actully when i run my modified approach then my code is run only for 5 second after that i get an core dump segmentation fault error
It may be happened as a variable have a huge value (infinite) especially when there is an integrator in your simulation code
Consider inspecting the dumped core, depending on your OS and Binary you find it in different pathes, however.
You can use the GDB to debug your code step by step and to control your memory stack.
most common cause is that your code try to write out of its reserved memory.
Maybe you try to debug your code and find if your program write in some of your arrays with an index larger than its size.
Did you build ns-2 on your own? Or did they deploy only the binary?
In the former case, you can debug with the associated debugger of your compiler, e. g. gdb for gcc, llvm for clang, etc.
sounds like a timing issue where code is trying to access the same memory... does it happen exactly the same every time?
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