GCC 4.9 Linux LTO Optimizations

Some link-time optimization compiler benchmarks by Michael Larabel for Phoronix.com of GCC 4.8.2 and 4.9.0 RC1. The Link-time optimization results with -flto didn't turn out to be as exciting as anticipated, so here they are for this short future article on phoronix. Benchmarks from an Intel Core i7 Haswell running Ubuntu Linux.

Compare your own system(s) to this result file with the Phoronix Test Suite by running the command: phoronix-test-suite benchmark 1404126-PTS-GCC4849L62
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Audio Encoding 2 Tests
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Timed Code Compilation 3 Tests
C/C++ Compiler Tests 9 Tests
CPU Massive 12 Tests
Creator Workloads 6 Tests
Encoding 3 Tests
Fortran Tests 2 Tests
HPC - High Performance Computing 2 Tests
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Multi-Core 9 Tests
Programmer / Developer System Benchmarks 4 Tests
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GCC 4.8.2 - Stock
April 12 2014
 
GCC 4.8.2 - LTO
April 12 2014
 
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April 12 2014
 
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April 12 2014
 
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GCC 4.9 Linux LTO OptimizationsOpenBenchmarking.orgPhoronix Test SuiteIntel Core i7-4770K @ 3.50GHz (8 Cores)ECS Z87H3-A2X EXTREME v1.0Intel 4th Gen Core DRAM16384MB120GB Samsung SSD 840ECS NVIDIA GeForce GTX 460 768MB (675/1804MHz)Realtek ALC1150Samsung SyncMasterRealtek RTL8111/8168/8411Ubuntu 14.043.13.0-22-generic (x86_64)Unity 7.2.0X Server 1.15.0NVIDIA 337.124.3.0GCC 4.8.2GCC 4.9.0 20140411ext42560x1600ProcessorMotherboardChipsetMemoryDiskGraphicsAudioMonitorNetworkOSKernelDesktopDisplay ServerDisplay DriverOpenGLCompilersFile-SystemScreen ResolutionGCC 4.9 Linux LTO Optimizations PerformanceSystem Logs- --enable-checking=release- Scaling Governor: acpi-cpufreq ondemand

GCC 4.8.2 - StockGCC 4.8.2 - LTOGCC 4.9.0 RC1 - StockGCC 4.9.0 RC1 - LTOResult OverviewPhoronix Test Suite100%166%232%297%363%Timed PHP CompilationTimed ImageMagick CompilationTimed Apache CompilationLAME MP3 EncodingBYTE Unix BenchmarkFFmpegHierarchical INTegrationApache BenchmarkHimeno BenchmarkebizzyC-RayGraphicsMagickHPC Challenge

GCC 4.9 Linux LTO Optimizationshpcc: G-HPLhpcc: G-Fftehpcc: EP-DGEMMhpcc: G-Ptranshpcc: EP-STREAM Triadhpcc: G-Rand Accessbyte: Dhrystone 2graphics-magick: Blurgraphics-magick: Sharpengraphics-magick: Resizinggraphics-magick: HWB Color Spacegraphics-magick: Local Adaptive Thresholdinghimeno: Poisson Pressure Solverbuild-apache: Time To Compilebuild-imagemagick: Time To Compilebuild-php: Time To Compilec-ray: Total Timeebizzy: Records/sopen-porous-media: Upscale-Relpermsmallpt: Global Illumination Renderer; 100 Samplesencode-flac: WAV To FLACencode-mp3: WAV To MP3ffmpeg: H.264 HD To NTSC DVnero2d: Total Timehint: FLOATapache: Static Web Page ServingGCC 4.8.2 - StockGCC 4.8.2 - LTOGCC 4.9.0 RC1 - StockGCC 4.9.0 RC1 - LTO50.054772.119226.576941.265911.088950.0097935908267.37170140198216971810.1027.1460.3526.2716.9842849100.58244.8212.4213.99453.45367476347.0035904.5349.787832.129676.637491.269561.086120.0098034717223.53171141199218971813.5544.37124.5193.2916.9842698100.422413.2413.80458.86367633749.8335521.5150.081172.113386.726111.269041.081750.0098036694838.471661401992141021828.1527.8860.5927.0517.09429503.7010.8713.80373674384.8335953.7349.962302.135556.638341.268501.081260.0098933544122.871651401982131021825.4145.74129.9195.4217.08425653.7210.8813.75371516290.6635817.51OpenBenchmarking.org

