LLVM Clang 3.8 Compiler Tuning

Intel Xeon E5-2687W v3 testing with a MSI X99S SLI PLUS (MS-7885) v1.0 and AMD FirePro V7900 2048MB on Ubuntu 16.04 via the Phoronix Test Suite.

HTML result view exported from: https://openbenchmarking.org/result/1602049-GA-LLVMCLANG61&rdt&grw.

LLVM Clang 3.8 Compiler TuningProcessorMotherboardChipsetMemoryDiskGraphicsAudioMonitorNetworkOSKernelDesktopDisplay ServerDisplay DriverOpenGLCompilerFile-SystemScreen Resolution-O3 -march=native-O0-O1-O2-O3-OzIntel Xeon E5-2687W v3 @ 3.50GHz (20 Cores)MSI X99S SLI PLUS (MS-7885) v1.0Intel Xeon E7 v3/Xeon16384MBPNY CS1211 120GB + 80GB INTEL SSDSCKGW08AMD FirePro V7900 2048MBRealtek ALC892ASUS PB278Intel ConnectionUbuntu 16.044.5.0-040500rc1-generic (x86_64) 20160124Unity 7.4.0X Server 1.17.3radeon 7.6.13.3 Mesa 11.0.8 Gallium 0.4Clang 3.8.0 (SVN 259676) + LLVM 3.8.0ext42560x1440OpenBenchmarking.orgCompiler Details- Optimized build; Built Feb 3 2016 (13:57:10); Default target: x86_64-unknown-linux-gnu; Host CPU: haswellProcessor Details- Scaling Governor: intel_pstate powersave

LLVM Clang 3.8 Compiler Tuningscimark2: Compositescimark2: Monte Carloscimark2: Fast Fourier Transformscimark2: Sparse Matrix Multiplyscimark2: Dense LU Matrix Factorizationscimark2: Jacobi Successive Over-Relaxationhint: FLOATencode-flac: WAV To FLACencode-mp3: WAV To MP3hmmer: Pfam Database Searchhimeno: Poisson Pressure Solverbuild-apache: Time To Compilebuild-php: Time To Compilegraphics-magick: Blurgraphics-magick: Sharpengraphics-magick: HWB Color Spacegraphics-magick: Local Adaptive Thresholdingc-ray: Total Timesmallpt: Global Illumination Renderer; 100 Samplesapache: Static Web Page Servingredis: LPOPredis: SADDredis: LPUSHredis: GETredis: SETpgbench: Buffer Test - Normal Load - Read Writepgbench: Buffer Test - Single Thread - Read Writepgbench: Buffer Test - Heavy Contention - Read Write-O3 -march=native-O0-O1-O2-O3-Oz1918.30235.58362.392613.774901.041478.72268576816.547.1115.2214.801342.9421.8715.931171071508412.781223355.46624901.33587747.73575188.23642443.67580208.845092.20362.585342.151803.18238.14358.282807.964133.951477.57112554681.8257.4437.1012.18284.589.254.246761831827.5823021.42541334.66481943.16456864.10527734.53468101.815007.75284.515176.521807.18237.83357.192776.504187.611476.74266823791.599.1215.6815.991334.4717.838.931161111507016.3023380.23642965.38587106.65585266.59625334.40575054.875049.34348.865209.081802.36234.76363.592798.014137.161478.30322378022.368.6513.9514.021359.0121.2711.821191131508119.811223360.85633016.31599041.21570314.27624757.29579653.254968.10379.005050.831793.50237.63358.052766.534127.101478.19321885788.848.6614.3815.131354.2921.6715.791191131508013.211223283.07642800.77592835.98587392.23649056.62582801.374597.65351.754630.051812.18237.11357.502806.624181.891477.78314508487.4112.2716.8815.091002.2419.229.551131081447119.701323342.16631316.90581864.31589078.56632178.77585438.604736.91357.324911.10OpenBenchmarking.org

SciMark

Computational Test: Composite

OpenBenchmarking.orgMflops, More Is BetterSciMark 2.0Computational Test: Composite-O3 -march=native-O0-O1-O2-O3-Oz400800120016002000SE +/- 9.31, N = 4SE +/- 20.39, N = 4SE +/- 14.83, N = 4SE +/- 11.55, N = 4SE +/- 16.52, N = 4SE +/- 12.05, N = 41918.301803.181807.181802.361793.501812.18-O3 -march=native-O0-O1-O2-O3-Oz1. (CXX) g++ options:

