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F@H properly using Dual Core CPU?

post #1 of 13
10/10/09 at 5:46pm
Thread Starter 
Yo,

How can I ensure that Folding at Home is actually using both cores properly? I have an old P4 w/HyperThreading at home so it's not a big deal, but on my new PC it is an AMD Dual Core so if it has two physical cores i'd like to make sure i'm maximizing it's F@H-ness! There are FAQs on their site but most are not very helpful to me.... They ramble without just using plain english :-/
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post #2 of 13
10/10/09 at 5:54pm
Open task manager and look at CPU usage graphs
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post #3 of 13
10/10/09 at 6:10pm
Thread Starter 
Quote:
Originally Posted by iriverdude View Post
Open task manager and look at CPU usage graphs
Yeah thanks :P

I've never gotten it to use more than 50% (1 CPU affinity) this way and F@H won't let you open a second instance, so...
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post #4 of 13
10/10/09 at 6:29pm
im sure there used to be an option to set the number of cpus in use cant remember where as i uninstalled it years ago
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post #5 of 13
10/10/09 at 6:35pm
Thread Starter 
Quote:
Originally Posted by mark2410 View Post
im sure there used to be an option to set the number of cpus in use cant remember where as i uninstalled it years ago
Oh I see how it is, you want people to die of Huntington's and Cancer?

:P
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post #6 of 13
10/10/09 at 6:40pm
i just disliked changes that happened cant remember exactly what it was that bothered me but first it got removed from laptops then when reinstalling desktop one time i just never reinstalled it and never have since
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post #7 of 13
10/10/09 at 7:42pm
Quote:
Originally Posted by Sduibek View Post
Yeah thanks :P

I've never gotten it to use more than 50% (1 CPU affinity) this way and F@H won't let you open a second instance, so...
Actually, you NEED to open a separate instance for each core/processor. They just have to be in different directories and have their own unique IDs.
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post #8 of 13
10/10/09 at 7:53pm
Thread Starter 
Quote:
Originally Posted by Arainach View Post
Actually, you NEED to open a separate instance for each core/processor. They just have to be in different directories and have their own unique IDs.
Oooh!! Goodness. I didn't see that on the FAH site, but then maybe it's burried somewhere in the pages of randomness

Thanks dude!
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post #9 of 13
10/11/09 at 4:05pm
Thread Starter 
Okay, well i've got my P4 w/HT at home setup like this, basically i've got Program Files/Folding@Home and Program Files/FaH_cpu2 (within this i also renamed the subfolder to F@H2)

I have the drop-down under Settings -> far-right tab (don't remember name) set to Machine ID 1 and Machine ID 2 respectively. Both set to 100% CPU usage on the slider bar(s).

Only thing i'm unsure of, is the "Do NOT lock cores to specific CPU" check mark(s). Since i'm actually using both (virtual) CPU cores now, should I have these boxes checked or unchecked?

Thanks
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post #10 of 13
10/11/09 at 4:32pm
For it to use two cores you have to have some special version that I can't seem to remember the name of, but it's not the standard version... SMP that's what it's called.

When I was folding I used two linux virtual machines each using two cores and 1gb or so of ram with an SMP. They have SMP for windows as well.
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post #11 of 13
10/11/09 at 9:15pm
or just get the GPU version, it kills the cpu version in speed.
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post #12 of 13
10/11/09 at 11:44pm
Quote:
Originally Posted by craiglester View Post
or just get the GPU version, it kills the cpu version in speed.
Seeing as his computer is a P4 he might not have a graphics card new enough to use it. Not to mention the best thing to do is to use both the cpu and gpu version.

(Although personally I had a lot more lag issues with GPU2 than twin SMPs....)
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post #13 of 13
10/17/09 at 1:37pm
Thread Starter 
Quote:
Originally Posted by KONAKONA View Post
Seeing as his computer is a P4 he might not have a graphics card new enough to use it.
Bingo.
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