code: def copyin(self, dest, src: memoryview):
      pass
  
file_path: tinygrad/test/external/external_test_speed_llama.py
imports: import unittest, time
  from examples.llama import Transformer, MODEL_PARAMS
  from tinygrad.tensor import Tensor
  from tinygrad import Device
  from tinygrad.nn.state import get_state_dict
  from tinygrad.device import Compiled, Allocator
  from tinygrad.helpers import Profiling
label_desc: Use image node_id 2 for calling the FakeAllocator obj's underlying member method code with example usage: obj.copyin(dest, src) without return types