Integrating Keras capabilities to OPM

CMakeLists_files.cmake

@@ -75,6 +75,7 @@ list (APPEND MAIN_SOURCE_FILES
       opm/material/fluidsystems/blackoilpvt/WaterPvtThermal.cpp
       opm/material/fluidsystems/blackoilpvt/WetGasPvt.cpp
       opm/material/fluidsystems/blackoilpvt/WetHumidGasPvt.cpp
+      opm/ml/ml_model.cpp
 )
 if(ENABLE_ECL_INPUT)
   list(APPEND MAIN_SOURCE_FILES
@@ -474,6 +475,7 @@ list (APPEND TEST_SOURCE_FILES
       tests/material/test_spline.cpp
       tests/material/test_tabulation.cpp
       tests/test_Visitor.cpp
+      tests/ml/ml_model_test.cpp
 )
 
 # tests that need to be linked to dune-common
@@ -646,6 +648,15 @@ list (APPEND TEST_DATA_FILES
       tests/material/co2_unittest_below_sat.json
       tests/material/h2o_unittest.json
       tests/material/h2_unittest.json
+      tests/ml/ml_tools/models/test_dense_1x1.model
+      tests/ml/ml_tools/models/test_dense_2x2.model
+      tests/ml/ml_tools/models/test_dense_10x1.model
+      tests/ml/ml_tools/models/test_dense_10x10.model
+      tests/ml/ml_tools/models/test_dense_10x10x10.model
+      tests/ml/ml_tools/models/test_dense_relu_10.model
+      tests/ml/ml_tools/models/test_dense_tanh_10.model
+      tests/ml/ml_tools/models/test_relu_10.model
+      tests/ml/ml_tools/models/test_scalingdense_10x1.model
 )
 if(ENABLE_ECL_OUTPUT)
   list (APPEND TEST_DATA_FILES
@@ -1054,6 +1065,7 @@ list( APPEND PUBLIC_HEADER_FILES
       opm/material/thermal/SomertonThermalConductionLaw.hpp
       opm/material/thermal/EclSpecrockLaw.hpp
       opm/material/thermal/NullSolidEnergyLaw.hpp
+      opm/ml/ml_model.hpp
 )
 
 if(ENABLE_ECL_INPUT)

opm/ml/README.md

@@ -0,0 +1,22 @@
+These ML modules are heavily modifiying and extending the previous work done in Kerasify by Maevskikh and Rose. Kerasify is a library for running trained Keras models from a C++ platform. Our implementation is also compliant with the automatic differentiation approach used in OPM. The implementation works with Python v.3.9.0 and above (up to <=3.12.0).
+
+
+-Unit tests are generated by:
+
+$ python3 generateunittests.py
+
+
+-To compile run the unit tests:
+
+$ make ml_model_test
+$ ./bin/ml_model_test
+TEST tensor_test
+TEST dense_1x1
+TEST dense_10x1
+TEST dense_2x2
+TEST dense_10x10
+TEST dense_10x10x10
+TEST relu_10
+TEST dense_relu_10
+TEST dense_tanh_10
+TEST scalingdense_10x1