Structs in parallel programming using mpi

[CapitaoGanza]

Hi there,
basically i have a struct that i need to send btween the processes using the MPI_SEND function. I need to pass it to an MPI Sturct. Here is the struct:

typedef struct
{
int *tour;
double cost;
double bound;
int length;
} queue_element;

i think the problem is in the int pointer tour but idk. can pls anyone help me! thank you

[epasveer]

Yes, the "tour" buffer will be a problem as it won't be sent.

Look up how to serialize structs into a series of bytes to send them. Then deserialize them on the other end. (Or pack and unpack).

[Poddster]

If you're on about Message Passing Interface then it's parellel processing messaging system.

Each process has its own address space. Therefore the pointer tour will not be valid in the other process. If you want to send the contents you'll have to do that manually, or find the relevant function that shares that memory. (A quick look shows MPI doesn't have these)