Fedora 21 GCC Compiler Optimizations

Compiler optimization benchmarks by Michael Larabel 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 1411071-LI-FEDORA21G97
Jump To Table - Results

View

Do Not Show Noisy Results
Do Not Show Results With Incomplete Data
Do Not Show Results With Little Change/Spread
List Notable Results

Limit displaying results to tests within:

Audio Encoding 2 Tests
C/C++ Compiler Tests 7 Tests
CPU Massive 7 Tests
Creator Workloads 4 Tests
Encoding 2 Tests
Multi-Core 4 Tests
Server CPU Tests 2 Tests
Single-Threaded 3 Tests

Statistics

Show Overall Harmonic Mean(s)
Show Overall Geometric Mean
Show Geometric Means Per-Suite/Category
Show Wins / Losses Counts (Pie Chart)
Normalize Results
Remove Outliers Before Calculating Averages

Graph Settings

Force Line Graphs Where Applicable
Convert To Scalar Where Applicable
Prefer Vertical Bar Graphs

Multi-Way Comparison

Condense Multi-Option Tests Into Single Result Graphs

Table

Show Detailed System Result Table

Run Management

Highlight
Result
Hide
Result
Result
Identifier
View Logs
Performance Per
Dollar
Date
Run
  Test
  Duration
-O0
November 07 2014
 
-O2
November 07 2014
 
-O3
November 07 2014
 
-O3 -march=native
November 07 2014
 
-O3 -march=native -flto
November 07 2014
 
-Ofast -march=native
November 07 2014
 
Invert Hiding All Results Option
 

Only show results where is faster than
Only show results matching title/arguments (delimit multiple options with a comma):
Do not show results matching title/arguments (delimit multiple options with a comma):

-O0

Compiler Notes: --build=x86_64-redhat-linux --disable-libgcj --disable-libunwind-exceptions --enable-__cxa_atexit --enable-bootstrap --enable-checking=release --enable-gnu-indirect-function --enable-gnu-unique-object --enable-initfini-array --enable-languages=c,c++,objc,obj-c++,fortran,ada,go,lto --enable-multilib --enable-plugin --enable-shared --enable-threads=posix --mandir=/usr/share/man --with-arch_32=i686 --with-linker-hash-style=gnu --with-tune=generic
Processor Notes: Scaling Governor: intel_pstate powersave
System Notes: SELinux: Enabled.

-O2

-O3

-O3 -march=native

-O3 -march=native -flto

-Ofast -march=native

Processor: Intel Xeon E5-1680 v3 @ 3.80GHz (16 Cores), Motherboard: MSI X99S SLI PLUS (MS-7885) v1.0, Chipset: Intel Xeon E5 v3/Core, Memory: 16384MB, Disk: 80GB INTEL SSDSCKGW08, Graphics: eVGA NVIDIA GeForce GT 740 1024MB, Audio: Intel C610/X99, Monitor: VE228, Network: Intel Connection

OS: Fedora 21, Kernel: 3.18.0-0.rc3.git2.2.fc22.1.x86_64 (x86_64), Desktop: GNOME Shell 3.14.1.5, Display Server: X Server 1.16.1, Display Driver: nouveau 1.0.10, OpenGL: 3.3 Mesa 10.3.2 Gallium 0.4, Compiler: GCC 4.9.2 20141101 + LLVM 3.4.2, File-System: ext4, Screen Resolution: 1920x1080

