Turning off HydroDyn Summary file causes Segmentation Fault

[evan-gaertner]

I came across this bug trying to run a large number of FAST simulations. My HydroDyn summary files for the OC3/Hywind spar are about ~4MB due to its long joint, member, and radiation tables. I would like to avoid printing this since it eats up valuable disk space on my cluster allocation. However, setting "HDSum" to "False" results in a Segmentation fault. The model otherwise runs fine when set to "True"

Error occurred on the following builds:
Windows, compiles with Cygwin, single precision, 64 bit, release mode, openfast-v2 and dev
Linux, gcc 8.1.0, single precision, 64 bit, release mode, openfast-v2 and dev

Using the "5MW_OC3Spar_DLL_WTurb_WavesIrr" model from r-test

OpenFAST input file heading:
FAST Certification Test #24: NREL 5.0 MW Baseline Wind Turbine with OC3 Hywind Configuration,
for use in offshore analysis

Running ElastoDyn.
Running AeroDyn.
Running AirfoilInfo.
Running BEM.
Running UnsteadyAero.
Warning: Turning off Unsteady Aerodynamics because C_nalpha is 0. BladeNode = 1, Blade = 1
Warning: Turning off Unsteady Aerodynamics because C_nalpha is 0. BladeNode = 1, Blade = 2
Warning: Turning off Unsteady Aerodynamics because C_nalpha is 0. BladeNode = 1, Blade = 3
Running InflowWind.
Running ServoDyn.
Running ServoDyn Interface for Bladed Controllers.
Running HydroDyn.
Generating incident wave kinematics and current time history.
Reading in WAMIT output with root name
"C:\Users\egaertne\OptFAST\temp\testing0x6_5\nrel5mw_spar\HydroData/Spar".
Computing radiation impulse response functions and wave diffraction forces.

Program received signal SIGSEGV: Segmentation fault - invalid memory reference.

Backtrace for this error:
#0 0xffffffffffffffff in ???
#1 0xffffffffffffffff in ???
#2 0xffffffffffffffff in ???
#3 0xffffffffffffffff in ???
#4 0xffffffffffffffff in ???
#5 0xffffffffffffffff in ???
#6 0xffffffffffffffff in ???
#7 0xffffffffffffffff in ???
#8 0xffffffffffffffff in ???
#9 0xffffffffffffffff in ???
#10 0xffffffffffffffff in ???
#11 0xffffffffffffffff in ???
#12 0xffffffffffffffff in ???
#13 0xffffffffffffffff in ???
#14 0xffffffffffffffff in ???
#15 0xffffffffffffffff in ???
#16 0xffffffffffffffff in ???
#17 0xffffffffffffffff in ???
#18 0xffffffffffffffff in ???
#19 0xffffffffffffffff in ???
3 [main] openfast 4460 cygwin_exception::open_stackdumpfile: Dumping stack trace to openfast.exe.stackdump

[rafmudaf]

@evan-gaertner are you on the latest commit on the dev branch? This bug was fixed in #207.

I'm closing this issue, but please reopen if this is indeed still a bug.

[evan-gaertner]

Ah you're absolutely right, I was a couple of commits behind. Sorry to bug you with this!

Thanks as always,
Evan