fix noisy images at high step counts #1086
Merged
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At step counts greater than ~75, the ksamplers start producing noisy images when using the Karras noise schedule. This PR reverts to using the model's own noise schedule, which eliminates the problem at the cost of slowing convergence at lower step counts.
This PR also introduces a new CLI
--save_intermediates <n>
argument, which will save every nth intermediate image into a subdirectory namedintermediates/<image_prefix>
.Addresses issue #1083.