HPC Challenge

OpenBenchmarking.orgGFLOPS, More Is BetterHPC Challenge 1.4.3Test / Class: G-HPLGCC 4.8.2 - StockGCC 4.8.2 - LTOGCC 4.9.0 RC1 - StockGCC 4.9.0 RC1 - LTO1122334455SE +/- 0.08, N = 3SE +/- 0.24, N = 3SE +/- 0.05, N = 3SE +/- 0.11, N = 350.0549.7950.0849.96-flto-flto1. (CC) gcc options: -lblas -lm -pthread -lmpi -ldl -lhwloc -fomit-frame-pointer -O3 -march=native -funroll-loops2. BLAS + Open MPI 1.6.5
OpenBenchmarking.orgGFLOPS, More Is BetterHPC Challenge 1.4.3Test / Class: G-HPLGCC 4.8.2 - StockGCC 4.8.2 - LTOGCC 4.9.0 RC1 - StockGCC 4.9.0 RC1 - LTO1020304050Min: 49.89 / Avg: 50.05 / Max: 50.16Min: 49.31 / Avg: 49.79 / Max: 50.03Min: 50.03 / Avg: 50.08 / Max: 50.17Min: 49.77 / Avg: 49.96 / Max: 50.161. (CC) gcc options: -lblas -lm -pthread -lmpi -ldl -lhwloc -fomit-frame-pointer -O3 -march=native -funroll-loops2. BLAS + Open MPI 1.6.5

OpenBenchmarking.orgGFLOPS, More Is BetterHPC Challenge 1.4.3Test / Class: G-FfteGCC 4.8.2 - StockGCC 4.8.2 - LTOGCC 4.9.0 RC1 - StockGCC 4.9.0 RC1 - LTO0.48050.9611.44151.9222.4025SE +/- 0.00495, N = 3SE +/- 0.00327, N = 3SE +/- 0.00571, N = 3SE +/- 0.01396, N = 32.119222.129672.113382.13555-flto-flto1. (CC) gcc options: -lblas -lm -pthread -lmpi -ldl -lhwloc -fomit-frame-pointer -O3 -march=native -funroll-loops2. BLAS + Open MPI 1.6.5
OpenBenchmarking.orgGFLOPS, More Is BetterHPC Challenge 1.4.3Test / Class: G-FfteGCC 4.8.2 - StockGCC 4.8.2 - LTOGCC 4.9.0 RC1 - StockGCC 4.9.0 RC1 - LTO246810Min: 2.11 / Avg: 2.12 / Max: 2.13Min: 2.12 / Avg: 2.13 / Max: 2.13Min: 2.11 / Avg: 2.11 / Max: 2.12Min: 2.12 / Avg: 2.14 / Max: 2.161. (CC) gcc options: -lblas -lm -pthread -lmpi -ldl -lhwloc -fomit-frame-pointer -O3 -march=native -funroll-loops2. BLAS + Open MPI 1.6.5

OpenBenchmarking.orgGFLOPS, More Is BetterHPC Challenge 1.4.3Test / Class: EP-DGEMMGCC 4.8.2 - StockGCC 4.8.2 - LTOGCC 4.9.0 RC1 - StockGCC 4.9.0 RC1 - LTO246810SE +/- 0.04345, N = 3SE +/- 0.05029, N = 3SE +/- 0.05569, N = 3SE +/- 0.06945, N = 36.576946.637496.726116.63834-flto-flto1. (CC) gcc options: -lblas -lm -pthread -lmpi -ldl -lhwloc -fomit-frame-pointer -O3 -march=native -funroll-loops2. BLAS + Open MPI 1.6.5
OpenBenchmarking.orgGFLOPS, More Is BetterHPC Challenge 1.4.3Test / Class: EP-DGEMMGCC 4.8.2 - StockGCC 4.8.2 - LTOGCC 4.9.0 RC1 - StockGCC 4.9.0 RC1 - LTO3691215Min: 6.49 / Avg: 6.58 / Max: 6.62Min: 6.55 / Avg: 6.64 / Max: 6.72Min: 6.62 / Avg: 6.73 / Max: 6.81Min: 6.51 / Avg: 6.64 / Max: 6.741. (CC) gcc options: -lblas -lm -pthread -lmpi -ldl -lhwloc -fomit-frame-pointer -O3 -march=native -funroll-loops2. BLAS + Open MPI 1.6.5

