Program sfmpifwi | Time domain full waveform inversion using MPI parallel programming 
[SYNOPSIS]
sfmpifwi vinit=vinit.rsf shots=shots.rsf grads=grads.rsf illums=illums.rsf objs=objs.rsf verb=y precon=n niter=100 rbell=2
[COMMENTS]
Note: 	Clayton-Enquist absorbing boundary condition (A2) is applied!

[PARAMETERS]
file    | grads | = |   | 	auxiliary output file name
file    | illums | = |   | 	auxiliary output file name
int     | niter | =100 |   | 	number of iterations 
file    | objs | = |   | 	auxiliary output file name
bool    | precon | =n |  [y/n] | 	precondition or not 
int     | rbell | =2 |   | 	radius of bell smooth 
file    | shots | = |   | 	auxiliary input file name
bool    | verb | =y |  [y/n] | 	vebosity 
file    | vinit | = |   | 	auxiliary input file name
[DIRECTORY]
user/pyang
