In [1]: import torch
   ...: dtypes = [torch.bool, torch.int8, torch.int32, torch.bfloat16, torch.float32, torch.float64]
   ...: for dtype in dtypes:
   ...:     a = torch.tensor([], dtype=dtype)
   ...:     a_sum = a.sum()
   ...:     if a.dtype != a_sum.dtype:
   ...:         print(f"t.dtype != t.sum().dtype, got {a.dtype} != {a_sum.dtype}")
   ...: 
t.dtype != t.sum().dtype, got torch.bool != torch.int64
t.dtype != t.sum().dtype, got torch.int8 != torch.int64
t.dtype != t.sum().dtype, got torch.int32 != torch.int64