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When rendering from the command-line in Maya (using Render), 3ds Max (using 3dsMaxCmd.exe) or Softimage (using xsibatch.exe) of your 3d app with Redshift, you can specify the GPU devices to use for the rendering job. When specifying the GPU devices from the command-line, the Redshift preferences.xml file is not updated, so running Maya, 3ds Max or Softimage your 3d app in interactive mode will still use the GPU devices that you specified in the System tab of the Redshift render options.

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Prerequisites

To use the Houdini command-line tools, you need to open the Houdini 'Command Line Tools' application (available as a shortcut from the start menu) in Windows.

  In Linux, you'll need to source the Houdini environment as follows:

Code Block
source houdini_setup

Syntax / Example

For example, using 'hbatch', the most basic command-line render session without scripts to load a scene, set the enabled GPUs and render the Redshift ROP node, can be:

Code Block
> hbatch mySceneFile.hip>hip
> Redshift_setGPU -s 011>011
> render /out/myRedshiftROP


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Please note that the -s 001 parameter after the Redshift_setGPU command means that, on a system with 3 GPUs, the first GPU should be disabled ('0') while the second and third GPU should be enabled ('1').

Alternatively, you can write a script file like

Code Block
mread mySceneFile.hip 
Redshift_setGPU -s 011 
render /out/myRedshiftROP

And execute it using:

Code Block
> hbatch myScriptFile


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Code Block
<preference name="AllCudaDevicesAllComputeDevices" type="string" value="0:Quadro K5000,1:Quadro 6000," />

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