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Toa_gpu_3dvti_rtm_adcigs_1orderfunction.cu
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Toa_gpu_3dvti_rtm_adcigs_1orderfunction.cu
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//a#########################################################
//a## 3D Acoustic VTI Medium RTM
//a##
//a## Ps :GPU(CUDA) ,-SV ,3D laplace filter
//a##
//a##/*a***************************
//a##Function for VTI medium modeling,
//a##
//a## Ps: the function of modeling following:
//a##
//a## du/dt=1/rho*dp/dx ,
//a## dv/dt=1/rho*dp/dy ,
//a## dw/dt=1/rho*dq/dz ,
//a## dp/dt=rho*vpx^2*(du/dx+dv/dy)+rho*vp*vpn*dw/dz ,
//a## dq/dt=rho*vp*vpn*(du/dx+dv/dy)+rho*vp^2*dw/dz ,
//a## vpx^2=vp^2*(1+2*epsilu);
//a## vpn^2=vp^2*(1+2*deta);
//a##
//a##*********a*******************/
//a## Copyright (C) Rong Tao, all rights reserved
//a## code by Rong Tao
//a##
//a#########################################################
#include <stdio.h>
#include <malloc.h>
#include <math.h>
#include <stdlib.h>
#include <string.h>
#include <cuda_runtime.h>
#define pi 3.141592653
#define BlockSize1 16// tile size in 1st-axis
#define BlockSize2 16// tile size in 2nd-axis
#define mm 4
__device__ float d0;
__constant__ float c[mm]={1.196289,-0.0797526,0.009570313,-0.0006975447};
//a################################################################################
void check_gpu_error (const char *msg)
/*< check GPU errors >*/
{
cudaError_t err = cudaGetLastError ();
if (cudaSuccess != err) {
printf("Cuda error: %s: %s\n", msg, cudaGetErrorString (err));
exit(0);
}
}
//a################################################################################
__global__ void add_source(float pfac,int fsx,int fsy,int sz,int nx,int ny,int nz,int nnx,int nny,int nnz,float dt,float t,
float favg,int wtype,int npml,int is,int dsx,int dsy,float *P,float *Q,int nsx)
/*< generate ricker wavelet with time deley >*/
{
int ixs,iys,izs;
float x_,xx_,tdelay,ts,source=0.0,sx,sy;
tdelay=1.0/favg;
ts=t-tdelay;
// sx=fsx+is%nsx*dsx;
// sy=fsy+is/nsx*dsy;
sx=fsx+is*dsx;
sy=fsy+is*dsy;
if(wtype==1)//ricker wavelet
{
x_=favg*ts;
xx_=x_*x_;
source=(1-2*pi*pi*(xx_))*exp(-(pi*pi*xx_));
}else if(wtype==2){//derivative of gaussian
x_=(-4)*favg*favg*pi*pi/log(0.1);
source=(-2)*pi*pi*ts*exp(-x_*ts*ts);
}else if(wtype==3){//derivative of gaussian
