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post #19301 of 28152 (permalink) Old 11-26-2013, 05:04 PM
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Quote:
Originally Posted by AdamK47 View Post

Ran the test with two GPUs. Using a card on each PLX chip results in much higher results.
Warning: Spoiler! (Click to show)
0 + 1 (first PLX chip)
E:\Unzipped>concBandwidthTest.exe 0 1
Device 0 took 1149.528931 ms
Device 1 took 1152.652710 ms
Average HtoD bandwidth in MB/s: 11119.907605
Device 0 took 1030.198364 ms
Device 1 took 973.302673 ms
Average DtoH bandwidth in MB/s: 12787.945404
Device 0 took 1658.786499 ms
Device 1 took 1723.677368 ms
Average bidirectional bandwidth in MB/s: 15142.467991

0 + 2 (both PLX chips)
E:\Unzipped>concBandwidthTest.exe 0 2
Device 0 took 603.666748 ms
Device 2 took 612.487549 ms
Average HtoD bandwidth in MB/s: 21051.067994
Device 0 took 538.981812 ms
Device 2 took 544.988770 ms
Average DtoH bandwidth in MB/s: 23617.602394
Device 0 took 1088.678589 ms
Device 2 took 1137.077271 ms
Average bidirectional bandwidth in MB/s: 23014.303443

0 + 3 (both PLX chips)
E:\Unzipped>concBandwidthTest.exe 0 3
Device 0 took 602.965332 ms
Device 3 took 595.558289 ms
Average HtoD bandwidth in MB/s: 21360.428253
Device 0 took 552.752136 ms
Device 3 took 527.896118 ms
Average DtoH bandwidth in MB/s: 23702.023922
Device 0 took 1139.254028 ms
Device 3 took 1080.770142 ms
Average bidirectional bandwidth in MB/s: 23078.828588

1 + 2 (both PLX chips)
E:\Unzipped>concBandwidthTest.exe 1 2
Device 1 took 610.352112 ms
Device 2 took 597.500610 ms
Average HtoD bandwidth in MB/s: 21197.036692
Device 1 took 529.573975 ms
Device 2 took 539.985596 ms
Average DtoH bandwidth in MB/s: 23937.354034
Device 1 took 1126.912842 ms
Device 2 took 1079.712158 ms
Average bidirectional bandwidth in MB/s: 23213.476388

1 + 3 (both PLX chips)
E:\Unzipped>concBandwidthTest.exe 1 3
Device 1 took 613.079956 ms
Device 3 took 582.432251 ms
Average HtoD bandwidth in MB/s: 21427.497652
Device 1 took 540.842651 ms
Device 3 took 559.295959 ms
Average DtoH bandwidth in MB/s: 23276.343950
Device 1 took 1178.043579 ms
Device 3 took 1141.475708 ms
Average bidirectional bandwidth in MB/s: 22079.026850

2 + 3 (second PLX chip)
E:\Unzipped>concBandwidthTest.exe 2 3
Device 2 took 1145.232910 ms
Device 3 took 1131.442017 ms
Average HtoD bandwidth in MB/s: 11244.881328
Device 2 took 1015.566589 ms
Device 3 took 1019.366760 ms
Average DtoH bandwidth in MB/s: 12580.308482
Device 2 took 1640.192139 ms
Device 3 took 1680.798218 ms
Average bidirectional bandwidth in MB/s: 15419.393057


Hope that's enough data for you guys. smile.gif

Super! Thank you! I can only compare with two cards using this x79-E WS mobo... same numbers (on avg - yes, very variable. The PCIE lanes must carry other traffic).
+2!

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post #19302 of 28152 (permalink) Old 11-26-2013, 05:07 PM
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I was able to hack the Tesla drivers inf file, so I could install the Testla drivers for my titans, but I am still unable to enable TCC driver mode using nvidia-smi.exe. Does anyone know what the closest Tesla card is to the Titan? K20m? Also what are the odds of it bricking permanently if I flash a K20m bios? I assume I could re flash back to normal but I am not that experienced, and its hard to evaluate the risk. Please share your thoughts.

probability higher than 50:50. Hope you have a spare card for a recover attempt....wink.gif

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post #19303 of 28152 (permalink) Old 11-26-2013, 05:12 PM
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post #19304 of 28152 (permalink) Old 11-26-2013, 05:14 PM
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Quote:
Originally Posted by Jpmboy View Post

probability higher than 50:50. Hope you have a spare card for a recover attempt....wink.gif

50/50 for a permanent brick? i have a spare card of course to recover it. wouldnt all nvidia cards have a standard loader system? why should it brick permanently with a 50/50 rate? just trying to get my head around it.
Quote:
Originally Posted by OccamRazor View Post

K20x biggrin.gif
Flashing does not brick your bios but can leave your card disabled and you have to flash back with another card or with your CPU onboard GPU!

ah yes thanks.. youre right the k20x is the closest to a titan. interesting that the memory is slower. most likely because of ECC. i have no problems re-flashing. i am more concerned about the odds of a permanent brick.

I found this link on a long thread about hacking Titans to K20X.. will check it out!! http://www.eevblog.com/forum/chat/hacking-nvidia-cards-into-their-professional-counterparts/630/
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post #19305 of 28152 (permalink) Old 11-26-2013, 05:38 PM
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50/50 for a permanent brick? i have a spare card of course to recover it. wouldnt all nvidia cards have a standard loader system? why should it brick permanently with a 50/50 rate? just trying to get my head around it.
ah yes thanks.. youre right the k20x is the closest to a titan. interesting that the memory is slower. most likely because of ECC. i have no problems re-flashing. i am more concerned about the odds of a permanent brick.

I found this link on a long thread about hacking Titans to K20X.. will check it out!! http://www.eevblog.com/forum/chat/hacking-nvidia-cards-into-their-professional-counterparts/630/

Nvflash will work to push the bios to the card - it would try to flash the plx chips in my mobo if i let it. The memory control in a tesla is different for DP. But i see you know this.

What are you looking to accomplish? Activate DP compute?

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post #19306 of 28152 (permalink) Old 11-26-2013, 05:51 PM
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post #19308 of 28152 (permalink) Old 11-26-2013, 05:59 PM
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Quote:
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Jpmboy you know your R290X shortcut on your sig goes to this titan club  devil.gif

Quote:
Originally Posted by OccamRazor View Post

Just to tease AMD fanboiz! biggrin.gif

think I should change it?

[i have been having fun with this 290x biggrin.gif firstplace.png 630k .png file

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post #19309 of 28152 (permalink) Old 11-26-2013, 06:01 PM
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think I should change it?

[i have been having fun with this 290x biggrin.gif firstplace.png 630k .png file

Now that im in on the joke NOPE! :D

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