Can Einstein handle 3.5 PFlops offered by NVIDIA's K20? Cuz I'm thinking about buying one.
19 Mar 2013 11:56:28 UTC
Topic 196863
(moderation:
NVIDIA's K20 GPU has 2496 CUDA cores and offers a Peak single precision floating point performance (board): 3.52 Tflops for only 225 watts!
My question is, Can Einstein use all of those cores if I were to buy one? Would this GPU be used fully?
What would happen to the Einstein@Home community if one or two of the GPUs were to come online?
Can Einstein handle 3.5 PFlops offered by NVIDIA's K20? Cuz I'm
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Well I wouldn't mind testing one here as long as it has MB with 16GB ram and the fastest multi-core CPU I could have at the same time.
It would cost about the same as buying 11 nVidia GeForce GTX 660Ti 2GB SC
And I have found out that the cards I have act different (slower) if I try to run BRP X2 along with 4 GRP's (or 3 with a 3-core)
My 650Ti SC is running with one of my older 3-core and it does ok until I tried to run the 3GRP's but I have it;s twin running with a 550TI OC and it was still doing ok running the GRP's at the same time (no free cores)
The 660Ti runs ok that way too.
Funny thing is the laptop I am on right now runs BRP X2 cudas and 8 GRP's at the same time 24/7 for almost a year now and it runs just fine without a free core.
So like I said I get tempted to test cards like that Tesla K20 but I wouldn't be surprised if it doesn't do what you would hope for when you pay $3,499
I cant know in advance if
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I cant know in advance if that GPU is worth for number crunching, but for sure it wont affect the project in any way...
The project was able to handle the massive power of lots of GPUs some time ago when SETI was offline, so just one extra GPU is not going to be noticed, no matter how fast is.
But, if you are considering that GPU just for number crunching in Einstein, then I fear you will be dissapointed... Teslas have a really high cost because their speed on double pressicion which is not needed on Einstein.
...plus they are engineered
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...plus they are engineered for reliability over outright speed, so clocked slower and use ECC RAM.
Probably better to spend the money on GTX Titan - less than 1/3 the price, and 2688 cores.
Yeah, I also recommend the
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Yeah, I also recommend the Titan over a Tesla. Over at GPUGRID they're working on an application that will run optimal on the Titan. No idea if this is needed for Einstein too (my guess it isn't)
For E@H GPU processing,
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For E@H GPU processing, buswidth and bandwidth appear to have a much greater impact than core count. GTX 670/680 are close in bandwidth, GFlops/Watt to the K20 and almost an order of magnitude lower in cost. If raw power is what you are after consider the HD7970 as its bandwidth is ~30% higher than the 3 cards mentioned above and is spec'd at 3.7 TFlops.
Gord
RE: For E@H GPU processing,
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I can't say about Einstein but I CAN say the AMD 7970 gpu is SCREAMINGLY fast!! Comparing it to the 5770 it replaced I went from doing units in about 1.5 hours to 10 MINUTES!! I am using it at DistRTgen so I do not even know if it CAN work here, there are some projects that just haven't made it work for them yet.
RE: What would happen to
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We'd be very happy !
Never knock back a petaflop, that's what I always say ... :-) :-)
IMHO the Titan specs are awesome, especially as Neil says on the reliability side but also power use. Naturally it's performance is subject to moderation by the system it's in. Having said that though it is a major outlay for anybody, definitely a bleeding edge item. It'll be the most expensive single item within the case for sure.
[musings]
[/musings]
Cheers, Mike.
( edit ) Wow, they're talking 3-way SLI here.
I have made this letter longer than usual because I lack the time to make it shorter ...
... and my other CPU is a Ryzen 5950X :-) Blaise Pascal
> Fire and brimstone
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>
Fire and brimstone coming down from the skies! Rivers and seas boiling! Forty years of darkness! Earthquakes! Volcanoes! The dead rising from the grave! Human sacrifice! Dogs and cats living together! Mass hysteria!
If you have a look
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If you have a look here
http://einsteinathome.org/host/5728548/tasks&offset=0&show_names=1&state=3&appid=0
choosing between AMD/ATI 7970 and Nvidea Titan is easy in my opinion.
Here in NL a 7970 costs just halve of a Titan.
http://www.newegg.com/Product
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http://www.newegg.com/Product/Product.aspx?Item=N82E16814131483&IsVirtualParent=1
PowerColor AX7990 6GBD5-2DHJ Radeon HD 7990 6GB 384-bit x2 GDDR5 PCI Express 3.0 x16 HDCP Ready CrossFireX Support Video Card looks quite nice.
The price is not too bad either but it looks like it would be cheaper just to buy 2 of the 7970 cards unless ya buy 2 of the 7990 which would = 4 of the 7970's. I agree the 7970 seems quite fast and will be something I will be checking out in the near future.
PC setup MSI-970A-G46 AMD FX-8350 8 core OC'd 4.45GHz 16GB ram PC3-10700 Geforce GTX 650Ti Windows 7 x64 Einstein@Home