x_=(-1)*favg*favg*pi*pi/log(0.1);
source=exp(-x_*ts*ts);
}
if(t<=2*tdelay)
{
ixs = sx+npml-1;
iys = sy+npml-1;
izs = sz+npml-1;
P[izs+ixs*nnz+iys*nnz*nnx]+=pfac*source;
Q[izs+ixs*nnz+iys*nnz*nnx]+=pfac*source;
}
}
/*******************func*********************/
__global__ void update_vel(int nx,int ny,int nz,int nnx,int nny,int nnz,int npml,float dt,float dx,float dy,float dz,
float *u0,float *v0,float *w0,float *u1,float *v1,float *w1,float *P,float *Q,
float *coffx1,float *coffx2,float *coffy1,float *coffy2,float *coffz1,float *coffz2)
{
const int iz = blockIdx.x * blockDim.x + threadIdx.x;//0--nz's thread:iz
const int ix = blockIdx.y * blockDim.y + threadIdx.y;//0--nx's thread:ix
int id,iy,im;
float dtx,dty,dtz,xx,yy,zz;
dtx=dt/dx;
dty=dt/dy;
dtz=dt/dz;
for(iy=0;iy<nny;iy++)
{
id=iz+ix*nnz+iy*nnz*nnx;
if(id>=mm&&id<nnx*nny*nnz-mm)
{
if(ix>=mm&&ix<(nnx-mm)&&iy>=mm&&iy<(nny-mm)&&iz>=mm&&iz<(nnz-mm))
{
xx=0.0;
yy=0.0;
zz=0.0;
for(im=0;im<mm;im++)
{
yy+=c[im]*(P[id+(im+1)*nnz*nnx] - P[id-im*nnz*nnx]);
xx+=c[im]*(P[id+(im+1)*nnz] - P[id-im*nnz]);
zz+=c[im]*(Q[id+im+1] - Q[id-im]);
}
u1[id]=coffx2[ix]*u0[id]-coffx1[ix]*dtx*xx;
v1[id]=coffy2[iy]*v0[id]-coffy1[iy]*dty*yy;
w1[id]=coffz2[iz]*w0[id]-coffz1[iz]*dtz*zz;
}
}
}
}
/*******************func***********************/
__global__ void update_stress(int nx,int ny,int nz,int nnx,int nny,int nnz,float dt,float dx,float dy,float dz,
float *u1,float *v1,float *w1,float *P,float *Q,float *vp,int npml,
float *px1,float *px0,float *py1,float *py0,float *pz1,float *pz0,
float *qx1,float *qx0,float *qy1,float *qy0,float *qz1,float *qz0,
float *acoffx1,float *acoffx2,float *acoffy1,float *acoffy2,float *acoffz1,float *acoffz2,
float *deta,float *epsilu,int fsx,int dsx,int fsy,int dsy,int zs,int is,int nsx,bool SV)
{
const int iz = blockIdx.x * blockDim.x + threadIdx.x;//0--nz's thread:iz
const int ix = blockIdx.y * blockDim.y + threadIdx.y;//0--nx's thread:ix
int id,iy,im,rx,ry,rz,R=15,r=4;
float dtx,dty,dtz,xx,yy,zz,ee,dd;
dtx=dt/dx;
dty=dt/dy;
dtz=dt/dz;
for(iy=0;iy<nny;iy++)
{
id=iz+ix*nnz+iy*nnz*nnx;
if(id>=mm&&id<nnx*nnz*nny-mm)
{
/************************i****************************************/
/************************iso circle start*************************/
// rx=ix-(fsx+is%nsx*dsx+npml-1);
// ry=iy-(fsy+is/nsx*dsy+npml-1);
