Re: [AMBER] GTX980 PERFORMANCE

From: Ross Walker <ross.rosswalker.co.uk>
Date: Fri, 27 Feb 2015 09:05:53 -0800

Hi Carmen,

This spec looks good to me. The 980s are perfectly good for AMBER - running at present a little faster than 780s.

What model of 980 are you considering? I would stay away from all the fancy 'custom cooler' versions as they tend not to do well in multi-GPU configurations. You are probably safest going with EVGA cards based on the NVIDIA reference design. E.g. This one:

http://tinyurl.com/k37frth

Beyond that if you are looking for a slightly better price performance and higher GPU density (albeit at a higher price per node) then you next option are the new 8 GPU machines. Here's some 980 benchmarks from an Exxact machine (I 'think' this is a tyan motherboard) from the last couple of days.

JAC_PRODUCTION_NVE - 23,558 atoms PME 4fs
-----------------------------------------

CPU code 12 cores: | ns/day = 24.34 seconds/ns = 3549.98
      [0] 1 x GPU: | ns/day = 257.72 seconds/ns = 335.25
      [1] 1 x GPU: | ns/day = 263.08 seconds/ns = 328.42
      [2] 1 x GPU: | ns/day = 260.64 seconds/ns = 331.50
      [3] 1 x GPU: | ns/day = 255.45 seconds/ns = 338.23
      [4] 1 x GPU: | ns/day = 257.93 seconds/ns = 334.97
      [5] 1 x GPU: | ns/day = 254.36 seconds/ns = 339.68
      [6] 1 x GPU: | ns/day = 253.92 seconds/ns = 340.26
      [7] 1 x GPU: | ns/day = 262.15 seconds/ns = 329.58
Multiple Single GPU Run Performance
      [0] 1 x GPU: | ns/day = 257.56 seconds/ns = 335.45
      [1] 1 x GPU: | ns/day = 261.78 seconds/ns = 330.05
      [2] 1 x GPU: | ns/day = 260.51 seconds/ns = 331.65
      [3] 1 x GPU: | ns/day = 255.83 seconds/ns = 337.72
      [4] 1 x GPU: | ns/day = 258.55 seconds/ns = 334.17
      [5] 1 x GPU: | ns/day = 254.71 seconds/ns = 339.21
      [6] 1 x GPU: | ns/day = 254.22 seconds/ns = 339.86
      [7] 1 x GPU: | ns/day = 258.75 seconds/ns = 333.92
 P2P 2 x GPU: | ns/day = 374.42 seconds/ns = 230.76
 P2P 4 x GPU: | ns/day = 428.27 seconds/ns = 201.74
Multiple 2xGPU Run Performance
      [0,1] 2 x GPU: | ns/day = 374.24 seconds/ns = 230.87
      [2,3] 2 x GPU: | ns/day = 370.73 seconds/ns = 233.06
      [4,5] 2 x GPU: | ns/day = 368.69 seconds/ns = 234.34
      [6,7] 2 x GPU: | ns/day = 376.96 seconds/ns = 229.20

You'll get similar performance with the specs you have except that you won't be able to run a single 4 way GPU run (except for GB simulations).

All the best
Ross

> On Feb 27, 2015, at 5:31 AM, carmendigiovanni75.alice.it wrote:
>
> Dear AMBER users and developers,
>>
>> we are thinking to buy a new
> tyan server machine with these features:
>>
>> SERVER SYSTEM TYAN
> FT48 - Tower/Rack,Dual Xeon ,8xSATA
>>
>> N. 2 CPU INTEL XEON E5-2620
> 2.0Ghz - 6 CORE 15MCache LGA2011
>>
>> N. 4 Scheda Video Nvidia
> GTX980, 4GB GDDR5,PCIE 3.0 , 2DVI, HD
>>
>> N. 4 DDR3 8 GB 1600
> Mhz
>> HARD DISK 1 TB SATA 3 WD
>>
>> I known that the GTX980
> offer good performance for AMBER 14
>> What are your views about this
> ?
>
>
> Can you suggest validate alternative configurations?
>>
>
> Thank
> you in advance
>> Carmen
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> AMBER.ambermd.org
> http://lists.ambermd.org/mailman/listinfo/amber


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Received on Fri Feb 27 2015 - 09:30:03 PST
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