang 3.3LLVM Clang 3.4 SVNGCC 4.8.2GCC 4.9.0 20131208140280420560700SE +/- 0.54, N = 4SE +/- 0.00, N = 4SE +/- 0.00, N = 4SE +/- 0.73, N = 4632.55637.24577.28572.281. (CXX) g++ options: -O3 -march=native
OpenBenchmarking.orgMflops, More Is BetterSciMark 2.0Computational Test: Monte CarloLLVM Clang 3.3LLVM Clang 3.4 SVNGCC 4.8.2GCC 4.9.0 20131208110220330440550Min: 631.61 / Avg: 632.55 / Max: 633.48Min: 637.24 / Avg: 637.24 / Max: 637.24Min: 577.28 / Avg: 577.28 / Max: 577.28Min: 571.14 / Avg: 572.28 / Max: 574.191. (CXX) g++ options: -O3 -march=native

OpenBenchmarking.orgMflops, More Is BetterSciMark 2.0Computational Test: Fast Fourier TransformLLVM Clang 3.3LLVM Clang 3.4 SVNGCC 4.8.2GCC 4.9.0 2013120880160240320400SE +/- 0.64, N = 4SE +/- 0.40, N = 4SE +/- 0.41, N = 4SE +/- 0.82, N = 4339.21344.33347.12347.831. (CXX) g++ options: -O3 -march=native
OpenBenchmarking.orgMflops, More Is BetterSciMark 2.0Computational Test: Fast Fourier TransformLLVM Clang 3.3LLVM Clang 3.4 SVNGCC 4.8.2GCC 4.9.0 2013120860120180240300Min: 338.2 / Avg: 339.21 / Max: 340.89Min: 343.63 / Avg: 344.33 / Max: 345.02Min: 346.41 / Avg: 347.12 / Max: 347.82Min: 346.41 / Avg: 347.83 / Max: 349.241. (CXX) g++ options: -O3 -march=native

OpenBenchmarking.orgMflops, More Is BetterSciMark 2.0Computational Test: Sparse Matrix MultiplyLLVM Clang 3.3LLVM Clang 3.4 SVNGCC 4.8.2GCC 4.9.0 201312086001200180024003000SE +/- 3.56, N = 4SE +/- 8.97, N = 4SE +/- 3.13, N = 4SE +/- 3.27, N = 42469.342779.392315.772317.411. (CXX) g++ options: -O3 -march=native
OpenBenchmarking.orgMflops, More Is BetterSciMark 2.0Computational Test: Sparse Matrix MultiplyLLVM Clang 3.3LLVM Clang 3.4 SVNGCC 4.8.2GCC 4.9.0 201312085001000150020002500Min: 2460.06 / Avg: 2469.34 / Max: 2474.92Min: 2767.57 / Avg: 2779.39 / Max: 2805.48Min: 2307.61 / Avg: 2315.77 / Max: 2320.68Min: 2307.61 / Avg: 2317.41 / Max: 2320.681. (CXX) g++ options: -O3 -march=native

OpenBenchmarking.orgMflops, More Is BetterSciMark 2.0Computational Test: Dense LU Matrix FactorizationLLVM Clang 3.3LLVM Clang 3.4 SVNGCC 4.8.2GCC 4.9.0 2013120810002000300040005000SE +/- 2.90, N = 4SE +/- 4.65, N = 4SE +/- 5.62, N = 4SE +/- 5.63, N = 42489.314449.092501.012506.891. (CXX) g++ options: -O3 -march=native
OpenBenchmarking.orgMflops, More Is BetterSciMark 2.0Computational Test: Dense LU Matrix FactorizationLLVM Clang 3.3LLVM Clang 3.4 SVNGCC 4.8.2GCC 4.9.0 201312088001600240032004000Min: 2480.62 / Avg: 2489.31 / Max: 2492.21Min: 4444.44 / Avg: 4449.09 / Max: 4463.04Min: 2492.21 / Avg: 2501.01 / Max: 2515.72Min: 2492.21 / Avg: 2506.89 / Max: 2515.721. (CXX) g++ options: -O3 -march=native

