Ultimate Guide To Folding@home

As of client 4.0 there is a new switch: -forceSSE

Quote from: http://www.broadbandreports.com/forum/rema...22116~mode=flat
With an AMD processor, -forceSSE forces SSE on, -forceasm forces 3DNOW on and if you don't code either, you run with just normal processing. -forceSSE = fast, -forceasm = slower and no switch = very slow.
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Quote from: http://www.broadbandreports.com/forum/rema...29493~mode=flat
The -forceSSE switch forces an AMD processor to use its SSE optimizations. Use this switch only if SSE optimizations work well for you. If running the client under SSE optimizations causes too many problems, then switch to -forceasm, which will force 3DNow optimizations on an AMD processor. Seldom do AMDs have problems with 3DNow, but some do have trouble with SSE.
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Quote from: http://forum.folding-community.org/viewtopic.php?t=6170
The assembly optimization for SSE is the code that occasionally pushes many AMD machines into unstable conditions. The parameter -forceSSE simply gives those who have demonstrated their machines are stable with SSE operations to regain the extra 15% speed boost that they had before the default was changed to 3DNow optimizations.

There are 3 types of code in the PC version of Gromacs: Unoptimized, 3DNow+, and SSE. How you invoke them was changed depending on the flags and the client version, but the fundamental code is still the same.
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So, with the newer AMD CPUs you could use:

-advmethods -forceSSE


Fold on ! :)
 
A WU is a work Unit. You have a tinker work unit and it will take you up to 4 days to complete. After you have completed it, it will be uploaded to the server and after a short time your name will appear among the team members names on the team page here http://vspx27.stanford.edu/cgi-bin/main.py...e&teamnum=34905 Your score will be added to the team's score. Each work unit that you complete will be added to your name. Please read the guide at the beginning of this thread for more information... oh and welcome and thanks for joining our team!!! :)
 
Hey hey.

I was browsing about my bisnes about Linuxes etcetera and stumbled
on this site.
I have no problem with this, just wondering how many projects is out there,
similar to Folding.
Must be few since SETI has been around for some time too.

Anyways, happy folding. Or Merry. Or Joyly. Or what suits ya.

:)
 
You've only got one processor, but some parts of it are duplicated. These are the simpler components which don't produce much heat, such as the main instruction path, the arithmetic unit etc.

It has to report that it has 2 processors so that windows can schedule it to execute 2 tasks simultaneously. That effectively means that with two tasks which for the most part only use the duplicated parts you can get more performance out of the chip.

Unfortunately F@H mainly uses parts which aren't duplicated - the MME stuff and the FPU. These are complex units and produce large amounts of heat, which is why they aren't duplicated. So although you could have 2 copies of the program scheduled to run, in practice they would be waiting for the shared resources to be free.

There's even a down side to HT when you want to run another program, even with only one copy running. Windows sees that it has a spare "processor" which can run your prog, it doesn't know about the shared resources. So windows schedules your prog and doesn't bother interrupting the other FPU/MME intensive prog. If your prog uses the duplicated parts there's no problem, but if it uses the shared parts then it runs like a dog.

Nice one Intel - how to slow down our systems by not thinking out the problem. Nothing new there then. :dry:
 
Originally posted by Livy@21 March 2004 - 02:29
kinda got started on a page for the team, i knwo theres nothign really on it, but what about the layout etc? and also what you would like on the page.

http://www.livy.myby.co.uk/folding/
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OK as a start.

I think it would be better to give a link to the F@H downloads page for downloads rather than host it. That way it will always provide a link to the latest version, and provide the versions for linux and Mac too.

Spell and grammar check on the about page might be useful. :-"
 
Originally posted by lynx@5 February 2004 - 21:54
2nd cpu now up and running - 1700XP running linux.

Started installation less than 2 hours ago and I'm using it's web browser now. :)
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That will get me slipping back down the list...well I enjoyed being 6th even though it was for a very short time... :D
 
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