Add validation for tensor_split size exceeding LLAMA_MAX_DEVICES (ggml-org#820)

* Add validation for tensor_split size exceeding LLAMA_MAX_DEVICES

* reword

Author: eric1932

llama_cpp/llama.py

@@ -308,6 +308,8 @@ def __init__(
         self.tensor_split = tensor_split
         self._p_tensor_split = None
         if self.tensor_split is not None:
+            if len(self.tensor_split) > llama_cpp.LLAMA_MAX_DEVICES:
+                raise ValueError(f"Attempt to split tensors that exceed maximum supported devices. Current LLAMA_MAX_DEVICES={llama_cpp.LLAMA_MAX_DEVICES}")
             # Type conversion and expand the list to the length of LLAMA_MAX_DEVICES
             FloatArray = ctypes.c_float * llama_cpp.LLAMA_MAX_DEVICES
             self._c_tensor_split = FloatArray(