rx=ix-(fsx+is*dsx+npml-1);
ry=iy-(fsy+is*dsy+npml-1);
rz=iz-(zs+npml-1);
if(SV){
if((rx*rx+ry*ry+rz*rz)<=R*R){
if((rx*rx+ry*ry+rz*rz)<=r*r){
ee = 0.0;
dd = 0.0;
}else{
ee = 0.5*(1-cos(pi*((sqrtf(rx*rx+ry*ry+rz*rz)-r)*4.0/(R*3.0-1))))*epsilu[id];
dd = 0.5*(1-cos(pi*((sqrtf(rx*rx+ry*ry+rz*rz)-r)*4.0/(R*3.0-1))))*deta[id];
}
}else{
ee=epsilu[id];
dd=deta[id];
}
}else{
ee=epsilu[id];
dd=deta[id];
}
/************************ iso circle end *************************/
/************************i****************************************/
if(ix>=mm&&ix<(nnx-mm)&&iy>=mm&&iy<(nny-mm)&&iz>=mm&&iz<(nnz-mm))
{
xx=0.0;
yy=0.0;
zz=0.0;
for(im=0;im<mm;im++)
{
yy+=c[im]*(v1[id+im*nnz*nnx] - v1[id-(im+1)*nnz*nnx]);
xx+=c[im]*(u1[id+im*nnz] - u1[id-(im+1)*nnz]);
zz+=c[im]*(w1[id+im] - w1[id-im-1]);
}
px1[id]=acoffx2[ix]*px0[id] - acoffx1[ix]*vp[id]*vp[id]*(1+2*ee)*dtx*xx;
py1[id]=acoffy2[iy]*py0[id] - acoffy1[iy]*vp[id]*vp[id]*(1+2*ee)*dty*yy;
pz1[id]=acoffz2[iz]*pz0[id] - acoffz1[iz]*vp[id]*vp[id]*sqrtf(1+2*dd)*dtz*zz;
qx1[id]=acoffx2[ix]*qx0[id] - acoffx1[ix]*vp[id]*vp[id]*sqrtf(1+2*dd)*dtx*xx;
qy1[id]=acoffy2[iy]*qy0[id] - acoffy1[iy]*vp[id]*vp[id]*sqrtf(1+2*dd)*dty*yy;
qz1[id]=acoffz2[iz]*qz0[id] - acoffz1[iz]*vp[id]*vp[id]*dtz*zz;
P[id]=px1[id]+py1[id]+pz1[id];
Q[id]=qx1[id]+qy1[id]+qz1[id];
}
}
}
}
/********************func**********************/
__global__ void get_d0(float dx,float dy,float dz,int nnx,int nny,int nnz,int npml,float *vp)
{
d0=10.0*vp[nny*nnx*nnz/2]*log(100000.0)/(2.0*npml*((dx+dy+dz)/3.0));
}
/*************func*******************/
void pad_vv(int nx,int ny,int nz,int nnx,int nny,int nnz,int npml,float *ee)
{
int ix,iy,iz,id;
for(iy=0;iy<nny;iy++)
for(ix=0;ix<nnx;ix++)
{
for(iz=0;iz<nnz;iz++)
{
id=iz+ix*nnz+iy*nnz*nnx;
if(ix<npml){
ee[id]=ee[iz+npml*nnz+iy*nnz*nnx]; //left
}else if(ix>=nnx-npml){
ee[id]=ee[iz+(nnx-npml-1)*nnz+iy*nnz*nnx];//right
}
}
}
for(iy=0;iy<nny;iy++)
for(ix=0;ix<nnx;ix++)
{
for(iz=0;iz<nnz;iz++)
{
id=iz+ix*nnz+iy*nnz*nnx;
if(iy<npml){
ee[id]=ee[iz+ix*nnz+npml*nnz*nnx]; //front
}else if(iy>=nny-npml){
ee[id]=ee[iz+ix*nnz+(nny-npml-1)*nnz*nnx];//back
}
}
}
for(iy=0;iy<nny;iy++)
for(ix=0;ix<nnx;ix++)
{
for(iz=0;iz<nnz;iz++)
{
id=iz+ix*nnz+iy*nnz*nnx;
if(iz<npml){
ee[id]=ee[npml+ix*nnz+iy*nnz*nnx]; //up
}else if(iz>=nnz-npml){
ee[id]=ee[nnz-npml-1+ix*nnz+iy*nnz*nnx];//down
