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Clearify that errhandler is a handle

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It is safe to free the error handler after MPI_Comm_set_errhandler()
has been called
This commit is contained in:
Håkon Hægland
2024-12-08 14:23:51 +01:00
parent 46406a24d6
commit dfbafd9b23
1 changed files with 8 additions and 0 deletions
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8
opm/simulators/flow/ReservoirCoupling.cpp
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@@ -71,7 +71,15 @@ void setErrhandler(MPI_Comm comm, bool is_master)
else {
MPI_Comm_create_errhandler(custom_error_handler_slave_, &errhandler);
}
// NOTE: The errhandler is a handle (an integer) that is associated with the communicator
// that is why we pass this by value below. And it is safe to free the errhandler after it has
// been associated with the communicator.
MPI_Comm_set_errhandler(comm, errhandler);
// Mark the error handler for deletion. According to the documentation: "The error handler will
// be deallocated after all the objects associated with it (communicator, window, or file) have
// been deallocated." So the error handler will still be in effect until the communicator is
// deallocated.
MPI_Errhandler_free(&errhandler);
}
bool Seconds::compare_eq(double a, double b)