Added default tolerance levels for regression checks for MBCC (#12006)

* Added tolerance level for assert_almost_equal for MBCC

* Nudge to CI

tests/nightly/model_backwards_compatibility_check/common.py

@@ -41,6 +41,8 @@
 backslash = '/'
 s3 = boto3.resource('s3')
 ctx = mx.cpu(0)
+atol_default = 1e-5
+rtol_default = 1e-5
 
 
 def get_model_path(model_name):

tests/nightly/model_backwards_compatibility_check/model_backwards_compat_inference.py

@@ -44,7 +44,7 @@ def test_module_checkpoint_api():
         old_inference_results = load_inference_results(model_name)
         inference_results = loaded_model.predict(data_iter)
         # Check whether they are equal or not ?
-        assert_almost_equal(inference_results.asnumpy(), old_inference_results.asnumpy())
+        assert_almost_equal(inference_results.asnumpy(), old_inference_results.asnumpy(), rtol=rtol_default, atol=atol_default)
         clean_model_files(model_files, model_name)
         logging.info('=================================')
 
@@ -69,7 +69,7 @@ def test_lenet_gluon_load_params_api():
         loaded_model.load_params(model_name + '-params')
         output = loaded_model(test_data)
         old_inference_results = mx.nd.load(model_name + '-inference')['inference']
-        assert_almost_equal(old_inference_results.asnumpy(), output.asnumpy())
+        assert_almost_equal(old_inference_results.asnumpy(), output.asnumpy(), rtol=rtol_default, atol=atol_default)
         clean_model_files(model_files, model_name)
         logging.info('=================================')
     logging.info('Assertion passed for model : %s' % model_name)
@@ -92,7 +92,7 @@ def test_lenet_gluon_hybrid_imports_api():
         loaded_model = gluon.SymbolBlock.imports(model_name + '-symbol.json', ['data'], model_name + '-0000.params')
         output = loaded_model(test_data)
         old_inference_results = mx.nd.load(model_name + '-inference')['inference']
-        assert_almost_equal(old_inference_results.asnumpy(), output.asnumpy())
+        assert_almost_equal(old_inference_results.asnumpy(), output.asnumpy(), rtol=rtol_default, atol=atol_default)
         clean_model_files(model_files, model_name)
         logging.info('=================================')
     logging.info('Assertion passed for model : %s' % model_name)
@@ -124,7 +124,7 @@ def test_lstm_gluon_load_parameters_api():
         loaded_model.load_parameters(model_name + '-params')
         output = loaded_model(test_data)
         old_inference_results = mx.nd.load(model_name + '-inference')['inference']
-        assert_almost_equal(old_inference_results.asnumpy(), output.asnumpy())
+        assert_almost_equal(old_inference_results.asnumpy(), output.asnumpy(), rtol=rtol_default, atol=atol_default)
         clean_model_files(model_files, model_name)
         logging.info('=================================')
     logging.info('Assertion passed for model : %s' % model_name)