20110309, 03:21  #1 
Dec 2010
Monticello
5×359 Posts 
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 P1 factor) my favorite unfactored small mersenne number, 2^10611 ?, 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). 
20110309, 03:56  #2 
Oct 2006
Rosario, Argentina
37 Posts 
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 
20110309, 07:13  #3  
Sep 2009
977 Posts 
Quote:
Even P1 would be very unlikely to find a factor 

20110309, 08:50  #4 
Jul 2003
So Cal
2^{3}·3^{2}·29 Posts 

20110309, 12:56  #5 
Dec 2010
Monticello
3403_{8} Posts 
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. 
20110309, 19:24  #6  
Jul 2003
So Cal
2088_{10} Posts 
Quote:


20110310, 01:44  #7 
Dec 2010
Monticello
1795_{10} Posts 
I did not miss that work on M1061 by my nonsieving 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 P1 implementation for CUDA on 32bit 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] 
20110310, 02:32  #8  
Jan 2010
2×3×19 Posts 
Quote:
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 Core2 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 20110310 at 02:35 

20110322, 02:33  #9 
Dec 2010
Monticello
5·359 Posts 
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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