topic Re: Add A second CPU,need i software configuration in Operating System - Linux

Add A second CPU,need i software configuration

John CLARK_5 — Thu, 02 Jun 2005 05:46:18 GMT

Hi,

I want to add a second CPU in my machine, and i wonder if after pluging the CPU i boot my machine
and it's ok (Like memory),or it needs a software configuration ?

Ps:I have Linux RedHat 4 ES with IBM xSeries.

Regards.
Thank's a lot.

Re: Add A second CPU,need i software configuration

Stuart Browne — Thu, 02 Jun 2005 05:50:17 GMT

Yea..

The only thing you'll need to do (software wise) is to ensure you're running an SMP kernel.

This should be available via up2date (or if you're not doing updates, on the distribution CD's).

Re: Add A second CPU,need i software configuration

John CLARK_5 — Thu, 02 Jun 2005 05:54:13 GMT

Thank you for your replay.

How can i check that i run SMP kernel?,can i check this by running a command?,if yes,please tell me about it.

Regards.

Re: Add A second CPU,need i software configuration

Stuart Browne — Thu, 02 Jun 2005 05:59:20 GMT

If you run 'uname -r', it will say clearly whether it's an SMP kernel or not.

Re: Add A second CPU,need i software configuration

John CLARK_5 — Thu, 02 Jun 2005 06:02:16 GMT

Ok,suppose i have up kernel,which package should i download or install from the Linux cds Package ?

Regards.

Re: Add A second CPU,need i software configuration

Stuart Browne — Thu, 02 Jun 2005 06:04:57 GMT

kernel-smp-*.rpm (where * is the kernel revision and archetecture).

If you use up2date, just 'up2date -i kernel-smp'.

Re: Add A second CPU,need i software configuration

Gopi Sekar — Thu, 02 Jun 2005 06:22:48 GMT

you have to install SMP kernel. if it is redhat then the package name would be kernel-smp-* install the package and reboot the system and on next reboot you should be able to see two entries in your boot loader.

First and default entry for SMP kernel and second for UP kernel. boot through SMP kernel and if it boots up fine and cat /proc/cpuinfo shows two processor then you are done. If it fails to boot through SMP kernel then try booting it through UP kernel and see whether that solves the problem.

no other packages need to be recompiled and you dont have to pay any extra license for adding one more CPU :)

Regards,
Gopi