Synopsis
		sfwem2d_gpu vel=Fvel.rsf < Fxig.rsf swf=Fswf.rsf rwf=Frwf.rsf > Fxigo.rsf swfout=Fswfo.rsf rwfout=Frwfo.rsf sillum=Fsillum.rsf rillum=Frillum.rsf gpu=0 nxtap=40 verbose=n wantwf=n wantillum=n nh=0

Parameters
		int gpu=0 ID of the GPU to be used   int nh=0   int nxtap=40 TAPER size   file rillum= auxiliary output file name   file rwf= auxiliary input file name   file rwfout= auxiliary output file name   file sillum= auxiliary output file name   file swf= auxiliary input file name   file swfout= auxiliary output file name   file vel= auxiliary input file name   bool verbose=n [y/n] VERBOSITY flag   bool wantillum=n [y/n] Want output wavefields   bool wantwf=n [y/n] Want output wavefields