Sending Section of 3D array using MPI

Question

I have the following 3D array.

U[Timesteps][X][Y]

With Ranges

Timesteps ( 0 to 100)
X ( 0 to 480)
Y ( 0 to 480)

I need to split the array send across the nodes for processing using MPI.

I want to split like the following way

Process ( Node 0) Should get

U[Timesteps][X][Y]

With Ranges

Timesteps ( 0 to 100)
X ( 0 to 200)
Y ( 0 to 200)

and Process ( Node 1) Should get

U[Timesteps][X][Y]

With Ranges

Timesteps ( 0 to 100)
X ( 201 to 480)
Y ( 201 to 480)

Likewise I can split for as many nodes that becomes available at run time. ( i.e spliting on x and Y with full timesteps)

Can anyone help with sample MPI Code..I am getting confused in the derived data type use of MPI for my requirement.

Thanks

Something is missing here. What about `X(0 to 200) / Y(201 to 408)` and `X(201 to 408) / Y(0 to 200)`? — Hristo Iliev, Feb 27 '13 at 08:34

score 0 · Accepted Answer · answered Feb 27 '13 at 21:43

0

After some going through some MPI tutorials I got how to send 3D arrays. We need to use MPI_TYPE_INDEXED derived data type

answered Feb 27 '13 at 21:43

Anup Buchke

1 Answers1