I have been writing Fortran code for engineering research applications for a few years now. I have now encountered a problem that seems rather silly, but I cannot get to the root of it!
I am using using Intel Fortran Compiler in Linux Debian with OpenMP.
My code is basically an iterative process with time marching numerical integrators and numerical solutions to Reynolds' equation. To solve the latter, I have used the Effective Influence Method with Gauss-Seidel iterations. These require relaxation parameters and convergence criteria to achieve a desired solution. The code works absolutely fine for some conditions.
The problem starts when I have to tighten the convergence criteria and relaxation parameters. At this point, the results would look acceptable, with no evident errors. However, at some point it would simply decide to stop working, giving the following error:
forrtl: No such file or directory
forrtl: severe (29): file not found, unit 41, file /home/miguel/Desktop/Skirt_transient/Full_code_1/gas_pressure_1/run_41/fort.41
Image PC Routine Line Source
run_41 000000000049E28A Unknown Unknown Unknown
run_41 000000000049CD86 Unknown Unknown Unknown
run_41 000000000044ED90 Unknown Unknown Unknown
run_41 000000000041ED3F Unknown Unknown Unknown
run_41 000000000041E247 Unknown Unknown Unknown
run_41 00000000004344C4 Unknown Unknown Unknown
run_41 0000000000414CE2 Unknown Unknown Unknown
run_41 0000000000407ED2 Unknown Unknown Unknown
run_41 00000000004048DC Unknown Unknown Unknown
libiomp5.so 00007F44628229F3 Unknown Unknown Unknown
Needless to say that I have no unit 41 in my code, this is all internally created by Fortran.
Anyone has any ideas?
I appreciate your help very much, THANKS!