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

Open64 Compiler Tuning On AMD Bulldozer FX-8150

Michael Larabel

Published on 2 November 2011
Written by Michael Larabel
Page 1 of 8 - 15 Comments

After recently comparing the AMD Bulldozer with the GCC, Open64, and LLVM/Clang compilers, in this article is a look at the performance of AMD's Open64 compiler when using their recommended compiler tuning options for Bulldozer when building software.

This article tests the various compiler options that AMD recommends as using for the CFLAGS/CXXFLAGS per their "Compiler Options Quick Reference Guide" for AMD Opteron Interlagos (Bulldozer) CPUs. AMD puts out the various optimizations in a very concise guide (this is a great example for those that have requested specific compiler tests in the past, where I have said to assemble a page on a Wiki or other documentation that details each recommended option for a particular environment).

In this article is just a look at AMD's recommended compiler options for the Open64 compiler.

The options tested included stock (not overriding any CFLAGS/CXXFLAGS and Open64 defaults to the -O2 optimization level), no optimizations (-O0), O1 local optimizations (-O1), O3 aggressive optimizations (-O3), bdver1 (Bulldozer optimizations for the march/mtune switches; -march=bdver1 -mtune=bdver1), auto-parallelization (-apo), huge pages (-HP). loop nest optimizations (-LNO:prefetch -LNO:prefetch_ahead), multi-core scalability (-mso), and LNO prefetch. Each of the C/C++ tests were re-installed before testing and built with the respective CFLAGS/CXXFLAGS set each time (using the force-install command from the Phoronix Test Suite). This article is not looking at the performance when pairing various compiler options together.

The AMD Open64 4.2.5.2 compiler was used from an Ubuntu 11.10 installation on the Linux 3.1 kernel from the AMD FX-8150 Eight-Core test system.

This article is just the second of several compiler test articles that are forthcoming from AMD's new Bulldozer platform.

<< Previous Page
1
Latest Linux Hardware Reviews
  1. A Walkthrough Of The New 32 System Open-Source Linux Benchmarking Test Farm
  2. Habey MITX-6771: Mini-ITX Board With Quad-Core J1900 Bay Trail
  3. OCZ Vector 150 SSD On Linux
  4. Noctua i4 CPU Cooler: Great For Cooling High-End LGA-2011v3 CPUs
Latest Linux Articles
  1. AMD Kaveri: Open-Source Radeon Gallium3D vs. Catalyst 14.12 Omega Driver
  2. 12-Way AMD Catalyst 14.12 vs. NVIDIA 346 Series Linux GPU Comparison
  3. AMD Catalyst 14.12 Omega Driver Brings Mixed Results For Linux Users
  4. 6-Way Winter 2014 Linux Distribution Comparison
Latest Linux News
  1. Linux 3.19-rc1 Kernel Released Ahead Of Schedule
  2. Civilization: Beyond Earth Linux GPU/Driver Benchmarks
  3. X.Org Server 1.16.3 Released To Fix Security Issues
  4. Linux 3.19 Merge Window Closes Ahead Of Schedule
  5. MIPS R6 Architecture Now Supported By GCC
  6. LowRISC To Feature Tagged Memory & Minion Cores
  7. Intel Skylake Audio Support For Linux 3.19
  8. After 10+ Years, NetworkManager Reaches v1.0
  9. VDPAU Updated To v0.9
  10. An Open Hardware Random Number Generator Proposed
Latest Forum Discussions
  1. FPS capped on Linux (AMD fglrx drivers)
  2. Need some hand holding with upgrading xserver
  3. Are there an app using HSA ?
  4. The New SuperTuxKart Looks Better, But Can Cause GPU/Driver Problems
  5. XLennart: A Game For Systemd Haters With Nothing Better To Do
  6. Updated and Optimized Ubuntu Free Graphics Drivers
  7. Debian init discussion in Phoenix Wright format
  8. Bench specific mount point