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#1 | |
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"Vincent"
Apr 2010
Over the rainbow
55508 Posts |
http://www.tomshardware.com/reviews/...ance,4585.html
Quote:
Last fiddled with by firejuggler on 2016-07-18 at 17:02 |
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#2 |
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Sep 2006
The Netherlands
3×269 Posts |
Faster everywhere except for 64 bits double precision floating point of course.
sieving/trial factoring/factoring isn't using that at all. Yet we do not have anything here on the forum that's really using doubles. I might have a shot at it some time from now though :) Right now toying a tad to get sieving riesels to work at a GPU (starting with my GTX580 yet should scale upwards). Last fiddled with by diep on 2016-07-18 at 18:28 |
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#3 |
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"Victor de Hollander"
Aug 2011
the Netherlands
32×131 Posts |
Isn't CUDA-LL using Doubles?
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#4 |
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"Curtis"
Feb 2005
Riverside, CA
2·2,927 Posts |
Yes, and LLRcuda. Primality testing, any GPU calculation using FFT, uses doubles.
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#5 |
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Sep 2006
The Netherlands
11001001112 Posts |
It's not so efficiently using the double resources.
If card could deliver 6 Tflop then all sorts of factors will limit it to deliver say 400 gflop output as it probably is bandwidth limited (didn't investigate it). Didn't investigate it but would suspect memory bandwidth larger impact than double resources - unless you have too few double resources... What's it using effectively from a Titan X in double resources? Just 20% of it or so or 10%? Maybe less? So that's not really a double precision resources dependant program. It's not a joke that program - it exists! Last fiddled with by diep on 2016-07-19 at 10:33 |
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#6 |
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"Victor de Hollander"
Aug 2011
the Netherlands
32×131 Posts |
Thats something worth investigating once a forum member gets his/her hands on one (or a GTX1080) .
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#7 |
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Sep 2006
The Netherlands
14478 Posts |
1000 series gamerscard have only 4 double precision execution units in each Multiprocessor array (SM) of 128 cuda cores.
So a 1070 with 15 SM's has just 60 double precision execution units. http://docs.nvidia.com/cuda/cuda-c-p...ion-throughput Compare with oldie Tesla's that are for pickup at ebay for 100 dollar, they can deliver 650+ gflops. At a Titan however, not to confuse with newer Titan X, 1/3 of all cuda cores made up its FP64 resources. |
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#8 |
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"David"
Jul 2015
Ohio
11·47 Posts |
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#9 |
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Sep 2008
Kansas
59·67 Posts |
How does the GTX 1060 compare since it is in more of my price range?
http://www.newegg.com/Product/Produc...82E16814125879 |
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#10 | |
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"Victor de Hollander"
Aug 2011
the Netherlands
32×131 Posts |
Quote:
GTX1060: 1280 CUDA cores GTX1070: 1920 CUDA cores GTX1080: 2560 CUDA cores All three cards run at similar clocks speeds. So the GTX1060 should be performing at around 2/3 of a GTX1070. I hope the availability of the newest cards (GTX1080, GTX1070, GTX1060 and RX480s) is solved soon. They are either out of stock or priced ridiculously higher than their advertised launch price. But maybe that is a europe/Netherlands thing. It would appear as either nVidia design is more power efficient or TSMC 16nm FINFET node is superior to GlobalFoundries 14nm. |
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#11 |
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"/X\(‘-‘)/X\"
Jan 2013
https://pedan.tech/
C7016 Posts |
I'm really torn about which card to get.
The 1060 uses 80% of the power of the RX 480 and performs better, especially OpenGL, which matters to me. That 20 watts per year will pay for the difference in price in a couple of years. On the other hand, AMD is doing great work with their drivers, open-sourcing almost everything and getting them integrated into the kernel, and I want to support that. |
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