OpenBenchmarking.orgGB/s, More Is BetterHPC Challenge 1.4.3Test / Class: G-PtransGCC 4.8.2 - StockGCC 4.8.2 - LTOGCC 4.9.0 RC1 - StockGCC 4.9.0 RC1 - LTO0.28570.57140.85711.14281.4285SE +/- 0.00051, N = 3SE +/- 0.00112, N = 3SE +/- 0.00329, N = 3SE +/- 0.00220, N = 31.265911.269561.269041.26850-flto-flto1. (CC) gcc options: -lblas -lm -pthread -lmpi -ldl -lhwloc -fomit-frame-pointer -O3 -march=native -funroll-loops2. BLAS + Open MPI 1.6.5
OpenBenchmarking.orgGB/s, More Is BetterHPC Challenge 1.4.3Test / Class: G-PtransGCC 4.8.2 - StockGCC 4.8.2 - LTOGCC 4.9.0 RC1 - StockGCC 4.9.0 RC1 - LTO246810Min: 1.26 / Avg: 1.27 / Max: 1.27Min: 1.27 / Avg: 1.27 / Max: 1.27Min: 1.26 / Avg: 1.27 / Max: 1.27Min: 1.26 / Avg: 1.27 / Max: 1.271. (CC) gcc options: -lblas -lm -pthread -lmpi -ldl -lhwloc -fomit-frame-pointer -O3 -march=native -funroll-loops2. BLAS + Open MPI 1.6.5

OpenBenchmarking.orgGB/s, More Is BetterHPC Challenge 1.4.3Test / Class: EP-STREAM TriadGCC 4.8.2 - StockGCC 4.8.2 - LTOGCC 4.9.0 RC1 - StockGCC 4.9.0 RC1 - LTO0.2450.490.7350.981.225SE +/- 0.00488, N = 3SE +/- 0.00405, N = 3SE +/- 0.00379, N = 3SE +/- 0.00342, N = 31.088951.086121.081751.08126-flto-flto1. (CC) gcc options: -lblas -lm -pthread -lmpi -ldl -lhwloc -fomit-frame-pointer -O3 -march=native -funroll-loops2. BLAS + Open MPI 1.6.5
OpenBenchmarking.orgGB/s, More Is BetterHPC Challenge 1.4.3Test / Class: EP-STREAM TriadGCC 4.8.2 - StockGCC 4.8.2 - LTOGCC 4.9.0 RC1 - StockGCC 4.9.0 RC1 - LTO246810Min: 1.08 / Avg: 1.09 / Max: 1.1Min: 1.08 / Avg: 1.09 / Max: 1.09Min: 1.07 / Avg: 1.08 / Max: 1.09Min: 1.08 / Avg: 1.08 / Max: 1.091. (CC) gcc options: -lblas -lm -pthread -lmpi -ldl -lhwloc -fomit-frame-pointer -O3 -march=native -funroll-loops2. BLAS + Open MPI 1.6.5

OpenBenchmarking.orgGUP/s, More Is BetterHPC Challenge 1.4.3Test / Class: G-Random AccessGCC 4.8.2 - StockGCC 4.8.2 - LTOGCC 4.9.0 RC1 - StockGCC 4.9.0 RC1 - LTO0.00220.00440.00660.00880.011SE +/- 0.00008, N = 3SE +/- 0.00001, N = 3SE +/- 0.00013, N = 3SE +/- 0.00003, N = 30.009790.009800.009800.00989-flto-flto1. (CC) gcc options: -lblas -lm -pthread -lmpi -ldl -lhwloc -fomit-frame-pointer -O3 -march=native -funroll-loops2. BLAS + Open MPI 1.6.5
OpenBenchmarking.orgGUP/s, More Is BetterHPC Challenge 1.4.3Test / Class: G-Random AccessGCC 4.8.2 - StockGCC 4.8.2 - LTOGCC 4.9.0 RC1 - StockGCC 4.9.0 RC1 - LTO12345Min: 0.01 / Avg: 0.01 / Max: 0.01Min: 0.01 / Avg: 0.01 / Max: 0.01Min: 0.01 / Avg: 0.01 / Max: 0.01Min: 0.01 / Avg: 0.01 / Max: 0.011. (CC) gcc options: -lblas -lm -pthread -lmpi -ldl -lhwloc -fomit-frame-pointer -O3 -march=native -funroll-loops2. BLAS + Open MPI 1.6.5