}
}
}
}
/*************func*******************/
void read_file(char FN1[],char FN2[],char FN3[],int nx,int ny,int nz,int nnx,int nny,int nnz,float *vv,float *epsilu,float *deta,int npml)
{
int ix,iy,iz,id;
FILE *fp1,*fp2,*fp3;
if((fp1=fopen(FN1,"rb"))==NULL){printf("error open <%s>!\n",FN1);exit(0);}
if((fp2=fopen(FN2,"rb"))==NULL){printf("error open <%s>!\n",FN2);exit(0);}
if((fp3=fopen(FN3,"rb"))==NULL){printf("error open <%s>!\n",FN3);exit(0);}
for(iy=npml;iy<ny+npml;iy++)
for(ix=npml;ix<nx+npml;ix++)
{
for(iz=npml;iz<nz+npml;iz++)
{
id=iz+ix*nnz+iy*nnz*nnx;
fread(&vv[id],4L,1,fp1);
fread(&epsilu[id],4L,1,fp2);
fread(&deta[id],4L,1,fp3);
}
}
fclose(fp1);
fclose(fp2);
fclose(fp3);
}
/*************func*******************/
__global__ void initial_coffe(float dt,int nn,float *coff1,float *coff2,float *acoff1,float *acoff2,int npml)
{
int id=threadIdx.x+blockDim.x*blockIdx.x;
if(id<nn+2*npml)
{
if(id<npml)
{
coff1[id]=1.0/(1.0+(dt*d0*pow((npml-0.5-id)/npml,2.0))/2.0);
coff2[id]=coff1[id]*(1.0-(dt*d0*pow((npml-0.5-id)/npml,2.0))/2.0);
acoff1[id]=1.0/(1.0+(dt*d0*pow(((npml-id)*1.0)/npml,2.0))/2.0);
acoff2[id]=acoff1[id]*(1.0-(dt*d0*pow(((npml-id)*1.0)/npml,2.0))/2.0);
}else if(id>=npml&&id<npml+nn){
coff1[id]=1.0;
coff2[id]=1.0;
acoff1[id]=1.0;
acoff2[id]=1.0;
}else{
coff1[id]=1.0/(1.0+(dt*d0*pow((0.5+id-nn-npml)/npml,2.0))/2.0);
coff2[id]=coff1[id]*(1.0-(dt*d0*pow((0.5+id-nn-npml)/npml,2.0))/2.0);
acoff1[id]=1.0/(1.0+(dt*d0*pow(((id-nn-npml)*1.0)/npml,2.0))/2.0);
acoff2[id]=acoff1[id]*(1.0-(dt*d0*pow(((id-nn-npml)*1.0)/npml,2.0))/2.0);
}
}
}
/*************func*******************/
__global__ void shot_record(int nnx,int nny, int nnz, int nx,int ny, int nz, int npml, int it, int nt,
float *P, float *Q, float *shot, bool flag)
{
int id=threadIdx.x+blockDim.x*blockIdx.x;
int ix=id%nx;
int iy=id/nx;
if(id<nx*ny)
{
if(flag)
{
shot[it+nt*ix+nt*nx*iy]=P[npml+nnz*(ix+npml)+nnz*nnx*(iy+npml)]
+Q[npml+nnz*(ix+npml)+nnz*nnx*(iy+npml)];
}else{
P[npml-1+nnz*(ix+npml)+nnz*nnx*(iy+npml)]=shot[it+nt*ix+nt*nx*iy];
Q[npml-1+nnz*(ix+npml)+nnz*nnx*(iy+npml)]=shot[it+nt*ix+nt*nx*iy];
}
}
}
/*************func**************/
void window3d(float *a, float *b, int nz, int nx, int ny, int nnz, int nnx, int npml)
/*< window a 3d subvolume >*/
{
int iz, ix, iy;
for(iy=0; iy<ny; iy++)
for(ix=0; ix<nx; ix++)