OpenBenchmarking.orgMflops, More Is BetterSciMark 2.0Computational Test: Jacobi Successive Over-RelaxationLLVM Clang 3.3LLVM Clang 3.4 SVNGCC 4.8.2GCC 4.9.0 20131208400800120016002000SE +/- 1.21, N = 4SE +/- 1.40, N = 4SE +/- 1.18, N = 4SE +/- 1.19, N = 41726.031724.821205.851208.221. (CXX) g++ options: -O3 -march=native
OpenBenchmarking.orgMflops, More Is BetterSciMark 2.0Computational Test: Jacobi Successive Over-RelaxationLLVM Clang 3.3LLVM Clang 3.4 SVNGCC 4.8.2GCC 4.9.0 2013120830060090012001500Min: 1722.39 / Avg: 1726.03 / Max: 1727.24Min: 1722.39 / Avg: 1724.82 / Max: 1727.24Min: 1202.3 / Avg: 1205.85 / Max: 1207.03Min: 1207.03 / Avg: 1208.22 / Max: 1211.81. (CXX) g++ options: -O3 -march=native

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 SolverLLVM Clang 3.3LLVM Clang 3.4 SVNGCC 4.8.2GCC 4.9.0 20131208400800120016002000SE +/- 0.38, N = 3SE +/- 1.44, N = 3SE +/- 1.86, N = 3SE +/- 1.15, N = 31671.601713.471714.842080.931. (CC) gcc options: -O3 -march=native
OpenBenchmarking.orgMFLOPS, More Is BetterHimeno Benchmark 3.0Poisson Pressure SolverLLVM Clang 3.3LLVM Clang 3.4 SVNGCC 4.8.2GCC 4.9.0 20131208400800120016002000Min: 1670.89 / Avg: 1671.6 / Max: 1672.17Min: 1711.79 / Avg: 1713.47 / Max: 1716.34Min: 1712.32 / Avg: 1714.84 / Max: 1718.47Min: 2078.66 / Avg: 2080.93 / Max: 2082.31. (CC) gcc options: -O3 -march=native

7-Zip Compression

OpenBenchmarking.orgMIPS, More Is Better7-Zip Compression 9.20.1Compress Speed TestLLVM Clang 3.3LLVM Clang 3.4 SVNGCC 4.8.2GCC 4.9.0 201312087K14K21K28K35KSE +/- 116.34, N = 3SE +/- 263.12, N = 3SE +/- 50.86, N = 3SE +/- 193.19, N = 3307613097729344295441. (CXX) g++ options: -pipe -lpthread
OpenBenchmarking.orgMIPS, More Is Better7-Zip Compression 9.20.1Compress Speed TestLLVM Clang 3.3LLVM Clang 3.4 SVNGCC 4.8.2GCC 4.9.0 201312085K10K15K20K25KMin: 30560 / Avg: 30761 / Max: 30963Min: 30530 / Avg: 30977 / Max: 31441Min: 29245 / Avg: 29344.33 / Max: 29413Min: 29185 / Avg: 29544.33 / Max: 298471. (CXX) g++ options: -pipe -lpthread

Timed MPlayer Compilation

This test times how long it takes to build the MPlayer media player program. Learn more via the OpenBenchmarking.org test page.

OpenBenchmarking.orgSeconds, Fewer Is BetterTimed MPlayer Compilation 1.0-rc3Time To CompileLLVM Clang 3.4 SVNGCC 4.8.2GCC 4.9.0 20131208816243240SE +/- 0.05, N = 4SE +/- 0.19, N = 3SE +/- 0.24, N = 33.1631.6233.07
OpenBenchmarking.orgSeconds, Fewer Is BetterTimed MPlayer Compilation 1.0-rc3Time To CompileLLVM Clang 3.4 SVNGCC 4.8.2GCC 4.9.0 20131208714212835Min: 3.03 / Avg: 3.16 / Max: 3.29Min: 31.26 / Avg: 31.62 / Max: 31.91Min: 32.61 / Avg: 33.07 / Max: 33.43

