Mismatched Video Cards work ok or stick with same type?

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Athous80

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Message 1980710 - Posted: 16 Feb 2019, 17:35:03 UTC

I have a 1080ti I retired from my primary rig and I want to run it in my seti only setup which currently has a single 1070ti in it. Will having a 1080ti and 1070ti somewhat cripple it or make the 1080ti run the same as the 1070ti? If so I can get another 1070ti for cheap and just throw it in. However I am also cheap and having a 1080ti lying around I dont want it to goto waste either. Truly mostly just looking to maximize performance. So I'm not opposed to other options as well.

PS I did a search, but getting mixed results in searching for this and nothing for the 1080 & 1070ti mix. So please dont roast me.
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Message 1980713 - Posted: 16 Feb 2019, 17:51:44 UTC
Last modified: 16 Feb 2019, 17:52:58 UTC

The two will co-exist. The simplest way is to optimise for the GTX1070ti, but the GTX1080ti will not be giving its best, but will be doing better than a GTX1080ti running totally stock settings.
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Message 1980718 - Posted: 16 Feb 2019, 18:29:04 UTC - in response to Message 1980710.  

Both cards are sufficiently powerful enough to just max out tuning parameters and it will work for both cards just fine.

-sbs 1024 -period_iterations 1 -tt 1500 -high_perf -high_prec_timer -spike_fft_thresh 4096 -tune 1 64 1 4 -oclfft_tune_gr 256 -oclfft_tune_lr 16 -oclfft_tune_wg 256 -oclfft_tune_ls 512 -oclfft_tune_bn 64 -oclfft_tune_cw 64

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Message 1980742 - Posted: 16 Feb 2019, 20:32:07 UTC - in response to Message 1980713.  

Thanks for the answer, Ill give it a go and see how well it works for a couple weeks and revisit getting another 1070ti than.
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Message 1980751 - Posted: 16 Feb 2019, 22:10:21 UTC - in response to Message 1980718.  
Last modified: 16 Feb 2019, 22:11:51 UTC

Both cards are sufficiently powerful enough to just max out tuning parameters and it will work for both cards just fine.

-sbs 1024[b] -period_iterations 1[/b] -tt 1500 -high_perf -high_prec_timer -spike_fft_thresh 4096 -tune 1 64 1 4 -oclfft_tune_gr 256 -oclfft_tune_lr 16 -oclfft_tune_wg 256 -oclfft_tune_ls 512 -oclfft_tune_bn 64 -oclfft_tune_cw 64


Its -period_iterations_num 1
With each crime and every kindness we birth our future.
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Message 1980753 - Posted: 16 Feb 2019, 22:22:52 UTC

Thanks Mike. Not sure how that got truncated. I copied and pasted so original document was flawed.
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Message 1980830 - Posted: 17 Feb 2019, 12:36:26 UTC
Last modified: 17 Feb 2019, 12:37:39 UTC

Just a passing 2C worth. I've never tried to mix an ATI and an Nvidia card in the same machine but I guess that would be a no-no.

I run a Dell Precision twin Pci-e slot machine, but the GPU slots are so close that you can't fit 2 x twin slot cards. So, it has a GTX960 and a GTX750Ti. They co-exist quite happily with the machine set up to max out the 960. It might be a bit iffy mixing 700 series cards with 1000 series cards in the same box though!

Can't afford to find out :-(
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Message 1980872 - Posted: 17 Feb 2019, 17:06:52 UTC

Works as many others have both ATI and Nvidia cards in the same machine. Each card gets its own drivers. The tuning for the SoG app is close enough for both ATI and Nvidia that the command line would work for both. Maybe not optimally but it still works.
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Message 1980881 - Posted: 17 Feb 2019, 18:02:30 UTC

I am surprised Keith, but fair enough, you are a lot more advanced than I am :-)
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Message 1980885 - Posted: 17 Feb 2019, 18:29:40 UTC
Last modified: 17 Feb 2019, 18:30:47 UTC

I have an A10-6700 AMD CPU which is an APU but I am not using its graphics capabilities. I have an nVidia card on this PC and both SETI, Einstein and also GPUGRID use it. Strangely, a Virtual Tumbleweed Linux by SuSE on the same PC says it cannot find any usable GPU board, so it is using the CPU only. The Virtual Box overhead is very small, both Windows and Linux CPU tasks on the same project take the same time.
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Message 1980892 - Posted: 17 Feb 2019, 19:01:14 UTC

Some VM instances can support compute in the VM like VMWare, but a lot support just basic video output. The VM has to support full pass-through. Don't know anything about SUSE Linux.
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Message 1980908 - Posted: 17 Feb 2019, 20:19:12 UTC
Last modified: 17 Feb 2019, 20:20:25 UTC

The SUN AM20 workstation I have used for 11 years but just died had SUSE Linux OS and a GTX 750 Ti board which was full used. It had a 4 GB Video RAM. Maybe the GTX 750 board which I am using on a Windows 10 PC and a Tumbleweed SUSE Linux guest has only I GB Video RAM and BOINC 7.14.2 of Tumbleweed does not recognize it.
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Message 1980915 - Posted: 17 Feb 2019, 20:42:10 UTC - in response to Message 1980872.  

Works as many others have both ATI and Nvidia cards in the same machine. Each card gets its own drivers. The tuning for the SoG app is close enough for both ATI and Nvidia that the command line would work for both. Maybe not optimally but it still works.
ATI and NVidia use different command line files for tuning and can be tuned separately. They work well together.
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Message 1980918 - Posted: 17 Feb 2019, 21:25:54 UTC - in response to Message 1980915.  

Thanks for the comment Brent. Yes, I did not think of the different command file names that Nvidia and ATI cards have. I was thinking of a command line entry in app_info or app_config that is agnostic and applied to all cards.
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Message 1981053 - Posted: 18 Feb 2019, 22:13:16 UTC

I have one AMD R9 270X and one Nvidia 750TI same PC on win 10. They work good till 2 mounts ago . new gpu drivers break the OpenCL support. When ever installed new drivers last one support OpenCL other lost. So now I used AMD with OpenCL and nvidia with cuda. They work together now.
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Message 1981058 - Posted: 18 Feb 2019, 22:29:04 UTC - in response to Message 1981053.  

I have one AMD R9 270X and one Nvidia 750TI same PC on win 10. They work good till 2 mounts ago . new gpu drivers break the OpenCL support. When ever installed new drivers last one support OpenCL other lost. So now I used AMD with OpenCL and nvidia with cuda. They work together now.
You lost OpenCL support for your 750 Ti because you let Windows load its own driver which doesn't have support OpenCL.

Go to Nvidia's site and download/install their driver which has the missing OpenCL component. ;-)

Cheers.
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Message 1981077 - Posted: 18 Feb 2019, 23:29:26 UTC - in response to Message 1981058.  

I have one AMD R9 270X and one Nvidia 750TI same PC on win 10. They work good till 2 mounts ago . new gpu drivers break the OpenCL support. When ever installed new drivers last one support OpenCL other lost. So now I used AMD with OpenCL and nvidia with cuda. They work together now.
You lost OpenCL support for your 750 Ti because you let Windows load its own driver which doesn't have support OpenCL.

Go to Nvidia's site and download/install their driver which has the missing OpenCL component. ;-)

Cheers.


I always DL drivers from web sites and install manually. as I said each firm delete others entries from registry about driver OpenCL.dll files. I try different version drivers. disabled auto install drivers from win update. Copy manually dll files after install. but no solution so far.
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Message boards : Number crunching : Mismatched Video Cards work ok or stick with same type?


 
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