But, you're not exactly running a "stock" case in a "normal" room, either.boristsybin wrote:but i dokiore wrote:people tell you to just open a window to air cool 4 X gpu's they haven't run this
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Guidance for building a folding dedicated computer
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Re: Guidance for building a folding dedicated computer
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Re: Guidance for building a folding dedicated computer
Boris, Those are the biggest gauge PCIe power cables I've ever seen
Thanks for all the photos in your gallery. You must've had a lot of fun figuring all that out.
Thanks for all the photos in your gallery. You must've had a lot of fun figuring all that out.
In Science We Trust
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Re: Guidance for building a folding dedicated computer
Yeah, I pimp my wires!Aurum wrote:Boris, Those are the biggest gauge PCIe power cables I've ever seen
Thank you.Aurum wrote:Thanks for all the photos in your gallery. You must've had a lot of fun figuring all that out.
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Re: Guidance for building a folding dedicated computer
I award extra points for the heat exhaust ingenuity!
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Re: Guidance for building a folding dedicated computer
This is not correct. Everyone on here seems to think you need x8 PCIe. This depends on several factors. One being the GPU itself. I am currently running a 1070 on a PCIe 1x to 16x adapter connected to a PCIe 1x Gen3 slot and doing 700k PPD+. This has more to do with the PCIe gen when using multiple GPU's. And yes this does require extension cables to accomplish.jrweiss wrote:7 slots doesn't necessarily mean it's capable of handling 7 GPUs... Since the CPU will handle a max of 40 PCI lanes, 5 x8 GPU connections would be the max available, IF you could physically put the cards into the machine. That board will accept a max of 4 double-slot GPU cards.
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Dedicated folding rig on Linux Mint 19.1:
2 - GTX 980 OC +200
1 - GTX 980 Ti OC +20
4 - GTX 1070 FE OC +200
3 - GTX 1080 OC +140
1 - GTX 1080Ti OC +120
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Re: Guidance for building a folding dedicated computer
That is very good numbers. What FAH Client and driver version you use? Seems that 1060 is very suitible for x1 Gen2 on LinuxFldngForGrandparents wrote:I am currently running a 1070 on a PCIe 1x to 16x adapter connected to a PCIe 1x Gen3 slot and doing 700k PPD+.
Re: Guidance for building a folding dedicated computer
The characteristics of projects so vary. Small projects a different that big projects and there are probably variations in the particular type of analysis being done.
The "Everyone on here seems to think you need x8 PCIe" comes from questions about when the bus speed "matters" The subtlety here is that to some people, it "matters" if the only GPU isn't running at a constant 100% and to others, running two GPUs at, say, 95% is actually a big improvement.
Actually, a very fast GPU needs more bandwidth than a moderate or slow GPU -- especially if you demand that the GPU utilization always be 100%.
Slower GPUs work find with a lower bandwidth, and if you need to allocate lower bus bandwidth in order to accommodate more GPUs, any GPU will get more work done with an X1 connection that if it's not connected.
Only you can decide the best way to spread the resources of your PCIe lanes across whatever group of GPUs you can connect.
The "Everyone on here seems to think you need x8 PCIe" comes from questions about when the bus speed "matters" The subtlety here is that to some people, it "matters" if the only GPU isn't running at a constant 100% and to others, running two GPUs at, say, 95% is actually a big improvement.
Actually, a very fast GPU needs more bandwidth than a moderate or slow GPU -- especially if you demand that the GPU utilization always be 100%.
Slower GPUs work find with a lower bandwidth, and if you need to allocate lower bus bandwidth in order to accommodate more GPUs, any GPU will get more work done with an X1 connection that if it's not connected.
Only you can decide the best way to spread the resources of your PCIe lanes across whatever group of GPUs you can connect.
Posting FAH's log:
How to provide enough info to get helpful support.
How to provide enough info to get helpful support.
Re: Guidance for building a folding dedicated computer
It's unlikely that either the client version of the driver version have very much to do with it.boristsybin wrote:That is very good numbers. What FAH Client and driver version you use? Seems that 1060 is very suitible for x1 Gen2 on Linux
If you want every project to run at 100%, then give your GPU unlimited bandwidth. If you'll settle for some running at 99% and others at 95%, then you've still made a good change.
Depending on the the MB, the total bandwidth that is allocated has a cap as well as the particular slot. Each device gets an allocation of a specific chunk at boot time. In some cases, adding a 1x slot can reduce another slot from 16x to 8x or something like that -- if that matters on the particular project and GPU that is involved.
Posting FAH's log:
How to provide enough info to get helpful support.
How to provide enough info to get helpful support.
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Re: Guidance for building a folding dedicated computer
The important part is the OS: 8x pcie speed recommendation for full speed of fast GPUs is for Windows only. Linux needs much less pcie bandwidth.
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Re: Guidance for building a folding dedicated computer
It may need less but you still see a performance drop off from anything lower than PCIe2.0 x8 on Linuxfoldy wrote:The important part is the OS: 8x pcie speed recommendation for full speed of fast GPUs is for Windows only. Linux needs much less pcie bandwidth.
Re: Guidance for building a folding dedicated computer
True, but it's still a personal judgement whether the drop-off is significant or not ... as compared to the addition of another GPU.Nathan_P wrote:It may need less but you still see a performance drop off from anything lower than PCIe2.0 x8 on Linux
Posting FAH's log:
How to provide enough info to get helpful support.
How to provide enough info to get helpful support.
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Re: Guidance for building a folding dedicated computer
Who is interested in pcie bandwidth limits, we have this thread
viewtopic.php?f=38&t=28847
viewtopic.php?f=38&t=28847
Please advise, hoping to build a dedicated folding machine
As I have posted in the newbie section, I am looking to build or buy a fairly brutish PC to fold with. It might get some VR gaming as well eventually.
I am thinking along the lines of an X99 platform (probably Asus Sabertooth), i7 6850K CPU and probably a GTX 1080ti slotted on.
Am I going along the right lines for serious folding output with long term reliability? OR should I be choosing a different processor/mobo and SLI or something? Are AMD CPUs/platforms worth using instead? Various reviews are saying AMD have now got the edge in various benchmarks etc etc, but folding is a distinctly different application.
Any suggestion of a sensible case with good potential airflow, CPU cooler and PSU would also be useful.
I have built PCs before but my current rig is a few years old now and I just keep skipping along GPU generations to keep it up fairly current. I am just not that up to date with my knowledge of the respective hardware families these days.
Thanks
I am thinking along the lines of an X99 platform (probably Asus Sabertooth), i7 6850K CPU and probably a GTX 1080ti slotted on.
Am I going along the right lines for serious folding output with long term reliability? OR should I be choosing a different processor/mobo and SLI or something? Are AMD CPUs/platforms worth using instead? Various reviews are saying AMD have now got the edge in various benchmarks etc etc, but folding is a distinctly different application.
Any suggestion of a sensible case with good potential airflow, CPU cooler and PSU would also be useful.
I have built PCs before but my current rig is a few years old now and I just keep skipping along GPU generations to keep it up fairly current. I am just not that up to date with my knowledge of the respective hardware families these days.
Thanks
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Re: Please advise, hoping to build a dedicated folding machi
Asus WS-series motherboardollie1983 wrote:As I have posted in the newbie section, I am looking to build or buy a fairly brutish PC to fold with. It might get some VR gaming as well eventually.
Intel 8-thread CPU
16 to 32 Gb RAM
4 to 7 1080Ti
PSU by Seasonic / Corsair / EVGA / Superflower with common +12v line 1200 W and more
watercooling