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Need help using my dual core for folding - Page 2

post #11 of 19
With identical WUs, each core will produce very similar results. There will be some variation as one or both of the cores still handle all of the other tasks necessary to keep your system running. A dual core CPU will be of a minimal benefit while running a single instance of the program (assuming nothing much else is going on; if the computer is pushed hard, the second core could pick up some or all of the slack) as the folding software is currenly single threaded. Future versions of the software may take direct advantage of multiple cores/CPUs.
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post #12 of 19
ok step by step instructions to fold 100% with HT, Duel Cores, and EE.
1) download consol version here.
2) create 2 new folders and name them differant names. see image 1.
3) place F@H file in BOTH folders. name them 1 and 2 or something like that to make iding easier later. see image 2.
4) make a short cut of BOTH F@H files. image 3
5) Right-click the first short cut. go to properties. click shortcut tab. in the target field you see "c:\\????\\???\\folding file.exe" type "-config" after that. not in the "s and one space after the last " mark. so it looks like "c:\\????\\???\\folding file.exe" -config see image 4. repeat for each shortcut made.
6) double click first short cut. enter info. ok it gets to advanced settings type yes y. keep going and it gets to "machine id" type 1 for the first short cut 2 for the second and so on. image 4.
7) ok heres the tricky part. to run the program after the first setup run, use the F@H file that you first put in the folding folder. you have to run each file for each core or machine id. so core 1 is folding 1 start the folding 1 file. core two is folding file 2 start the folding 2 file. and so on. you can run up too 8 files at once but anything more then 100% cpu usage is kinda pointless. one file for single core none HT. 2 for duel and HT. 4 for 955EE and the fx-60 i think. dont know amds stuff.

p.s. i did know know pc probe gave cpu usage specs. i use crtl+alt+del and the performance tab. image 5




    
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post #13 of 19
Quote:
Originally Posted by Taeric
A dual core CPU will be of a minimal benefit while running a single instance of the program (assuming nothing much else is going on; if the computer is pushed hard, the second core could pick up some or all of the slack) as the folding software is currenly single threaded. Future versions of the software may take direct advantage of multiple cores/CPUs.

So if what you are saying is true, and only one of my cores is working the folding program, how come with my system idle both cores are loaded 100%? What's the other core doing? When I close the program my CPU usage drops to 0% with an occasional spike to 10% or so on one of them for background programs. The second I start folding@home, they peg at 100% and stay there, both of them.



If I have time this weekend I will give this a shot......
post #14 of 19
Stanford states that the folding software is single threaded, and they should know best since they wrote it.

Not having a dual core myself, I can't fiddle around with it to try to replicate the results you're getting. Please post back when you have a chance to run through things. Is there any chance there's a BIOS option to disable the second core? It would be interesting to run the system with just one core to definitively verify that the second core isn't contributing beyond running background tasks.
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post #15 of 19
Well, I played around a little and here's what I found.


#1, I followed the instructions for running 2 applications exactly, it appeared to be working (except it never asked for machine ID). Once I had one running i went through the same process for the other, but at the end of the options when it should have started, the second window just dissapeared.


BUT

I did find this. Remember how I said my CPU usage showed both cored working 100% while folding with the graphical console? Well, with a single text only running, it clearly showed that only one core was working at 100%, the other was idling at 5% or less.



Perhaps the text only is single threaded? Maybe they unknowingly wrote the graphical one in such a way where both cores can work together? Either way, I do like the graphical console better anyway.
post #16 of 19
Thread Starter 
Quote:
Originally Posted by Thumper
Well, I played around a little and here's what I found.


#1, I followed the instructions for running 2 applications exactly, it appeared to be working (except it never asked for machine ID). Once I had one running i went through the same process for the other, but at the end of the options when it should have started, the second window just dissapeared.


BUT

I did find this. Remember how I said my CPU usage showed both cored working 100% while folding with the graphical console? Well, with a single text only running, it clearly showed that only one core was working at 100%, the other was idling at 5% or less.



Perhaps the text only is single threaded? Maybe they unknowingly wrote the graphical one in such a way where both cores can work together? Either way, I do like the graphical console better anyway.

mine only uses 1 core it never uses more than 50%
post #17 of 19
Hhmmmmm

I'll take screenshots tonight just to what I'm saying



Maybe my system is reading wrong.....but the temp changes too. Running the graphical console with both cores at 100% it sits at 56-57c (with the side panel off, stupid case airflow), but with the text only version running and only 1 core shown working 100% it loads at 50-51c. My idle is 45 BTW. And when I run dual Prime95s with both cores at 100% the temps are 56-57c also......


So for it to be wrong, a LOT of sensors have to be malfunctioning. I just don't see that as likely. AIBooster, PC Probe 2, and Speedfan all confirm the temps and core loads.
post #18 of 19
You will also need to set the cpu "affinity" in the task manager for it to run properly on a dual core. Setting the "graphic' version's affinity will force it to run off 1 core only, otherwise by default it will use 100% cpu available. The "console" version will use 1 core only by default showing as 50% cpu usage.
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post #19 of 19
Quote:
Originally Posted by busa
You will also need to set the cpu "affinity" in the task manager for it to run properly on a dual core. Setting the "graphic' version's affinity will force it to run off 1 core only, otherwise by default it will use 100% cpu available. The "console" version will use 1 core only by default showing as 50% cpu usage.

Right, so the graphical program is using 100% of both my cores. I like the look of the graphical, I like the detailed status info on how the computations are coming along, and it uses both my cores, so I'm gonna stick with it.

I didn't get to take screenshots (been really swamped with projects at home, getting ready to move) but I am confident that when it says both cores are loaded at 100%, that they are. And that there is nothing else the second core can be doing OTHER than folding. I've been folding for about a week IIRC, and I am due to finish my 6th WU today, and that's NOT running 24/7. I did 2 Amber 500 frame WUs, and 3 Gromac 10000 frame WUs and almost finished with another Amber 500 frame WU....the Ambers are about 2-3 minute per frame and the Gromacs were about 12-13sec per frame.

I would recomend that anyone running a dual core download the graphical program and see if they have similar results.
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