pytorch: add gguf-info.py script to read GGUF files

Author: danbev

fundamentals/pytorch/src/gguf-info.py

@@ -0,0 +1,30 @@
+import torch
+from gguf import GGUFReader
+
+def print_tensors(r: GGUFReader):
+    print(f"Total number of tensors: {len(r.tensors)}\n")
+    for tensor in r.tensors:
+        print(f"Name: {tensor.name}")
+        print(f"  shape: {tensor.shape}, type: {tensor.tensor_type}, elements: {tensor.n_elements}")
+
+def print_tensor(r: GGUFReader, name: str):
+    tensor = next(t for t in r.tensors if t.name == name)
+    print(f"Tensor: {tensor.name}")
+    print(f"  shape: {tensor.shape}, type: {tensor.tensor_type}, elements: {tensor.n_elements}")
+    print(f"  data:\n{tensor.data}")
+
+def print_field(r: GGUFReader, field_name: str):
+    field = r.get_field(field_name)
+    print(f"Field: {field_name}")
+    print(f"  contents: {field.contents()}")
+    print(f"  type: {type(field)}, value: {field}")
+
+def main():
+    gguf_path = "/home/danbev/work/ai/llama.cpp/models/granite-4.0-h-tiny-Q4_0.gguf"
+    r = GGUFReader(gguf_path)
+    #print_tensors(r)
+    print_tensor(r, "blk.39.ssm_in.weight")
+
+    print_field(r, "granitehybrid.expert_used_count")
+if __name__ == "__main__":
+    main()