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From: Bert Wesarg (wesarg_at_[hidden])
Date: 2007-04-24 10:00:20


Hello,

On Mon, 23 Apr 2007, Bert Wesarg wrote:

> Hello all,
>
> Instructions:
>
> # assume you have mounted the sysfs on /sys
> $ cd /sys
> $ tar cjf cpu-topology.tar.bz2
> devices/system/{cpu/cpu*/topology/*,node/node*/cpu*}
Because of different kernel version, or old versions, not all files are
found, so here is an update to the instructions for getting the cpu
topology:

NOTE: the tar will spillout a bunch off messages like:

tar: devices/system/cpu/cpu0/topology/core_id: File shrank by 4094 bytes;
padding with zeros

this shouldn't be problem

0) change to your sysfs mount directory (mostly /sys)

1) if you don't have devices/system/cpu/cpu0/topology, sorry you can stop,
   your kernel is to old

2) if you don't have a devices/system/node directory, goto point 3). else
   do:

   $ tar -r -f /tmp/cpu-topology.tar devices/system/node/node*/cpu*

3) do:

   $ tar -r -f /tmp/cpu-topology.tar devices/system/cpu/cpu*/topology/*

4) do:

   $ bzip /tmp/cpu-topology.tar

Thank you

Bert Wesarg

>
> Please give a short description of the machine and send the
> cpu-topology.tar.bz2 to the list.
>
> [1]: http://www.open-mpi.org/community/lists/plpa-users/2007/04/0035.php
> [2]: http://www.open-mpi.org/software/plpa/
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