[RC5] difference between cuda and stream

Mike Reed mikereedwt at gmail.com
Tue Jan 8 15:05:46 EST 2013


Hi,

One stats unit / block is 2^28 keys in length. Not nearly something or
maybe something. For graphics cards, iter 64 (i.e. 64 x 2^28) is common.
Proxies give out packets up to iter 256.

Kind regards,
Mike
On Jan 8, 2013 7:58 PM, "bert" <bertodell at suddenlink.net> wrote:

>  Bruce thank you for a real post on my question and I thank you for it.
>
> Bert
> On 1/8/2013 2:47 PM, Bruce Slade wrote:
>
> Bert,
> Having both ATI/AMD and Nvidia cards, there is no comparison between the
> two for crunching RC5 as the ATI/AMD cards are much much faster.  The
> fastest nvidia I have is a 560ti, and the performance of that card is
> matched by an AMD 6570 which costs much less and consumes much less power
> and puts out basically no heat, where the 560ti sucks power and puts out
> much heat.  An ATI/AMD 6770, using the stream519 client on winXP32 will
> crunch a 32stats credit workunit/block/whatever in 128 seconds,  which
> works out to 21,600 points a day, which I think is what you are asking.
> While I don't have a GTX 690, I would seriously doubt that it would match
> that in points per day on RC5, and again, even if it did the heat generated
> and power used would be in favor of the AMD card.
>
> An other item for you to keep in mind is when you start using the AMD 7770
> cards or higher, you will have to be using the rc5 openCL client as changes
> in the chip design put the stream client out of business for that series.
> And also you need to make sure that the motherboard PCI version will
> support the upper end AMD PCI card software requirements.
>
> On the other hand if you also crunch folding at home, the opposite is true
> as nvidia totally outperforms the amd cards.  So buy the card for the
> predominant distributed computing project you intend to use it mainly for.
>
>
> On 1/7/2013 5:20 PM, bert wrote:
>
> Would you know how much per day a 7970 does?
>
> Bert
> On 1/7/2013 8:02 PM, Joseph Kaye wrote:
>
>  On 1/7/2013 6:02 PM, bert wrote:
>
>  Since I don't own an AMD card and have been strictly NVIDIA brand,I've
> been curious as to which is faster cuda based cards or stream based
> cards. I have been looking at the GTX 690 and the ATI 7970(is this the
> latest?)  I'm thinking that a GTX 690 will do about 64k blocks a day,but
> having never had a stream card I can't imagine what one would do in a
> day. Thanks.
>
>
> Bert
> _______________________________________________
> rc5 mailing listrc5 at lists.distributed.nethttp://lists.distributed.net/mailman/listinfo/rc5
>
>  Looking at the Client Speeds Database
> (http://cgi.distributed.net/speed/query.php?cputype=all&arch=4&contest=rc572&multi=3)
> I'd say the DAMMIT (ATI/AMD) cards are much faster.  An AMD Radeon HD
> 7970  is doing 3,600 Mkeys/sec.
>
>
>
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