[Bf-committers] Blender Network Rendering in Erlang

[Martin Poirier]

Render slaves can be added and removed any time. (removal is automatic when slaves don't communicate after a set amount of time)

There's also load balancing, error recovery, render process logging, ...

http://wiki.blender.org/index.php/User:Theeth/netrender#Feature_List

Martin

--- On Mon, 10/5/09, Stefan Langer <mailtolanger at googlemail.com> wrote:

> From: Stefan Langer <mailtolanger at googlemail.com>
> Subject: Re: [Bf-committers] Blender Network Rendering in Erlang
> To: "bf-blender developers" <bf-committers at blender.org>
> Received: Monday, October 5, 2009, 3:51 PM
> I agree that erlang is a perfect
> choice for building a robust distributed
> rendering system. Especially failover would be easy to
> setup. I just have no
> idea how complicated the c interfacing stuff would be.
> Does your python api handle dropping and adding nodes on
> the fly? As I don't
> see a problem realizing that with erlang.
> 
> 
> 2009/10/5 Martin Poirier <theeth at yahoo.com>
> 
> > I already have a working version of network rendering
> (in Python), so I
> > don't really see the need to restart from scratch in
> Erlang, especially
> > since that would mean having to write complete
> bindings to replace the part
> > of the Blender python api that are needed.
> >
> > Of course, people are free to do whatever they want
> with their own time.
> >
> > Martin
> >
> > --- On Mon, 10/5/09, Emmanuel Stone <emmanuel.stone at gmail.com>
> wrote:
> >
> > > From: Emmanuel Stone <emmanuel.stone at gmail.com>
> > > Subject: Re: [Bf-committers] Blender Network
> Rendering in Erlang
> > > To: "bf-blender developers" <bf-committers at blender.org>
> > > Received: Monday, October 5, 2009, 2:47 PM
> > > I can testify that C interface to
> > > Erlang is functional. We use it
> > > where I work (Demonware).
> > >
> > > Erlang is a good choice for any sort of
> distributed
> > > multi-server
> > > system, and sounds like a good choice for this.
> > >
> > > -Emmanuel
> > >
> > >
> > > On Mon, Oct 5, 2009 at 6:11 AM, Nicholas Amorim
> > > <nicholas at montrealdevelopment.com>
> > > wrote:
> > > > Erlang has FFI (Foreign Function
> Interface).that
> > > allows to perform direct
> > > > calls of external C functions. I don't see
> it as part
> > > of default OTP - yet,
> > > > at least.
> > > >
> > > > http://muvara.org/crs4/erlang/ffi/
> > > >
> > > > Erlang itself provides the EI library to
> interfacing C
> > > with Erlang too:
> > > > http://erlang.org/doc/apps/erl_interface/part_ei_frame.html
> > > >
> > > > I'm currently inclined to write some glue
> code between
> > > Erlang and C than
> > > > drop down to shell and execute blender as a
> separate
> > > program.
> > > >
> > > > I really thinks that Erlang powers to create
> nodes on
> > > differentes machines
> > > > can be a power factor. I'm not sure if the
> overhead
> > > between converting C
> > > > types to Erlang and back and forth would be
> a big
> > > overhead.
> > > >
> > > > But I would like to give a try (test both
> approaches
> > > that I described here,
> > > > test them - I do prefer really using
> standard library
> > > than applying patch to
> > > > stuff, anyway).
> > > >
> > > > So this is it. I'm willing to try anyway, if
> you think
> > > it's a good idea, I
> > > > would start to dig into Blender's code (only
> saw it
> > > once) for render
> > > > functions and so on.
> > > >
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