# DR rendering, all machines using one core only

**URL:** <https://forums.chaos.com/t/dr-rendering-all-machines-using-one-core-only/16963>\
**Category:** Issues\
**Created:** [January 30, 2008, 11:52am UTC](https://forums.chaos.com/t/dr-rendering-all-machines-using-one-core-only/16963 "2008-01-30T11:52:35Z")\
**Posts on this page:** 5\
**Page:** 1

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**Author:** ![movinganim](https://avatars.discourse-cdn.com/v4/letter/m/d2c977/32.png) [@movinganim](https://forums.chaos.com/u/movinganim)\
**Post date:** [January 30, 2008, 11:52am UTC](https://forums.chaos.com/t/dr-rendering-all-machines-using-one-core-only/16963/1 "2008-01-30T11:52:35Z")

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I was wandering if you guys could help me.

We are trying to render on multiple machines in our office using DR method, however all machines render using one core only. I found out that there is 10 machines limit per licence so theoretically I should have 20 buckets on my screen (all computers are dual core).

Did anyone have similar problem? I would really appreciate your help.

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**Author:** ![QuakeMarine1](https://dub1.discourse-cdn.com/chaosprd/user_avatar/forums.chaos.com/quakemarine1/32/65698_2.png) [@QuakeMarine1](https://forums.chaos.com/u/QuakeMarine1)\
**Post date:** [January 30, 2008, 12:23pm UTC](https://forums.chaos.com/t/dr-rendering-all-machines-using-one-core-only/16963/2 "2008-01-30T12:23:41Z")

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\*\*\* rubbing my glassphere

you are using max9 and Vray RC3

before you render press F11  
type in

renderers.current.system\_numthreads=2

that should give you back a blue 2

if you render now all pc use 2 cores to render

thats bug in vrayRC3 - go for the update !

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**Author:** ![vlado](https://avatars.discourse-cdn.com/v4/letter/v/779978/32.png) [@vlado](https://forums.chaos.com/u/vlado)\
**Post date:** [January 30, 2008, 1:38pm UTC](https://forums.chaos.com/t/dr-rendering-all-machines-using-one-core-only/16963/3 "2008-01-30T13:38:28Z")

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Actually, it’s a bug in 3ds Max… but you can work around it as QuakeMarine1 posted. For newer versions (e.g. 1.5) V-Ray automatically does something similar to force multithreading.

Best regards,  
Vlado

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**Author:** ![movinganim](https://avatars.discourse-cdn.com/v4/letter/m/d2c977/32.png) [@movinganim](https://forums.chaos.com/u/movinganim)\
**Post date:** [January 30, 2008, 2:59pm UTC](https://forums.chaos.com/t/dr-rendering-all-machines-using-one-core-only/16963/4 "2008-01-30T14:59:19Z")

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> [@QuakeMarine1](#):
>
> \*\*\* rubbing my glassphere
> 
> you are using max9 and Vray RC3
> 
> before you render press F11  
> type in
> 
> renderers.current.system\_numthreads=2
> 
> that should give you back a blue 2
> 
> if you render now all pc use 2 cores to render
> 
> thats bug in vrayRC3 - go for the update !

Thanks QuakeMarine1

Checked and it didn’t work.  
I forgot to add in previous post: I’m using max9 64bit and Vray1.5 RC3

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**Author:** ![movinganim](https://avatars.discourse-cdn.com/v4/letter/m/d2c977/32.png) [@movinganim](https://forums.chaos.com/u/movinganim)\
**Post date:** [February 1, 2008, 12:53pm UTC](https://forums.chaos.com/t/dr-rendering-all-machines-using-one-core-only/16963/5 "2008-02-01T12:53:11Z")

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checked it again and it worked:)))  
I guess I was doing something wrong.  
Thanks again QuakeMarine1.