[BSengupta]

Hi All,


I am new to SU2, but trying to learn it. I am encountering few problems. I am listing them.
1. I am trying to run caradonna_tung test case. When I am making NO to RESTART_SOL, the simulation runs well. But when I put YES it gives error, which is: "Error in "void CSolver::Read_SU2_Restart_Metadata(CGeometry*, CConfig*, bool, std::__cxx11::string)":
-------------------------------------------------------------------------
Unable to open restart file solution_flow.dat
------------------------------ Error Exit -------------------------------
"


2. I am trying to run this case in parallel (parallel_computation.py -f rot_caradonna_tung.cfg -n 4) with python script which gives errors as follows: "Traceback (most recent call last):
File "/usr/local/bin/parallel_computation.py", line 40, in <module>
sys.path.append(os.environ['SU2_RUN'])
File "/usr/lib/python2.7/UserDict.py", line 40, in __getitem__
raise KeyError(key)
KeyError: 'SU2_RUN'
"


3. As I am facing the problem with python script, I decided to do it manually step by step(mpirun -n 4 SU2_PRT rot_caradonna_tung.cfg, mpirun -n 4 SU2_CFD rot_caradonna_tung.cfg, mpirun -n 4 SU2_SOL rot_caradonna_tung.cfg). I am receiving error in that too: "mpirun was unable to find the specified executable file, and therefore
did not launch the job. This error was first reported for process
rank 0; it may have occurred for other processes as well.

NOTE: A common cause for this error is misspelling a mpirun command
line parameter option (remember that mpirun interprets the first
unrecognized command line token as the executable).

Node: bidesh
Executable: SU2_PRT
--------------------------------------------------------------------------
4 total processes failed to start"


I shall be really grateful to receive feedback so that I can understand the problem conceptually.
Thank you.

[akoodlyr]

Hi,


1. Can you check the cfg file for the option 'SOLUTION_FLOW_FILENAME'? It looks like it is currently set to 'solution_flow.dat'. When you run SU2, you should see the restart file named 'restart_flow.dat' written in your current directory by default. You can either rename that to solution_flow.dat or set the SOLUTION_FLOW_FILENAME to 'restart_flow.dat' and run SU2_CFD again.


2.Can you check if the environment variables SU2_RUN, SU2_CFD etc are defined properly i.e. do they point to the location where you have installed SU2?


3. I don't think you need to say SU2_PRT, you can just run with mpirun -n 4 SU2_CFD cfg file. I am copying this line from a presentation by Tom (which you can find at https://su2code.github.io/documents/...v_economon.pdf )

"SU2_CFD handles all grid input and solution data output in a fully parallel manner"


Cheers.

[BSengupta]

Thank you very much. It really solved my present problem.

[musa19]

Error in "void CSolver::Read_SU2_Restart_Metadata(CGeometry*, CConfig*, bool, std::__cxx11::string)":
-------------------------------------------------------------------------
Unable to open restart file solution_flow.dat
------------------------------ Error Exit -------------------------------

I am doing Unconstrained shape design of a transonic inviscid airfoil.

kindly help to solve this issue. I tried to rename SOLUTION_FLOW_FILENAME and RESTART_FLOW_FILENAME but error still shows same....

[akoodlyr]

Hi,

Have you tried to run with RESTART_SOL = NO. If so, could you check if you have any file called "solution_flow.dat" or "restart_flow.dat"in your folder? The restart files are written duing the run and you can use those files to restart from your simulation. If you have not run any simulation yet, there wouldn't be any restart files written.

Cheers,
Akshay