MFpre

Welcome to MFpre. This is a PreProcessor code developed to perform domain decomposition for the parallel meshfree Compressible flow solver. The code is developed using the routines available in the open-source graph partitioning tool METIS.

Running the program

1. Download METIS using spack or here
2. Export the path of the METIS directory to $METIS_DIR(add to bash file)
3. To run the code type make
4. The input grid file must be named point-input
5. The format for execution is given by, ./graphpart numberofpartitions(required) -inputformat(required) -ifcudaoutputrequired(optional)
6. For example, ./graphpart 8 -legacy generates 8 partitions for legacy input format
7. This will produce the partitioned files with names partGrid* which can be used as an input for either mpi or cuda based meshfree solver
8. To visualize the partitions type make plot
9. Download example point distributions, here

Execution options

input format	loads
--legacy	legacy format from structured grids
--quadtree	quadtree format
--restart	to partition restart files with primitive values

output format	generates
--cuda	default = no, generates cuda code datastructure for the particular input format you choose

Input formats

• Legacy format:

| point index | X | Y | left index | right index | flag_1 | flag_2 | neighbours | connectivity

• quadtree format:

| point index | X | Y | left index | right index | flag_1 | flag_2 | neighbours | connectivity

• Restart Format:

| point index | X | Y | left index | right index | pressure | x velocity | y velocity | pressure | flag_1 | flag_2 | neighbours | connectivity