LotzaCores and a GTX 1080 FTW

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Profile Brent Norman Crowdfunding Project Donor*Special Project $75 donorSpecial Project $250 donor
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Message 1792656 - Posted: 1 Jun 2016, 18:47:50 UTC - in response to Message 1792652.  

I don't think they monitor much, it's a web server not a social media site.
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Message 1792662 - Posted: 1 Jun 2016, 19:23:45 UTC - in response to Message 1792642.  

Still need to figure out that site for storing my pics, prefer something that is non-Google, there's photobucket, flickr, and a few others, anyone had good experiences over the longer term with any in particular?

I've been using Flickr since their startup and have good experience with them. They've changed the interface multiple times over the years but are still very easy to use. Uploads and links to the files are quick and easy. I've primarily used them for my photography but have been using it a lot more recently for images I need to insert in forum replies
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Message 1792702 - Posted: 1 Jun 2016, 22:51:55 UTC - in response to Message 1792662.  

Thanks Keith, I thought I would start with Imgur, I was trying to avoid the big boys, and Yahoo owns Flickr. I tried posting a pic in my thread about my unusual "GTX770", and it came thru fine, so it appears that at least it works. If it gives me any guff, I'll switch in a heartbeat, as there are a number of options I've found.

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Message 1792717 - Posted: 1 Jun 2016, 23:55:12 UTC - in response to Message 1792702.  

Thanks Keith, I thought I would start with Imgur, I was trying to avoid the big boys, and Yahoo owns Flickr. I tried posting a pic in my thread about my unusual "GTX770", and it came thru fine, so it appears that at least it works. If it gives me any guff, I'll switch in a heartbeat, as there are a number of options I've found.

I have accounts with several of the image hosting sites, but I like Imgur. It is currently one of the least convoluted with the features I want.
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Message 1792857 - Posted: 2 Jun 2016, 12:44:23 UTC

Here's a few pics of this setup. Fairly basic, but seems to work pretty well so far.






here is a couple pics of my setup that I rigged up to allow 4 or more video cards on one motherboard. Currently it's holding 4, should easily handle 6. Works pretty well for a version 1.0 lol




Lastly, pictured are the results of all my work on my farm team, though I've actually recruited another 8-10 for the team since this one was taken, and my daughter is quite excited that her room isn't a staging area any longer! Now it's just a matter of filling each of those PCI-E slots with a decent quality video card, and I'll be good to go. All it takes is money... Maybe I'll start a GoFundMe! Yeah, that'll work. I'm sure of it.



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Profile Brent Norman Crowdfunding Project Donor*Special Project $75 donorSpecial Project $250 donor
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Message 1793232 - Posted: 4 Jun 2016, 0:15:29 UTC

It's been awhile since I have seen the brand DeWALT next to a computer :D
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Message 1793236 - Posted: 4 Jun 2016, 1:29:49 UTC - in response to Message 1791479.  
Last modified: 4 Jun 2016, 1:34:22 UTC

Well, this is my newest addition,

Just under a week, plus the loss of about 18 hours due to Seti server issues and it's already got 171,000 in credit.
Not bad at all.


EDIT- is there an issue with your i7-5930K with 3*GTX 980Tis? Last Scheduler contact was on 30 May 2016, 21:08:38 UTC
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Message 1793343 - Posted: 4 Jun 2016, 11:18:37 UTC - in response to Message 1793232.  

It's been awhile since I have seen the brand DeWALT next to a computer :D

Ya ya ya. Hey! I _did_ say it was a 1.0 version of the product, right? ;-) I already have a few different ideas for the supporting the cards properly without having to use squeezeclamps and whatnot. I have the materials, the plans just need a little massaging. But, when you have multicard droop going on, you go for what you know, and I enjoy woodworking, so that made sense at the time. 2.0 will be much nicer, once I get the some of the other projects I have going on around here taken care of, that is a few down on the list.

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Message 1793345 - Posted: 4 Jun 2016, 12:11:40 UTC - in response to Message 1793236.  
Last modified: 4 Jun 2016, 12:16:18 UTC

Well, this is my newest addition,

Just under a week, plus the loss of about 18 hours due to Seti server issues and it's already got 171,000 in credit.
Not bad at all.


EDIT- is there an issue with your i7-5930K with 3*GTX 980Tis? Last Scheduler contact was on 30 May 2016, 21:08:38 UTC

Nope, no actual issues, I shut it down to perform a video upgrade. It has the 980 in it, and had 2 670s in it as well, all air cooled (for whatever reason, BOINC can't seem to identify more than one video card correctly. I _wish_ I had 3 GTX980ti's! lol). I have had a complete water cooling setup sitting around on the shelf in boxes for about 4 years, for the day I had planed on setting up a killer water cooled system. Well, it kind of fell down the priority list, till it pretty much fell off.

I was looking around at the spare parts pile and remembered that I had a couple of fairly decent cards, both EVGA, a GTX680 and a GTX770 Classified. The 770 is actually quite a bit bigger than the 680, which suprised me, as I thought being newer (7 series vs 6 series) and 'slower' (80 vs 70) the 770 would be more efficient and would actually be smaller, but turns out not to be the case. If fact, I think the 770 actually takes two 8 pin power connectors, I think the 680 takes two 6 pins, not sure what to make of that fact.

