Re: [DCP-o-matic] dcpomatic on Raspberry Pi / Raspian

On Apr 28, 2015, at 11:19 AM, Jim Dummett <j(a)dummett.org> wrote: Even more interesting! Please keep us updated as you add more nodes. When you say 1 frame per sec, what format are you encoding from/to? I've found on a Macbook Pro retina with 2.4Ghz i5 processor, encoding from 1080p ProRes Quicktime to Flat container 2K DCP at 100Mbit, I'm only getting 2 or 3 frames/sec. So adding another frame/sec for the cost of a Rasberry Pi would be very good value! Jim On 28/04/2015 15:43, David Nedrow wrote: > An inexpensive render farm is exactly why I got DCP-o-matic compiled on the Pi 2. > > So far, adding a single Raspberry Pi 2 increased my encode speed by an additional frame per second. I’m working on adding a second Pi 2, so we’ll see if the performance increase is linear. > > I’m sure I haven’t optimized the compiled code very well, so with some work we could probably squeeze more performance out of DCP-o-matic. > > One benefit I see to using the Pi is that I can easily expand the “farm” one unit at a time as I can afford it, rather than having to shell out for a single big box. Plus, if one goes bad, I can easily replace it. If a single big server goes down, my whole render server is gone. > > -David > >> On Apr 28, 2015, at 4:54 AM, Jim Dummett via DCPomatic <dcpomatic(a)carlh.net> wrote: >> >> Hi David. >> >> This is really interesting. What kind of performance are you getting from it? >> >> I have been wondering about if it might be a viable option to make a kind of render farm out of 20-50 Raspberry Pi, and whether that'd work out cheaper in terms of processing power per buck than buying one big fast multi-processor machine. >> >> Jim >> >> >> On 27/04/2015 22:36, David Nedrow via DCPomatic wrote: >>> I’ve been able to compile DCP-o-matic on Raspberry Pi 2’s using the Raspian disk image. I had to install a few packages and compile/install a couple of third party libraries. I also had to make some changes to the script file to take into account that the CPU is an ARM chip, and not Intel x86. >>> >>> Carl, any chance you’d be willing to take on another platform for your package distribution? Raspian is a direct Debian implementation, so you should be able to re-use a lot of your setup. >>> >>> I’d be willing to donate a configured Pi 2 to the project if that would help. >>> >>> -David >>> >>> >>> >>> _______________________________________________ >>> DCPomatic mailing list >>> DCPomatic(a)carlh.net >>> http://main.carlh.net/cgi-bin/mailman/listinfo/dcpomatic >> >> _______________________________________________ >> DCPomatic mailing list >> DCPomatic(a)carlh.net >> http://main.carlh.net/cgi-bin/mailman/listinfo/dcpomatic