LPT broken for new numpy

[brandonwkerns]

I created a new Conda environment based on the environment.yml provided in the repo. The new version of Numpy (2.4.3) is installed, and LPT breaks. Output with the error message:

. . .
N = 11 nodes left to check.
N = 8 nodes left to check.
N = 7 nodes left to check.
N = 4 nodes left to check.
N = 2 nodes left to check.
Will split groups in to separate, broken up LPTs.
--> LPT group 1 of 13
----> Found 1 LPT system.
100%|██████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████| 10/10 [00:00<00:00, 4429.98it/s]
multiprocessing.pool.RemoteTraceback: 
"""
TypeError: only 0-dimensional arrays can be converted to Python scalars

The above exception was the direct cause of the following exception:

Traceback (most recent call last):
  File "/glade/work/bkerns/conda-envs/ai_emulator_model_ar_verification/lib/python3.11/multiprocessing/pool.py", line 125, in worker
    result = (True, func(*args, **kwds))
                    ^^^^^^^^^^^^^^^^^^^
  File "/glade/work/bkerns/conda-envs/ai_emulator_model_ar_verification/lib/python3.11/multiprocessing/pool.py", line 51, in starmapstar
    return list(itertools.starmap(args[0], args[1]))
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/glade/u/home/bkerns/projects/ai_emulator_model_ar_verification/code/lpt-python-public/lpt/helpers.py", line 1417, in add_fields_to_a_TC
    TC_this['area'][tt] += OBJ['area']
    ~~~~~~~~~~~~~~~^^^^
ValueError: setting an array element with a sequence.
"""

The above exception was the direct cause of the following exception:

Traceback (most recent call last):
  File "/glade/u/home/bkerns/projects/ai_emulator_model_ar_verification/code/lpt-python-public/ar/lpt_run.lpt.arlid.py", line 265, in <module>
    lpt_driver(dataset,plotting,output,lpo_options,lpt_options, merge_split_options, mjo_id_options, sys.argv)
  File "/glade/u/home/bkerns/projects/ai_emulator_model_ar_verification/code/lpt-python-public/lpt/lpt_driver.py", line 145, in lpt_driver
    TIMECLUSTERS = lpt.helpers.calc_lpt_properties_break_up_merge_split(
                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/glade/u/home/bkerns/projects/ai_emulator_model_ar_verification/code/lpt-python-public/lpt/helpers.py", line 1758, in calc_lpt_properties_break_up_merge_split
    fields = p.starmap(
             ^^^^^^^^^^
  File "/glade/work/bkerns/conda-envs/ai_emulator_model_ar_verification/lib/python3.11/multiprocessing/pool.py", line 375, in starmap
    return self._map_async(func, iterable, starmapstar, chunksize).get()
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/glade/work/bkerns/conda-envs/ai_emulator_model_ar_verification/lib/python3.11/multiprocessing/pool.py", line 774, in get
    raise self._value
ValueError: setting an array element with a sequence.

When I run the same case on another machine, where the Python environment has Numpy 1.24.3, I do not get the error.

Google search suggests that the error occurs in newer versions of Numpy, because "ragged arrays" are deprecated. It seems Numpy is now more strict about array shapes.

[brandonwkerns]

As a test, I downgraded the Numpy on the new Conda environment to 1.24, and I did not get the error. The line in environment.yml: - numpy=1.24 instead of just - numpy.