1. Computers
  2. Display Drivers
  3. Graphics Cards
  4. Memory
  5. Motherboards
  6. Processors
  7. Software
  8. Storage
  9. Operating Systems


Facebook RSS Twitter Twitter Google Plus


Phoronix Test Suite

OpenBenchmarking.org

Optimized Binaries Provide Great Benefits For Intel Haswell

Michael Larabel

Published on 15 June 2013
Written by Michael Larabel
Page 1 of 4 - 9 Comments

Utilizing the core-avx2 CPU optimizations offered by the GCC 4.8 compiler can provide real benefits for the Intel Core i7 4770K processor and other new "Haswell" CPUs. For some computational workloads, the new Haswell instruction set extensions can offer tremendous speed-ups compared to what's offered by the previous-generation Ivy Bridge CPUs.

With our source-based benchmarks to date of Haswell, we have been using the -march=native compiler flag that effectively means -march=core-avx2 but we haven't looked specifically at the benefits provided by Haswell CPUs introducing support for AVX2, FMA, BMI, and BMI2. This is also particularly interesting since on the Windows side, most of the benchmarking that happens at the other review sites is done using generic pre-compiled binaries rather than building from source with optimizations for a given architecture.

For those unfamiliar with the GCC x86/x86_64 optimization options, read the online GCC documentation. The new core-avx2 option means "Intel Core CPU with 64-bit extensions, MOVBE, MMX, SSE, SSE2, SSE3, SSSE3, SSE4.1, SSE4.2, AVX, AVX2, AES, PCLMUL, FSGSBASE, RDRND, FMA, BMI, BMI2 and F16C instruction set support."

The other tested options were Nocona (the old Xeons), Core2 (the original Intel Core CPUs with SSE3 support), Corei7 (Ironlake), Corei7-avx (Sandy Bridge), and Core-avx-i (Ivy Bridge). Again, the GCC documentation explains what instruction sets are offered by each of these different Intel CPU models.

Results in full are on OpenBenchmarking.org in 1306150-PTS-INTELHAS05. The Core i7 4770K Haswell system was running Ubuntu 13.04 with the Linux 3.10 development kernel and GCC 4.8.1 was built from source. The various compiler options were set via the CFLAGS and CXXFLAGS environment variables along with passing -O3 for the most aggressive compiler optimizations.

<< Previous Page
1
Latest Linux Hardware Reviews
  1. AMD Radeon R9 290: Gallium3D vs. Catalyst Drivers
  2. AMD Radeon R9 290 Open-Source Driver Works, But Has A Ways To Go
  3. Trying The Configurable 45 Watt TDP With AMD's A10-7800 / A6-7400K
  4. Sumo's Omni Gets Reloaded
Latest Linux Articles
  1. The Most Energy Efficient Radeon GPU For AMD Linux Gaming
  2. 20-Way Radeon Comparison With Open-Source Graphics For Steam On Linux Gaming
  3. Preview: OS X 10.10 Yosemite vs. Ubuntu Linux GPU Performance
  4. Radeon Graphics Yield Mixed Results With Linux 3.17 Kernel
Latest Linux News
  1. Ubuntu's Utopic Unicorn 14.10 Beta 1 Released
  2. Genode OS 14.08 Has New GUI Architecture, Pluggable VFS
  3. Another Intel Linux Power Regression Is Being Investigated
  4. DNF Makes It A Step Closer To Replacing Yum On Fedora
  5. OS Battle: Linux Takes 1.7% Desktop Marketshare
  6. PHP 5.6 Officially Released With New Debugger
  7. LibreOffice 4.3.1 Released
  8. Re-Clocking Your NVIDIA GPU With Nouveau On Linux 3.17
  9. Radeon DRM Queues More Changes, RV6xx UVD For Linux 3.18
  10. Metro 2033 Redux Will Hopefully Hit Linux Real Soon
Latest Forum Discussions
  1. Users defect to Linux as OpenBSD removes Lynx from base system
  2. Best Radeon for a Power Mac G5?
  3. Canonical Joined The Khronos Group To Help Mir/Wayland Drivers
  4. OC capability - Intel Core i5 4690K & Biostar Hi-Fi Z97WE
  5. Updated and Optimized Ubuntu Free Graphics Drivers
  6. AMD Releases UVD Video Decode Support For R600 GPUs
  7. Announcing radeontop, a tool for viewing the GPU usage
  8. It's Now Possible To Play Netflix Natively On Linux Without Wine Plug-Ins