fix bug of aparam size, should be nlocal_real

[amcadmus]

This PR fixes #1662

[codecov-commenter]

Codecov Report

Merging #1664 (d03a510) into devel (de7ba72) will decrease coverage by 11.86%.
The diff coverage is n/a.

❗ Current head d03a510 differs from pull request most recent head 62b886e. Consider uploading reports for the commit 62b886e to get more accurate results

@@             Coverage Diff             @@
##            devel    #1664       +/-   ##
===========================================
- Coverage   76.15%   64.28%   -11.87%     
===========================================
  Files          94        5       -89     
  Lines        7850       14     -7836     
===========================================
- Hits         5978        9     -5969     
+ Misses       1872        5     -1867     

Impacted Files	Coverage Δ
deepmd/fit/__init__.py
source/op/_prod_force_se_a_grad.py
deepmd/entrypoints/transfer.py
deepmd/model/model.py
deepmd/__main__.py
deepmd/train/trainer.py
deepmd/__init__.py
deepmd/infer/deep_eval.py
deepmd/loss/ener.py
deepmd/fit/polar.py
... and 79 more

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