Method hash

tinygrad/tensor.py:1167–1182

Calculates a 16-byte hash of the tensor. ```python exec="false source="above" session="tensor" result="python" t = Tensor(b"Hello World!").hash() print(t.data().hex()) ```

(self)

    return self.reshape(-1, 4096).keccak("shake_128").reshape(self.shape[0], -1).keccak("shake_128")

  def hash(self) -> Tensor:
    """
    Calculates a 16-byte hash of the tensor.
    ```python exec="false source="above" session="tensor" result="python"
    t = Tensor(b"Hello World!").hash()
    print(t.data().hex())
    ```
    """
    data = self.flatten().bitcast(dtypes.uint8)
    n = data.shape[0]
    assert isinstance(n, int), "hash requires concrete shape"
    chunks = ceildiv(n, 2**20)
    while chunks > 1:
      data = data.pad_to(chunks * 2**20).reshape(chunks, 2**20)._hash_1mb().flatten()
      chunks = ceildiv(chunks, 65536)
    return data.pad_to(2**20).unsqueeze(0)._hash_1mb().flatten()[:16]

  # ***** processing ops *****