ComfyUI Node
⚗ Alchemica Calibration (measure your checkpoint)
Measures how the model builds the image and saves a profile for the alchemica_tarato scheduler.
⚗ Alchemica Calibration (measure your checkpoint)
- model
- positive
- latent_image
- reference_model
- reference_latent
- plot
- report
◄seed1001►
◄dense_steps40►
◄cfg1.00►
◄profile_namekrea2_turbo_nvfp4►
◄modeaccumulate►
◄sonda_eta0.50►
◄measure_half_restrue►
Category⚗ AlchemicaMente/sampling/calibration
Inputs (11)
| Name | Type | Default | Description |
|---|---|---|---|
| model | MODEL | The model to calibrate (e.g. Krea 2 Turbo NVFP4) | |
| positive | CONDITIONING | — | |
| latent_image | LATENT | At the resolution you really generate at (the FINAL one) | |
| seed | INT | 10010–18446744073709550000 | — |
| dense_steps | INT | 4016–120 | Steps of the measuring trajectory. 40 is enough, 60 is more precise |
| cfg | FLOAT | 1.000–10 | As you will use it (Turbo: 1.0) |
| profile_name | STRING | krea2_turbo_nvfp4 | File name inside profili/ |
| mode | COMBO | accumulate | accumula (accumulate) = averages with the other prompts; re-running the same prompt UPDATES its sample instead of adding one. sostituisci (replace) = start from scratch |
| sonda_eta | FLOAT | 0.500–1 | Probe intensity ONLY for measuring eta/detail-boost tolerance (eta_sicuro/detail_sicuro) - not the eta you will generate with |
| measure_half_res | BOOLEAN | true | Also measures at HALF resolution (+~30% time): stage 1 of two-stage sampling then gets its own step spacing (calibration v2) |
| reference_modelopt | MODEL | Optional: e.g. Krea 2 FP8, to measure the error introduced by NVFP4 quantization |
Outputs (3)
| Name | Type | Description |
|---|---|---|
| reference_latent | LATENT | — |
| plot | IMAGE | — |
| report | STRING | — |