Main branch error after merging #2704

[djeong20]

The NNTrainer main branch has an error after merging #2704.
The build error was resolved by #2714, but issues with failing unit tests remain. The details are as follows.

The output from the failed tests:

23/41 unittest_nntrainer_tensor_fp16          FAIL     0.37 s (exit status 1)
...
[  PASSED  ] 125 tests.
[  FAILED  ] 2 tests, listed below:
[  FAILED  ] nntrainer_Tensor.dot_06_p
[  FAILED  ] nntrainer_Tensor.dot_transpose_p

 2 FAILED TESTS
-------

27/41 unittest_layers                         FAIL     0.37 s (killed by signal 11 SIGSEGV)
...
[----------] 3 tests from FullyConnected16/LayerGoldenTest
[ RUN      ] FullyConnected16/LayerGoldenTest.run/0
 ** On entry to SGEMM  parameter number 13 had an illegal value
 ** On entry to SGEMM  parameter number 10 had an illegal value
../test/unittest/layers/layers_golden_tests.cpp:236: Failure
Expected: ((cos_sim)) >= ((1 - cos_sim_range)), actual: 0.766846 vs 0.99999
../test/unittest/layers/layers_golden_tests.cpp:241: Failure
Expected: ((mean_squared_error)) <= ((mse_range)), actual: 19.4233 vs 0.015
../test/unittest/layers/layers_golden_tests.cpp:296: Failure
Value of: compare_percentage_tensors(tensor, answer, match_percentage, skip_cos_sim)
  Actual: false
Expected: true
outputs at 0
../test/unittest/layers/layers_golden_tests.cpp:241: Failure
Expected: ((mean_squared_error)) <= ((mse_range)), actual: 772.4 vs 0.05
../test/unittest/layers/layers_golden_tests.cpp:241: Failure
Expected: ((mean_squared_error)) <= ((mse_range)), actual: 1.97871 vs 0.03
-------

PTAL @skykongkong8

[taos-ci]

cibot: Thank you for posting issue #2715. The person in charge will reply soon.

[djeong20]

Additionally, current GitHub Action meson_test (ubuntu-20.04, -Denable-fp16=true) is not functioning correctly. It is built and run without enabling fp16. (fp16 unit tests cannot be found)