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Profile HAL9000
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Message 1303505 - Posted: 8 Nov 2012, 13:55:03 UTC - in response to Message 1303452.

I don't think the problem would be HOW to build them, but how to tell Boinc Manager to activate-see those computers, or any other computer.

You may build as many you want but how BM will understand them?

Is there any setting to tell BM that you are working on a farm computer, and use all of them at the same time?

IIRC the issue with with BOINC is that is uses shared memory to communicate to the science apps. Shared memory is not accessible across nodes in a cluster unless you are buying expensive purpose build hardware.

However there are some strides being made into running virtual machines on top of a cluster. Forming several off the shelf systems into one large system for HPC usage. There is at least one company selling this kind of setup. http://www.scalemp.com/architecture
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Message 1303586 - Posted: 8 Nov 2012, 17:27:55 UTC - in response to Message 1303452.
Last modified: 8 Nov 2012, 17:28:24 UTC

I don't think the problem would be HOW to build them, but how to tell Boinc Manager to activate-see those computers, or any other computer.

You may build as many you want but how BM will understand them?

Is there any setting to tell BM that you are working on a farm computer, and use all of them at the same time?


The boinc manager will manage remote clients as well, however each client/node will likely report as a separate machine

EDIT : darn your quick hal ..beat me to the post

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Message 1303602 - Posted: 8 Nov 2012, 17:44:05 UTC - in response to Message 1303586.

As Tron says, BOINC manager can view/control remote hosts as well, but only one at a time. Much better to use a third-party tool like the venerable Boinc View or the newer Boinc Tasks, which can manage multiple remote hosts on a single consolidated console screen.

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Message 1303737 - Posted: 8 Nov 2012, 22:16:48 UTC - in response to Message 1303602.
Last modified: 8 Nov 2012, 22:21:07 UTC

As Tron says, BOINC manager can view/control remote hosts as well, but only one at a time. Much better to use a third-party tool like the venerable Boinc View or the newer Boinc Tasks, which can manage multiple remote hosts on a single consolidated console screen.


A mobo with 3 or 4 PCIe(2.0/3.0)x16/x8 and 3 or 4 DUAL GPU cards, GTX590/690 or
AMD/ATI 5890/6990 GPUs and a separate PSU for +12V, 4 x 35 -50Amp* connectors,
is probably a more (cost) & effective way to achieve your goal.*(PSU=2500Watt)
An 6 core AMD or i7-2600/2700(K) can 'drive'them.

Then expand it by building x # of them ;-)
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Message 1303907 - Posted: 9 Nov 2012, 7:59:50 UTC - in response to Message 1303737.

Would building a super cruncher like that actually be the most cost effective?

Those high end components are NOT cheap, maybe 5 or 10X what common or garden components will cost. So even if you need to buy 3X of them, so what?

I would suspect that using 3 lower spec machines, with $50 parts, motherboards / CPU / PSU etc. Just enough to feed your single slot high end GPU properly. But a basic 4 core AMD would keep that CPU humming. It has nothing else important to do, and you don't have the bus and RAM contention that a machine with more cores and GPUs probably have. So even if the system board isn't as fast, it's also under much less load, so I suspect that performance would be similar?

Ian

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Message 1304024 - Posted: 9 Nov 2012, 15:32:26 UTC - in response to Message 1303907.

Would building a super cruncher like that actually be the most cost effective?

Those high end components are NOT cheap, maybe 5 or 10X what common or garden components will cost. So even if you need to buy 3X of them, so what?

I would suspect that using 3 lower spec machines, with $50 parts, motherboards / CPU / PSU etc. Just enough to feed your single slot high end GPU properly. But a basic 4 core AMD would keep that CPU humming. It has nothing else important to do, and you don't have the bus and RAM contention that a machine with more cores and GPUs probably have. So even if the system board isn't as fast, it's also under much less load, so I suspect that performance would be similar?