Fedora 21 GCC Compiler OptimizationsOpenBenchmarking.orgPhoronix Test SuiteIntel Xeon E5-1680 v3 @ 3.80GHz (16 Cores)MSI X99S SLI PLUS (MS-7885) v1.0Intel Xeon E5 v3/Core16384MB80GB INTEL SSDSCKGW08eVGA NVIDIA GeForce GT 740 1024MBIntel C610/X99VE228Intel ConnectionFedora 213.18.0-0.rc3.git2.2.fc22.1.x86_64 (x86_64)GNOME Shell 3.14.1.5X Server 1.16.1nouveau 1.0.103.3 Mesa 10.3.2 Gallium 0.4GCC 4.9.2 20141101 + LLVM 3.4.2ext41920x1080ProcessorMotherboardChipsetMemoryDiskGraphicsAudioMonitorNetworkOSKernelDesktopDisplay ServerDisplay DriverOpenGLCompilerFile-SystemScreen ResolutionFedora 21 GCC Compiler Optimizations PerformanceSystem Logs- --build=x86_64-redhat-linux --disable-libgcj --disable-libunwind-exceptions --enable-__cxa_atexit --enable-bootstrap --enable-checking=release --enable-gnu-indirect-function --enable-gnu-unique-object --enable-initfini-array --enable-languages=c,c++,objc,obj-c++,fortran,ada,go,lto --enable-multilib --enable-plugin --enable-shared --enable-threads=posix --mandir=/usr/share/man --with-arch_32=i686 --with-linker-hash-style=gnu --with-tune=generic - Scaling Governor: intel_pstate powersave- SELinux: Enabled.

-O0-O2-O3-O3 -march=native-O3 -march=native -flto-Ofast -march=nativeResult OverviewPhoronix Test Suite100%199%298%397%496%PrimesieveHimeno BenchmarkC-RaySciMark

Fedora 21 GCC Compiler Optimizationsscimark2: Monte Carloscimark2: Fast Fourier Transformgcrypt: CAMELLIA256-ECB Ciphergraphics-magick: Blurgraphics-magick: Sharpengraphics-magick: Resizinggraphics-magick: HWB Color Spacegraphics-magick: Local Adaptive Thresholdinghimeno: Poisson Pressure Solverbuild-apache: Time To Compilec-ray: Total Timeprimesieve: 1e12 Prime Number Generationencode-flac: WAV To FLACencode-mp3: WAV To MP3-O0-O2-O3-O3 -march=native-O3 -march=native -flto-Ofast -march=native599.65443.4873176660989819461.4217.6336.27214.1420.8934.07600.06472.281897100130177144921996.7230.3423.7845.865.5812.91591.22444.881972104128172141921997.6032.7213.6945.904.7712.32589.31472.981792138141182168921909.1026.829.3343.203.9311.38673.31467.8119972222.879.3243.16602.01458.28137141182197922119.0626.398.4643.193.8910.44OpenBenchmarking.org

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: Monte Carlo-O0-O2-O3-O3 -march=native-O3 -march=native -flto-Ofast -march=native150300450600750SE +/- 0.18, N = 4SE +/- 0.05, N = 4SE +/- 8.40, N = 4SE +/- 12.70, N = 4SE +/- 0.02, N = 4SE +/- 0.01, N = 4599.65600.06591.22589.31673.31602.01-O0-O2-O3-O3 -march=native-O3 -march=native -flto-Ofast -march=native1. (CXX) g++ options:
OpenBenchmarking.orgMflops, More Is BetterSciMark 2.0Computational Test: Monte Carlo-O0-O2-O3-O3 -march=native-O3 -march=native -flto-Ofast -march=native120240360480600Min: 599.12 / Avg: 599.65 / Max: 599.89Min: 599.91 / Avg: 600.06 / Max: 600.12Min: 566.02 / Avg: 591.22 / Max: 599.63Min: 551.21 / Avg: 589.31 / Max: 602.04Min: 673.28 / Avg: 673.31 / Max: 673.35Min: 601.99 / Avg: 602.01 / Max: 602.031. (CXX) g++ options:

OpenBenchmarking.orgMflops, More Is BetterSciMark 2.0Computational Test: Fast Fourier Transform-O0-O2-O3-O3 -march=native-O3 -march=native -flto-Ofast -march=native100200300400500SE +/- 1.80, N = 4SE +/- 2.76, N = 4SE +/- 0.68, N = 4SE +/- 2.49, N = 4SE +/- 1.02, N = 4SE +/- 3.16, N = 4443.48472.28444.88472.98467.81458.28-O0-O2-O3-O3 -march=native-O3 -march=native -flto-Ofast -march=native1. (CXX) g++ options:
OpenBenchmarking.orgMflops, More Is BetterSciMark 2.0Computational Test: Fast Fourier Transform-O0-O2-O3-O3 -march=native-O3 -march=native -flto-Ofast -march=native80160240320400Min: 439.56 / Avg: 443.48 / Max: 447.59Min: 467.6 / Avg: 472.28 / Max: 480.27Min: 443.65 / Avg: 444.88 / Max: 446.48Min: 468.04 / Avg: 472.98 / Max: 479.54Min: 465.26 / Avg: 467.81 / Max: 469.63Min: 451.8 / Avg: 458.28 / Max: 464.881. (CXX) g++ options:

Gcrypt Library

OpenBenchmarking.orgMicroseconds, Fewer Is BetterGcrypt Library 1.4.4CAMELLIA256-ECB Cipher-O0-O2-O3-O3 -march=native-O3 -march=native -flto16003200480064008000SE +/- 12.02, N = 3SE +/- 34.80, N = 3SE +/- 150.41, N = 6SE +/- 28.33, N = 6SE +/- 26.79, N = 673171897197217921997-O0-O2-O3-O3 -march=native-O3 -march=native -flto1. (CC) gcc options: -fvisibility=hidden
OpenBenchmarking.orgMicroseconds, Fewer Is BetterGcrypt Library 1.4.4CAMELLIA256-ECB Cipher-O0-O2-O3-O3 -march=native-O3 -march=native -flto13002600390052006500Min: 7300 / Avg: 7316.67 / Max: 7340Min: 1840 / Avg: 1896.67 / Max: 1960Min: 1220 / Avg: 1971.67 / Max: 2140Min: 1710 / Avg: 1791.67 / Max: 1890Min: 1910 / Avg: 1996.67 / Max: 20701. (CC) gcc options: -fvisibility=hidden

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: Blur-O0-O2-O3-O3 -march=native-Ofast -march=native306090120150SE +/- 1.15, N = 3SE +/- 3.53, N = 6SE +/- 1.86, N = 3SE +/- 0.33, N = 3SE +/- 0.33, N = 366100104138137-O0-O2-O3-O3 -march=native-Ofast -march=native1. (CC) gcc options: -std=gnu99 -fopenmp -pthread -ltiff -lfreetype -ljpeg -lXext -lX11 -llzma -lbz2 -lxml2 -lz -lm -lgomp -lpthread
OpenBenchmarking.orgIterations Per Minute, More Is BetterGraphicsMagick 1.3.19Operation: Blur-O0-O2-O3-O3 -march=native-Ofast -march=native306090120150Min: 64 / Avg: 66 / Max: 68Min: 92 / Avg: 100.17 / Max: 115Min: 102 / Avg: 104.33 / Max: 108Min: 138 / Avg: 138.33 / Max: 139Min: 137 / Avg: 137.33 / Max: 1381. (CC) gcc options: -std=gnu99 -fopenmp -pthread -ltiff -lfreetype -ljpeg -lXext -lX11 -llzma -lbz2 -lxml2 -lz -lm -lgomp -lpthread

OpenBenchmarking.orgIterations Per Minute, More Is BetterGraphicsMagick 1.3.19Operation: Sharpen-O0-O2-O3-O3 -march=native-Ofast -march=native306090120150SE +/- 0.33, N = 3SE +/- 0.67, N = 3SE +/- 0.88, N = 3SE +/- 0.33, N = 3SE +/- 0.00, N = 360130128141141-O0-O2-O3-O3 -march=native-Ofast -march=native1. (CC) gcc options: -std=gnu99 -fopenmp -pthread -ltiff -lfreetype -ljpeg -lXext -lX11 -llzma -lbz2 -lxml2 -lz -lm -lgomp -lpthread
OpenBenchmarking.orgIterations Per Minute, More Is BetterGraphicsMagick 1.3.19Operation: Sharpen-O0-O2-O3-O3 -march=native-Ofast -march=native306090120150Min: 60 / Avg: 60.33 / Max: 61Min: 129 / Avg: 130.33 / Max: 131Min: 127 / Avg: 128.33 / Max: 130Min: 141 / Avg: 141.33 / Max: 142Min: 141 / Avg: 141 / Max: 1411. (CC) gcc options: -std=gnu99 -fopenmp -pthread -ltiff -lfreetype -ljpeg -lXext -lX11 -llzma -lbz2 -lxml2 -lz -lm -lgomp -lpthread

