invalid logical input to read SumPrint

[luiskras-dev]

Hello everyone,

I'm having persistent issues trying to run several NREL onshore wind turbine models (for instance, NREL-2.8-127) with OpenFAST v4.1.2.
All four turbine models I've tried fail with the same SumPrint error during initialization, despite the IEA 3.4-130-RWT model working perfectly.

What I've Tried:
Setting SumPrint to both True and False
Using the Echo feature for debugging
Testing both the latest models and legacy versions
Resolved previous MHK-related errors, but stuck on this one

Current Situation:
OpenFAST Version: v4.1.2
Working model: IEA 3.4-130-RWT
Failing models: NREL-2p3-116, NREL-2.8-127, and two others
Error: "Invalid logical input for file occurred while trying to read SumPrint"

I would think to be unexpected to have compatibility issues since I'm using the latest OpenFAST version with what should be compatible models. Has anyone else encountered this specific SumPrint problem with the NREL models? Any suggestions for resolving this or insights into version compatibility would be greatly appreciated.

Thank you!

Log:
penfast NREL-2p8-127-HH120.fst

---

OpenFAST

Copyright (C) 2025 National Renewable Energy Laboratory
Copyright (C) 2025 Envision Energy USA LTD

This program is licensed under Apache License Version 2.0 and comes with ABSOLUTELY NO WARRANTY.
See the "LICENSE" file distributed with this software for details.

---

OpenFAST-v4.1.2
Compile Info:

• Compiler: GCC version 14.3.0
• Architecture: 64 bit
• Precision: single
• OpenMP: No
• Date: Oct 2 2025
• Time: 20:54:00
  Execution Info:
• Date: 10/14/2025
• Time: 16:32:00-0300

OpenFAST input file heading:
Generated with AeroElasticSE FAST driver

FAST_InitializeAll:FAST_Init:FAST_ReadPrimaryFile:Invalid logical input for file
"NREL-2p8-127-HH120.fst" occurred while trying to read SumPrint.

OpenFAST encountered an error during module initialization.
Simulation error level: FATAL ERROR

Aborting OpenFAST.

.fst file that i have made the MHK modifications

------ OpenFAST INPUT FILE -------------------------------------------
Generated with AeroElasticSE FAST driver
---------------------- SIMULATION CONTROL --------------------------------------
True Echo - Echo input data to .ech (flag)
"FATAL" AbortLevel - Error level when simulation should abort (string) {"WARNING", "SEVERE", "FATAL"}
720.0 TMax - Total run time (s)
0.01 DT - Recommended module time step (s)
2 InterpOrder - Interpolation order for input/output time history (-) {1=linear, 2=quadratic}
0 NumCrctn - Number of correction iterations (-) {0=explicit calculation, i.e., no corrections}
99999.0 DT_UJac - Time between calls to get Jacobians (s)
1000000.0 UJacSclFact - Scaling factor used in Jacobians (-)
---------------------- FEATURE SWITCHES AND FLAGS ------------------------------
1 CompElast - Compute structural dynamics (switch) {1=ElastoDyn; 2=ElastoDyn + BeamDyn for blades}
1 CompInflow - Compute inflow wind velocities (switch) {0=still air; 1=InflowWind; 2=external from OpenFOAM}
2 CompAero - Compute aerodynamic loads (switch) {0=None; 1=AeroDyn v14; 2=AeroDyn v15}
1 CompServo - Compute control and electrical-drive dynamics (switch) {0=None; 1=ServoDyn}
0 CompSeaSt - Compute sea state information (switch) {0=None; 1=SeaState}
0 CompHydro - Compute hydrodynamic loads (switch) {0=None; 1=HydroDyn}
0 CompSub - Compute sub-structural dynamics (switch) {0=None; 1=SubDyn; 2=External Platform MCKF}
0 CompMooring - Compute mooring system (switch) {0=None; 1=MAP++; 2=FEAMooring; 3=MoorDyn; 4=OrcaFlex}
0 CompIce - Compute ice loads (switch) {0=None; 1=IceFloe; 2=IceDyn}
0 MHK - MHK turbine type (switch) {0=Not an MHK turbine; 1=Fixed MHK turbine; 2=Floating MHK turbine}
---------------------- ENVIRONMENTAL CONDITIONS --------------------------------
9.81 Gravity - Gravitational acceleration (m/s^2)
1.225 AirDens - Air density (kg/m^3)
1025 WtrDens - Water density (kg/m^3)
1.464e-05 KinVisc - Kinematic viscosity of working fluid (m^2/s)
335 SpdSound - Speed of sound in working fluid (m/s)
103500 Patm - Atmospheric pressure (Pa) [used only for an MHK turbine cavitation check]
1700 Pvap - Vapour pressure of working fluid (Pa) [used only for an MHK turbine cavitation check]
300 WtrDpth - Water depth (m)
0 MSL2SWL - Offset between still-water level and mean sea level (m) [positive upward]
---------------------- INPUT FILES ---------------------------------------------
"NREL-2p3-116_ElastoDyn.dat" EDFile - Name of file containing ElastoDyn input parameters (quoted string)
"none" BDBldFile(1) - Name of file containing BeamDyn input parameters for blade 1 (quoted string)
"none" BDBldFile(2) - Name of file containing BeamDyn input parameters for blade 2 (quoted string)
"none" BDBldFile(3) - Name of file containing BeamDyn input parameters for blade 3 (quoted string)
"NREL-2p3-116_InflowFile.dat" InflowFile - Name of file containing inflow wind input parameters (quoted string)
"NREL-2p3-116_AeroDyn15.dat" AeroFile - Name of file containing aerodynamic input parameters (quoted string)
"NREL-2p3-116_ServoDyn.dat" ServoFile - Name of file containing control and electrical-drive input parameters (quoted string)
"none" HydroFile - Name of file containing hydrodynamic input parameters (quoted string)
"none" SubFile - Name of file containing sub-structural input parameters (quoted string)
"none" MooringFile - Name of file containing mooring system input parameters (quoted string)
"none" IceFile - Name of file containing ice input parameters (quoted string)
---------------------- OUTPUT --------------------------------------------------
False SumPrint - Print summary data to ".sum" (flag)
10.0 SttsTime - Amount of time between screen status messages (s)
99999.0 ChkptTime - Amount of time between creating checkpoint files for potential restart (s)
Default DT_Out - Time step for tabular output (s) (or "default")
120.0 TStart - Time to begin tabular output (s)
1 OutFileFmt - Format for tabular (time-marching) output file (switch) {1: text file [.out], 2: binary file [.outb], 3: both}
True TabDelim - Use tab delimiters in text tabular output file? (flag) {uses spaces if false}
"ES10.3E2" OutFmt - Format used for text tabular output, excluding the time channel. Resulting field should be 10 characters. (quoted string)

