failing unit test test_extrema

[ajpotts]

Describe the bug
The unit test test_extrema fails locally with size >= 10**5 for dtype=int64.

To Reproduce
Steps to reproduce the behavior:
make test size=10**5

Expected behavior
The test passes.

Error Message

Started arkouda_server in TEST_CLASS mode with host: localhost port: 5555 locales: 1
connected to arkouda server tcp://*:5555
FAILED          [  9%][Arkouda Client] Line 559 DEBUG: sending message RequestMessage(user='amandapotts', token=None, cmd='array<int64,1>', format=BINARY, args='["{\\"key\\": \\"dtype\\", \\"dtype\\": \\"str\\", \\"val\\": \\"int64\\"}", "{\\"key\\": \\"shape\\", \\"dtype\\": \\"int64\\", \\"val\\": \\"[\\\\\\"100000\\\\\\"]\\"}", "{\\"key\\": \\"seg_string\\", \\"dtype\\": \\"bool\\", \\"val\\": \\"False\\"}"]', size=3)
[pdarrayclass] Line 2641 DEBUG: created Chapel array with name: id_GptZ0Jz_1 dtype: int64 size: 100000 ndim: 1 shape: [100000] itemsize: 8
[pdarrayclass] Line 2641 DEBUG: created Chapel array with name: id_GptZ0Jz_2 dtype: int64 size: 100000 ndim: 1 shape: [100000] itemsize: 8
[pdarrayclass] Line 2641 DEBUG: created Chapel array with name: id_GptZ0Jz_3 dtype: int64 size: 50000 ndim: 1 shape: [50000] itemsize: 8
[pdarrayclass] Line 2641 DEBUG: created Chapel array with name: id_GptZ0Jz_4 dtype: int64 size: 50000 ndim: 1 shape: [50000] itemsize: 8
[pdarrayclass] Line 2641 DEBUG: created Chapel array with name: id_GptZ0Jz_5 dtype: bool size: 50000 ndim: 1 shape: [50000] itemsize: 1
[pdarrayclass] Line 400 DEBUG: deleting pdarray with name id_GptZ0Jz_3
[pdarrayclass] Line 400 DEBUG: deleting pdarray with name id_GptZ0Jz_4
[pdarrayclass] Line 400 DEBUG: deleting pdarray with name id_GptZ0Jz_5
[pdarrayclass] Line 2641 DEBUG: created Chapel array with name: id_GptZ0Jz_6 dtype: int64 size: 50000 ndim: 1 shape: [50000] itemsize: 8
[pdarrayclass] Line 2641 DEBUG: created Chapel array with name: id_GptZ0Jz_7 dtype: int64 size: 50000 ndim: 1 shape: [50000] itemsize: 8
[pdarrayclass] Line 400 DEBUG: deleting pdarray with name id_GptZ0Jz_6
[pdarrayclass] Line 2641 DEBUG: created Chapel array with name: id_GptZ0Jz_8 dtype: int64 size: 50000 ndim: 1 shape: [50000] itemsize: 8
[pdarrayclass] Line 2641 DEBUG: created Chapel array with name: id_GptZ0Jz_9 dtype: bool size: 50000 ndim: 1 shape: [50000] itemsize: 1

tests/extrema_test.py:44 (TestExtrema.test_extrema[int64-100000])
array([-4294964121 -4294911077 -4294859677 ... -7310645 -7276619 -7207235]) != array([-4294964121 -4294911077 -4294859677 ... 8349054 8416966 8641865])

Expected :array([-4294964121 -4294911077 -4294859677 ... 8349054 8416966 8641865])
Actual   :array([-4294964121 -4294911077 -4294859677 ... -7310645 -7276619 -7207235])
<Click to see difference>

self = <extrema_test.TestExtrema object at 0x7f431ce542f0>, prob_size = 100000
dtype = 'int64'

    @pytest.mark.parametrize("prob_size", pytest.prob_size)
    @pytest.mark.parametrize("dtype", ["int64", "uint64", "float64"])
    def test_extrema(self, prob_size, dtype):
        pda = ak.array(make_np_arrays(prob_size, dtype))
        ak_sorted = ak.sort(pda)
        K = prob_size // 2
    
        # compare minimums against first K elements from sorted array
        assert (ak.mink(pda, K) == ak_sorted[:K]).all()
>       assert (pda[ak.argmink(pda, K)] == ak_sorted[:K]).all()
E       assert False
E        +  where False = all()
E        +    where all = array([-4294964121 -4294911077 -4294859677 ... -7310645 -7276619 -7207235]) == array([-4294964121 -4294911077 -4294859677 ... 8349054 8416966 8641865]).all

Is this a Blocking Issue
Unknown.

ak.get_config() Output

In [5]: ak.get_config()
Out[5]: 
{'arkoudaVersion': 'v2024.10.02+52.g586d10610.dirty',
 'chplVersion': '2.0.0',
 'ZMQVersion': '4.3.5',
 'HDF5Version': '1.14.3',
 'serverHostname': 'pop-os',
 'ServerPort': 5555,
 'numLocales': 1,
 'numPUs': 8,
 'maxTaskPar': 8,
 'physicalMemory': 67257028608,
 'distributionType': 'domain(1,int(64),one)',
 'LocaleConfigs': [{'id': 0,
   'name': 'pop-os',
   'numPUs': 8,
   'maxTaskPar': 8,
   'physicalMemory': 67257028608}],
 'authenticate': False,
 'logLevel': 'INFO',
 'logChannel': 'CONSOLE',
 'regexMaxCaptures': 20,
 'byteorder': 'little',
 'autoShutdown': False,
 'serverInfoNoSplash': False,
 'maxArrayDims': 3,
 'ARROW_VERSION': '18.1.0'}

Additional context
N/A