[BUG] set_prefix doesn't work for both TF and PT

[njzjz]

Bug summary

set_prefix cannot be changed to other values except set in both TensorFlow and PyTorch backends.

We should remove such an option, or allow it to exist for compatibility but disallow other options and update the documentation.

DeePMD-kit Version

v3.0.0a0-28-ged831c88

TensorFlow Version

PT v2.2.0+cu121-g8ac9b20d4b0

How did you download the software?

Built from source

Input Files, Running Commands, Error Log, etc.

The get_data method doesn't have this argument, as shown below.

Traceback (most recent call last):
  File "/home/jz748/anaconda3/bin/dp", line 8, in <module>
    sys.exit(main())
  File "/home/jz748/codes/deepmd-kit/deepmd/main.py", line 807, in main
    deepmd_main(args)
  File "/home/jz748/codes/deepmd-kit/deepmd/tf/entrypoints/main.py", line 72, in main
    train_dp(**dict_args)
  File "/home/jz748/codes/deepmd-kit/deepmd/tf/entrypoints/train.py", line 153, in train
    _do_work(jdata, run_opt, is_compress)
  File "/home/jz748/codes/deepmd-kit/deepmd/tf/entrypoints/train.py", line 205, in _do_work
    train_data = get_data(
  File "/home/jz748/codes/deepmd-kit/deepmd/utils/data_system.py", line 798, in get_data
    data = DeepmdDataSystem(
  File "/home/jz748/codes/deepmd-kit/deepmd/utils/data_system.py", line 112, in __init__
    DeepmdData(
  File "/home/jz748/codes/deepmd-kit/deepmd/utils/data.py", line 66, in __init__
    raise FileNotFoundError(f"No {set_prefix}.* is found in {sys_path}")
FileNotFoundError: No set.* is found in ../data/data_0/

Steps to Reproduce

cd examples/water/data

Change the prefix of all training data from set to haha.

Then go to

cd examples/water/se_atten

Add set_prefix option:

diff --git a/examples/water/se_atten/input.json b/examples/water/se_atten/input.json
index bfd6d48c..e3362fdd 100644
--- a/examples/water/se_atten/input.json
+++ b/examples/water/se_atten/input.json
@@ -66,6 +66,7 @@
         "../data/data_2/"
       ],
       "batch_size": "auto",
+         "set_prefix": "haha",
       "_comment7": "that's all"
     },
     "validation_data": {
@@ -74,6 +75,7 @@
       ],
       "batch_size": 1,
       "numb_btch": 3,
+         "set_prefix": "haha",
       "_comment8": "that's all"
     },
     "numb_steps": 1000000,

dp train input.json

Further Information, Files, and Links

No response

[iProzd]

We will remove support for set_prefix.