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r-test

This repository serves as a container for regression test data for system-level and module-level testing of OpenFAST. The repository contains:

  • Input files for test case execution
  • Baseline solutions for various machine and compiler combinations
  • Turbine models used in the regression test cases

The baseline solutions serve as "gold standards" for the regression test suite and are updated periodically as OpenFAST and it's modules are improved.

Module tests

A partion of the OpenFAST physics modules contain regression tests. These modules include a driver-code that runs the module in stand-alone mode rather than coupled through the OpenFAST glue-code.

The module-level tests are found in r-test/modules/.

Full system tests

The majority of the existing tests are system-level tests for the OpenFAST glue-code and are found in r-test/glue-codes/.

The tests are realistic cases initially taken from the GL certification process and formerly known as the FAST V8 CertTests. As physics models are changed or improved, we continuously update the tests cases to capture new features and conform to the new input file specification. Each test case directory contains the OpenFAST input file, .fst, and all other case-specific inputs. All turbine-specific inputs are linked by relative paths to their corresponding turbine data directory. See the individual test case README's for more information regarding the particular turbine model and portion of the OpenFAST system that is being tested.

The included turbine model are listed below.

Turbine Name Description and Info
5MW_Baseline NREL offshore 5-MW baseline wind turbine
AOC Atlantic Orient Company 15/50 wind turbine
AWT27 Advanced Wind Turbine program blade 27
SWRT Small Wind Research Turbine
UAE_VI Unsteady Aerodynamics Experiment research wind turbine
WP_Baseline WindPACT 1.5-MW baseline wind turbine

For reference, a mapping of the legacy CertTest case naming scheme from TestNN to the current test names is given below.

Legacy Current
Test01 AWT_YFix_WSt
Test02 AWT_WSt_StartUp_HighSpShutDown
Test03 AWT_YFree_WSt
Test04 AWT_YFree_WTurb
Test05 AWT_WSt_StartUpShutDown
Test06 AOC_WSt
Test07 AOC_YFree_WTurb
Test08 AOC_YFix_WSt
Test09 UAE_Dnwind_YRamp_WSt
Test10 UAE_Upwind_Rigid_WRamp_PwrCurve
Test11 WP_VSP_WTurb_PitchFail
Test12 WP_VSP_ECD
Test13 WP_VSP_WTurb
Test14 WP_Stationary_Linear
Test15 SWRT_YFree_VS_EDG01
Test16 SWRT_YFree_VS_EDC01
Test17 SWRT_YFree_VS_WTurb
Test18 5MW_Land_DLL_WTurb
Test19 5MW_OC3Mnpl_DLL_WTurb_WavesIrr
Test20 5MW_OC3Trpd_DLL_WSt_WavesReg
Test21 5MW_OC4Jckt_DLL_WTurb_WavesIrr_MGrowth
Test22 5MW_ITIBarge_DLL_WTurb_WavesIrr
Test23 5MW_TLP_DLL_WTurb_WavesIrr_WavesMulti
Test24 5MW_OC3Spar_DLL_WTurb_WavesIrr
Test25 5MW_OC4Semi_WSt_WavesWN
Test26 5MW_Land_BD_DLL_WTurb

Baselines

The regression test compares locally generated solutions to the baseline solutions generated on a series of system and compiler combinations. Currently, the supported system/compiler combinations for successful regression testing along with the toolsets use are given below.

System-Compiler System Version Compiler Math Library
windows-intel Windows 10 V 2004 Intel OneAPI 2021 Intel MKL 2021
linux-intel Ubuntu 20.04 (WSL) Intel OneAPI 2021 Intel MKL 2021
linux-gnu Ubuntu 20.04 (WSL) GNU Fortran 10.2 (APT) liblapack (APT)
macos-gnu macOS 10.15.7 GNU Fortran 10.2 (Brew) Accelerate

The regression test only supports double precision solutions, so all baseline solutions are generated with a double precision build.

Updating the baselines

The baseline directories can be updated with the included updateBaselineSolutions.py. This script copies locally generated OpenFAST solutions into the appropriate system - compiler baseline solution directory.

Usage:

python updateBaselineSolutions.py source_directory target_directory system_name compiler_id

Example:

# Move into the r-test submodule
cd openfast/reg_tests/r-test

#       updateBaselineSolutions.py  source_directory                        target_directory     system_name           compiler_id
#                                                                                                Darwin,Linux,Windows  Intel,GNU
python  updateBaselineSolutions.py  ../build/reg_tests/glue-codes/openfast  glue-codes/openfast  Linux                 GNU

NOTE: External ServoDyn controllers for 5MW_Baseline cases

The cases using the 5MW turbine require an external controller for ServoDyn. The source code for three external controllers are provided, but they must be compiled and installed.

On Linux and Mac, cmake projects exist to compile the controllers with make. For Windows systems, cmake can generate a Visual Studio project to compile and install the controllers.

For all system types, create build directories at

r-test/glue-codes/openfast/5MW_Baseline/ServoData/DISCON/build
r-test/glue-codes/openfast/5MW_Baseline/ServoData/DISCON_ITI/build
r-test/glue-codes/openfast/5MW_Baseline/ServoData/DISCON_OC3/build

and run cmake .. in each one. For Windows, add your Visual Studio version and architecture in the following command:

cmake -G "Visual Studio 14 2015 Win64" ..

Ultimately, three .dll libraries should be compiled and placed in the 5MW_Baseline parallel to the test cases that will be executed. For example, if the regression test is executed automatically with ctest or manualRegressionTest.py, all case files will be copied to openfast/build. In this case, these three controller libraries must exist:

openfast/build/reg_tests/glue-codes/openfast/5MW_Baseline/ServoData/DISCON.dll
openfast/build/reg_tests/glue-codes/openfast/5MW_Baseline/ServoData/DISCON_ITIBarge.dll
openfast/build/reg_tests/glue-codes/openfast/5MW_Baseline/ServoData/DISCON_OC3Hywind.dll

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