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upcast-sampling, note for hampered nvidia cards

ClashSAN 2023-04-14 03:43:30 +00:00
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Optimizations.md

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A number of optimization can be enabled by [commandline arguments](Run-with-Custom-Parameters): A number of optimization can be enabled by [commandline arguments](Command-Line-Arguments-And-Settings):
| commandline argument | explanation | | commandline argument | explanation |
|--------------------------------|--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------| |--------------------------------|--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
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| `*do-not-batch-cond-uncond` | Prevents batching of positive and negative prompts during sampling, which essentially lets you run at 0.5 batch size, saving a lot of memory. Decreases performance. Not a command line option, but an optimization implicitly enabled by using `--medvram` or `--lowvram`. | | `*do-not-batch-cond-uncond` | Prevents batching of positive and negative prompts during sampling, which essentially lets you run at 0.5 batch size, saving a lot of memory. Decreases performance. Not a command line option, but an optimization implicitly enabled by using `--medvram` or `--lowvram`. |
| `--always-batch-cond-uncond` | Disables the optimization above. Only makes sense together with `--medvram` or `--lowvram` | | `--always-batch-cond-uncond` | Disables the optimization above. Only makes sense together with `--medvram` or `--lowvram` |
| `--opt-channelslast` | Changes torch memory type for stable diffusion to channels last. Effects not closely studied. | | `--opt-channelslast` | Changes torch memory type for stable diffusion to channels last. Effects not closely studied. |
| `--upcast-sampling` | For Nvidia and AMD cards normally forced to run with `--no-half`, [should improve generation speed](https://github.com/AUTOMATIC1111/stable-diffusion-webui/pull/8782). |
Extra tips (Windows): Extra tips (Windows):