GPU Acceleration

Processing with the Graphics Processing Unit (GPU) is available for certain features and is faster than processing with the Central Processing Unit (CPU).

Support for GPU acceleration depends on the version of the NVIDIA graphic card that is installed on your system. The following configurations are supported for GPU acceleration.

Configuration	Feature available?
FX5800	Yes
FX5600	Yes
FX5500	Yes (except Noise plugin 3.1)

Warning:

Due to the enhancements in the GPU, we do not recommend using Lustre to render grades created in Lustre 2011 or earlier if you are looking for pixel accuracy rendering.

GPU acceleration is available for the following features:

Playback of cached degrained frames
1D or 3D on calibration LUTs
Animated or still repositions (including rotations)
Animated or still input primary grading
Input and output primary grading with RGB, hue and light saturation (LS) curves
Secondary grading with RGB curves
Secondary grading with hue curves
Secondary black clip/reference and white clip/reference in Linear mode
Secondary key cleanup and shrink
Imported mattes for secondaries
Gamma and contrast adjustments to secondaries in Linear mode
Low, mid, and high adjustments to secondaries
Input and render/output LUT
Lustre Sparks plugins:
- Blur mix
- Glow
- Noise plugin 3.1
- Printbleach
Note:A performance hit can occur when using the Lustre Sparks plugins.

For more information about these features, see:

GPU acceleration is also available for certain secondary grading features with up to 48 secondary layers enabled. You can apply, and optionally animate, each of the following secondary grading features and continue to use GPU acceleration:

Primary grading inside and outside geometries, including adjustments to overall brightness, contrast, hue, and saturation
Softness, Colour, and Opacity slider values for geometries, with Softer and Variable optionally enabled
Key-in shapes based on hue, luminance, and saturation, and refined by tolerance and softness range definition
Key and geometry blurs

Note:A performance hit can occur when using the geometry blur.
Multiple point changes for geometries

For more information about these features, see Secondary Colour Grading.

When GPU acceleration is enabled, the histogram, vectorscope, and waveform monitors do not dynamically update. They retain the colour distribution of the image before GPU was enabled.

The following parameters cannot be accelerated by the GPU. These parameters are processed by the CPU instead.

Lustre Sparks plugins:

Add noise
Blur
Defocus
Directional blur
Field zoom
Gold
Noise plugin 2
Noise plugin 3
Silver

Note:If GPU acceleration is enabled and Lustre encounters a shot with features that cannot be processed by the GPU, the CPU is used for the shot. The GPU button remains enabled, but is greyed out until you navigate to the next shot in the timeline that contains features available for GPU acceleration.

To enable GPU acceleration:

Do one of the following:
- Click GPU.
- Press Y.
A GPU flag appears in the upper-right section of the Player.

Note:GPU acceleration only works in progressive scan mode. Before you render a project, you need to switch the scan type to interlaced (located in the Setup > Grade menu).

To disable GPU acceleration:

Do one of the following:
- Click GPU.
- Press Y.
GPU acceleration is disabled.