Timed PHP Compilation

OpenBenchmarking.orgSeconds, Fewer Is BetterTimed PHP Compilation 5.2.9Time To CompileLLVM Clang 3.3LLVM Clang 3.4 SVNGCC 4.8.2GCC 4.9.0 20131208510152025SE +/- 0.37, N = 6SE +/- 0.34, N = 6SE +/- 0.05, N = 3SE +/- 0.01, N = 315.2613.5020.8121.531. (CC) gcc options: -O3 -march=native -pedantic -ldl -lz -lm
OpenBenchmarking.orgSeconds, Fewer Is BetterTimed PHP Compilation 5.2.9Time To CompileLLVM Clang 3.3LLVM Clang 3.4 SVNGCC 4.8.2GCC 4.9.0 20131208510152025Min: 14.63 / Avg: 15.26 / Max: 16.41Min: 12.89 / Avg: 13.5 / Max: 14.69Min: 20.71 / Avg: 20.81 / Max: 20.86Min: 21.52 / Avg: 21.53 / Max: 21.561. (CC) gcc options: -O3 -march=native -pedantic -ldl -lz -lm

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 TimeLLVM Clang 3.3LLVM Clang 3.4 SVNGCC 4.8.2GCC 4.9.0 20131208510152025SE +/- 0.00, N = 3SE +/- 0.01, N = 3SE +/- 0.01, N = 3SE +/- 0.01, N = 319.5419.9417.4917.421. (CC) gcc options: -lm -lpthread -O3 -march=native
OpenBenchmarking.orgSeconds, Fewer Is BetterC-Ray 1.1Total TimeLLVM Clang 3.3LLVM Clang 3.4 SVNGCC 4.8.2GCC 4.9.0 20131208510152025Min: 19.53 / Avg: 19.54 / Max: 19.54Min: 19.92 / Avg: 19.94 / Max: 19.96Min: 17.48 / Avg: 17.49 / Max: 17.51Min: 17.4 / Avg: 17.42 / Max: 17.441. (CC) gcc options: -lm -lpthread -O3 -march=native

Parallel BZIP2 Compression

OpenBenchmarking.orgSeconds, Fewer Is BetterParallel BZIP2 Compression 1.1.6256MB File CompressionLLVM Clang 3.3LLVM Clang 3.4 SVNGCC 4.8.21.28482.56963.85445.13926.424SE +/- 0.02, N = 3SE +/- 0.02, N = 3SE +/- 0.04, N = 35.705.714.811. (CXX) g++ options: -O2 -pthread -lbz2 -lpthread
OpenBenchmarking.orgSeconds, Fewer Is BetterParallel BZIP2 Compression 1.1.6256MB File CompressionLLVM Clang 3.3LLVM Clang 3.4 SVNGCC 4.8.2246810Min: 5.66 / Avg: 5.7 / Max: 5.72Min: 5.68 / Avg: 5.71 / Max: 5.73Min: 4.74 / Avg: 4.81 / Max: 4.891. (CXX) g++ options: -O2 -pthread -lbz2 -lpthread

FLAC Audio Encoding

OpenBenchmarking.orgSeconds, Fewer Is BetterFLAC Audio Encoding 1.3.0WAV To FLACLLVM Clang 3.3LLVM Clang 3.4 SVNGCC 4.8.2GCC 4.9.0 201312081.27132.54263.81395.08526.3565SE +/- 0.00, N = 5SE +/- 0.00, N = 5SE +/- 0.00, N = 5SE +/- 0.00, N = 55.654.845.294.111. (CXX) g++ options: -O3 -march=native -fvisibility=hidden -logg -lm
OpenBenchmarking.orgSeconds, Fewer Is BetterFLAC Audio Encoding 1.3.0WAV To FLACLLVM Clang 3.3LLVM Clang 3.4 SVNGCC 4.8.2GCC 4.9.0 20131208246810Min: 5.65 / Avg: 5.65 / Max: 5.66Min: 4.84 / Avg: 4.84 / Max: 4.85Min: 5.29 / Avg: 5.29 / Max: 5.29Min: 4.11 / Avg: 4.11 / Max: 4.131. (CXX) g++ options: -O3 -march=native -fvisibility=hidden -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 MP3LLVM Clang 3.3LLVM Clang 3.4 SVNGCC 4.8.2GCC 4.9.0 201312083691215SE +/- 0.01, N = 5SE +/- 0.02, N = 5SE +/- 0.00, N = 5SE +/- 0.01, N = 512.8611.7912.7512.551. (CC) gcc options: -pipe -O3 -march=native -lm
OpenBenchmarking.orgSeconds, Fewer Is BetterLAME MP3 Encoding 3.99.3WAV To MP3LLVM Clang 3.3LLVM Clang 3.4 SVNGCC 4.8.2GCC 4.9.0 2013120848121620Min: 12.84 / Avg: 12.86 / Max: 12.88Min: 11.76 / Avg: 11.79 / Max: 11.88Min: 12.74 / Avg: 12.75 / Max: 12.75Min: 12.53 / Avg: 12.55 / Max: 12.581. (CC) gcc options: -pipe -O3 -march=native -lm

