MPI EXERCISE 3

Finite difference methods 2D Poisson Implementation via MPI with RMA routines

How to use

0. Load MPI module

$module load cports openmpi

1. Build the project

$ make clean && make

2. Run Q.1 script on Chuck(** RMA ** Routine)

$ mpirun -np [Number of processor] ./main2d_rmav1 [Number of Square Grids] $ example: mpirun -np 4 ./main2d_rmav1 13

3. Run Q.2 script on Chuck(** RMA PSCW ** Routine)

$ mpirun -np [Number of Processor] ./main2d_rmav2 [Number of Square Grids] $ example: mpirun -np 4 ./main2d_rmav2 13

4. Change the grid size in "Poisson1d.h"

5. Repeat step.1 to step.3

How to compare the results from RMA and Non-RMA

1. Run Q.3 script on Chuck

$ mpirun -np [Number of Processor] ./main2d [Number of Square Grids] $ example: mpirun -np 4 ./main2d 13

2. Change the grid size in "Poisson1d.h"

3. Repeat step.1 to step.1