====== CPUInfo ======

cpuinfo consists in an API/library used by programs to get information about the underlying CPU. Such information include CPU vendor, model name, cache hierarchy, and supported features (e.g. CMP, SMT, SIMD). ''cpuinfo'' is also a standalone program to demonstrate the use of this API.

The cpuinfo library is distributed under the terms of the [[http://www.gnu.org/copyleft/lgpl.html|GNU Lesser General Public License (LGPL)]].

**Last update:** [[#downloads|2007/07/15 -- Version 1.0-Pre R2]] (perl bindings, more features detected).

===== Supported platforms =====

cpuinfo has been built and tested on the following platforms:

^ CPU    ^ OS                 ^ Compilers                        ^
| i386   | Linux              | GCC >= 3.3.4, G++ >= 2.96        |
| i386   | NetBSD >= 2.0      | GCC >= 3.3.3                     |
| i386   | FreeBSD >= 5.3     | GCC >= 3.3.3                     |
| i386   | MacOS X >= 10.4.9  | GCC >= 4.0.1                     |
| x86_64 | Linux              | GCC >= 3.3.4                     |
| ia64   | Linux              | GCC 4.1                          |
| ia64   | HP-UX >= 11i v2    | HP C/aC++ A.06.14, GCC >= 3.4.3  |
| ia64   | FreeBSD >= 6.1     | GCC >= 3.4.4                     |
| ppc    | Linux              | GCC >= 3.4.3                     |
| ppc    | MacOS X >= 10.2.8  | GCC >= 3.1                       |
| mips   | IRIX >= 6.5        | MIPSpro >= 7.3.1.3 (C++), MIPSpro >= 7.4 (C), GCC >= 3.3 |

===== Downloads =====

  * {{downloads>common:cpuinfo:downloads#1}}

===== Documentation =====

The API is only documented in the ''cpuinfo.h'' file at this time. It currently contains features I am interested in but it may evolve in the future.

If cpuinfo behaves incorrectly, please send the output of <code>cpuinfo --debug</code> and any useful information to fix your problem (e.g. expected model name, correct cache information, etc.). Note that the much preferred way is to provide patches as well as this is a secondary/toy project. ;-)