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 Phoronix.com just looking at GCC vs. Clang on low-end low-power x86 hardware. ,,"LLVM-Clang 3.0","GCC 4.7.1" Processor,,Intel Atom D525 @ 1.80GHz (4 Cores),Intel Atom D525 @ 1.80GHz (4 Cores) Motherboard,,FOXCONN NETBOX nT-435/535,FOXCONN NETBOX nT-435/535 Chipset,,Intel Atom D4xx/D5xx/N4xx/N5xx,Intel Atom D4xx/D5xx/N4xx/N5xx Memory,,2048MB,2048MB Disk,,500GB Western Digital WD5000BEVT-2,500GB Western Digital WD5000BEVT-2 Graphics,,Intel Atom D4xx/D5xx/N4xx/N5xx IGP,Intel Atom D4xx/D5xx/N4xx/N5xx IGP Audio,,Realtek ALC888,Realtek ALC888 Network,,Realtek RTL8111/8168B + Realtek RTL8191SEvA Wireless LAN,Realtek RTL8111/8168B + Realtek RTL8191SEvA Wireless LAN OS,,Ubuntu 12.10,Ubuntu 12.10 Kernel,,3.5.0-14-generic (x86_64),3.5.0-14-generic (x86_64) Desktop,,Unity 6.4.0,Unity 6.4.0 Display Server,,X Server 1.13.0,X Server 1.13.0 Display Driver,,intel 2.20.7,intel 2.20.7 OpenGL,,1.4 Mesa 8.1-devel,1.4 Mesa 8.1-devel Compiler,,Clang 3.0-6ubuntu3,GCC 4.7 File-System,,ext4,ext4 Screen Resolution,,1366x768,1366x768 ,,"LLVM-Clang 3.0","GCC 4.7.1" "VP8 libvpx Encoding - vpxenc (FPS)",HIB,2.85,2.98 "FFTE - Test: N=64, 1D Complex FFT Routine (MFLOPS)",HIB,943.53,943.95 "SciMark - Computational Test: Monte Carlo (Mflops)",HIB,69.54,64.45 "SciMark - Computational Test: Fast Fourier Transform (Mflops)",HIB,26.46,27.76 "SciMark - Computational Test: Sparse Matrix Multiply (Mflops)",HIB,189.46,170.67 "SciMark - Computational Test: Dense LU Matrix Factorization (Mflops)",HIB,202.33,181.53 "SciMark - Computational Test: Jacobi Successive Over-Relaxation (Mflops)",HIB,341.03,321.04 "Himeno Benchmark - Poisson Pressure Solver (MFLOPS)",HIB,85.38,138.38 "7-Zip Compression - Compress Speed Test (MIPS)",HIB,2030,2094 "TSCP - AI Chess Performance (Nodes/s)",HIB,117819,118279 "Apache Benchmark - Static Web Page Serving (Reqs/sec)",HIB,3135.73,3039.21 "OpenSSL - RSA 4096-bit Performance (Signs/sec)",HIB,7.60,7.60 "LAMMPS Molecular Dynamics Simulator - Test: Rhodopsin Protein (Loop Time)",LIB,426.79,456.43 "Timed HMMer Search - Pfam Database Search (sec)",LIB,110.46,101.73 "Timed MAFFT Alignment - Multiple Sequence Alignment (sec)",LIB,67.35,60.53 "C-Ray - Total Time (sec)",LIB,490.12,363.44 "Parallel BZIP2 Compression - 256MB File Compression (sec)",LIB,106.75,89.67 "Smallpt - Global Illumination Renderer; 100 Samples (sec)",LIB,1337,326 "Crafty - Elapsed Time (sec)",LIB,517.85,463.93 "FLAC Audio Encoding - WAV To FLAC (sec)",LIB,50.29, "LAME MP3 Encoding - WAV To MP3 (sec)",LIB,110.59,92.63