Hi all,
Jan,
I don't run such a cluster, but if I where running this, without
effective cooling, I would choose motherboards like Jetway JNC96-525
Fanless Dual Core Atom Mini-ITX Board with 12V DC Input. You can put 4
GB DDR2 per motherboard which I think is enough.
Processors is low power, so you can put a bunch of these on one single
standard atx PSU (I think it's about 40W per motherboard at max power
consumption, one -600W sold- PSU should run 8 motherboards), see this
link : http://www.mini-itx.com/projects/cluster/default.asp?page=1 .
For interconnects, a gigabit ethernet switch can be used since the board
embeds gigabit controler.
I do not know anything about the performance such setup can get, but the
performances of such processors are far lower than traditional desktop
chips, so it could be expensive to build efficient setup on this base.
If you have a good cooling and supply solution, you should consider AMD
Athlon II X2 270 AM3 (~65€) with Asrock N68-S3 UCC (max memory of 8 GB
DDR3) (~40€).
I'd be pleased to know that such a setup (10 motherboards to follow your
suggestion, no mater if it's atom or amd X2 based) can run 6 times
faster than a six cores AMD. I just know that with a good scaling ratio
on professional software, in order to divide computing time of one
computer by two (just little fewer than two), you need to take two
similar computers (with 40Gb/s link between, of course).
Tip : for computation only, if you run linux, I think that you can just
boot all nodes with PXE or similar boot over ethernet, but I've no
experience that way.
Sorry if it seems brain-dead, I'm quite tired 8-| .
Cheers,
legranblon
Jan Martin wrote:
It is time to reveal a few more facts to allow for better judgment.
Each image set is 13.2 MB per panorama only.
Stitching, blending, cubing and tiling needs 8.5 seconds altogether on
a 6 core AMD PC for USD 750.
What I am looking for is to build a cluster from many cheap boards and
CPUs, that provides a "better performance per Dollar".
Not a "fast PC on a budget".
Something like "10 boards of 150 USD each" that provide 6 times the
performance, bust just cost twice.
Is there really nobody whom runs a rendering farm?
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