SciMark

Computational Test: Monte Carlo

OpenBenchmarking.orgMflops, More Is BetterSciMark 2.0Computational Test: Monte Carlo-O3 -march=native-O0-O1-O2-O3-Oz50100150200250SE +/- 4.92, N = 4SE +/- 4.62, N = 4SE +/- 5.20, N = 4SE +/- 4.95, N = 4SE +/- 5.13, N = 4SE +/- 5.01, N = 4235.58238.14237.83234.76237.63237.11-O3 -march=native-O0-O1-O2-O3-Oz1. (CXX) g++ options:

SciMark

Computational Test: Fast Fourier Transform

OpenBenchmarking.orgMflops, More Is BetterSciMark 2.0Computational Test: Fast Fourier Transform-O3 -march=native-O0-O1-O2-O3-Oz80160240320400SE +/- 6.39, N = 4SE +/- 5.39, N = 4SE +/- 6.22, N = 4SE +/- 1.41, N = 4SE +/- 6.29, N = 4SE +/- 6.36, N = 4362.39358.28357.19363.59358.05357.50-O3 -march=native-O0-O1-O2-O3-Oz1. (CXX) g++ options:

SciMark

Computational Test: Sparse Matrix Multiply

OpenBenchmarking.orgMflops, More Is BetterSciMark 2.0Computational Test: Sparse Matrix Multiply-O3 -march=native-O0-O1-O2-O3-Oz6001200180024003000SE +/- 44.72, N = 4SE +/- 55.30, N = 4SE +/- 51.42, N = 4SE +/- 47.39, N = 4SE +/- 47.81, N = 4SE +/- 46.34, N = 42613.772807.962776.502798.012766.532806.62-O3 -march=native-O0-O1-O2-O3-Oz1. (CXX) g++ options:

SciMark

Computational Test: Dense LU Matrix Factorization

OpenBenchmarking.orgMflops, More Is BetterSciMark 2.0Computational Test: Dense LU Matrix Factorization-O3 -march=native-O0-O1-O2-O3-Oz11002200330044005500SE +/- 23.42, N = 4SE +/- 72.62, N = 4SE +/- 50.41, N = 4SE +/- 52.48, N = 4SE +/- 42.70, N = 4SE +/- 52.55, N = 44901.044133.954187.614137.164127.104181.89-O3 -march=native-O0-O1-O2-O3-Oz1. (CXX) g++ options:

SciMark

Computational Test: Jacobi Successive Over-Relaxation

OpenBenchmarking.orgMflops, More Is BetterSciMark 2.0Computational Test: Jacobi Successive Over-Relaxation-O3 -march=native-O0-O1-O2-O3-Oz30060090012001500SE +/- 32.04, N = 4SE +/- 31.80, N = 4SE +/- 33.02, N = 4SE +/- 32.10, N = 4SE +/- 32.07, N = 4SE +/- 31.89, N = 41478.721477.571476.741478.301478.191477.78-O3 -march=native-O0-O1-O2-O3-Oz1. (CXX) g++ options:

Hierarchical INTegration

Test: FLOAT

OpenBenchmarking.orgQUIPs, More Is BetterHierarchical INTegration 1.0Test: FLOAT-O3 -march=native-O0-O1-O2-O3-Oz70M140M210M280M350MSE +/- 865143.17, N = 3SE +/- 392885.93, N = 3SE +/- 452959.10, N = 3SE +/- 1309178.89, N = 3SE +/- 328417.31, N = 3SE +/- 1422860.99, N = 3268576816.54112554681.82266823791.59322378022.36321885788.84314508487.41-O3 -march=native-O0-O1-O2-O3-Oz1. (CC) gcc options: -lm

FLAC Audio Encoding

WAV To FLAC

OpenBenchmarking.orgSeconds, Fewer Is BetterFLAC Audio Encoding 1.3.1WAV To FLAC-O3 -march=native-O0-O1-O2-O3-Oz1326395265SE +/- 0.03, N = 5SE +/- 0.15, N = 5SE +/- 0.10, N = 5SE +/- 0.10, N = 5SE +/- 0.11, N = 5SE +/- 0.14, N = 57.1157.449.128.658.6612.27-O3 -march=native-O0-O1-O2-O3-Oz1. (CXX) g++ options: -logg -lm

