code: def setUp(self):
      self.old_pool = cupy.get_default_memory_pool()
      self.pool = cupy.cuda.MemoryPool()
      cupy.cuda.set_allocator(self.pool.malloc)
  
imports: import unittest
  import pytest
  import cupy
  from cupy import cuda
  from cupy import testing
label_desc: Use image node_id 1 for calling the TestDLTensorMemory obj's underlying member method code with example usage: obj.setUp() without return types