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Re: [Condor-users] 7.0.1 still doesn't fully detect hyperthreadingWintel nodes?
- Date: Mon, 7 Apr 2008 16:05:31 +0100
- From: "Kewley, J (John)" <j.kewley@xxxxxxxx>
- Subject: Re: [Condor-users] 7.0.1 still doesn't fully detect hyperthreadingWintel nodes?
> I upgraded to 7.0.1 over the weekend from 6.8.x in the hopes of better
> detection of hyperthreading on SMP machines. We have a number of
> two-cpu Wintel boxes that have hyperthreading turned on. Under 6.8.x
> Condor thought each hyperthreaded cpu was two VMs, so those boxes ended
> up with 4 VMs. Condor 7.0.1 has the new Slot terminology and coding,
> but it still thinks a hyperthreaded cpu is two separate slots.
You had: A 2-cpu machine with HT
You got: 4 VMs
You now have: A 2-cpu machine with HT
You get: 2x 2 slots = 4 slots
Is that what you said? If so, this is what I would expect it to
give unless you turned off HT recognition within
COUNT_HYPERTHREAD_CPUS = FALSE
How many slots were you expecting?
How many do you want?
> Our condor_config files have handled this problem for years, but I was
> hoping to remove a lot of the kluges we used. Is there something else I
> need to do with 7.0.1 to have the hyperthreaded machines properly
> detected?
That depends what you mean by properly:
How many slots were you expecting?
How many do you want?
Cheers
JK