Intel Atom D525 Compiler Testing

Intel Atom D525 testing with GCC 4.7 and LLVM/Clang 3.0 from the Ubuntu Quantal repository. Benchmarking by Michael Larabel for a future article on just looking at GCC vs. Clang on low-end low-power x86 hardware.

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Intel Atom D525 Compiler TestingProcessorMotherboardChipsetMemoryDiskGraphicsAudioNetworkOSKernelDesktopDisplay ServerDisplay DriverOpenGLCompilerFile-SystemScreen ResolutionLLVM-Clang 3.0GCC 4.7.1Intel Atom D525 @ 1.80GHz (4 Cores)FOXCONN NETBOX nT-435/535Intel Atom D4xx/D5xx/N4xx/N5xx2048MB500GB Western Digital WD5000BEVT-2Intel Atom D4xx/D5xx/N4xx/N5xx IGPRealtek ALC888Realtek RTL8111/8168B + Realtek RTL8191SEvA Wireless LANUbuntu (x86_64)Unity 6.4.0X Server 1.13.0intel Mesa 8.1-develClang 3.0-6ubuntu3ext41366x768GCC 4.7OpenBenchmarking.orgSystem Details- Compiz was running on this system.Compiler Details- GCC 4.7.1: --build=x86_64-linux-gnu --disable-werror --enable-checking=release --enable-clocale=gnu --enable-gnu-unique-object --enable-languages=c,c++,go,fortran,objc,obj-c++ --enable-libstdcxx-debug --enable-libstdcxx-time=yes --enable-nls --enable-objc-gc --enable-plugin --enable-shared --enable-threads=posix --host=x86_64-linux-gnu --target=x86_64-linux-gnu --with-arch-32=i686 --with-tune=generic -v

Intel Atom D525 Compiler Testinglammps: Rhodopsin Proteinffte: N=64, 1D Complex FFT Routinehmmer: Pfam Database Searchmafft: Multiple Sequence Alignmentscimark2: Monte Carloscimark2: Fast Fourier Transformscimark2: Sparse Matrix Multiplyscimark2: Dense LU Matrix Factorizationscimark2: Jacobi Successive Over-Relaxationtscp: AI Chess Performancevpxenc: vpxenchimeno: Poisson Pressure Solvercompress-7zip: Compress Speed Testc-ray: Total Timecompress-pbzip2: 256MB File Compressionsmallpt: Global Illumination Renderer; 100 Samplescrafty: Elapsed Timeencode-flac: WAV To FLACencode-mp3: WAV To MP3openssl: RSA 4096-bit Performanceapache: Static Web Page ServingLLVM-Clang 3.0GCC

LAMMPS Molecular Dynamics Simulator

Test: Rhodopsin Protein

OpenBenchmarking.orgLoop Time, Fewer Is BetterLAMMPS Molecular Dynamics Simulator 1.0Test: Rhodopsin ProteinLLVM-Clang 3.0GCC 4.7.1100200300400500SE +/- 0.64, N = 3SE +/- 0.67, N = 3426.79456.431. (CXX) g++ options: -lfftw -lmpich


Test: N=64, 1D Complex FFT Routine

OpenBenchmarking.orgMFLOPS, More Is BetterFFTE 5.0Test: N=64, 1D Complex FFT RoutineLLVM-Clang 3.0GCC 4.7.12004006008001000SE +/- 0.43, N = 3SE +/- 0.32, N = 3943.53943.951. (F9X) gfortran options: -O3 -fomit-frame-pointer -fopenmp -lmpichf90 -lmpich -lopa -lmpl -lrt -lcr -lpthread

Timed HMMer Search

Pfam Database Search

OpenBenchmarking.orgSeconds, Fewer Is BetterTimed HMMer Search 2.3.2Pfam Database SearchLLVM-Clang 3.0GCC 4.7.120406080100SE +/- 0.40, N = 3SE +/- 0.88, N = 3110.46101.731. (CC) gcc options: -O3 -march=native -pthread -lhmmer -lsquid -lm

Timed MAFFT Alignment

Multiple Sequence Alignment

OpenBenchmarking.orgSeconds, Fewer Is BetterTimed MAFFT Alignment 6.864Multiple Sequence AlignmentLLVM-Clang 3.0GCC 4.7.11530456075SE +/- 1.10, N = 6SE +/- 0.12, N = 367.3560.531. (CC) gcc options: -O3 -lm -lpthread


Computational Test: Monte Carlo

OpenBenchmarking.orgMflops, More Is BetterSciMark 2.0Computational Test: Monte CarloLLVM-Clang 3.0GCC 4.7.11530456075SE +/- 0.00, N = 4SE +/- 0.08, N = 469.5464.45


Computational Test: Fast Fourier Transform

OpenBenchmarking.orgMflops, More Is BetterSciMark 2.0Computational Test: Fast Fourier TransformLLVM-Clang 3.0GCC 4.7.1714212835SE +/- 0.05, N = 4SE +/- 0.03, N = 426.4627.76