BYTE Unix Benchmark

OpenBenchmarking.orgLPS, More Is BetterBYTE Unix Benchmark 3.6Computational Test: Dhrystone 2GCC 4.8.2 - StockGCC 4.8.2 - LTOGCC 4.9.0 RC1 - StockGCC 4.9.0 RC1 - LTO8M16M24M32M40MSE +/- 13215.25, N = 3SE +/- 9630.07, N = 3SE +/- 165665.98, N = 3SE +/- 32494.09, N = 335908267.3734717223.5336694838.4733544122.87-flto-flto1. (CC) gcc options: -O3 -march=native
OpenBenchmarking.orgLPS, More Is BetterBYTE Unix Benchmark 3.6Computational Test: Dhrystone 2GCC 4.8.2 - StockGCC 4.8.2 - LTOGCC 4.9.0 RC1 - StockGCC 4.9.0 RC1 - LTO6M12M18M24M30MMin: 35883059.9 / Avg: 35908267.37 / Max: 35927753.4Min: 34701462.8 / Avg: 34717223.53 / Max: 34734691.1Min: 36363866.9 / Avg: 36694838.47 / Max: 36873703.9Min: 33480421.8 / Avg: 33544122.87 / Max: 33587119.21. (CC) gcc options: -O3 -march=native

GraphicsMagick

This is a test of GraphicsMagick with its OpenMP implementation that performs various imaging tests to stress the system's CPU. Learn more via the OpenBenchmarking.org test page.

OpenBenchmarking.orgIterations Per Minute, More Is BetterGraphicsMagick 1.3.19Operation: BlurGCC 4.8.2 - StockGCC 4.8.2 - LTOGCC 4.9.0 RC1 - StockGCC 4.9.0 RC1 - LTO4080120160200SE +/- 0.33, N = 3SE +/- 0.33, N = 3SE +/- 0.33, N = 3SE +/- 0.33, N = 3170171166165-flto-flto1. (CC) gcc options: -std=gnu99 -fopenmp -O3 -march=native -pthread -ljbig -lwebp -ljpeg -lXext -lX11 -llzma -lxml2 -lz -lm -lpthread
OpenBenchmarking.orgIterations Per Minute, More Is BetterGraphicsMagick 1.3.19Operation: BlurGCC 4.8.2 - StockGCC 4.8.2 - LTOGCC 4.9.0 RC1 - StockGCC 4.9.0 RC1 - LTO306090120150Min: 169 / Avg: 169.67 / Max: 170Min: 170 / Avg: 170.67 / Max: 171Min: 165 / Avg: 165.67 / Max: 166Min: 165 / Avg: 165.33 / Max: 1661. (CC) gcc options: -std=gnu99 -fopenmp -O3 -march=native -pthread -ljbig -lwebp -ljpeg -lXext -lX11 -llzma -lxml2 -lz -lm -lpthread

OpenBenchmarking.orgIterations Per Minute, More Is BetterGraphicsMagick 1.3.19Operation: SharpenGCC 4.8.2 - StockGCC 4.8.2 - LTOGCC 4.9.0 RC1 - StockGCC 4.9.0 RC1 - LTO306090120150SE +/- 0.33, N = 3SE +/- 0.00, N = 3SE +/- 0.00, N = 3SE +/- 0.00, N = 3140141140140-flto-flto1. (CC) gcc options: -std=gnu99 -fopenmp -O3 -march=native -pthread -ljbig -lwebp -ljpeg -lXext -lX11 -llzma -lxml2 -lz -lm -lpthread
OpenBenchmarking.orgIterations Per Minute, More Is BetterGraphicsMagick 1.3.19Operation: SharpenGCC 4.8.2 - StockGCC 4.8.2 - LTOGCC 4.9.0 RC1 - StockGCC 4.9.0 RC1 - LTO306090120150Min: 140 / Avg: 140.33 / Max: 141Min: 141 / Avg: 141 / Max: 141Min: 140 / Avg: 140 / Max: 140Min: 140 / Avg: 140 / Max: 1401. (CC) gcc options: -std=gnu99 -fopenmp -O3 -march=native -pthread -ljbig -lwebp -ljpeg -lXext -lX11 -llzma -lxml2 -lz -lm -lpthread