Well, since I am already running that system with a Corsair H100 CPU water cooler, I though I would direct all my efforts towards the video end, and install those 2 water cooled cards, and put my kit to good use. In the last couple days, I've gotten the cards plumbed in, and my radiator back from the radiator repair shop. For my radiator, being the overkill/tinkerer guy that I am, I purchased a heater core for I believe a late 70's/early 80s Chrysler panel van similiar to what food trucks use, it was the biggest one that NAPA had, and I got the last one they could find, had to have it shipped in actually.

Well, looking at it, it def was the last one around, one of the inlets was bent a bit, the mounting bracket had broken partially loose, and looked like it was made in the 80s, though I know it was newer than that. I initially took it to the radiator shop to get one side of the mounting bracket that was loose resoldered back on, the 2 fittings attached, and to have it ultrasonically cleaned, because you really don't care all that much if a little crap comes out of it inside an engine cooling system, the tolerances aren't that tight. But, on a CPU water cooled system pump, not so much. They took it in on Thurs afternoon, and had it back to me by yesterday afternoon. Well, turns out the bent inlet actually leaked, so they removed, straightened and reattached it, soldered on the barbed fittings, then fixed it all up and cleaned, flushed it, and pressure tested it to 25 psi, which is much higher than anything it would ever see in operation on my computer.

With that out of the way, now all I have to do is make up an enclosure for it, mount 4 fans to the enclosure, and hook it up to the computer. I hope to have it back up and crunching next week sometime, I miss it's RAC, though not it's power draw. ;-) Installing the water cooling inside the case was 'interesting', as the cards hit the connectors on the bottom slot, and I wanted to use that one to put space between the air cooled one which was mounted closest to the CPU, and the 2 water cooled ones, as when I had all 3 cards in there previously, I know they didn't breath as well as they could have, and thus ran hotter than needed.

Unfortunately, the way that ASUS designed that board and connectors, I couldn't use either of the water cooled cards in the bottom slot, turns out that I had to put the 980 into that slot, and am debating about keeping the USB3 front panel cable plugged in or not, as it is kinda bent clearing the card. It fits, but it isn't right. Who designs these things, anyways? Sheesh. lol

I mounted the 2 water cooled cards into the top 2 slots, and I presume they are all running x16, at least I would hope so, I'll have to check once I get it up and running, but regardless, it'll work fine I'm sure. The tubing wasn't too bad, all things considered, took me about an hour to route it all and get it connected properly. Now that the radiator is back, the rest of the assembly should go pretty smoothly (crossing fingers, don't want to jinx myself), the biggest concern of course is leaks, but I'll deal with them if any pop up. So, that is the saga of my Zoom-PC, hope it will be up and Zooming again soon!

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Message 1793398 - Posted: 4 Jun 2016, 15:32:38 UTC

Here are a couple pics I took of the video cards when they were temporarily installed for a quick mock up, and radiator. See the difference in the size of the cards? The 770 is over an inch taller and longer than the 680. So of course they weren't even close to lining up, hence having to do a big loop between them when I installed them.




And that radiator cleaned up pretty good. It was in the sink after rinsing it out a couple more times, as well as filling it up to measure how much it held, about 16-18oz. Needed to know that to be able to verify I have enough coolant on hand, looks like I do. Yay!




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Message 1793520 - Posted: 4 Jun 2016, 22:56:58 UTC - in response to Message 1793398.  

The 770 is over an inch taller and longer than the 680. So of course they weren't even close to lining up, hence having to do a big loop between them when I installed them.

A big loop?
I'd have thought the ideal way to use a single pump & radiator on 2 or more video cards would be to use Y or T pieces to split the inlet between the cards then re-join the outlets.
Having the output of one card running in to the input of another card means it won't be cooled nearly as well as the first card.
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Message 1793526 - Posted: 4 Jun 2016, 23:08:21 UTC - in response to Message 1793520.  

Grant, I thought the exact same thing, but spoke with a gent at Koolance, and he said that the temp difference between the 1st and 2nd card in the loop is like 2-3c tops. It flows better as well, and I grilled him on this, because the reservoir has 2 pumps that are run either parallel or series, and he said that it would flow much better in a series and would remove heat more efficiently. I know what you're thinking, I was in that place too, but as he works for the company that makes it, and has a lot of experience testing these setups, I decided to believe him. So yep, a loop. Check out this link, and see how they have 4 cards piped together? Much neater than mine, but then, their cards are exactly the same, so they can get away doing that, me, not so much. But I'm sure it will work pretty well, and if everything goes as planned, I might actually have it fired up tomorrow sometime, depends on other things falling in line, but one can hope.

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Message 1793572 - Posted: 5 Jun 2016, 1:25:32 UTC

Grant - a Y or T halves the flow to each card, so cooling is cut. Water isn't air. In effect, the temp of the water in a well-flowing loop should be the same throughout. Not so for air! Water has a much higher heat capacity than air, remember.
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Message 1793586 - Posted: 5 Jun 2016, 2:25:40 UTC - in response to Message 1793572.  