FFmpeg

OpenBenchmarking.orgSeconds, Fewer Is BetterFFmpeg 2.0H.264 HD To NTSC DVLLVM Clang 3.3LLVM Clang 3.4 SVNGCC 4.8.2GCC 4.9.0 201312083691215SE +/- 0.07, N = 3SE +/- 0.22, N = 3SE +/- 0.05, N = 3SE +/- 0.19, N = 311.3011.4211.3511.28-Qunused-arguments-Qunused-arguments-fno-tree-vectorize -MF -MT-fno-tree-vectorize -MF -MT1. (CC) gcc options: -lavdevice -lavfilter -lavformat -lavcodec -lswresample -lswscale -lavutil -ldl -lasound -lSDL -lm -pthread -O3 -march=native -std=c99 -fomit-frame-pointer -fno-math-errno -fno-signed-zeros -MMD
OpenBenchmarking.orgSeconds, Fewer Is BetterFFmpeg 2.0H.264 HD To NTSC DVLLVM Clang 3.3LLVM Clang 3.4 SVNGCC 4.8.2GCC 4.9.0 201312083691215Min: 11.16 / Avg: 11.3 / Max: 11.39Min: 11.12 / Avg: 11.42 / Max: 11.84Min: 11.29 / Avg: 11.35 / Max: 11.44Min: 11.05 / Avg: 11.28 / Max: 11.651. (CC) gcc options: -lavdevice -lavfilter -lavformat -lavcodec -lswresample -lswscale -lavutil -ldl -lasound -lSDL -lm -pthread -O3 -march=native -std=c99 -fomit-frame-pointer -fno-math-errno -fno-signed-zeros -MMD

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: FLOATLLVM Clang 3.3LLVM Clang 3.4 SVNGCC 4.8.2GCC 4.9.0 2013120870M140M210M280M350MSE +/- 426397.20, N = 3SE +/- 87866.73, N = 3SE +/- 429948.29, N = 3SE +/- 253360.03, N = 3277549891.07230228636.05337303850.89340096979.251. (CC) gcc options: -O3 -march=native -lm
OpenBenchmarking.orgQUIPs, More Is BetterHierarchical INTegration 1.0Test: FLOATLLVM Clang 3.3LLVM Clang 3.4 SVNGCC 4.8.2GCC 4.9.0 2013120860M120M180M240M300MMin: 276848245.97 / Avg: 277549891.07 / Max: 278320492.54Min: 230129848.26 / Avg: 230228636.05 / Max: 230403896.61Min: 336585402.44 / Avg: 337303850.89 / Max: 338072270.02Min: 339591237.78 / Avg: 340096979.25 / Max: 340377109.531. (CC) gcc options: -O3 -march=native -lm

