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Merge pull request #5165 from klimaleksus/fix-sequential-vae
Make VAE step sequential to prevent VRAM spikes, will fix #3059, #2082, #2561, #3462
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@ -530,8 +530,8 @@ def process_images_inner(p: StableDiffusionProcessing) -> Processed:
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with devices.autocast():
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samples_ddim = p.sample(conditioning=c, unconditional_conditioning=uc, seeds=seeds, subseeds=subseeds, subseed_strength=p.subseed_strength, prompts=prompts)
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samples_ddim = samples_ddim.to(devices.dtype_vae)
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x_samples_ddim = decode_first_stage(p.sd_model, samples_ddim)
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x_samples_ddim = [decode_first_stage(p.sd_model, samples_ddim[i:i+1].to(dtype=devices.dtype_vae))[0].cpu() for i in range(samples_ddim.size(0))]
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x_samples_ddim = torch.stack(x_samples_ddim).float()
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x_samples_ddim = torch.clamp((x_samples_ddim + 1.0) / 2.0, min=0.0, max=1.0)
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del samples_ddim
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