Program sfmpipsp | Parallel Sweeping Preconditioner (PSP) for solving 3D Helmholtz equations.

[SYNOPSIS]
sfmpipsp velocity=in.rsf source=src.rsf solution=out.rsf n1=origNx n2=origNy n3=origNz freq= sigma=1.5  pmlSize=5 
[PARAMETERS]
        | freq | = |   | 	frequency in HZ
        | n1 | =origNx |   | 	
        | n2 | =origNy |   | 	
        | n3 | =origNz |   | 	
        | pmlSize | =5  |   | 	number of grid points of PML
        | sigma | =1.5  |   | 	magnitude of PML stretching
file    | solution | = |   | 	auxiliary output file name
file    | source | = |   | 	auxiliary input file name
file    | velocity | = |   | 	auxiliary input file name
[DIRECTORY]
user/poulsonj