OpenBenchmarking.orgIterations Per Minute, More Is BetterGraphicsMagick 1.3.19Operation: Resizing-O0-O2-O3-O3 -march=native-Ofast -march=native4080120160200SE +/- 0.33, N = 3SE +/- 0.88, N = 3SE +/- 0.58, N = 3SE +/- 0.00, N = 3SE +/- 0.00, N = 398177172182182-O0-O2-O3-O3 -march=native-Ofast -march=native1. (CC) gcc options: -std=gnu99 -fopenmp -pthread -ltiff -lfreetype -ljpeg -lXext -lX11 -llzma -lbz2 -lxml2 -lz -lm -lgomp -lpthread
OpenBenchmarking.orgIterations Per Minute, More Is BetterGraphicsMagick 1.3.19Operation: Resizing-O0-O2-O3-O3 -march=native-Ofast -march=native306090120150Min: 97 / Avg: 97.67 / Max: 98Min: 175 / Avg: 176.67 / Max: 178Min: 171 / Avg: 172 / Max: 173Min: 182 / Avg: 182 / Max: 182Min: 182 / Avg: 182 / Max: 1821. (CC) gcc options: -std=gnu99 -fopenmp -pthread -ltiff -lfreetype -ljpeg -lXext -lX11 -llzma -lbz2 -lxml2 -lz -lm -lgomp -lpthread

OpenBenchmarking.orgIterations Per Minute, More Is BetterGraphicsMagick 1.3.19Operation: HWB Color Space-O0-O2-O3-O3 -march=native-Ofast -march=native4080120160200SE +/- 2.02, N = 6SE +/- 2.43, N = 6SE +/- 2.03, N = 3SE +/- 2.42, N = 5SE +/- 1.20, N = 398144141168197-O0-O2-O3-O3 -march=native-Ofast -march=native1. (CC) gcc options: -std=gnu99 -fopenmp -pthread -ltiff -lfreetype -ljpeg -lXext -lX11 -llzma -lbz2 -lxml2 -lz -lm -lgomp -lpthread
OpenBenchmarking.orgIterations Per Minute, More Is BetterGraphicsMagick 1.3.19Operation: HWB Color Space-O0-O2-O3-O3 -march=native-Ofast -march=native4080120160200Min: 92 / Avg: 98.17 / Max: 104Min: 140 / Avg: 144.33 / Max: 156Min: 138 / Avg: 141.33 / Max: 145Min: 160 / Avg: 167.6 / Max: 174Min: 195 / Avg: 196.67 / Max: 1991. (CC) gcc options: -std=gnu99 -fopenmp -pthread -ltiff -lfreetype -ljpeg -lXext -lX11 -llzma -lbz2 -lxml2 -lz -lm -lgomp -lpthread