Computational Test: Sparse Matrix Multiply

OpenBenchmarking.orgMflops, More Is BetterSciMark 2.0Computational Test: Sparse Matrix MultiplyLLVM-Clang 3.0GCC 4.7.14080120160200SE +/- 0.17, N = 4SE +/- 0.23, N = 4189.46170.67


Computational Test: Dense LU Matrix Factorization

OpenBenchmarking.orgMflops, More Is BetterSciMark 2.0Computational Test: Dense LU Matrix FactorizationLLVM-Clang 3.0GCC 4.7.14080120160200SE +/- 0.18, N = 4SE +/- 0.24, N = 4202.33181.53


Computational Test: Jacobi Successive Over-Relaxation

OpenBenchmarking.orgMflops, More Is BetterSciMark 2.0Computational Test: Jacobi Successive Over-RelaxationLLVM-Clang 3.0GCC 4.7.170140210280350SE +/- 0.38, N = 4SE +/- 0.64, N = 4341.03321.04


AI Chess Performance

OpenBenchmarking.orgNodes Per Second, More Is BetterTSCP 1.81AI Chess PerformanceLLVM-Clang 3.0GCC 4.7.130K60K90K120K150KSE +/- 121.45, N = 5SE +/- 27.43, N = 5117819118279

VP8 libvpx Encoding


OpenBenchmarking.orgFrames Per Second, More Is BetterVP8 libvpx Encoding 0.9.7-p1vpxencLLVM-Clang 3.0GCC +/- 0.01, N = 3SE +/- 0.02, N = 32.852.981. (CC) gcc options: -m64 -lvpx -lm -lpthread

Himeno Benchmark

Poisson Pressure Solver

OpenBenchmarking.orgMFLOPS, More Is BetterHimeno Benchmark 3.0Poisson Pressure SolverLLVM-Clang 3.0GCC 4.7.1306090120150SE +/- 1.69, N = 6SE +/- 0.06, N = 385.38138.381. (CC) gcc options: -O3 -march=native

7-Zip Compression

Compress Speed Test

OpenBenchmarking.orgMIPS, More Is Better7-Zip Compression 9.20.1Compress Speed TestLLVM-Clang 3.0GCC 4.7.1400800120016002000SE +/- 4.93, N = 3SE +/- 2.40, N = 3203020941. (CXX) g++ options: -pipe -lpthread


Total Time

OpenBenchmarking.orgSeconds, Fewer Is BetterC-Ray 1.1Total TimeLLVM-Clang 3.0GCC 4.7.1110220330440550SE +/- 0.08, N = 3SE +/- 0.06, N = 3490.12363.441. (CC) gcc options: -lm -lpthread -O3 -march=native

Parallel BZIP2 Compression

256MB File Compression

OpenBenchmarking.orgSeconds, Fewer Is BetterParallel BZIP2 Compression 1.0.5256MB File CompressionLLVM-Clang 3.0GCC 4.7.120406080100SE +/- 0.83, N = 3SE +/- 1.38, N = 3106.7589.671. (CXX) g++ options: -O2 -pthread -lpthread -lbz2


Global Illumination Renderer; 100 Samples

OpenBenchmarking.orgSeconds, Fewer Is BetterSmallpt 1.0Global Illumination Renderer; 100 SamplesLLVM-Clang 3.0GCC 4.7.130060090012001500SE +/- 0.33, N = 3SE +/- 0.33, N = 313373261. (CXX) g++ options: -fopenmp -O3 -march=native


Elapsed Time

OpenBenchmarking.orgSeconds, Fewer Is BetterCrafty 23.4Elapsed TimeLLVM-Clang 3.0GCC 4.7.1110220330440550SE +/- 0.63, N = 3SE +/- 0.72, N = 3517.85463.931. (CC) gcc options: -lstdc++ -lm

FLAC Audio Encoding


OpenBenchmarking.orgSeconds, Fewer Is BetterFLAC Audio Encoding 1.2.1WAV To FLACLLVM-Clang 3.01122334455SE +/- 0.05, N = 550.291. (CXX) g++ options: -O3 -march=native -logg -lm

LAME MP3 Encoding


OpenBenchmarking.orgSeconds, Fewer Is BetterLAME MP3 Encoding 3.99.3WAV To MP3LLVM-Clang 3.0GCC 4.7.120406080100SE +/- 0.07, N = 5SE +/- 0.04, N = 5110.5992.63


RSA 4096-bit Performance

OpenBenchmarking.orgSigns Per Second, More Is BetterOpenSSL 1.0.0eRSA 4096-bit PerformanceLLVM-Clang 3.0GCC 4.7.1246810SE +/- 0.00, N = 4SE +/- 0.00, N = 47.607.601. (CC) gcc options: -m64 -O3 -lssl -lcrypto -ldl

Apache Benchmark

Static Web Page Serving

OpenBenchmarking.orgRequests Per Second, More Is BetterApache Benchmark 2.2.21Static Web Page ServingLLVM-Clang 3.0GCC 4.7.17001400210028003500SE +/- 2.91, N = 3SE +/- 6.86, N = 33135.733039.211. (CC) gcc options: -pthread -O3 -march=native -lm -lrt -lcrypt -lpthread -ldl

Phoronix Test Suite v10.8.3