Water has a much higher heat capacity than air, remember.

Oh yes.
However if a group of heat exchangers in series have very little difference in the temperature of what is being cooled between the first and last in the series, then it indicates either poor efficiency of the heat exchanger, or little to no load.
I suspect it's a case of both for CPU & GPU coolers.


Grant - a Y or T halves the flow to each card, so cooling is cut.

I guess it depends on how the cooling is accomplished.
I'm not a plumber (or a refrigeration mechanic), but the plumbing for some cooling systems I've dealt with in the past comprises of the main feed & return lines, which are a larger diameter than the lines that split off to the heat exchangers & then back to the main return line.
The main feed & return lines are sized for the total flow rate required for the number of heat exchanges and their feed piping diameters.

Chiller plant = radiator.
Plot-1, 2 etc = water block.


Water isn't air. In effect, the temp of the water in a well-flowing loop should be the same throughout.

In a closed loop it should be very cool going in & very hot coming out- but this would depend on the load. A very light load, very little difference in temperatures. Very high load, much bigger difference in temperatures (for very efficient heat exchangers).

From the sounds of things they are just making use of the very high specific heat capacity of the water.
ie for all the heat the CPU & GPU produces, it's actually an extremely small thermal load for the water to absorb, so it's temperature doesn't change much. More efficient water blocks would transfer more heat, but I expect the efficiency is severely limited by the small contact area on the CPU/GPU and the corresponding small area in which the water can absorb the heat.
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Message 1793591 - Posted: 5 Jun 2016, 3:11:28 UTC - in response to Message 1793586.  




Chiller plant = radiator.
Plot-1, 2 etc = water block.


That setup will not be able to maintain a constant flow to each GPU resulting in some running much warmer than others, yes, I know, it looks fine in theory, but it doesn't work in the real world unless you have a separate pump for each GPU feed.

Cheers.
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Message 1793595 - Posted: 5 Jun 2016, 3:34:16 UTC - in response to Message 1793591.  

That setup will not be able to maintain a constant flow to each GPU resulting in some running much warmer than others, yes, I know, it looks fine in theory, but it doesn't work in the real world unless you have a separate pump for each GPU feed.

Single pump.
What that diagram doesn't show is the valves on each of the feeds so the system can be balanced, nor the change in diameter of the main feed & return piping for long runs (for an example of that checkout the size of the air ducting on very large air conditioning systems. Huge at the output of the fan, getting smaller in cross section as you get further away).

In the case of 2 heat exchangers only Y pieces would be needed to split & rejoin the main feed & return lines. The use of T pieces would require a valve on the straight through line.
In the case of multiple T pieces, valves on each of the inputs to the heat exchanger.
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Message 1793596 - Posted: 5 Jun 2016, 3:44:09 UTC

Grant replied as I was writing this post. This system will work as long as you equalize the resistance on each plot. Changing diameter of piping or changing the length of the piping to each card would do the trick.

The temperature difference between the input and output is a lot smaller than most people think. Because this system has a radiator they think of car engine input / output. The car engine is an extreme temperature difference and graphic cards are not. Usually the difference is within several degrees.

Like batteries they be connected in series or parallel. As long as your radiator does the job it should not make much difference. of course YMMV.

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Message 1793605 - Posted: 5 Jun 2016, 5:14:26 UTC

If you are still worried about using that radiator in your cpu/gpu cooling loop you can always put a heat exchanger between the radiator loop and your cpu/gpu loop.

http://www.lytron.com/Heat-Exchangers/Standard/Heat-Exchangers-Liquid-to-Liquid
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Message 1793609 - Posted: 5 Jun 2016, 5:42:16 UTC - in response to Message 1793605.  

Naa, I think this will work out quite well for me actually, and is larger and more efficient than anything I've seen offered from any watercooling mfg, so I guess the proof will be when I get it up and running. :-)

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Message 1793783 - Posted: 5 Jun 2016, 22:21:38 UTC - in response to Message 1793345.  
Last modified: 5 Jun 2016, 22:32:16 UTC

for whatever reason, BOINC can't seem to identify more than one video card correctly.

Not really true, especially for GPUs from one vendor.
(i.e. if all are NVIDIA they use the same NVIDIA driver)

Maybe you mean not "can't seem to identify" but "can't seem to use"?
Because if the GPUs are all NVIDIA but different - for BOINC to use all of them you will need:
<use_all_gpus>1</use_all_gpus> in cc_config.xml

If in doubt - post the start of Event Log (Ctrl+Shift+E)


More info on "use_all_gpus" (by Ageless):
https://setiathome.berkeley.edu/forum_thread.php?id=78800&postid=1756194#1756194

... and later on the same thread about "Dummy Plug" (by me):
https://setiathome.berkeley.edu/forum_thread.php?id=78800&postid=1774759#1774759
 


- ALF - "Find out what you don't do well ..... then don't do it!" :)
 
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