OpenBenchmarking.orgIterations Per Minute, More Is BetterGraphicsMagick 1.3.19Operation: Local Adaptive Thresholding-O0-O2-O3-O3 -march=native-Ofast -march=native20406080100SE +/- 0.00, N = 3SE +/- 0.00, N = 3SE +/- 0.00, N = 3SE +/- 0.33, N = 3SE +/- 0.00, N = 31992929292-O0-O2-O3-O3 -march=native-Ofast -march=native1. (CC) gcc options: -std=gnu99 -fopenmp -pthread -ltiff -lfreetype -ljpeg -lXext -lX11 -llzma -lbz2 -lxml2 -lz -lm -lgomp -lpthread
OpenBenchmarking.orgIterations Per Minute, More Is BetterGraphicsMagick 1.3.19Operation: Local Adaptive Thresholding-O0-O2-O3-O3 -march=native-Ofast -march=native20406080100Min: 19 / Avg: 19 / Max: 19Min: 92 / Avg: 92 / Max: 92Min: 92 / Avg: 92 / Max: 92Min: 92 / Avg: 92.33 / Max: 93Min: 92 / Avg: 92 / Max: 921. (CC) gcc options: -std=gnu99 -fopenmp -pthread -ltiff -lfreetype -ljpeg -lXext -lX11 -llzma -lbz2 -lxml2 -lz -lm -lgomp -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 Solver-O0-O2-O3-O3 -march=native-O3 -march=native -flto-Ofast -march=native5001000150020002500SE +/- 6.01, N = 3SE +/- 3.75, N = 3SE +/- 1.73, N = 3SE +/- 2.07, N = 3SE +/- 1.97, N = 3SE +/- 0.90, N = 3461.421996.721997.601909.102222.872119.06-O0-O2-march=native-march=native -flto-Ofast -march=native1. (CC) gcc options: -O3
OpenBenchmarking.orgMFLOPS, More Is BetterHimeno Benchmark 3.0Poisson Pressure Solver-O0-O2-O3-O3 -march=native-O3 -march=native -flto-Ofast -march=native400800120016002000Min: 449.53 / Avg: 461.42 / Max: 468.93Min: 1989.29 / Avg: 1996.72 / Max: 2001.37Min: 1994.2 / Avg: 1997.6 / Max: 1999.86Min: 1906.98 / Avg: 1909.1 / Max: 1913.24Min: 2219.61 / Avg: 2222.87 / Max: 2226.4Min: 2117.34 / Avg: 2119.06 / Max: 2120.351. (CC) gcc options: -O3

Timed Apache Compilation

This test times how long it takes to build the Apache HTTP Server. Learn more via the OpenBenchmarking.org test page.

OpenBenchmarking.orgSeconds, Fewer Is BetterTimed Apache Compilation 2.4.7Time To Compile-O0-O2-O3-O3 -march=native-Ofast -march=native816243240SE +/- 0.28, N = 3SE +/- 0.68, N = 6SE +/- 0.66, N = 6SE +/- 0.08, N = 3SE +/- 0.20, N = 317.6330.3432.7226.8226.39
OpenBenchmarking.orgSeconds, Fewer Is BetterTimed Apache Compilation 2.4.7Time To Compile-O0-O2-O3-O3 -march=native-Ofast -march=native714212835Min: 17.08 / Avg: 17.63 / Max: 17.99Min: 28.92 / Avg: 30.34 / Max: 33.18Min: 30.55 / Avg: 32.72 / Max: 34.9Min: 26.68 / Avg: 26.82 / Max: 26.97Min: 26.17 / Avg: 26.39 / Max: 26.79

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 Time-O0-O2-O3-O3 -march=native-O3 -march=native -flto-Ofast -march=native816243240SE +/- 0.27, N = 3SE +/- 0.23, N = 3SE +/- 0.28, N = 6SE +/- 0.02, N = 3SE +/- 0.01, N = 3SE +/- 0.01, N = 336.2723.7813.699.339.328.46-O0-O2-march=native-march=native -flto-Ofast -march=native1. (CC) gcc options: -lm -lpthread -O3
OpenBenchmarking.orgSeconds, Fewer Is BetterC-Ray 1.1Total Time-O0-O2-O3-O3 -march=native-O3 -march=native -flto-Ofast -march=native816243240Min: 35.74 / Avg: 36.27 / Max: 36.64Min: 23.33 / Avg: 23.78 / Max: 24.11Min: 12.86 / Avg: 13.69 / Max: 14.51Min: 9.3 / Avg: 9.33 / Max: 9.37Min: 9.3 / Avg: 9.32 / Max: 9.34Min: 8.43 / Avg: 8.46 / Max: 8.481. (CC) gcc options: -lm -lpthread -O3

