send array using MPI

Hi,

I try to write a small fortran/mpi program to solve the
poisson eqn. To accomplish that, I have to send a part of
the calculated 2D array to the other processors.

The array is defined in a COMMON file: f(i,j) with i=100 and
j=100.

I want to send the values for j=10 and i=1 to 100; so I
actually send 100 values to the other processors.

My problem is, that I do not know, how I declare the range
of the sending array to the MPI_SEND routine.


CALL MPI_Send(f(1,100),count,MPI_FLOAT,1, 0,MPI_COMM_WORLD, ierr)

'count' should be set to 100, but how can I declare the
range!?

Would be nice, if you have an idea, how I can do that in
fortran77!

Greetings!
Fabian
.

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