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Folding FAQ - Everything you need to know in one location (for new and old folders!) - Page 137  

post #1361 of 1434
ok so what's folding again?
    
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post #1362 of 1434
Quote:
Originally Posted by Bloitz View Post

So far the tutorials have helped me a lot but I was hoping I could find more 'technical' information.
Stuff like:
RAM speed vs latency for folding
GPU folding: memory or core overclocking? or both?

Some example-rigs and their PPD perhaps? :
Energy-efficient folding rig: A rig which has the best power consumption/peformance ratio
'El cheapo' folding rig: Stuff you should look out for second hand that would give the best price/performace ratio

These are just some ideas I think could add to the already impressive knowledge base here on OCN.

Currently doing some folding myself on a 2500k @4.9 and a GTX570 @ 844/1688/1100(4400)/1.025 (=vcore) (OCCT and memtestG80 stable, heaven and 3dmark aren't stresstests IMHO) thumb.gif


That stuff is available, though you're much better off posting a fresh thread with those sorts of questions. Anyway, you're here now, so I'll answer. ;)

 

For RAM, speed and latency both improve performance; for normal SMP Folding, RAM has a rather small influence, so speed/latency doesn't make a huge difference. For -bigadv (more intensive Folding), speed would be the better option.

 

For GPU Folding, shaders are all that matter. Since shaders and core clocks are linked on Fermi, core is what you wanna increase. Feel free to lower the mem clock a bit to get a bit more out of your core, but don't lower it too much, or else you'll end up bottlenecking the GPU.

 

Energy-efficient rig? That would have to be a 4p G34 rig. I think Josh(Human) is getting over 1,000 PPD/W with that set up.

Cheapo rig? Anything with a quad core CPU or better, and a 9800GT or newer for GPU.
 

Quote:
Originally Posted by Kahunah View Post

ok so what's folding again?

You did read the OP, right? :P

 

If you didn't understand some of it, just point out which bit, and I'll try and clear it up for you if possible. :)

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post #1363 of 1434
the only thing i took away from the original post is that it's some kind of science experiment benefiting diseases. it sounds interesting but please expand on what it is. how it's done. why it's done.
    
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post #1364 of 1434

Ok, that's simple enough.

 

Essentially, Stanford University want to understand how proteins in our body "fold" (that is, how they re-arrange themselves into a functional shape). The reason for this is that when they fold incorrectly - "misfold" - it can lead to diseases such as those listed in the OP. To do this, they use computers to simulate the conditions required forcertain proteins to form in certain ways. By understanding what is required for a protein to form correctly, you know what to look for in the case of misfolded proteins. These simluations require a large amount of computing power, however. So, rather than get a massive super computer to calculate for them, instead they split up the project into small pieces, and send them out to donors to compute on their own computers, and send back.

 

There are a few reasons for that:

 

1) Much cheaper than getting a super-computer. :P

2) It's actually more powerful than most super computers (I believe only the Fujitsu K computer has a higher PFlops rating than the Folding@Home project).

3) It gives the chance for donors like us to get involved in the research.

 

To motive people to donate their computers, there is a points system; the faster you return a Work Unit (WU), the more points you get. And from that, teams were formed to compete with each other, and to push the project further and further forward.

 

Hope that explains things for you. :)

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post #1365 of 1434
how are your WU updated and kept track of? is it something you view on your computer and update? is it based on the honour system?
    
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post #1366 of 1434

It's done automatically. As the client finishes one WU, it uploades the results (at which point the server will award you points), and downloads a new WU.

 

The stats are then published, and can be found in sites like this:

http://folding.extremeoverclocking.com/user_summary.php?s=&u=425986

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post #1367 of 1434
sweet...maybe i will get involved in said project...sounds pretty cool!
    
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post #1368 of 1434
Hey....

Awsome stuff, now got over 50,000 credits......

Revolution996



thumb.gifthumb.gifthumb.gifthumb.gifthumb.gifthumb.gifbiggrin.gif
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post #1369 of 1434
Count me in! goatscapeable team 37726. Just finished my first WU. Took all night but I'm excited to be helping.
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post #1370 of 1434
Quote:
Originally Posted by goatscapeable View Post

Count me in! goatscapeable team 37726. Just finished my first WU. Took all night but I'm excited to be helping.

You should do small units first until you reach 10 WU then get yourself a passkey so you can get the bonuses thumb.gif
Until you hit 10 WU you don't get any bonuses so the points aren't that great (if you're in it for the points).
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