Hi Marek,
Yes at present it looks like 2 RTX2080 GPUs (and I assume 2080TI) with stock cooling in a 2U or 4U machine should be fine. As long as the chassis lets you install the GPUs with a gap between them.
All the best
Ross
> On Oct 8, 2018, at 06:15, Marek Maly <marek.maly.ujep.cz> wrote:
>
> Hi Ross,
>
> thanks for info !
>
> 1) So in your opinion two "RTX2080 Ti" in 2U or 4U server should be OK
> with regarding
> to cooling, am I right ? Probably also in this case (just 2
> GPUs/server) will be necessary (suitable) at least one empty PCI-E slot
> between the GPUs, am I right ?
>
>
> 2) Could be possible to add "RTX2080" and "RTX280 Ti" GPUs in the list of
> supported
> Amber18 GPUs - e.g. here http://ambermd.org/GPUHardware.php - soon ?
> We are using this www page in our HW specification, when buying some
> new CPU/GPU nodes.
>
> Thanks,
>
> Best wishes,
>
> Marek
>
>
>
>
>
> Dne Fri, 05 Oct 2018 15:39:30 +0200 Ross Walker <ross.rosswalker.co.uk>
> napsal/-a:
>
>> Hi Marek,
>>
>> My expectation for 2080TI is ~25 to 30% over 1080TI. I should have some
>> firm numbers in about 2 to 3 weeks. Note the cooling design is the same
>> so the founders/reference design cards will have the same issues with
>> multiple cards in a box as the RTX2080 and will need custom cooling
>> solutions.
>>
>> In terms of performance per dollar things do not look good due to
>> NVIDIA's price inflation. You are looking at a 70+% increase in price
>> for a ~30% increase in performance, an increase one historically has
>> always got for free with each new generation of hardware so I would not
>> exactly call the RTX2080TI a technological improvement over the 1080TI.
>> In real terms it is a step backwards by around 4 years.
>>
>> All the best
>> Ross
>>
>>> On Oct 5, 2018, at 09:17, Marek Maly <marek.maly.ujep.cz> wrote:
>>>
>>> Hi Ross,
>>>
>>> thanks a lot for this first RTX2080/Amber18 tests and important
>>> technical comments.
>>>
>>> I think that your "1080Ti vs 2080/Amber18" results are rather in good
>>> agreement
>>> with comparison of these two GPUs on
>>>
>>> https://www.videocardbenchmark.net/high_end_gpus.html
>>>
>>> But what I really look forward to (also because we are planning some
>>> HW updates ...) are Amber18 benchmarks with "RTX 2080 Ti", where seems
>>> to be higher difference comparing to 1080 Ti and also lets hope that
>>> in this actual "GTX Top model" will be also cooling a bit more
>>> satisfying...
>>>
>>> When do you think could be "2080 Ti/Amber18" provisional benchmarks
>>> available ?
>>>
>>> Best wishes,
>>>
>>> Marek
>>>
>>>
>>>
>>>
>>>
>>> Dne Fri, 05 Oct 2018 14:32:07 +0200 Ross Walker <ross.rosswalker.co.uk>
>>> napsal/-a:
>>>
>>>> TLDNR: NVIDIA RTX2080 works with AMBER 18, gives the correct answers
>>>> in provisional tests and gets performance equivalent to a 1080TI as
>>>> long as you don't put more than 2 in a box without some kind of custom
>>>> cooling solution. NVIDIA price inflation is alive and kicking so perf
>>>> per dollar is down ~15%.
>>>>
>>>>
>>>> Dear Amberites
>>>>
>>>> I have finally managed to get my hands on some reference design
>>>> RTX2080 GPUs (another month or so for 2080TI) and had a chance to test
>>>> them with AMBER 18. First impressions are that the reference design
>>>> cooler for the RTX series is crap.