Ian


Well, as they always say: Your Mileage May Vary, but 1 high-end single
or double GPU card, compaired to 2 or 3 GPUs, with the same amount of CUDA-cores
or Compute Units altogether, is more efficient and gives more choice of mobos
and a CPU. Also easier to build.
Also, when you're in a warmer climate and water/other cooling will be simpler.
This also applies to the case, a good PSU with enough amps on the +12V rails
remains necessary.


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Message 1304765 - Posted: 11 Nov 2012, 2:39:34 UTC - in response to Message 1304024.

Would building a super cruncher like that actually be the most cost effective?

Those high end components are NOT cheap, maybe 5 or 10X what common or garden components will cost. So even if you need to buy 3X of them, so what?

I would suspect that using 3 lower spec machines, with $50 parts, motherboards / CPU / PSU etc. Just enough to feed your single slot high end GPU properly. But a basic 4 core AMD would keep that CPU humming. It has nothing else important to do, and you don't have the bus and RAM contention that a machine with more cores and GPUs probably have. So even if the system board isn't as fast, it's also under much less load, so I suspect that performance would be similar?

Ian


Well, as they always say: Your Mileage May Vary, but 1 high-end single
or double GPU card, compaired to 2 or 3 GPUs, with the same amount of CUDA-cores
or Compute Units altogether, is more efficient and gives more choice of mobos
and a CPU. Also easier to build.
Also, when you're in a warmer climate and water/other cooling will be simpler.
This also applies to the case, a good PSU with enough amps on the +12V rails
remains necessary.


I am running a sabertooth 990fx with an 8 core 8150 Zambezi cpu 1 hd6870 and 1 hd5770 and am running about 100,000 seti work units a day. if i where to do it agin i'd catch a $50 mobo on sale at new egg and get 4 core with apu chip, and two hd6870's . the 6870's can be had for $50 to $100 on ebay if you take your time, and the cpu can be had for a little over $100 too $200 depending on the apu core this would probably run about 250,000 work units a day on 650 watts.

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Message 1304796 - Posted: 11 Nov 2012, 6:56:54 UTC - in response to Message 1304765.

[/quote]
I am running a sabertooth 990fx with an 8 core 8150 Zambezi cpu 1 hd6870 and 1 hd5770 and am running about 100,000 seti work units a day. if i where to do it agin i'd catch a $50 mobo on sale at new egg and get 4 core with apu chip, and two hd6870's . the 6870's can be had for $50 to $100 on ebay if you take your time, and the cpu can be had for a little over $100 too $200 depending on the apu core this would probably run about 250,000 work units a day on 650 watts.
[/quote]

Could you post a link the producing 100k WU/day? I thought Nvidia was faster than AMD....
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bill
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Message 1304797 - Posted: 11 Nov 2012, 7:05:27 UTC - in response to Message 1304796.


I am running a sabertooth 990fx with an 8 core 8150 Zambezi cpu 1 hd6870 and 1 hd5770 and am running about 100,000 seti work units a day. if i where to do it agin i'd catch a $50 mobo on sale at new egg and get 4 core with apu chip, and two hd6870's . the 6870's can be had for $50 to $100 on ebay if you take your time, and the cpu can be had for a little over $100 too $200 depending on the apu core this would probably run about 250,000 work units a day on 650 watts.
[/quote]

Could you post a link the producing 100k WU/day? I thought Nvidia was faster than AMD....[/quote]

Yep, color me skeptical, at least here at SAH.

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Message 1305058 - Posted: 11 Nov 2012, 20:42:47 UTC

I think dancer42 confused credits per day with WU/day. At Primegrid his/her host 293503 has a RAC over 100000, but the tasklist shows work earning about 50 credits per hour. I know nothing about the various kinds of tasks there, perhaps there's an ATI GPU app which earns credit very fast when there's work for it.

Joe

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Message boards : Number crunching : Seti computational farm

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