HT WU times

[axlecrusher]

Why is this thread completly empty? Why did it automaticly go to the reply post page when accessing the thread?

[Bobby]

There's been a few of them. I was waiting to see if this one showed up before posting another one. You beat me to it :p


I just set up another P4 1.6ghz to join the fold and was checking out my stats and I see that this Geophyte character (you here Geophyte? :)) passed me but not by much. So for the sake of friendly competition, I wanted to run a 2nd instance on my HT computer. I set up 2 instances of FAH3Console on my HT P4. It's not a problem running them but the time it takes to complete a WU seems really long.

On a 50ish pt WU, my computer usually takes 14hrs to complete but now it's taking over 25hrs. A 30ish pt WU usually takes 7hrs but it's taking over 14hrs. Does this sound right?

Any suggestions would be greatly appreciated :D

TIA,

-Bobby

[sangapski]

i noticed the same thing
it almost double the time to finish a WU when running 2 instances of F@H...

[nahmus]

With HT you can only get 50% of the CPU unless you disable HT. The times are longer but you are doing 2 at once. Some here did a comparison and the times/points are just a little slower doing 2 at once with HT than having HT turned off and doing one at a time.

I have a dual2.0 XEON server running 4 F@H and the times are a little more than double.

[Bobby]

I'm trying to figure out which would be better. I leave HT on and it seems like it's a bit faster with only one instance running over 2 instances. Times to complete each WU can take more than double what it would be if I only run 1 instance.

-Bobby

[nahmus]

hmmm even if i run 1 instance on my dullie it still only takes 25% of the CPU. thats why I'm running 4. Maybe something different happens in a dual HT setup. I don't have a p4HT to test on.