OpenBenchmarking.orgIterations Per Minute, More Is BetterGraphicsMagick 1.3.19Operation: ResizingGCC 4.8.2 - StockGCC 4.8.2 - LTOGCC 4.9.0 RC1 - StockGCC 4.9.0 RC1 - LTO4080120160200SE +/- 0.33, N = 3SE +/- 0.00, N = 3SE +/- 0.00, N = 3SE +/- 0.33, N = 3198199199198-flto-flto1. (CC) gcc options: -std=gnu99 -fopenmp -O3 -march=native -pthread -ljbig -lwebp -ljpeg -lXext -lX11 -llzma -lxml2 -lz -lm -lpthread
OpenBenchmarking.orgIterations Per Minute, More Is BetterGraphicsMagick 1.3.19Operation: ResizingGCC 4.8.2 - StockGCC 4.8.2 - LTOGCC 4.9.0 RC1 - StockGCC 4.9.0 RC1 - LTO4080120160200Min: 198 / Avg: 198.33 / Max: 199Min: 199 / Avg: 199 / Max: 199Min: 199 / Avg: 199 / Max: 199Min: 197 / Avg: 197.67 / Max: 1981. (CC) gcc options: -std=gnu99 -fopenmp -O3 -march=native -pthread -ljbig -lwebp -ljpeg -lXext -lX11 -llzma -lxml2 -lz -lm -lpthread

OpenBenchmarking.orgIterations Per Minute, More Is BetterGraphicsMagick 1.3.19Operation: HWB Color SpaceGCC 4.8.2 - StockGCC 4.8.2 - LTOGCC 4.9.0 RC1 - StockGCC 4.9.0 RC1 - LTO50100150200250SE +/- 0.00, N = 3SE +/- 0.00, N = 3SE +/- 0.33, N = 3SE +/- 0.00, N = 3216218214213-flto-flto1. (CC) gcc options: -std=gnu99 -fopenmp -O3 -march=native -pthread -ljbig -lwebp -ljpeg -lXext -lX11 -llzma -lxml2 -lz -lm -lpthread
OpenBenchmarking.orgIterations Per Minute, More Is BetterGraphicsMagick 1.3.19Operation: HWB Color SpaceGCC 4.8.2 - StockGCC 4.8.2 - LTOGCC 4.9.0 RC1 - StockGCC 4.9.0 RC1 - LTO4080120160200Min: 216 / Avg: 216 / Max: 216Min: 218 / Avg: 218 / Max: 218Min: 213 / Avg: 213.67 / Max: 214Min: 213 / Avg: 213 / Max: 2131. (CC) gcc options: -std=gnu99 -fopenmp -O3 -march=native -pthread -ljbig -lwebp -ljpeg -lXext -lX11 -llzma -lxml2 -lz -lm -lpthread

OpenBenchmarking.orgIterations Per Minute, More Is BetterGraphicsMagick 1.3.19Operation: Local Adaptive ThresholdingGCC 4.8.2 - StockGCC 4.8.2 - LTOGCC 4.9.0 RC1 - StockGCC 4.9.0 RC1 - LTO20406080100SE +/- 0.33, N = 3SE +/- 0.00, N = 3SE +/- 0.00, N = 3SE +/- 0.00, N = 39797102102-flto-flto1. (CC) gcc options: -std=gnu99 -fopenmp -O3 -march=native -pthread -ljbig -lwebp -ljpeg -lXext -lX11 -llzma -lxml2 -lz -lm -lpthread
OpenBenchmarking.orgIterations Per Minute, More Is BetterGraphicsMagick 1.3.19Operation: Local Adaptive ThresholdingGCC 4.8.2 - StockGCC 4.8.2 - LTOGCC 4.9.0 RC1 - StockGCC 4.9.0 RC1 - LTO20406080100Min: 96 / Avg: 96.67 / Max: 97Min: 97 / Avg: 97 / Max: 97Min: 102 / Avg: 102 / Max: 102Min: 102 / Avg: 102 / Max: 1021. (CC) gcc options: -std=gnu99 -fopenmp -O3 -march=native -pthread -ljbig -lwebp -ljpeg -lXext -lX11 -llzma -lxml2 -lz -lm -lpthread