LAME MP3 Encoding

WAV To MP3

OpenBenchmarking.orgSeconds, Fewer Is BetterLAME MP3 Encoding 3.99.3WAV To MP3-O3 -march=native-O0-O1-O2-O3-Oz918273645SE +/- 0.07, N = 5SE +/- 0.11, N = 5SE +/- 0.19, N = 5SE +/- 0.12, N = 5SE +/- 0.21, N = 5SE +/- 0.23, N = 515.2237.1015.6813.9514.3816.88-O3 -march=native-O0-O1-O2-O3-Oz1. (CC) gcc options: -pipe -lm

Timed HMMer Search

Pfam Database Search

OpenBenchmarking.orgSeconds, Fewer Is BetterTimed HMMer Search 2.3.2Pfam Database Search-O3 -march=native-O0-O1-O2-O3-Oz48121620SE +/- 0.46, N = 6SE +/- 0.05, N = 3SE +/- 0.19, N = 3SE +/- 0.60, N = 6SE +/- 0.29, N = 6SE +/- 0.44, N = 614.8012.1815.9914.0215.1315.09-O3 -march=native-O0-O1-O2-O3-Oz1. (CC) gcc options: -pthread -lhmmer -lsquid -lm

Himeno Benchmark

Poisson Pressure Solver

OpenBenchmarking.orgMFLOPS, More Is BetterHimeno Benchmark 3.0Poisson Pressure Solver-O3 -march=native-O0-O1-O2-O3-Oz30060090012001500SE +/- 0.76, N = 3SE +/- 1.80, N = 3SE +/- 8.91, N = 3SE +/- 6.85, N = 3SE +/- 1.53, N = 3SE +/- 2.77, N = 31342.94284.581334.471359.011354.291002.24-march=native-O0-O1-O2-Oz1. (CC) gcc options: -O3 -mavx2

Timed Apache Compilation

Time To Compile

OpenBenchmarking.orgSeconds, Fewer Is BetterTimed Apache Compilation 2.4.7Time To Compile-O3 -march=native-O0-O1-O2-O3-Oz510152025SE +/- 0.16, N = 3SE +/- 0.12, N = 3SE +/- 0.12, N = 3SE +/- 0.20, N = 3SE +/- 0.13, N = 3SE +/- 0.03, N = 321.879.2517.8321.2721.6719.22

Timed PHP Compilation

Time To Compile

OpenBenchmarking.orgSeconds, Fewer Is BetterTimed PHP Compilation 5.2.9Time To Compile-O3 -march=native-O0-O1-O2-O3-Oz48121620SE +/- 0.06, N = 3SE +/- 0.00, N = 3SE +/- 0.03, N = 3SE +/- 0.04, N = 3SE +/- 0.06, N = 3SE +/- 0.03, N = 315.934.248.9311.8215.799.55-O3 -march=native-O0-O1-O2-O3-Oz1. (CC) gcc options: -pedantic -ldl -lz -lm

GraphicsMagick

Operation: Blur

OpenBenchmarking.orgIterations Per Minute, More Is BetterGraphicsMagick 1.3.19Operation: Blur-O3 -march=native-O0-O1-O2-O3-Oz306090120150SE +/- 0.88, N = 3SE +/- 0.00, N = 3SE +/- 0.00, N = 3SE +/- 0.33, N = 3SE +/- 0.00, N = 3SE +/- 0.00, N = 311767116119119113-O3 -march=native-O0-O1-O2-O3-Oz1. (CC) gcc options: -fopenmp -pthread -ljbig -lwebp -ltiff -ljpeg -lXext -lSM -lICE -lX11 -llzma -lz -lm -lgomp -lpthread

GraphicsMagick

Operation: Sharpen

OpenBenchmarking.orgIterations Per Minute, More Is BetterGraphicsMagick 1.3.19Operation: Sharpen-O3 -march=native-O0-O1-O2-O3-Oz306090120150SE +/- 0.00, N = 3SE +/- 0.00, N = 3SE +/- 0.00, N = 3SE +/- 0.00, N = 3SE +/- 0.00, N = 3SE +/- 0.00, N = 310761111113113108-O3 -march=native-O0-O1-O2-O3-Oz1. (CC) gcc options: -fopenmp -pthread -ljbig -lwebp -ltiff -ljpeg -lXext -lSM -lICE -lX11 -llzma -lz -lm -lgomp -lpthread