OpenBenchmarking.orgQUIPs, More Is BetterHierarchical INTegration 1.0Test: DOUBLELLVM Clang 3.3LLVM Clang 3.4 SVNGCC 4.8.2GCC 4.9.0 20131208150M300M450M600M750MSE +/- 497267.91, N = 3SE +/- 1339446.23, N = 3SE +/- 839463.16, N = 3SE +/- 1772118.95, N = 3599037509.43588678410.65679836110.18689565776.591. (CC) gcc options: -O3 -march=native -lm
OpenBenchmarking.orgQUIPs, More Is BetterHierarchical INTegration 1.0Test: DOUBLELLVM Clang 3.3LLVM Clang 3.4 SVNGCC 4.8.2GCC 4.9.0 20131208120M240M360M480M600MMin: 598176714.33 / Avg: 599037509.43 / Max: 599899300.03Min: 587204125.33 / Avg: 588678410.65 / Max: 591352615.69Min: 678180150.53 / Avg: 679836110.18 / Max: 680903763.56Min: 686163270.09 / Avg: 689565776.59 / Max: 692126348.671. (CC) gcc options: -O3 -march=native -lm

NGINX Benchmark

OpenBenchmarking.orgRequests Per Second, More Is BetterNGINX Benchmark 1.0.11Static Web Page ServingLLVM Clang 3.3LLVM Clang 3.4 SVNGCC 4.8.2GCC 4.9.0 201312084K8K12K16K20KSE +/- 6.21, N = 3SE +/- 44.62, N = 3SE +/- 49.87, N = 3SE +/- 987.48, N = 618991.8918974.4518948.0714991.691. (CC) gcc options: -lpthread -lcrypt -lcrypto -lz -O3 -march=native
OpenBenchmarking.orgRequests Per Second, More Is BetterNGINX Benchmark 1.0.11Static Web Page ServingLLVM Clang 3.3LLVM Clang 3.4 SVNGCC 4.8.2GCC 4.9.0 201312083K6K9K12K15KMin: 18984.67 / Avg: 18991.89 / Max: 19004.26Min: 18914.95 / Avg: 18974.45 / Max: 19061.81Min: 18863.94 / Avg: 18948.07 / Max: 19036.53Min: 12664.65 / Avg: 14991.69 / Max: 18994.691. (CC) gcc options: -lpthread -lcrypt -lcrypto -lz -O3 -march=native

Apache Benchmark

OpenBenchmarking.orgRequests Per Second, More Is BetterApache Benchmark 2.4.7Static Web Page ServingLLVM Clang 3.3LLVM Clang 3.4 SVNGCC 4.8.2GCC 4.9.0 201312083K6K9K12K15KSE +/- 84.59, N = 3SE +/- 85.10, N = 3SE +/- 22.02, N = 3SE +/- 61.95, N = 314690.9014606.9114621.8814553.301. (CC) gcc options: -shared -fPIC -pthread -O3 -march=native
OpenBenchmarking.orgRequests Per Second, More Is BetterApache Benchmark 2.4.7Static Web Page ServingLLVM Clang 3.3LLVM Clang 3.4 SVNGCC 4.8.2GCC 4.9.0 201312083K6K9K12K15KMin: 14589.95 / Avg: 14690.9 / Max: 14858.95Min: 14437.74 / Avg: 14606.91 / Max: 14707.73Min: 14579.79 / Avg: 14621.88 / Max: 14654.12Min: 14440.89 / Avg: 14553.3 / Max: 14654.631. (CC) gcc options: -shared -fPIC -pthread -O3 -march=native

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 4.8.2GCC 4.9.0 20131208612182430SE +/- 0.00, N = 3SE +/- 0.00, N = 324.9924.581. (CC) gcc options: -static -fopenmp -O3 -march=native
OpenBenchmarking.orgSeconds, Fewer Is BetterN-Queens 1.0Elapsed TimeGCC 4.8.2GCC 4.9.0 20131208612182430Min: 24.99 / Avg: 24.99 / Max: 24.99Min: 24.58 / Avg: 24.58 / Max: 24.581. (CC) gcc options: -static -fopenmp -O3 -march=native

LLVM Clang 3.3

Processor: Intel Core i7-4960X @ 4.00GHz (12 Cores), Motherboard: MSI X79MA-GD45 (MS-7738) v1.0, Chipset: Intel Xeon E5 v2/Core, Memory: 8192MB, Disk: 1000GB Seagate ST1000DX001-1CM1, Graphics: Sapphire AMD Radeon HD 4870 512MB, Audio: Realtek ALC892, Monitor: DELL S2409W, Network: Realtek RTL8111/8168/8411