Primesieve

OpenBenchmarking.orgSeconds, Fewer Is BetterPrimesieve 5.41e12 Prime Number Generation-O0-O2-O3-O3 -march=native-O3 -march=native -flto-Ofast -march=native50100150200250SE +/- 0.08, N = 3SE +/- 0.14, N = 3SE +/- 0.22, N = 3SE +/- 0.02, N = 3SE +/- 0.03, N = 3SE +/- 0.02, N = 3214.1445.8645.9043.2043.1643.19-O0-O2-O3-O3 -march=native-O3 -march=native -flto-Ofast -march=native1. (CXX) g++ options: -fopenmp
OpenBenchmarking.orgSeconds, Fewer Is BetterPrimesieve 5.41e12 Prime Number Generation-O0-O2-O3-O3 -march=native-O3 -march=native -flto-Ofast -march=native4080120160200Min: 213.99 / Avg: 214.14 / Max: 214.23Min: 45.7 / Avg: 45.86 / Max: 46.13Min: 45.46 / Avg: 45.9 / Max: 46.2Min: 43.17 / Avg: 43.2 / Max: 43.22Min: 43.13 / Avg: 43.16 / Max: 43.21Min: 43.16 / Avg: 43.19 / Max: 43.221. (CXX) g++ options: -fopenmp

FLAC Audio Encoding

OpenBenchmarking.orgSeconds, Fewer Is BetterFLAC Audio Encoding 1.3.0WAV To FLAC-O0-O2-O3-O3 -march=native-Ofast -march=native510152025SE +/- 0.03, N = 5SE +/- 0.03, N = 5SE +/- 0.02, N = 5SE +/- 0.03, N = 5SE +/- 0.03, N = 520.895.584.773.933.89-O0-O2-O3-O3 -march=native-Ofast -march=native1. (CXX) g++ options: -fvisibility=hidden -lm
OpenBenchmarking.orgSeconds, Fewer Is BetterFLAC Audio Encoding 1.3.0WAV To FLAC-O0-O2-O3-O3 -march=native-Ofast -march=native510152025Min: 20.83 / Avg: 20.89 / Max: 20.98Min: 5.48 / Avg: 5.58 / Max: 5.66Min: 4.71 / Avg: 4.77 / Max: 4.83Min: 3.8 / Avg: 3.93 / Max: 3.99Min: 3.81 / Avg: 3.89 / Max: 3.971. (CXX) g++ options: -fvisibility=hidden -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 MP3-O0-O2-O3-O3 -march=native-Ofast -march=native816243240SE +/- 0.04, N = 5SE +/- 0.13, N = 5SE +/- 0.03, N = 5SE +/- 0.01, N = 5SE +/- 0.03, N = 534.0712.9112.3211.3810.44-O0-O2-O3-O3 -march=native-Ofast -march=native1. (CC) gcc options: -pipe -lncurses -lm
OpenBenchmarking.orgSeconds, Fewer Is BetterLAME MP3 Encoding 3.99.3WAV To MP3-O0-O2-O3-O3 -march=native-Ofast -march=native714212835Min: 33.99 / Avg: 34.07 / Max: 34.18Min: 12.66 / Avg: 12.91 / Max: 13.26Min: 12.25 / Avg: 12.32 / Max: 12.42Min: 11.34 / Avg: 11.38 / Max: 11.42Min: 10.35 / Avg: 10.44 / Max: 10.521. (CC) gcc options: -pipe -lncurses -lm

-O0

Compiler Notes: --build=x86_64-redhat-linux --disable-libgcj --disable-libunwind-exceptions --enable-__cxa_atexit --enable-bootstrap --enable-checking=release --enable-gnu-indirect-function --enable-gnu-unique-object --enable-initfini-array --enable-languages=c,c++,objc,obj-c++,fortran,ada,go,lto --enable-multilib --enable-plugin --enable-shared --enable-threads=posix --mandir=/usr/share/man --with-arch_32=i686 --with-linker-hash-style=gnu --with-tune=generic
Processor Notes: Scaling Governor: intel_pstate powersave
System Notes: SELinux: Enabled.

Testing initiated at 7 November 2014 12:32 by user phoronix.

-O2

Compiler Notes: --build=x86_64-redhat-linux --disable-libgcj --disable-libunwind-exceptions --enable-__cxa_atexit --enable-bootstrap --enable-checking=release --enable-gnu-indirect-function --enable-gnu-unique-object --enable-initfini-array --enable-languages=c,c++,objc,obj-c++,fortran,ada,go,lto --enable-multilib --enable-plugin --enable-shared --enable-threads=posix --mandir=/usr/share/man --with-arch_32=i686 --with-linker-hash-style=gnu --with-tune=generic
Processor Notes: Scaling Governor: intel_pstate powersave
System Notes: SELinux: Enabled.

