Upload testing/shrink_pixart_sm.py with huggingface_hub

testing/shrink_pixart_sm.py

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+import torch
+from safetensors.torch import load_file, save_file
+from collections import OrderedDict
+
+meta = OrderedDict()
+meta['format'] = "pt"
+
+device = torch.device("cuda" if torch.cuda.is_available() else "cpu")
+
+
+def reduce_weight(weight, target_size):
+    weight = weight.to(device, torch.float32)
+    original_shape = weight.shape
+    flattened = weight.view(-1, original_shape[-1])
+
+    if flattened.shape[1] <= target_size:
+        return weight
+
+    U, S, V = torch.svd(flattened)
+    reduced = torch.mm(U[:, :target_size], torch.diag(S[:target_size]))
+
+    if reduced.shape[1] < target_size:
+        padding = torch.zeros(reduced.shape[0], target_size - reduced.shape[1], device=device)
+        reduced = torch.cat((reduced, padding), dim=1)
+
+    return reduced.view(original_shape[:-1] + (target_size,))
+
+
+def reduce_bias(bias, target_size):
+    bias = bias.to(device, torch.float32)
+    original_size = bias.shape[0]
+
+    if original_size <= target_size:
+        return torch.nn.functional.pad(bias, (0, target_size - original_size))
+    else:
+        return bias.view(-1, original_size // target_size).mean(dim=1)[:target_size]
+
+
+# Load your original state dict
+state_dict = load_file(
+    "/home/jaret/Dev/models/hf/PixArt-Sigma-XL-2-512_MS_t5large_raw/transformer/diffusion_pytorch_model.orig.safetensors")
+
+# Create a new state dict for the reduced model
+new_state_dict = {}
+
+source_hidden_size = 1152
+target_hidden_size = 1024
+
+for key, value in state_dict.items():
+    value = value.to(device, torch.float32)
+    if 'weight' in key or 'scale_shift_table' in key:
+        if value.shape[0] == source_hidden_size:
+            value = value[:target_hidden_size]
+        elif value.shape[0] == source_hidden_size * 4:
+            value = value[:target_hidden_size * 4]
+        elif value.shape[0] == source_hidden_size * 6:
+            value = value[:target_hidden_size * 6]
+
+        if len(value.shape) > 1 and value.shape[
+            1] == source_hidden_size and 'attn2.to_k.weight' not in key and 'attn2.to_v.weight' not in key:
+            value = value[:, :target_hidden_size]
+        elif len(value.shape) > 1 and value.shape[1] == source_hidden_size * 4:
+            value = value[:, :target_hidden_size * 4]
+
+    elif 'bias' in key:
+        if value.shape[0] == source_hidden_size:
+            value = value[:target_hidden_size]
+        elif value.shape[0] == source_hidden_size * 4:
+            value = value[:target_hidden_size * 4]
+        elif value.shape[0] == source_hidden_size * 6:
+            value = value[:target_hidden_size * 6]
+
+    new_state_dict[key] = value
+
+# Move all to CPU and convert to float16
+for key, value in new_state_dict.items():
+    new_state_dict[key] = value.cpu().to(torch.float16)
+
+# Save the new state dict
+save_file(new_state_dict,
+          "/home/jaret/Dev/models/hf/PixArt-Sigma-XL-2-512_MS_t5large_raw/transformer/diffusion_pytorch_model.safetensors",
+          metadata=meta)
+
+print("Done!")