I am calling my own function inside DEFINE_INIT() macro. When I am initialising it , FLUNET is getting hanged with error message reading:
MPI application rank 0 exited before MPI_FINALIZE() with status -1073741819.
I am aware of the fact that this is due to a mismatch of MPI_Send and MPI_Recv.
Actually I am using arrays inside that void function to get output in the parent DEFINE_INIT() macro.
But I dont know how to resolve this in FLUENT.
Does anyone have similar experience and can kindly show me the right way?
Thanks and best regards.
I don't know FLUNET, but the problem in MPI is that a process (the one with rank 0) is doing an exit (maybe exit() or pthread_exit() or any error like SIGSEGV) before calling MPI_Finalize() that must be called once by every process to close the MPI session.
So you should try to trace the MPI process of rank 0 with any debugger available on your system (for example gdb/ddd) and try to find why this process is exiting before the finalyze.
In MPI this kind of error may occur for many different reasons, but as you told that you have used send and recv functions, it may be due to a mismatch of size of data in the sending and receiving variables of the MPI_Send and MPI_Recv, or of some other arguments of these functions.
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