Re: [OMPI users] How do I run OpenMPI safely on a Nehalem standalone machine?

[Tim Prince]

On 5/9/2010 8:45 PM, Terry Frankcombe wrote:
   
I don't know what Jeff meant by that, but we haven't seen a feasible way
of disabling HT without rebooting and using the BIOS options.
     
According to this page:
http://dag.wieers.com/blog/is-hyper-threading-enabled-on-a-linux-system
in RHEL5/CentOS-5 it's easy to switch it on and off on the fly.
_______________________________________________
   
That's the same as Jeff explained.  It requires root privilege, and 
affects all users.

--
Tim  Prince