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P4 (Prescott) and SMP
- Thread starter capreppy
- Start date
Nope, won't do SMP. I'm not even sure the SMP client would run on a hyperthreaded CPU. For some reason I'm wanting to say that the SMP client can tell the difference between a "real" and "fake" core and wouldn't even start up. I could be very wrong about that.
But no, a P4 with hyperthreading will not run the SMP client. If my memory serves me correctly, some Pentium Ds would have a hard time meeting deadlines with the SMP client running at stock speeds. Plus, the power needed to run those whole house heaters might not be worth running unless it's the only thing you have. A Core2 based CPU at a much lower clock speed will outrun any P4 out there in regards to folding.
But no, a P4 with hyperthreading will not run the SMP client. If my memory serves me correctly, some Pentium Ds would have a hard time meeting deadlines with the SMP client running at stock speeds. Plus, the power needed to run those whole house heaters might not be worth running unless it's the only thing you have. A Core2 based CPU at a much lower clock speed will outrun any P4 out there in regards to folding.
I've never thought of that box as a whole house heater
I'm running the console client on it and it's making about 200 PPD. Is it worth even running that?
If it's what you have, then yes, it's worth running it. I was mainly speaking in regards to "farms" or "gardens". Basically, boxen built to do nothing other than fold. It's a lot more cost efficient to get a Core2 based system for folding than anything else right now.
All I know is the Preshott 2.8 I have at work loves to dump heat although it is one of the earlier ones I believe. However, the higher clocked Preshotts run very hot and it gets even worse when you stick two of them together such as the Pentium D. Yes, the Pentium Ds are technically not Preshotts, but they aren't exactly cool running processors either.
I personally don't worry too much about the PPD my machines put out. I have cheap electric and still have a P3 1Ghz and an AthlonXP 1700+ running. Until recently I also had a P3 800. It was retired as I needed the case and hard drives it was running with for the latest Q6600 box I built. I might get that P3 up and running again at a later time but I don't have a place for it right now, especially without a case.
I will say that other than my work system I don't run F@H on any single core systems. I have them switched over to WCG as they "seem" to be more productive on that project. The production out of my single core machines is dwarfed by my X2@3Ghz and it only does about 1368PPD with the SMP F@H client. I have the systems to run two different projects and I put the systems on the project where they seem to do the most good. Before too long I'm thinking of switching the X2 over to WCG as well since my Core2 based systems completely rape it for PPD.
That depends what you consider worth running. If you have a lot of other systems, shutting down an aging system based on a Prescott processor might not be a significant loss especially if power consumption is a major concern. If power usage is not a concern and you don't have many other systems, then it might be worth to keep it running. 200PPD is not insignificant if you are new to folding and want to build up some points.
If I ran SMP on my borged P4 650 with HT at work it would barely hit the deadlines from what I've read. It's 3.4 GHz with 2MB of cache which is like an Extreme Edition. The extra cache is what seems to make the difference. Unfortunately, I can't run SMP because I don't have admin rights to the computer.
I don't think a 1MB P4 has any chance.
I don't think a 1MB P4 has any chance.