for(iz=0; iz<nz; iz++)
{
a[iz+nz*ix+nz*nx*iy]=b[(iz+npml)+nnz*(ix+npml)+nnz*nnx*(iy+npml)];
}
}
/*************func**************/
__global__ void mute_directwave(int nx,int ny,int nt,float dt,float favg, float dx,float dy,float dz,int fsx,int fsy,int dsx,int dsy,
int zs,int is, float *vp,float *epsilu,float *shot,int tt,int nsx)
{
const int ix = blockIdx.x * blockDim.x + threadIdx.x;
const int iy = blockIdx.y * blockDim.y + threadIdx.y;
int id,it;
int mu_t,mu_nt;
float mu_x,mu_y,mu_z,mu_t0;
for(it=0;it<nt;it++)
{
id=it+ix*nt+iy*nx*nt;
if(ix<nx&&iy<ny&&it<nt)
{
// mu_x=dx*abs(ix-fsx-(is%nsx)*dsx);
// mu_y=dy*abs(iy-fsy-(is/nsx)*dsy);
mu_x=dx*abs(ix-fsx-is*dsx);
mu_y=dy*abs(iy-fsy-is*dsy);
mu_z=dz*zs;
mu_t0=sqrtf(pow(mu_x,2)+pow(mu_y,2)+pow(mu_z,2))/(vp[1]*sqrtf(1+2*epsilu[1]));
mu_t=(int)(2.0/(dt*favg));
mu_nt=(int)(mu_t0/dt)+mu_t+tt;
if((it>(int)(mu_t0/dt)-tt)&&(it<mu_nt))
shot[id]=0.0;
}
}
/* int id=threadIdx.x+blockDim.x*blockIdx.x;
int mu_t,mu_nt;
float mu_x,mu_y,mu_z,mu_t0;
int ix=(id/nt)%nx;
int iy=(id/nt)/nx;
int it=id%nt;
if(id<nx*ny*nt)
{
mu_x=dx*abs(ix-fsx-(is%nsx)*dsx);
mu_y=dy*abs(iy-fsy-(is/nsx)*dsy);
mu_z=dz*zs;
mu_t0=sqrtf(pow(mu_x,2)+pow(mu_y,2)+pow(mu_z,2))/(vp[1]*sqrtf(1+2*epsilu[1]));
mu_t=(int)(2.0/(dt*favg));
mu_nt=(int)(mu_t0/dt)+mu_t+tt;
if(it<mu_nt)
shot[id]=0.0;
} */
}
/*************func*******************/
__global__ void wavefield_bndr(int nnx, int nny, int nnz, int nx, int ny, int nz, int npml, int it, int nt,
float *P, float *Q, float *P_bndr, float *Q_bndr, bool flag)
{
int id=threadIdx.x+blockDim.x*blockIdx.x;
int ix,iy,iz;
if(id<2*nx*ny+2*nz*ny+2*nx*nz)
{
if(flag)/////////////////////////////////save boundary
{
if(id<nx*ny){//up
ix=id%nx;
iy=id/nx;
P_bndr[it*(2*nx*ny+2*nz*ny+2*nx*nz)+id]=P[npml-1+nnz*(ix+npml)+nnz*nnx*(iy+npml)];
Q_bndr[it*(2*nx*ny+2*nz*ny+2*nx*nz)+id]=Q[npml-1+nnz*(ix+npml)+nnz*nnx*(iy+npml)];
}else if(id>=nx*ny&&id<(2*nx*ny)){//down
ix=(id-nx*ny)%nx;
iy=(id-nx*ny)/nx;
P_bndr[it*(2*nx*ny+2*nz*ny+2*nx*nz)+id]=P[npml+nz+nnz*(ix+npml)+nnz*nnx*(iy+npml)];
Q_bndr[it*(2*nx*ny+2*nz*ny+2*nx*nz)+id]=Q[npml+nz+nnz*(ix+npml)+nnz*nnx*(iy+npml)];
}else if(id>=(2*nx*ny)&&id<(2*nx*ny+nz*ny)){//left
iz=(id-2*nx*ny)%nz;
iy=(id-2*nx*ny)/nz;
P_bndr[it*(2*nx*ny+2*nz*ny+2*nx*nz)+id]=P[npml+iz+nnz*(npml-1)+nnz*nnx*(iy+npml)];
Q_bndr[it*(2*nx*ny+2*nz*ny+2*nx*nz)+id]=Q[npml+iz+nnz*(npml-1)+nnz*nnx*(iy+npml)];