OS: Ubuntu 14.04, Kernel: 3.13.0-999-generic (x86_64), Desktop: Unity 7.1.2, Display Server: X Server 1.14.4, Display Driver: radeon 7.2.0, OpenGL: 3.1 Mesa 10.0.0 Gallium 0.4, Compiler: Clang 3.3 + LLVM 3.3, File-System: ext4, Screen Resolution: 1920x1080

Compiler Notes: Optimized build; Built Dec 11 2013 (09:55:18); Default target: x86_64-unknown-linux-gnu; Host CPU: x86-64
Processor Notes: Scaling Governor: intel_pstate powersave

Testing initiated at 11 December 2013 12:39 by user phoronix.

LLVM Clang 3.4 SVN

Processor: Intel Core i7-4960X @ 4.00GHz (12 Cores), Motherboard: MSI X79MA-GD45 (MS-7738) v1.0, Chipset: Intel Xeon E5 v2/Core, Memory: 8192MB, Disk: 1000GB Seagate ST1000DX001-1CM1, Graphics: Sapphire AMD Radeon HD 4870 512MB, Audio: Realtek ALC892, Monitor: DELL S2409W, Network: Realtek RTL8111/8168/8411

OS: Ubuntu 14.04, Kernel: 3.13.0-999-generic (x86_64), Desktop: Unity 7.1.2, Display Server: X Server 1.14.4, Display Driver: radeon 7.2.0, OpenGL: 3.1 Mesa 10.0.0 Gallium 0.4, Compiler: Clang 3.4 (SVN 197046) + LLVM 3.4, File-System: ext4, Screen Resolution: 1920x1080

Compiler Notes: Optimized build; Built Dec 11 2013 (10:19:57); Default target: x86_64-unknown-linux-gnu; Host CPU: core-avx-i
Processor Notes: Scaling Governor: intel_pstate powersave

Testing initiated at 11 December 2013 11:27 by user phoronix.

GCC 4.8.2

Processor: Intel Core i7-4960X @ 4.00GHz (12 Cores), Motherboard: MSI X79MA-GD45 (MS-7738) v1.0, Chipset: Intel Xeon E5 v2/Core, Memory: 8192MB, Disk: 1000GB Seagate ST1000DX001-1CM1, Graphics: Sapphire AMD Radeon HD 4870 512MB, Audio: Realtek ALC892, Monitor: DELL S2409W, Network: Realtek RTL8111/8168/8411

OS: Ubuntu 14.04, Kernel: 3.13.0-999-generic (x86_64), Desktop: Unity 7.1.2, Display Server: X Server 1.14.4, Display Driver: radeon 7.2.0, OpenGL: 3.1 Mesa 10.0.0 Gallium 0.4, Compiler: GCC 4.8.2, File-System: ext4, Screen Resolution: 1920x1080

Compiler Notes: --enable-checking=release --enable-languages=c,c++
Processor Notes: Scaling Governor: intel_pstate powersave

Testing initiated at 11 December 2013 17:18 by user phoronix.

GCC 4.9.0 20131208

Processor: Intel Core i7-4960X @ 4.00GHz (12 Cores), Motherboard: MSI X79MA-GD45 (MS-7738) v1.0, Chipset: Intel Xeon E5 v2/Core, Memory: 8192MB, Disk: 1000GB Seagate ST1000DX001-1CM1, Graphics: Sapphire AMD Radeon HD 4870 512MB, Audio: Realtek ALC892, Monitor: DELL S2409W, Network: Realtek RTL8111/8168/8411

OS: Ubuntu 14.04, Kernel: 3.13.0-999-generic (x86_64), Desktop: Unity 7.1.2, Display Server: X Server 1.14.4, Display Driver: radeon 7.2.0, OpenGL: 3.1 Mesa 10.0.0 Gallium 0.4, Compiler: GCC 4.9.0 20131208, File-System: ext4, Screen Resolution: 1920x1080

Compiler Notes: --enable-checking=release --enable-languages=c,c++
Processor Notes: Scaling Governor: intel_pstate powersave

Testing initiated at 11 December 2013 16:02 by user phoronix.