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 4.8.2 - StockGCC 4.8.2 - LTOGCC 4.9.0 RC1 - StockGCC 4.9.0 RC1 - LTO400800120016002000SE +/- 3.93, N = 3SE +/- 0.48, N = 3SE +/- 1.31, N = 3SE +/- 0.63, N = 31810.101813.551828.151825.41-flto-flto1. (CC) gcc options: -O3 -march=native
OpenBenchmarking.orgMFLOPS, More Is BetterHimeno Benchmark 3.0Poisson Pressure SolverGCC 4.8.2 - StockGCC 4.8.2 - LTOGCC 4.9.0 RC1 - StockGCC 4.9.0 RC1 - LTO30060090012001500Min: 1802.51 / Avg: 1810.1 / Max: 1815.67Min: 1812.74 / Avg: 1813.55 / Max: 1814.4Min: 1825.63 / Avg: 1828.15 / Max: 1830.01Min: 1824.3 / Avg: 1825.41 / Max: 1826.491. (CC) gcc options: -O3 -march=native

Timed Apache Compilation

OpenBenchmarking.orgSeconds, Fewer Is BetterTimed Apache Compilation 2.4.7Time To CompileGCC 4.8.2 - StockGCC 4.8.2 - LTOGCC 4.9.0 RC1 - StockGCC 4.9.0 RC1 - LTO1020304050SE +/- 0.19, N = 3SE +/- 0.07, N = 3SE +/- 0.23, N = 3SE +/- 0.05, N = 327.1444.3727.8845.74
OpenBenchmarking.orgSeconds, Fewer Is BetterTimed Apache Compilation 2.4.7Time To CompileGCC 4.8.2 - StockGCC 4.8.2 - LTOGCC 4.9.0 RC1 - StockGCC 4.9.0 RC1 - LTO918273645Min: 26.79 / Avg: 27.14 / Max: 27.45Min: 44.28 / Avg: 44.37 / Max: 44.51Min: 27.52 / Avg: 27.88 / Max: 28.29Min: 45.65 / Avg: 45.74 / Max: 45.83

Timed ImageMagick Compilation

OpenBenchmarking.orgSeconds, Fewer Is BetterTimed ImageMagick Compilation 6.8.1-10Time To CompileGCC 4.8.2 - StockGCC 4.8.2 - LTOGCC 4.9.0 RC1 - StockGCC 4.9.0 RC1 - LTO306090120150SE +/- 0.36, N = 3SE +/- 0.30, N = 3SE +/- 0.04, N = 3SE +/- 0.32, N = 360.35124.5160.59129.91
OpenBenchmarking.orgSeconds, Fewer Is BetterTimed ImageMagick Compilation 6.8.1-10Time To CompileGCC 4.8.2 - StockGCC 4.8.2 - LTOGCC 4.9.0 RC1 - StockGCC 4.9.0 RC1 - LTO20406080100Min: 59.83 / Avg: 60.35 / Max: 61.06Min: 123.92 / Avg: 124.51 / Max: 124.93Min: 60.52 / Avg: 60.59 / Max: 60.66Min: 129.27 / Avg: 129.91 / Max: 130.32

Timed PHP Compilation

OpenBenchmarking.orgSeconds, Fewer Is BetterTimed PHP Compilation 5.2.9Time To CompileGCC 4.8.2 - StockGCC 4.8.2 - LTOGCC 4.9.0 RC1 - StockGCC 4.9.0 RC1 - LTO20406080100SE +/- 0.08, N = 3SE +/- 1.16, N = 3SE +/- 0.02, N = 3SE +/- 0.14, N = 326.2793.2927.0595.42-flto-flto1. (CC) gcc options: -O3 -march=native -pedantic -ldl -lz -lm
OpenBenchmarking.orgSeconds, Fewer Is BetterTimed PHP Compilation 5.2.9Time To CompileGCC 4.8.2 - StockGCC 4.8.2 - LTOGCC 4.9.0 RC1 - StockGCC 4.9.0 RC1 - LTO20406080100Min: 26.13 / Avg: 26.27 / Max: 26.39Min: 91.35 / Avg: 93.29 / Max: 95.37Min: 27.02 / Avg: 27.05 / Max: 27.08Min: 95.25 / Avg: 95.42 / Max: 95.71. (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 TimeGCC 4.8.2 - StockGCC 4.8.2 - LTOGCC 4.9.0 RC1 - StockGCC 4.9.0 RC1 - LTO48121620SE +/- 0.01, N = 3SE +/- 0.00, N = 3SE +/- 0.01, N = 3SE +/- 0.01, N = 316.9816.9817.0917.08-flto-flto1. (CC) gcc options: -lm -lpthread -O3 -march=native
OpenBenchmarking.orgSeconds, Fewer Is BetterC-Ray 1.1Total TimeGCC 4.8.2 - StockGCC 4.8.2 - LTOGCC 4.9.0 RC1 - StockGCC 4.9.0 RC1 - LTO48121620Min: 16.96 / Avg: 16.98 / Max: 16.99Min: 16.98 / Avg: 16.98 / Max: 16.99Min: 17.07 / Avg: 17.09 / Max: 17.1Min: 17.06 / Avg: 17.08 / Max: 17.091. (CC) gcc options: -lm -lpthread -O3 -march=native

