20+ day Work units

[flogge]

I have my P4 in my sig rig running the notfred CD in hyperthreading mode. Almost 3 weeks ago it started on a pair of work units that are rather long-running. i checked this morning and they were at 90% complete after about 18 days of running. I'll check this evening and get the project number

After these finish should I turn off hyperthreading? I tried turning it off once and it would not finish a work unit. I think that was another problem but I'm not sure. Does hyperthreading hurt or help the output on these first attempts at virtual cores?

 

[Xilikon]

Hyperthreading could hurt some units and the majority would tell you to disable it. The ppd gain is 15% max and can be wiped if you get over the deadlines

 

[Razor_FX_II]

I have a P4 630 (SL7Z9) 3.0ghz clocked to 4.0ghz and have ran unicore and smp units under Vista x86 on it.
I tried turning off HT for a bit and noticed a drop in PPD about 15-20%.
I no longer run units on it since I have it busy serving up GPU clients but I decided the best PPD came from having HT on.
That was my experience with it. Don't know if that helps.