New GPU´s Could make SETI FASTER!!!!!

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Message 79699 - Posted: 15 Feb 2005, 22:18:28 UTC
Last modified: 15 Feb 2005, 22:50:19 UTC

Taking Adtantig of the graphic card power will be interesting.
Take a look at this
http://www.tomshardware.com/hardnews/20040902_135943.html
http://www.extremetech.com/article2/0,1558,1642832,00.asp?kc=ETRSS02129TX1K0000532
It can help since seti is much of sound analizang

http://www.bionicfx.com/
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Message 83386 - Posted: 3 Mar 2005, 0:51:39 UTC

No news about the subject?
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Message 83405 - Posted: 3 Mar 2005, 18:04:54 UTC

turn the URLs into links... as most are too lazy to copy and paste.
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Message 83406 - Posted: 3 Mar 2005, 18:09:20 UTC - in response to Message 79699.  

> Taking Adtantig of the graphic card power will be interesting.
> Take a look at this
> http://www.tomshardware.com/hardnews/20040902_135943.html
>
> http://www.extremetech.com/article2/0,1558,1642832,00.asp?kc=ETRSS02129TX1K0000532
> It can help since seti is much of sound analizang
>
> http://www.bionicfx.com/

The big question is: how many people would have graphic cards that are faster than their CPUs -- and how much work would be involved in trying to use them.
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Message 83416 - Posted: 3 Mar 2005, 18:39:26 UTC
Last modified: 3 Mar 2005, 18:39:42 UTC

There is some discussion of this at the open source setiboinc development site.
Astropulse code already has some GPU code in it.

Discussion of GPU usage

...and another




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Message 83725 - Posted: 8 Mar 2005, 1:17:31 UTC - in response to Message 83416.  

You mean, faster for those that run the screensaver part, and not for those that run the client only. Yes?

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Message 83735 - Posted: 8 Mar 2005, 2:05:05 UTC - in response to Message 83725.  

> You mean, faster for those that run the screensaver part, and not for those
> that run the client only. Yes?


No,

GPU = graphics Processor.

Latest few revisions of NVidia and ATI chips both have floating point engine built into the GPU. And people have already written some advanced math routines that can run on the chip in the chip/board's memory.

So, for these the regular CPU would be doing one WU, and the GPU would be crunching another WU.
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Message 83754 - Posted: 8 Mar 2005, 3:14:44 UTC

I'm not an expert on this, but I've heard that the memory speed is too slow, PCI Express might solve this problem, but I dont know how many people do have it, and if this would be worth it. I personally have an pretty fast graphics card, but it doesnt go any higher than 350MHz stable after overclocking it....
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Message 83764 - Posted: 8 Mar 2005, 3:39:13 UTC - in response to Message 83754.  
Last modified: 8 Mar 2005, 3:41:42 UTC

I read the links above, very interesting.
Like it says there, it's more for the music processing bunch of folk for now, but they do mention Seti.
- Audio software is like 25 000$ they say, and this software would be under 1 000$
- PCI Express is new and not many would have it, and the cards can be over 1 000$. But next to 25 000$, it is a big gain plus,
- Apparently the GPU can do things that the cpu just can't!
-- like 40 G flops instead of 5

Too bad ATI isn't in the picture, anywho, I don't have a new ATI. :P lol
- ATI was the only thing that ran well with my AMD when I was buying.

Edit:
There they say it is the transfer-back speed that slows things.


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Message 85798 - Posted: 13 Mar 2005, 21:09:36 UTC

>I'm not an expert on this, but I've heard that the memory speed is too slow, PCI Express might solve this problem, but I dont know how many people do have it, and if this would be worth it. I personally have an pretty fast graphics card, but it doesnt go any higher than 350MHz stable after overclocking it....

Yes that indeed is right, the bus between GPU and CPU is too slow. But!!
If the code is in GPU Ram and the data is in the GPU Ram, then!!!

Imagine a sparking brand new 6800Ultra or ATI.. These bad boys have aprox 35-40 GigaByte/Sec in ramspeed compared to about 6 GigaByte/S in a dual channel machine today!!

If the code is gpu active and executed in a backbuffer on the graphicscard you can work with windows without even knowing that the GPU is in 100% state buzy running SETI :)


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Message 86671 - Posted: 16 Mar 2005, 20:28:41 UTC - in response to Message 85798.  

> >I'm not an expert on this, but I've heard that the memory speed is too
> slow, PCI Express might solve this problem, but I dont know how many people do
> have it, and if this would be worth it. I personally have an pretty fast
> graphics card, but it doesnt go any higher than 350MHz stable after
> overclocking it....
>
> Yes that indeed is right, the bus between GPU and CPU is too slow. But!!
> If the code is in GPU Ram and the data is in the GPU Ram, then!!!
>
> Imagine a sparking brand new 6800Ultra or ATI.. These bad boys have aprox
> 35-40 GigaByte/Sec in ramspeed compared to about 6 GigaByte/S in a dual
> channel machine today!!
>
> If the code is gpu active and executed in a backbuffer on the graphicscard you
> can work with windows without even knowing that the GPU is in 100% state buzy
> running SETI :)
>
>
Thats what I thought when they told me that... but now, the core speed is even slower than my first PC...
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Message 86717 - Posted: 16 Mar 2005, 22:24:11 UTC - in response to Message 86671.  

> > >I'm not an expert on this, but I've heard that the memory speed is
> too
> > slow, PCI Express might solve this problem, but I dont know how many
> people do
> > have it, and if this would be worth it. I personally have an pretty fast
> > graphics card, but it doesnt go any higher than 350MHz stable after
> > overclocking it....
> >
> > Yes that indeed is right, the bus between GPU and CPU is too slow. But!!
> > If the code is in GPU Ram and the data is in the GPU Ram, then!!!
> >
> > Imagine a sparking brand new 6800Ultra or ATI.. These bad boys have
> aprox
> > 35-40 GigaByte/Sec in ramspeed compared to about 6 GigaByte/S in a dual
> > channel machine today!!
> >
> > If the code is gpu active and executed in a backbuffer on the
> graphicscard you
> > can work with windows without even knowing that the GPU is in 100% state
> buzy
> > running SETI :)
> >
> >
> Thats what I thought when they told me that... but now, the core speed is even
> slower than my first PC...
>

Yes i know that it is but does a modern CPU even have sixteen different shader processors, no but they do have 2 or even 3 pipes of FPU power..

I don't hardly believe that they could do everything but if the cpu and the gpu do different types of operations i really think that it could match up working side by side.. Imagine effecient code that the cpu tells that the gpu should calculate different aspects in the frequency side by side by chunks of sixteen then it could make sense..



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Message 97108 - Posted: 10 Apr 2005, 19:03:01 UTC

Ok.
We know it coul help.
What does seti developer think about this
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Message 97369 - Posted: 11 Apr 2005, 4:21:49 UTC - in response to Message 97108.  
Last modified: 11 Apr 2005, 4:22:22 UTC

> Ok.
> We know it coul help.
> What does seti developer think about this

Theres really only one main "seti" developer...Eric Korpela.

David Anderson and others helped in developing parts of seti science code but Eric did most of it, or now manages most of it, and now he can only dedicate 25% of his employed time to seti. David, Rom, Matt and the rest all work mostly on BOINC now.

So, there is a public website for improving seti science code. Developers can ask to join and contribute to the code.

There is a discussion thread on its forums about using GPU with seti, and some GPU source code already for the "Astropulse" program.

Have a look around.
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Message boards : Number crunching : New GPU´s Could make SETI FASTER!!!!!


 
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