ebizzy

OpenBenchmarking.orgSeconds, More Is Betterebizzy 0.3Records/sGCC 4.8.2 - StockGCC 4.8.2 - LTOGCC 4.9.0 RC1 - StockGCC 4.9.0 RC1 - LTO9K18K27K36K45KSE +/- 109.85, N = 3SE +/- 104.13, N = 3SE +/- 44.08, N = 3SE +/- 33.07, N = 342849426984295042565-flto-flto1. (CC) gcc options: -pthread -lpthread -O3 -march=native
OpenBenchmarking.orgSeconds, More Is Betterebizzy 0.3Records/sGCC 4.8.2 - StockGCC 4.8.2 - LTOGCC 4.9.0 RC1 - StockGCC 4.9.0 RC1 - LTO7K14K21K28K35KMin: 42736 / Avg: 42849.33 / Max: 43069Min: 42501 / Avg: 42698 / Max: 42855Min: 42864 / Avg: 42950.33 / Max: 43009Min: 42500 / Avg: 42564.67 / Max: 426091. (CC) gcc options: -pthread -lpthread -O3 -march=native

Open Porous Media

This is a test of a DUNE (Distributed and Unified Numerics Environment) module called OPM Benchmarks from the Open Porous Media project. Open Porous Media is a set of open-source tools concerning simulation of flow and transport of fluids in porous media. Learn more via the OpenBenchmarking.org test page.

OpenBenchmarking.orgSeconds, Fewer Is BetterOpen Porous Media 2013-11-26OPM Benchmark: Upscale-RelpermGCC 4.8.2 - StockGCC 4.8.2 - LTO20406080100SE +/- 0.17, N = 3SE +/- 0.38, N = 3100.58100.421. (F9X) gfortran options: -rdynamic
OpenBenchmarking.orgSeconds, Fewer Is BetterOpen Porous Media 2013-11-26OPM Benchmark: Upscale-RelpermGCC 4.8.2 - StockGCC 4.8.2 - LTO20406080100Min: 100.32 / Avg: 100.58 / Max: 100.9Min: 99.95 / Avg: 100.42 / Max: 101.181. (F9X) gfortran options: -rdynamic

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 4.8.2 - StockGCC 4.8.2 - LTO612182430SE +/- 0.00, N = 3SE +/- 0.00, N = 32424-flto1. (CXX) g++ options: -fopenmp -O3 -march=native
OpenBenchmarking.orgSeconds, Fewer Is BetterSmallpt 1.0Global Illumination Renderer; 100 SamplesGCC 4.8.2 - StockGCC 4.8.2 - LTO612182430Min: 24 / Avg: 24 / Max: 24Min: 24 / Avg: 24 / Max: 241. (CXX) g++ options: -fopenmp -O3 -march=native

FLAC Audio Encoding

OpenBenchmarking.orgSeconds, Fewer Is BetterFLAC Audio Encoding 1.3.0WAV To FLACGCC 4.8.2 - StockGCC 4.9.0 RC1 - StockGCC 4.9.0 RC1 - LTO1.08452.1693.25354.3385.4225SE +/- 0.06, N = 7SE +/- 0.09, N = 10SE +/- 0.09, N = 104.823.703.72-flto1. (CXX) g++ options: -O3 -march=native -fvisibility=hidden -logg -lm
OpenBenchmarking.orgSeconds, Fewer Is BetterFLAC Audio Encoding 1.3.0WAV To FLACGCC 4.8.2 - StockGCC 4.9.0 RC1 - StockGCC 4.9.0 RC1 - LTO246810Min: 4.75 / Avg: 4.82 / Max: 5.2Min: 3.61 / Avg: 3.7 / Max: 4.47Min: 3.61 / Avg: 3.72 / Max: 4.561. (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 MP3GCC 4.8.2 - StockGCC 4.8.2 - LTOGCC 4.9.0 RC1 - StockGCC 4.9.0 RC1 - LTO3691215SE +/- 0.04, N = 5SE +/- 0.05, N = 5SE +/- 0.01, N = 5SE +/- 0.01, N = 512.4213.2410.8710.88-flto-flto1. (CC) gcc options: -pipe -O3 -march=native -lm
OpenBenchmarking.orgSeconds, Fewer Is BetterLAME MP3 Encoding 3.99.3WAV To MP3GCC 4.8.2 - StockGCC 4.8.2 - LTOGCC 4.9.0 RC1 - StockGCC 4.9.0 RC1 - LTO48121620Min: 12.37 / Avg: 12.42 / Max: 12.57Min: 13.03 / Avg: 13.24 / Max: 13.31Min: 10.85 / Avg: 10.87 / Max: 10.89Min: 10.86 / Avg: 10.88 / Max: 10.941. (CC) gcc options: -pipe -O3 -march=native -lm