[andrew-platt]

Dear @luiskras-dev ,

You are missing the line for the SeaStFile on line number 41 (between ServoFile and _HydroFile).

Try adding the following:

"SeaState.dat"    SeaStFile       - Name of file containing sea state input parameters (quoted string)

See https://github.com/OpenFAST/r-test/blob/main/glue-codes/openfast/MHK_RM1_Floating/MHK_RM1_Floating.fst for comparison.

Regards,

[luiskras-dev]

Hi Dear @andrew-platt, Thanks for your fast reply. Your recommendation, plus copying the github files made me get through two problems (Sumprint and linearize), but now i get a fatal error in ElastoDyn.

Running ElastoDyn.

FAST_InitializeAll:ED_Init:ED_ReadInput:ReadPrimaryFile:Invalid numerical input for file
"./NREL-2p3-116_ElastoDyn.dat" occurred while trying to read PtfmXYIner.

and now i am stuck, as there is no ptfmXYiner, only ptfm(R,P,Y)iner and i got some results telling to alter the plataform model, but no plataform model too for NREL-2p3-116

[jjonkman]

Dear @luiskras-dev,

ElastoDyn input PtfmXYIner (and similar inputs for YZ and XZ) were added in OpenFAST v4. It sounds like you are using input files formatted for an earlier version of OpenFAST, but using a newer version of OpenFAST. The input file changes with each release of OpenFAST are documented here: https://openfast.readthedocs.io/en/main/source/user/api_change.html. And if you need more guidance, I would enable the Echo option to debug issues associated with input file formatting.

Best regards,

[luiskras-dev]

oh, thanks for the reply, it helped me get through some of the errors

I was using the NREL models from https://github.com/NREL/openfast-turbine-models/tree/main/IEA-scaled and tried to adapt using https://github.com/OpenFAST/r-test/tree/main/glue-codes/openfast/MinimalExample, but i get one error after the other
Maybe i will stick to the IEA 3.4MW model for now before attempting more adaptations of the formatting of previous models.

If it's not too much trouble, could you please point me towards any turbine models that are already adapted for OpenFAST v4? Alternatively, could you tell me which version the models in the openfast-turbine-models and r-test repositories are designed for? Is it feasible to use a previous version of OpenFAST, or is it better to stick with v4?

Thank you again for your guidance!"

[andrew-platt]

Dear @luiskras-dev,

I forgot we had the https://github.com/OpenFAST/r-test/tree/main/glue-codes/openfast/MinimalExample example. That isn't part of our integration testing, so it hasn't been updated in a very long time.

We will either add that to our testing, or remove it to avoid future confusion.

The other models in the https://github.com/OpenFAST/r-test/tree/main/glue-codes/openfast/ are up to date with OpenFAST v4.1.2 (OpenFAST main), so you can use them as references.

Regards,