18 Sep
2014
18 Sep
'14
9:29 p.m.
On Fri, 12 Sep 2014 01:29:01 -0600 (MDT)
Leslie Hartmier <leslieh1(a)shaw.ca> wrote:
Hey everyone!
I have a question regarding the conversion farms that people have
made, and I would like some insight.
We're going to have some fun creating a four octo-core machine farm
to make DCPs out of whatever comes our way, and I was wondering if
anyone is using 10GbE for their internal network.
Clearly, 10,000 Base-T is not really necessary for most things.
However, we would like to make sure that the bottleneck is not the
network, but I also don't want to have to special order about $3,000
in 10GbE hardware to do this if it is not necessary, so if a 1GbE
network is comfortably adequate for the process, I really would look
forward to that kind of assurance. It would cut the current tally
back about a third on the build. On the other hand, if it would be a
major benefit, I don't want to take it off the table either.
Hi Leslie,
I'm afraid I don't have any insight with sufficient evidence to warrant
spending (or not) $3K. I would *guess* that Gbit ethernet would be the
limiting factor with fast clients, but I am not certain.
Much as it pains me to say this: if you are spending serious amounts of
money and your objective is simply to create DCPs quickly, would you
better spending some of that money on some commercial software which can
encoder faster on cheaper hardware?
If you are enthusiastic about doing it with open source, then so much
the better :)
Now onto the other thing:
NOTE: I'm certainly not pushing. I was wondering if DCP-o-matic using
GPUs for conversion is closer to the front of the minds of Carl and
the others. The reason for this is that I don't intend to buy the
I haven't done any work on it myself, but there is a chap (Aaron Boxer)
who has done a lot of work on GPU-acceleration of openjpeg. If that
comes off, it would be excellent news for DCP-o-matic and OpenDCP. I'm
not sure when his work will be ready for widespread use, though.
On a practical note... can you start with a Gbit/cheap video card
system and then upgrade if the need becomes apparent?
With best regards,
Carl