FFmpeg

OpenBenchmarking.orgSeconds, Fewer Is BetterFFmpeg 2.1.1H.264 HD To NTSC DVGCC 4.8.2 - StockGCC 4.8.2 - LTOGCC 4.9.0 RC1 - StockGCC 4.9.0 RC1 - LTO48121620SE +/- 0.03, N = 3SE +/- 0.07, N = 3SE +/- 0.01, N = 3SE +/- 0.06, N = 313.9913.8013.8013.75-flto-flto1. (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 -fno-tree-vectorize -MMD -MF -MT
OpenBenchmarking.orgSeconds, Fewer Is BetterFFmpeg 2.1.1H.264 HD To NTSC DVGCC 4.8.2 - StockGCC 4.8.2 - LTOGCC 4.9.0 RC1 - StockGCC 4.9.0 RC1 - LTO48121620Min: 13.94 / Avg: 13.99 / Max: 14.05Min: 13.68 / Avg: 13.8 / Max: 13.94Min: 13.77 / Avg: 13.8 / Max: 13.82Min: 13.64 / Avg: 13.75 / Max: 13.831. (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 -fno-tree-vectorize -MMD -MF -MT

Open FMM Nero2D

OpenBenchmarking.orgSeconds, Fewer Is BetterOpen FMM Nero2D 2.0.2Total TimeGCC 4.8.2 - StockGCC 4.8.2 - LTO100200300400500453.45458.86-flto1. (CXX) g++ options: -O3 -march=native -lfftw3 -llapack -lf77blas -latlas -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 4.8.2 - StockGCC 4.8.2 - LTOGCC 4.9.0 RC1 - StockGCC 4.9.0 RC1 - LTO80M160M240M320M400MSE +/- 103032.27, N = 3SE +/- 129752.70, N = 3SE +/- 362392.17, N = 3SE +/- 994638.92, N = 3367476347.00367633749.83373674384.83371516290.66-flto-flto1. (CC) gcc options: -O3 -march=native -lm
OpenBenchmarking.orgQUIPs, More Is BetterHierarchical INTegration 1.0Test: FLOATGCC 4.8.2 - StockGCC 4.8.2 - LTOGCC 4.9.0 RC1 - StockGCC 4.9.0 RC1 - LTO60M120M180M240M300MMin: 367310447.83 / Avg: 367476347 / Max: 367665150.47Min: 367476184.56 / Avg: 367633749.83 / Max: 367891102.28Min: 373260902.43 / Avg: 373674384.83 / Max: 374396643.72Min: 369568812.94 / Avg: 371516290.66 / Max: 3728413381. (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 4.8.2 - StockGCC 4.8.2 - LTOGCC 4.9.0 RC1 - StockGCC 4.9.0 RC1 - LTO8K16K24K32K40KSE +/- 136.25, N = 3SE +/- 75.16, N = 3SE +/- 76.61, N = 3SE +/- 55.60, N = 335904.5335521.5135953.7335817.51-flto-flto1. (CC) gcc options: -shared -fPIC -pthread -O3 -march=native
OpenBenchmarking.orgRequests Per Second, More Is BetterApache Benchmark 2.4.7Static Web Page ServingGCC 4.8.2 - StockGCC 4.8.2 - LTOGCC 4.9.0 RC1 - StockGCC 4.9.0 RC1 - LTO6K12K18K24K30KMin: 35742.3 / Avg: 35904.53 / Max: 36175.27Min: 35391.58 / Avg: 35521.51 / Max: 35651.93Min: 35876.57 / Avg: 35953.73 / Max: 36106.94Min: 35722.34 / Avg: 35817.51 / Max: 35914.891. (CC) gcc options: -shared -fPIC -pthread -O3 -march=native