[Bf-cycles] Req: Access to new branch for distributed rendering using MPI and OpenMP (new Blender client not only for Cycles)

Sergey Sharybin sergey.vfx at gmail.com
Sun Jul 23 15:54:47 CEST 2017


While i can see how this is benefitial for technical/farm usage, there are
some concerns related on usefulness for Blender users:

- How difficult it is to set up such an OpenMP farm ?
- How much portable it is (Windows, OSX, Linux, BSD) ?
- What are the supported devices (my guess here is that there will be no
GPU support, as in CUDA and OpenCL) ?

There are also some technical questions:

- Why is OpenMP better for final render? I would assume that could cause
quite huge networking overhead.
- Why do we need some distributed device support which is rather limited to
what OpenMP is offering instead of improving existing device_network.cc
(that oen would at least support all GPUs, will allow to do some data cache
etc..) ?

Those are the main concerns of having this device exposed to Blender users.
On another hand, if all the changes are living in device_openmp.cc and
kernel/kernels/openmp with minimal code overlap, i done feel against having
devices which are used by tehcnical guys and not exposed to Blender users.

That's y current questions and thoughts here anyway.

On Sun, Jul 23, 2017 at 3:07 PM, Jaros Milan <milan.jaros at vsb.cz> wrote:

> Hi,
> I would like to create a new Blender client not only for distributed
> rendering ( offline + interactive ).
> I used my version of client for rendering some scenes of Agent327.
> You can find more information here: http://blender.it4i.cz/
> research/distributed-rendering/
> It could use OpenMPI or Intel MPI ( for using more PCs with Intel Xeon
> Phis/GPU ).
> Best regards
> Milan Jaroš
> Research Assistant
> IT4Innovations national supercomputing center
> VŠB – Technical University of Ostrava
> 17. listopadu 15/2172  |   708 33 Ostrava-Poruba   |   Czech Republic
> e-mail: milan.jaros at vsb.cz  |   web: industry.it4i.cz   |   phone:
> +420 597 329 583 <+420%20597%20329%20583>   |    map: goo.gl/maps/BpF0z
> _______________________________________________
> Bf-cycles mailing list
> Bf-cycles at blender.org
> https://lists.blender.org/mailman/listinfo/bf-cycles

With best regards, Sergey Sharybin
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