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4ca86332 - Add LoRA support for Cosmos Predict 2.5 and fix pipeline to match official Cosmos repo (#13664)

Add LoRA support for Cosmos Predict 2.5 and fix pipeline to match official Cosmos repo (#13664) * support lora for cosmos 2.5 * Fix inconsistencies with cosmos official repo in VAE encoding, text encoder attention implementation, and timestep scaling * Support f_min and f_max in linear_scheduler warmup * Add requirements and dataset preprocessing scripts to run examples * Add LoRA training scripts * Add LoRA eval scripts * add assets for blogpost * Fix(scheduler): device mismatch from upstream b114620 - move rk and b to device before torch.stack * Always upcast to fp32 * Directly inhrit from LoraBaseMixin * remove flash-attn2 * Use _keep_in_fp32_modules instead of autocast * remove the get_latent_shape_cthw method and fix style * simplifiy the eval script to make it more user-friendly * overwrite scheduling_unipc_multistep.py with main's version * remove network_alphas and add # Copied from * remove figures and assets * revert scheduler * revert fp32 upcast and support bs > 1 --------- Co-authored-by: Ting-Yun Chang <tingyunc@nvidia.com>