Testing initiated at 7 November 2014 14:50 by user phoronix.

-O3

Compiler Notes: --build=x86_64-redhat-linux --disable-libgcj --disable-libunwind-exceptions --enable-__cxa_atexit --enable-bootstrap --enable-checking=release --enable-gnu-indirect-function --enable-gnu-unique-object --enable-initfini-array --enable-languages=c,c++,objc,obj-c++,fortran,ada,go,lto --enable-multilib --enable-plugin --enable-shared --enable-threads=posix --mandir=/usr/share/man --with-arch_32=i686 --with-linker-hash-style=gnu --with-tune=generic
Processor Notes: Scaling Governor: intel_pstate powersave
System Notes: SELinux: Enabled.

Testing initiated at 7 November 2014 16:38 by user phoronix.

-O3 -march=native

Compiler Notes: --build=x86_64-redhat-linux --disable-libgcj --disable-libunwind-exceptions --enable-__cxa_atexit --enable-bootstrap --enable-checking=release --enable-gnu-indirect-function --enable-gnu-unique-object --enable-initfini-array --enable-languages=c,c++,objc,obj-c++,fortran,ada,go,lto --enable-multilib --enable-plugin --enable-shared --enable-threads=posix --mandir=/usr/share/man --with-arch_32=i686 --with-linker-hash-style=gnu --with-tune=generic
Processor Notes: Scaling Governor: intel_pstate powersave
System Notes: SELinux: Enabled.

Testing initiated at 7 November 2014 17:47 by user phoronix.

-O3 -march=native -flto

Compiler Notes: --build=x86_64-redhat-linux --disable-libgcj --disable-libunwind-exceptions --enable-__cxa_atexit --enable-bootstrap --enable-checking=release --enable-gnu-indirect-function --enable-gnu-unique-object --enable-initfini-array --enable-languages=c,c++,objc,obj-c++,fortran,ada,go,lto --enable-multilib --enable-plugin --enable-shared --enable-threads=posix --mandir=/usr/share/man --with-arch_32=i686 --with-linker-hash-style=gnu --with-tune=generic
Processor Notes: Scaling Governor: intel_pstate powersave
System Notes: SELinux: Enabled.

Testing initiated at 7 November 2014 18:23 by user phoronix.

-Ofast -march=native

Processor: Intel Xeon E5-1680 v3 @ 3.80GHz (16 Cores), Motherboard: MSI X99S SLI PLUS (MS-7885) v1.0, Chipset: Intel Xeon E5 v3/Core, Memory: 16384MB, Disk: 80GB INTEL SSDSCKGW08, Graphics: eVGA NVIDIA GeForce GT 740 1024MB, Audio: Intel C610/X99, Monitor: VE228, Network: Intel Connection

OS: Fedora 21, Kernel: 3.18.0-0.rc3.git2.2.fc22.1.x86_64 (x86_64), Desktop: GNOME Shell 3.14.1.5, Display Server: X Server 1.16.1, Display Driver: nouveau 1.0.10, OpenGL: 3.3 Mesa 10.3.2 Gallium 0.4, Compiler: GCC 4.9.2 20141101 + LLVM 3.4.2, File-System: ext4, Screen Resolution: 1920x1080

Compiler Notes: --build=x86_64-redhat-linux --disable-libgcj --disable-libunwind-exceptions --enable-__cxa_atexit --enable-bootstrap --enable-checking=release --enable-gnu-indirect-function --enable-gnu-unique-object --enable-initfini-array --enable-languages=c,c++,objc,obj-c++,fortran,ada,go,lto --enable-multilib --enable-plugin --enable-shared --enable-threads=posix --mandir=/usr/share/man --with-arch_32=i686 --with-linker-hash-style=gnu --with-tune=generic
Processor Notes: Scaling Governor: intel_pstate powersave
System Notes: SELinux: Enabled.

Testing initiated at 7 November 2014 18:45 by user phoronix.