GraphicsMagick

Operation: HWB Color Space

OpenBenchmarking.orgIterations Per Minute, More Is BetterGraphicsMagick 1.3.19Operation: HWB Color Space-O3 -march=native-O0-O1-O2-O3-Oz306090120150SE +/- 0.00, N = 3SE +/- 0.33, N = 3SE +/- 0.00, N = 3SE +/- 0.00, N = 3SE +/- 0.00, N = 3SE +/- 0.33, N = 315083150150150144-O3 -march=native-O0-O1-O2-O3-Oz1. (CC) gcc options: -fopenmp -pthread -ljbig -lwebp -ltiff -ljpeg -lXext -lSM -lICE -lX11 -llzma -lz -lm -lgomp -lpthread

GraphicsMagick

Operation: Local Adaptive Thresholding

OpenBenchmarking.orgIterations Per Minute, More Is BetterGraphicsMagick 1.3.19Operation: Local Adaptive Thresholding-O3 -march=native-O0-O1-O2-O3-Oz20406080100SE +/- 0.00, N = 3SE +/- 0.00, N = 3SE +/- 0.00, N = 3SE +/- 0.00, N = 3SE +/- 0.00, N = 3SE +/- 0.00, N = 3841870818071-O3 -march=native-O0-O1-O2-O3-Oz1. (CC) gcc options: -fopenmp -pthread -ljbig -lwebp -ltiff -ljpeg -lXext -lSM -lICE -lX11 -llzma -lz -lm -lgomp -lpthread

C-Ray

Total Time

OpenBenchmarking.orgSeconds, Fewer Is BetterC-Ray 1.1Total Time-O3 -march=native-O0-O1-O2-O3-Oz612182430SE +/- 0.02, N = 3SE +/- 0.02, N = 3SE +/- 0.00, N = 3SE +/- 0.01, N = 3SE +/- 0.01, N = 3SE +/- 0.01, N = 312.7827.5816.3019.8113.2119.70-march=native-O0-O1-O2-Oz1. (CC) gcc options: -lm -lpthread -O3

Smallpt

Global Illumination Renderer; 100 Samples

OpenBenchmarking.orgSeconds, Fewer Is BetterSmallpt 1.0Global Illumination Renderer; 100 Samples-O3 -march=native-O2-O3-Oz3691215SE +/- 0.00, N = 3SE +/- 0.00, N = 3SE +/- 0.00, N = 3SE +/- 0.00, N = 312121213-O3 -march=native-O2-O3-Oz1. (CXX) g++ options: -fopenmp

Apache Benchmark

Static Web Page Serving

OpenBenchmarking.orgRequests Per Second, More Is BetterApache Benchmark 2.4.7Static Web Page Serving-O3 -march=native-O0-O1-O2-O3-Oz5K10K15K20K25KSE +/- 103.00, N = 3SE +/- 50.43, N = 3SE +/- 55.39, N = 3SE +/- 64.64, N = 3SE +/- 43.31, N = 3SE +/- 21.97, N = 323355.4623021.4223380.2323360.8523283.0723342.16-O3 -march=native-O0-O1-O2-O3-Oz1. (CC) gcc options: -shared -fPIC -pthread

Redis

Test: LPOP

OpenBenchmarking.orgRequests Per Second, More Is BetterRedis 3.0.1Test: LPOP-O3 -march=native-O0-O1-O2-O3-Oz140K280K420K560K700KSE +/- 7141.78, N = 3SE +/- 5474.55, N = 3SE +/- 2297.03, N = 3SE +/- 8627.19, N = 3SE +/- 6373.30, N = 3SE +/- 6559.78, N = 3624901.33541334.66642965.38633016.31642800.77631316.901. (CC) gcc options: -ggdb -rdynamic -lm -pthread -ldl

Redis

Test: SADD

OpenBenchmarking.orgRequests Per Second, More Is BetterRedis 3.0.1Test: SADD-O3 -march=native-O0-O1-O2-O3-Oz130K260K390K520K650KSE +/- 7782.07, N = 3SE +/- 4708.54, N = 3SE +/- 6376.53, N = 3SE +/- 6002.71, N = 3SE +/- 4485.63, N = 3SE +/- 8371.51, N = 3587747.73481943.16587106.65599041.21592835.98581864.311. (CC) gcc options: -ggdb -rdynamic -lm -pthread -ldl

