能否提供一个完整可用的工程

[jinmin527]

我git clone bmtrain 0.2.2版本的代码，用bmtrain_qlora目录替换BMTrain中的bmtrain文件夹，然后进行python setup.py develop操作。测试的时候结果报错

import bmtrain
Traceback (most recent call last):
File "", line 1, in
File "/work/Qlora/BMTrain/bmtrain/init.py", line 2, in
from .init import init_distributed
File "/work/Qlora/BMTrain/bmtrain/init.py", line 8, in
from . import nccl
File "/work/Qlora/BMTrain/bmtrain/nccl/init.py", line 4, in
from .. import C
ImportError: cannot import name 'C' from partially initialized module 'bmtrain' (most likely due to a circular import) (/work/Qlora/BMTrain/bmtrain/init.py)

不确定是不是我将bmtrain目录覆盖导致的问题，能否提供一个类似于BMTrain完整的工程

[RanchiZhao]

OpenBMB/CPM-Bee#100
这是qlora的pr，还没有合，然后bmtrain不知道修复没有int8相关问题，未修复的时候需要本地魔改下BMTrain.blocklayer下面这处就可以了：
（blocklayer中不能很好地传requires_grad，需要手动判断dtype类型并设置requires_grad = False）

if dtype == torch.uint8:
    storage_param = torch.nn.Parameter(
    torch.tensor([], dtype=dtype, device=device).set_(storage_param_buffer),
    requires_grad = False,
)
else:
    storage_param = torch.nn.Parameter(
    torch.tensor([], dtype=dtype, device=device).set_(storage_param_buffer),
)