>>>>
>>>>
>>>>
>>>> Unless there is a big space (at least 1 PCI-E unit, but ideally 2)
>>>> between cards then the cards massively overheat, even when running
>>>> their fans at 100% which causes them to significantly downclock. The
>>>> following is an example with 4 cards running at once:
>>>>
>>>> Thu Oct 4 21:08:08 2018
>>>> +-----------------------------------------------------------------------------+
>>>> | NVIDIA-SMI 410.57 Driver Version:
>>>> 410.57 |
>>>> |-------------------------------+----------------------+----------------------+
>>>> | GPU Name Persistence-M| Bus-Id Disp.A | Volatile
>>>> Uncorr. ECC |
>>>> | Fan Temp Perf Pwr:Usage/Cap| Memory-Usage | GPU-Util
>>>> Compute M. |
>>>> |===============================+======================+======================|
>>>> | 0 GeForce RTX 2080 On | 00000000:19:00.0 Off
>>>> | N/A |
>>>> | 42% 76C P2 178W / 215W | 281MiB / 7952MiB | 95%
>>>> Default |
>>>> +-------------------------------+----------------------+----------------------+
>>>> | 1 GeForce RTX 2080 On | 00000000:1A:00.0 Off
>>>> | N/A |
>>>> | 90% 87C P2 112W / 215W | 281MiB / 7952MiB | 96%
>>>> Default |
>>>> +-------------------------------+----------------------+----------------------+
>>>> | 2 GeForce RTX 2080 On | 00000000:67:00.0 Off
>>>> | N/A |
>>>> | 93% 87C P2 100W / 215W | 281MiB / 7952MiB | 96%
>>>> Default |
>>>> +-------------------------------+----------------------+----------------------+
>>>> | 3 GeForce RTX 2080 On | 00000000:68:00.0 Off
>>>> | N/A |
>>>> |100% 87C P2 74W / 215W | 281MiB / 7951MiB | 97%
>>>> Default |
>>>> +-------------------------------+----------------------+----------------------+
>>>> Note the top card runs well maintaining 76C at 178W with the fan at
>>>> just 42%. The remaining cards are close to 100% fan speed, thermal
>>>> limited at 87C and only drawing ~100W. That means they have clocked
>>>> down significantly and are still overheating. I am working with Exxact
>>>> to engineer a solution and I am confident we can get these working in
>>>> 4 and 8xGPU configs but for the time being if you are building your
>>>> own stock machines do not put more than 2 of these in a box and make
>>>> sure you space them out. PNY are going to make more traditional blower
>>>> design versions of the RTX GPUs which hopefully will not have this
>>>> cooling issue. I should have a chance to test some of those in a few
>>>> weeks.
>>>>
>>>> The good news is the AMBER 18 test cases, and the validation suites I
>>>> have, all pass. Performance of the RTX2080 is on par (as long as you
>>>> have the cards spaced out or have an auxiliary cooling solution), with
>>>> the 1080TI, which is what history, and ratio'ing the flop counts,
>>>> would have us expect.
>>>>
>>>> Note these are provisional numbers for the 2080. Performance may
>>>> improve some once optimizations for the SM7.5 hardware have been made
>>>> although I wouldn't expect any miracles.
>>>>
>>>> JAC_PRODUCTION_NVE - 23,558 atoms PME 4fs
>>>> -----------------------------------------
>>>>
>>>> 2080 1 x GPU: | ns/day = 761.01 seconds/ns =
>>>> 113.53
>>>> 1080TI 1 x GPU: | ns/day = 776.83 seconds/ns =
>>>> 111.22
>>>>
>>>> JAC_PRODUCTION_NPT - 23,558 atoms PME 4fs
>>>> -----------------------------------------
>>>>
>>>> 2080 1 x GPU: | ns/day = 713.93 seconds/ns =
>>>> 121.02
>>>> 1080TI 1 x GPU: | ns/day = 733.55 seconds/ns =
>>>> 117.78
>>>>
>>>> JAC_PRODUCTION_NVE - 23,558 atoms PME 2fs
>>>> -----------------------------------------
>>>>
>>>> 2080 1 x GPU: | ns/day = 399.97 seconds/ns =
>>>> 216.02
>>>> 1080TI 1 x GPU: | ns/day = 409.26 seconds/ns =