Redis

Test: LPUSH

OpenBenchmarking.orgRequests Per Second, More Is BetterRedis 3.0.1Test: LPUSH-O3 -march=native-O0-O1-O2-O3-Oz130K260K390K520K650KSE +/- 8620.97, N = 3SE +/- 7778.94, N = 4SE +/- 8816.15, N = 5SE +/- 7327.04, N = 3SE +/- 9549.58, N = 3SE +/- 10683.69, N = 3575188.23456864.10585266.59570314.27587392.23589078.561. (CC) gcc options: -ggdb -rdynamic -lm -pthread -ldl

Redis

Test: GET

OpenBenchmarking.orgRequests Per Second, More Is BetterRedis 3.0.1Test: GET-O3 -march=native-O0-O1-O2-O3-Oz140K280K420K560K700KSE +/- 10103.06, N = 3SE +/- 2815.08, N = 3SE +/- 9198.37, N = 6SE +/- 6780.00, N = 3SE +/- 11447.92, N = 3SE +/- 12112.33, N = 3642443.67527734.53625334.40624757.29649056.62632178.771. (CC) gcc options: -ggdb -rdynamic -lm -pthread -ldl

Redis

Test: SET

OpenBenchmarking.orgRequests Per Second, More Is BetterRedis 3.0.1Test: SET-O3 -march=native-O0-O1-O2-O3-Oz130K260K390K520K650KSE +/- 9778.12, N = 4SE +/- 8333.77, N = 3SE +/- 9986.25, N = 3SE +/- 8932.93, N = 3SE +/- 8917.10, N = 3SE +/- 4629.62, N = 3580208.84468101.81575054.87579653.25582801.37585438.601. (CC) gcc options: -ggdb -rdynamic -lm -pthread -ldl

PostgreSQL pgbench

Scaling: Buffer Test - Test: Normal Load - Mode: Read Write

OpenBenchmarking.orgTPS, More Is BetterPostgreSQL pgbench 9.4.3Scaling: Buffer Test - Test: Normal Load - Mode: Read Write-O3 -march=native-O0-O1-O2-O3-Oz11002200330044005500SE +/- 139.97, N = 6SE +/- 68.30, N = 3SE +/- 39.17, N = 3SE +/- 90.64, N = 3SE +/- 93.61, N = 6SE +/- 34.48, N = 35092.205007.755049.344968.104597.654736.91-O3 -march=native-O0-O1-O2-O3-Oz1. (CC) gcc options: -fno-strict-aliasing -fwrapv -pthread -pthreads -mthreads -lpgcommon -lpgport -lpq -lpthread -lrt -lcrypt -ldl -lm

PostgreSQL pgbench

Scaling: Buffer Test - Test: Single Thread - Mode: Read Write

OpenBenchmarking.orgTPS, More Is BetterPostgreSQL pgbench 9.4.3Scaling: Buffer Test - Test: Single Thread - Mode: Read Write-O3 -march=native-O0-O1-O2-O3-Oz80160240320400SE +/- 4.92, N = 5SE +/- 4.11, N = 3SE +/- 6.43, N = 6SE +/- 3.72, N = 3SE +/- 6.37, N = 3SE +/- 5.12, N = 5362.58284.51348.86379.00351.75357.32-O3 -march=native-O0-O1-O2-O3-Oz1. (CC) gcc options: -fno-strict-aliasing -fwrapv -pthread -pthreads -mthreads -lpgcommon -lpgport -lpq -lpthread -lrt -lcrypt -ldl -lm

PostgreSQL pgbench

Scaling: Buffer Test - Test: Heavy Contention - Mode: Read Write

OpenBenchmarking.orgTPS, More Is BetterPostgreSQL pgbench 9.4.3Scaling: Buffer Test - Test: Heavy Contention - Mode: Read Write-O3 -march=native-O0-O1-O2-O3-Oz11002200330044005500SE +/- 97.00, N = 6SE +/- 54.54, N = 3SE +/- 22.85, N = 3SE +/- 5.93, N = 3SE +/- 68.69, N = 3SE +/- 79.23, N = 45342.155176.525209.085050.834630.054911.10-O3 -march=native-O0-O1-O2-O3-Oz1. (CC) gcc options: -fno-strict-aliasing -fwrapv -pthread -pthreads -mthreads -lpgcommon -lpgport -lpq -lpthread -lrt -lcrypt -ldl -lm

Phoronix Test Suite v10.8.5