delta nu 算数溢出？

Traceback (most recent call last):
  File "/mnt/stage/berrysoft/commission/FSMP/./fsmp.py", line 71, in <module>
    (flip, s0_history, Δν_history, nu_lc_history, op_history, creations) = batch(
                                                                           ^^^^^^
  File "/mnt/stage/berrysoft/commission/FSMP/analysis/fsmp/batch.py", line 196, in batch
    Δν += cp.asnumpy(Δν_g)
FloatingPointError: overflow encountered in add

在尝试复现一遍。

/cc @wuyy @heroxbd