Debug a MPI code with Cmakefile in visual studio code

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I am trying to debug an open-source C code with MPI. This open-source has it own Cmakefile. I enable the mpi and debug model with the instructions of the open-source in the terminal. After the executable file named gmx_mpi is created, I import the project to visual studio code. I can run the executable file in terminal with below command

"mpirun -np 4 gmx_mpi mdrun -s diff.tpr -c diff.gro -ntomp 1"

So I made below configurations to debug the code with MPI in the visual studio code.

 {
        "name": "(gdb) Launch",
        "type": "cppdbg",
        "request": "launch",
        "program": "/usr/bin/mpirun",
        "args": ["-np","4","/home/fanli/workspace/gromacs_fh_debug/build/bin/gmx_mpi","mdrun","-s","diff.tpr","-deffnm","diff","-ntomp","1"],
        "stopAtEntry": false,
        "cwd": "/home/fanli/workspace/protein_water/double/40ms",
        "environment": [],
        "externalConsole": false,
        "MIMode": "gdb",
        "setupCommands": [
            {
                "description": "Enable pretty-printing for gdb",
                "text": "-enable-pretty-printing",
                "ignoreFailures": true
            }
        ]
    }

However, the code did not stop at the breakpoint I set, instead it run directly as if the it is in the release mode.

I googled a lot but did not find the solution.

Could anyone tell me how to debug the MPI code in visual studio code.

visual-studio-code mpi debugging
1 Answers

Currently, you cannot debug MPI code in vs code automatically and there is no extension to do so. See the issue below on GitHub for any change or update

GitHub

However, I found a workaround to duplicate the vs code window and attach the debugger manually:

YouTube

user_25435100
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