Hello,
i'm using C++ with MPI and have a template function.
The two template candidates can be double or a structure called Complex which holds two double values.
Now i wanted to write a MPI_Send - call within this template function.
But i have problems with the datatype-argument within the signature.
Simply i cannot enter the T value for the datatype-argument so can it be that i need to build a derived datatype?
Or do i really need two implementation of this function - one for the double input and one for the complex input?
my function looks this:
struct Complex {double r; double i;};
void Class<T>::fct(Matrix<T> *m)
{
MPI_Send(buf, len, T, requestor, send_tag, world)
}
Sure this does not work because of the T type.
How could i implement the MPI_Send - function only once, both for a buffer holding double values
and for a buffer holding Complex values?
Are derived datatypes the solution? If so - a bit help would be very fine.
Thanks a lot
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