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Old 2011-03-09, 03:21   #1
Christenson
 
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Default Cuda on GEForce 210?

For reasons unrelated to Gimps, (my flat panel at work died, I wanted an upgrade to dual monitors) I purchased a GEForce 210 card with 512 Meg of RAM. Yeah, not a lot compared to the higher end 460s and such. I was wondering
a) what is the best type of GIMPS work to put it to, assuming I don't want the GIMPS part loading down the Pentium IV host,
b) Is it worth asking it to trial factor (or even P-1 factor) my favorite unfactored small mersenne number, 2^1061-1 ?, and if so, how would I do it? (or maybe I should be looking at other exponents under 10K, since NFS@home and I might get into a race condition).

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Old 2011-03-09, 03:56   #2
pegaso56
 
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Hi, i´m using Nvidia 210 GT for TF to lower limits. Results are regular. 1 exponent checked 64 to 65 bits/7min, doing the same with a 955 BE overclocked it´s around 10 minutes per exponent.
Best regards, Carlos
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Old 2011-03-09, 07:13   #3
debrouxl
 
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Quote:
b) Is it worth asking it to trial factor (or even P-1 factor) my favorite unfactored small mersenne number, 2^1061-1 ?
AFAICT, 2^1061-1 is nearing the point where it's considered ready for NFS - if it's not there already - after a large amount of ECM work at high B1 values was performed on it.
Even P-1 would be very unlikely to find a factor
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Old 2011-03-09, 08:50   #4
frmky
 
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Quote:
Originally Posted by Christenson View Post
... since NFS@home and I might get into a race condition
Although the status page is not yet updated, you may wish to try connecting to the project...
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Old 2011-03-09, 12:56   #5
Christenson
 
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Can I get some help in the practicalities of setting up the card? The OS is Win XP 32 bit.
Yes, I have been reading the NFS@home people, even here on mersenneforum.org, and they definitely have M1061 in their sights, although the sieving may not *quite* have begun. Thus the need for more suggestions; M1061 will very likely be factored this year, and I might even help the sieving with one of my regular CPU cores.
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Old 2011-03-09, 19:24   #6
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Quote:
Originally Posted by Christenson View Post
Yes, I have been reading the NFS@home people, even here on mersenneforum.org, and they definitely have M1061 in their sights, although the sieving may not *quite* have begun. Thus the need for more suggestions; M1061 will very likely be factored this year, and I might even help the sieving with one of my regular CPU cores.
I think you missed the point...
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Old 2011-03-10, 01:44   #7
Christenson
 
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I did not miss that work on M1061 by my non-sieving CUDA device has a reasonably high probability of only warming up my work area and raising my electric bill. That's why I asked for other targets.

The question remains: Do we have a practical TF or P-1 implementation for CUDA on 32-bit WinXP for my GEForce 210 with 512K of RAM? Where do I download it from? [And if it works, maybe I'll put a 460 on this or my next Linux compute box and find a few factors with it]
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Old 2011-03-10, 02:32   #8
vsuite
 
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Quote:
Originally Posted by pegaso56 View Post
Hi, i´m using Nvidia 210 GT for TF to lower limits. Results are regular. 1 exponent checked 64 to 65 bits/7min, doing the same with a 955 BE overclocked it´s around 10 minutes per exponent.
Best regards, Carlos
Christenson,

On Windows, you can use mfaktc (Trial division with Cuda thread) for cuda trial factoring. It is slower on lower end cards, the 210 being here just 50% faster than a core of an overclocked 955BE.
I use a 220, which is about 3 times as fast as a 2.4GHz Core-2 quad (Q6600) core. (But I really want to upgrade it perhaps to a 430 or 450.)
The 460 is many, many times faster than a 210 for tf and can _also_ do Cuda LL using CudaLucas (MacLucasFFTW thread). (You may need to upgrade your power supply.)

Last fiddled with by vsuite on 2011-03-10 at 02:35
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Old 2011-03-22, 02:33   #9
Christenson
 
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Finally got mfaktc running on the GEForce 210 tonight. Roughly 3.7+Ghz days/day at TF, (remembering that the host is just a Pentium 4) with Maxstreams=2, and screen response for rest of system is unreasonably slow, not usable for proper work but I don't care when it's running overnight.
I will try CUDALucas tomorrow, with luck.
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