How to use SSE with AMD!!!!!

Kendan · May 10, 2003

Only do this if you are gromacs stable and if you become unstable or lose a workunit then just remove the -forceasm flag

Stanford changed things up because of some stability issues. Please do this to get the most points from your AMD rigs. I know it is a PITA but we need every point we can get to catch OCAU. Fold on!!!!!

Correct procedure for using SSE on an AMD rig as of right this minute. This is for the Text only console client and the graphical client. Just download the corresponding Beta client. There is no need to uninstall first.

1. Get the beta client from here: http://folding.stanford.edu/beta/beta.html

2. Stop the client

4. Rename the new beta client 3.25 to replace the one that is there now. (example: you have fah.exe and the beta is betafah.exe you rename betafah.exe to fah.exe and replace the old with the new beta)

5. Delete FAH_core78.exe

6. Make sure you are using the -advmethods and the -forceasm flags (the Forceasm flag is the one turning on SSE now)

7. Restart the client

Here is a good thread on Gromacs and an explanation of how to set the flags

http://forum.oc-forums.com/vb/showthread.php?s=&threadid=130328&highlight=groma*

SniperXX · May 10, 2003

Sweet thanks!

Ben721 · May 10, 2003

Alright Kendan the folding n00b has some questions:

1) How beneficial is this?
2) Is it worth doing?
3) Can I do this while in the middle of a wu?
4) Do I still type this in the startup folder under target in F@H:"C:\Program Files\Folding@Home\winFAH.exe" -advmethods -forceasm

emericanchaos · May 10, 2003

yeah this is what i just posted about. d/l the new beta and replace the old winFAH.exe with the beta.

Kendan · May 10, 2003

Ben721 said:
Alright Kendan the folding n00b has some questions:

1) How beneficial is this?
2) Is it worth doing?
3) Can I do this while in the middle of a wu?
4) Do I still type this in the startup folder under target in F@H:"C:\Program Files\Folding@Home\winFAH.exe" -advmethods -forceasm

1. I have not tested the 3Dnow boost. But SSE speeds things up a lot

2. Yes

3. Yes you can do it in the middle of a Work Unit

4. Yes

filip04 · May 10, 2003

4. Rename the new beta client 3.25 to replace the one there now.

stuck.. i don't know what you mean

edit:

do just download the exe and replace the old one?

emericanchaos · May 10, 2003

yeah download the new one into your f@h directory. sutdown the client and delete winFAH.exe than rename the beta file to winFAH

Kendan · May 10, 2003

What emericanchaos said

I edited the original with an example

Edward2 · May 10, 2003

Thanks for the updated info!! It was a PITA to have to restart the client every time a new WU was started (to turn on SSE again).

Ben721 · May 10, 2003

Alright thanks Kendan, it took me like 5 minutes but I did it.

I can't wait to see the results.

filip04 · May 10, 2003

took me 5 mins, but saved me a lot on proteins

john240sx · May 10, 2003

WOW! this shaved 1 minute off my P909 frame time

teh sweetness

OCn00b · May 10, 2003

I just uninstalled the 3.24 version and started using the 3.25 beta and so far things have been fine. I didn't rename any files but my frame times are good. Do I still need to rename the beta to winfah.exe?

Kendan · May 10, 2003

OCn00b said:
I just uninstalled the 3.24 version and started using the 3.25 beta and so far things have been fine. I didn't rename any files but my frame times are good. Do I still need to rename the beta to winfah.exe?

Not if you uninstalled and reinstalled the Beta but you still need the flags

OCn00b · May 10, 2003

Cool, I'm still using the flags. Does the new client/core only affect the new gromacs or should we see improvements on all the gromacs?

rbrodka · May 10, 2003

Thanks Kendan.

I run the Windows Console (text) version.
I downloaded FAH3.25-Console-beta.exe from the site Kendan supplied above.
I stopped my current client in the middle of a WU.
I deleted the FAH3Console.exe client program.
I renamed FAH3.25-Console-beta.exe to FAH3Console.exe to replace the one I just deleted.
I deleted the FahCore_78.exe core program.
I then restarted the FAH client....
It downloaded a new core.
I got the "Extra SSE boost OK." message.
The client picked up working where it left off.

Took me just a couple of minutes.

7:12 per frame - old client on p909_vill_str0
6:08 per frame - new client on p909_vill_str0

1:04 per frame improvement
14.81% speed improvement

AMD XP2400+ (not overclocked)

bubba gump · May 10, 2003

So this even works for the few who use the graphical client (like ben, coz winFAH.exe i think is the graphical one =D) Im just wondering coz u know...in case of anyone esle wondering..and i like to clarify things that do not apply to me

'Bump

*edit* and u just answered my question

*/edit*

Kendan · May 10, 2003

bubba gump said:
So this even works for the few who use the graphical client (like ben, coz winFAH.exe i think is the graphical one =D) Im just wondering coz u know...in case of anyone esle wondering..and i like to clarify things that do not apply to me

'Bump

*edit* and u just answered my question */edit*

Yes it will work just download the graphical from the link I linked

I do not use the graphical anymore. Sorry for the confusion. I will edit the first post

Ben721 · May 10, 2003

Where do I look for the "Extra SSE boost OK." message?

Kendan · May 10, 2003

Ben721 said:
Where do I look for the "Extra SSE boost OK." message?

In the FAHlog.txt

Or in the console if you are using the Console version.

How to use SSE with AMD!!!!!

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