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ASM:Topology

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(Build the Program)
(Running x2topology)
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* ''Remark'': You may add your project directory to the executable PATH, or invoke x2topology with a '''./''' prefix (meaning in the current directory)
* ''Remark'': You may add your project directory to the executable PATH, or invoke x2topology with a '''./''' prefix (meaning in the current directory)
# Launch the script x2topology.sh which iterates through all the '''enabled''' Cores
# Launch the script x2topology.sh which iterates through all the '''enabled''' Cores
 +
<syntaxhighlight lang="bash">
./x2topology.sh
./x2topology.sh
 +
</syntaxhighlight>
* Using a Core i7, Nehalem architecture, Hyper-threading and 4 Cores enabled, it outputs:
* Using a Core i7, Nehalem architecture, Hyper-threading and 4 Cores enabled, it outputs:
<syntaxhighlight lang="text">
<syntaxhighlight lang="text">

Revision as of 10:07, 12 March 2014

Contents

ACPI Extended Topology

Building the Program

Prerequesites

Getting the Source Files

In the repository, download the following files in a project directory, such as x2topology

Build the Program

  • Compile the C source file
gcc x2topology.c -o x2topology
  • Give the executable permission to the downloaded Bash script
chmod +x x2topology.sh

Running x2topology

  • Remark: You may add your project directory to the executable PATH, or invoke x2topology with a ./ prefix (meaning in the current directory)
  1. Launch the script x2topology.sh which iterates through all the enabled Cores
./x2topology.sh
  • Using a Core i7, Nehalem architecture, Hyper-threading and 4 Cores enabled, it outputs:
OS      APIC    Thread  Core
0x1     0       0       0
0x2     2       0       1
0x4     4       0       2
0x8     6       0       3
0x10    1       1       0
0x20    3       1       1
0x40    5       1       2
0x80    7       1       3
  • Using a Core i7, Nehalem architecture, Hyper-threading disabled and 4 Cores enabled, it outputs:
OS      APIC    Thread  Core
0x1     0       0       0
0x2     2       0       1
0x4     4       0       2
0x8     6       0       3
0x10
0x20
0x40
0x80
  • Using a Core i7, Nehalem architecture, Hyper-threading disabled and only 1 Core enabled (3 Cores disabled), it outputs:
OS      APIC    Thread  Core
0x1     0       0       0
0x2
0x4
0x8
0x10
0x20
0x40
0x80
  1. x2topology, binary and shell script, can be lauched with a verbose option to get details:
./x2topology -v
./x2topology.sh -v
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