Fix LoRA Trainer bugs with FP8 models. (#9854)

* Fix adapter weight init

* Fix fp8 model training

* Avoid inference tensor

comfy_extras/nodes_train.py

@@ -38,6 +38,23 @@ def make_batch_extra_option_dict(d, indicies, full_size=None):
     return new_dict
 
 
+def process_cond_list(d, prefix=""):
+    if hasattr(d, "__iter__") and not hasattr(d, "items"):
+        for index, item in enumerate(d):
+            process_cond_list(item, f"{prefix}.{index}")
+        return d
+    elif hasattr(d, "items"):
+        for k, v in list(d.items()):
+            if isinstance(v, dict):
+                process_cond_list(v, f"{prefix}.{k}")
+            elif isinstance(v, torch.Tensor):
+                d[k] = v.clone()
+            elif isinstance(v, (list, tuple)):
+                for index, item in enumerate(v):
+                    process_cond_list(item, f"{prefix}.{k}.{index}")
+    return d
+
+
 class TrainSampler(comfy.samplers.Sampler):
     def __init__(self, loss_fn, optimizer, loss_callback=None, batch_size=1, grad_acc=1, total_steps=1, seed=0, training_dtype=torch.bfloat16):
         self.loss_fn = loss_fn
@@ -50,6 +67,7 @@ class TrainSampler(comfy.samplers.Sampler):
         self.training_dtype = training_dtype
 
     def sample(self, model_wrap, sigmas, extra_args, callback, noise, latent_image=None, denoise_mask=None, disable_pbar=False):
+        model_wrap.conds = process_cond_list(model_wrap.conds)
         cond = model_wrap.conds["positive"]
         dataset_size = sigmas.size(0)
         torch.cuda.empty_cache()