Error: illegal instruction

[Moses Hamm]

Hi,
I'm running SimVascular version 2023.3.27 with svFSI version 2023.5.25 using Ubuntu 20 on VirtualBox with OpenMPI. I'm following along with the cylinder tutorial in https://www.youtube.com/watch?v=N4AIL-z ... WL&index=1. After creating the input file and trying to run the simulation, I get the following error message:

[MAIN] cm.id: 0
Program received signal SIGILL: Illegal instruction.
Backtrace for this error:
#0 0x7f908df8fd11 in ???
#1 0x7f908df8eee5 in ???
#2 0x7f908da7208f in ???
at /build/glibc-LcI20x/glibc-2.31/signal/../sysdeps/unix/sysv/linux/x86_64/sigaction.c:0
#3 0x56270ea8115a in readfiles_
at /home/davep/software/svFSI/Code/Source/svFSI/READFILES.f:360
#4 0x56270ea11633 in MAIN__
at /home/davep/software/svFSI/Code/Source/svFSI/MAIN.f:72
#5 0x56270e928f1e in main
at /home/davep/software/svFSI/Code/Source/svFSI/MAIN.f:40

Please advise.
Thank you,
Moses

[David Parker]

Hi Moses,

It's not clear what may be causing the illegal instruction error. The error occurs while reading in simulation files so maybe those files are not valid. There may also be a problem with the compiler, svFSI was built using GCC 9.4.

Cheers,
Dave