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Subject: Re: [OMPI users] How do I run OpenMPI safely on a Nehalem standalone machine?
From: Tim Prince (n8tm_at_[hidden])
Date: 2010-05-10 01:07:13


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