GITSScheduler - ComfyUI Built-in Node Documentation

The GITSScheduler node generates noise schedule sigmas for the GITS (Generative Iterative Time Steps) sampling method. It calculates sigma values based on a coefficient parameter and number of steps, with an optional denoising factor that can reduce the total steps used. The node uses pre-defined noise levels and interpolation to create the final sigma schedule.

Inputs

Parameter	Description	Data Type	Required	Range
`coeff`	The coefficient value that controls the noise schedule curve (default: 1.20). The value is rounded to two decimals and selects which pre-defined noise level table is used.	FLOAT	Yes	0.80 - 1.50 (step 0.05)
`steps`	The total number of sampling steps to generate sigmas for (default: 10)	INT	Yes	2 - 1000
`denoise`	Denoising factor that reduces the number of steps used (default: 1.0)	FLOAT	Yes	0.0 - 1.0

Note: When denoise is 0.0 or less, the node returns an empty tensor. When denoise is less than 1.0, the actual number of steps used is calculated as round(steps * denoise), and only the last corresponding part of the schedule is kept. For steps between 2 and 20, the node selects a matching pre-defined noise schedule. For steps greater than 20, the node uses log-linear interpolation to extend the pre-defined noise levels to the desired number of steps.

Outputs

Output Name	Description	Data Type
`sigmas`	The generated sigma values for the noise schedule. For N steps, N+1 sigma values are returned, and the last sigma is set to 0.	SIGMAS

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