>>>> 211.11
>>>>
>>>> JAC_PRODUCTION_NPT - 23,558 atoms PME 2fs
>>>> -----------------------------------------
>>>>
>>>> 2080 1 x GPU: | ns/day = 367.69 seconds/ns =
>>>> 234.98
>>>> 1080TI 1 x GPU: | ns/day = 377.10 seconds/ns =
>>>> 229.12
>>>>
>>>> FACTOR_IX_PRODUCTION_NVE - 90,906 atoms PME
>>>> -------------------------------------------
>>>>
>>>> 2080 1 x GPU: | ns/day = 130.48 seconds/ns =
>>>> 662.19
>>>> 1080TI 1 x GPU: | ns/day = 121.95 seconds/ns =
>>>> 708.48
>>>>
>>>> FACTOR_IX_PRODUCTION_NPT - 90,906 atoms PME
>>>> -------------------------------------------
>>>>
>>>> 2080 1 x GPU: | ns/day = 123.86 seconds/ns =
>>>> 697.55
>>>> 1080TI 1 x GPU: | ns/day = 113.46 seconds/ns =
>>>> 761.48
>>>>
>>>> CELLULOSE_PRODUCTION_NVE - 408,609 atoms PME
>>>> --------------------------------------------
>>>>
>>>> 2080 1 x GPU: | ns/day = 26.73 seconds/ns =
>>>> 3232.72
>>>> 1080TI 1 x GPU: | ns/day = 26.14 seconds/ns =
>>>> 3305.84
>>>>
>>>> CELLULOSE_PRODUCTION_NPT - 408,609 atoms PME
>>>> --------------------------------------------
>>>>
>>>> 2080 1 x GPU: | ns/day = 25.30 seconds/ns =
>>>> 3414.99
>>>> 1080TI 1 x GPU: | ns/day = 24.72 seconds/ns =
>>>> 3495.08
>>>>
>>>> STMV_PRODUCTION_NPT - 1,067,095 atoms PME
>>>> -----------------------------------------
>>>>
>>>> 2080 1 x GPU: | ns/day = 16.17 seconds/ns =
>>>> 5344.36
>>>> 1080TI 1 x GPU: | ns/day = 15.09 seconds/ns =
>>>> 5727.20
>>>>
>>>> TRPCAGE_PRODUCTION - 304 atoms GB
>>>> ---------------------------------
>>>>
>>>> 2080 1 x GPU: | ns/day = 1191.46 seconds/ns =
>>>> 72.52
>>>> 1080TI 1 x GPU: | ns/day = 1301.05 seconds/ns =
>>>> 66.41
>>>>
>>>> MYOGLOBIN_PRODUCTION - 2,492 atoms GB
>>>> -------------------------------------
>>>>
>>>> 2080 1 x GPU: | ns/day = 490.54 seconds/ns =
>>>> 176.13
>>>> 1080TI 1 x GPU: | ns/day = 448.95 seconds/ns =
>>>> 192.45
>>>>
>>>> NUCLEOSOME_PRODUCTION - 25,095 atoms GB
>>>> ---------------------------------------
>>>>
>>>> 2080 1 x GPU: | ns/day = 10.89 seconds/ns =
>>>> 7935.83
>>>> 1080TI 1 x GPU: | ns/day = 10.14 seconds/ns =
>>>> 8520.32
>>>>
>>>> Note if you compare against 4 GPUs with no additional cooling the
>>>> clocking down of the 2080s is obvious.
>>>>
>>>> JAC_PRODUCTION_NVE - 23,558 atoms PME 4fs - Runnin 4 independent
>>>> calculations at once.
>>>>
>>>> 2080
>>>> [0] 1 x GPU: | ns/day = 761.27 seconds/ns =
>>>> 113.49
>>>> [1] 1 x GPU: | ns/day = 676.54 seconds/ns =
>>>> 127.71
>>>> [2] 1 x GPU: | ns/day = 649.64 seconds/ns =
>>>> 133.00
>>>> [3] 1 x GPU: | ns/day = 441.83 seconds/ns =
>>>> 195.55
>>>>
>>>> 1080TI
>>>> [0] 1 x GPU: | ns/day = 776.57 seconds/ns =
>>>> 111.26
>>>> [1] 1 x GPU: | ns/day = 779.75 seconds/ns =
>>>> 110.81
>>>> [2] 1 x GPU: | ns/day = 773.42 seconds/ns =
>>>> 111.71
>>>> [3] 1 x GPU: | ns/day = 747.29 seconds/ns =
>>>> 115.62
>>>>
>>>> So in summary:
>>>>
>>>> 2080 works with AMBER 18, gives the correct answers in provisional
>>>> tests and gets performance equivalent to a 1080TI as long as you don't
>>>> put more than 2 in a box without some kind of custom cooling solution.
>>>>
>>>> Of course this is 'modern' NVIDIA so price inflation is the name of
>>>> the game so while the performance matches the performance per dollar
>>>> is significantly worse. 1080TI Founders MSRP was $699, 2080 Founders
>>>> MSRP is $799 so performance per $ has decreased approximately 15%.
>>>>
>>>> All the best
>>>> Ross
>>>>
>>>>
>>>>
>>>>
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>>>
>>>
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Received on Tue Oct 09 2018 - 06:30:02 PDT