}else if(id>=(2*nx*ny+nz*ny)&&id<(2*nx*ny+2*nz*ny)){//right
iz=(id-2*nx*ny-nz*ny)%nz;
iy=(id-2*nx*ny-nz*ny)/nz;
P_bndr[it*(2*nx*ny+2*nz*ny+2*nx*nz)+id]=P[npml+iz+nnz*(nx+npml)+nnz*nnx*(iy+npml)];
Q_bndr[it*(2*nx*ny+2*nz*ny+2*nx*nz)+id]=Q[npml+iz+nnz*(nx+npml)+nnz*nnx*(iy+npml)];
}else if(id>=(2*nx*ny+2*nz*ny)&&id<(2*nx*ny+2*nz*ny+nx*nz)){//front
iz=(id-2*nx*ny-2*nz*ny)%nz;
ix=(id-2*nx*ny-2*nz*ny)/nz;
P_bndr[it*(2*nx*ny+2*nz*ny+2*nx*nz)+id]=P[npml+iz+nnz*(ix+npml)+nnz*nnx*(npml-1)];
Q_bndr[it*(2*nx*ny+2*nz*ny+2*nx*nz)+id]=Q[npml+iz+nnz*(ix+npml)+nnz*nnx*(npml-1)];
}else if(id>=(2*nx*ny+2*nz*ny+nx*nz)&&id<(2*nx*ny+2*nz*ny+2*nx*nz)){//back
iz=(id-2*nx*ny-2*nz*ny-nx*nz)%nz;
ix=(id-2*nx*ny-2*nz*ny-nx*nz)/nz;
P_bndr[it*(2*nx*ny+2*nz*ny+2*nx*nz)+id]=P[npml+iz+nnz*(ix+npml)+nnz*nnx*(npml+ny)];
Q_bndr[it*(2*nx*ny+2*nz*ny+2*nx*nz)+id]=Q[npml+iz+nnz*(ix+npml)+nnz*nnx*(npml+ny)];
}
}else{
if(id<nx*ny){//up
ix=id%nx;
iy=id/nx;
P[npml-1+nnz*(ix+npml)+nnz*nnx*(iy+npml)]=P_bndr[it*(2*nx*ny+2*nz*ny+2*nx*nz)+id];
Q[npml-1+nnz*(ix+npml)+nnz*nnx*(iy+npml)]=Q_bndr[it*(2*nx*ny+2*nz*ny+2*nx*nz)+id];
}else if(id>=nx*ny&&id<(2*nx*ny)){//down
ix=(id-nx*ny)%nx;
iy=(id-nx*ny)/nx;
P[npml+nz+nnz*(ix+npml)+nnz*nnx*(iy+npml)]=P_bndr[it*(2*nx*ny+2*nz*ny+2*nx*nz)+id];
Q[npml+nz+nnz*(ix+npml)+nnz*nnx*(iy+npml)]=Q_bndr[it*(2*nx*ny+2*nz*ny+2*nx*nz)+id];
}else if(id>=(2*nx*ny)&&id<(2*nx*ny+nz*ny)){//left
iz=(id-2*nx*ny)%nz;
iy=(id-2*nx*ny)/nz;
P[npml+iz+nnz*(npml-1)+nnz*nnx*(iy+npml)]=P_bndr[it*(2*nx*ny+2*nz*ny+2*nx*nz)+id];
Q[npml+iz+nnz*(npml-1)+nnz*nnx*(iy+npml)]=Q_bndr[it*(2*nx*ny+2*nz*ny+2*nx*nz)+id];
}else if(id>=(2*nx*ny+nz*ny)&&id<(2*nx*ny+2*nz*ny)){//right
iz=(id-2*nx*ny-nz*ny)%nz;
iy=(id-2*nx*ny-nz*ny)/nz;
P[npml+iz+nnz*(nx+npml)+nnz*nnx*(iy+npml)]=P_bndr[it*(2*nx*ny+2*nz*ny+2*nx*nz)+id];
Q[npml+iz+nnz*(nx+npml)+nnz*nnx*(iy+npml)]=Q_bndr[it*(2*nx*ny+2*nz*ny+2*nx*nz)+id];
}else if(id>=(2*nx*ny+2*nz*ny)&&id<(2*nx*ny+2*nz*ny+nx*nz)){//front
iz=(id-2*nx*ny-2*nz*ny)%nz;
ix=(id-2*nx*ny-2*nz*ny)/nz;
P[npml+iz+nnz*(ix+npml)+nnz*nnx*(npml-1)]=P_bndr[it*(2*nx*ny+2*nz*ny+2*nx*nz)+id];
Q[npml+iz+nnz*(ix+npml)+nnz*nnx*(npml-1)]=Q_bndr[it*(2*nx*ny+2*nz*ny+2*nx*nz)+id];
}else if(id>=(2*nx*ny+2*nz*ny+nx*nz)&&id<(2*nx*ny+2*nz*ny+2*nx*nz)){//back
iz=(id-2*nx*ny-2*nz*ny-nx*nz)%nz;
ix=(id-2*nx*ny-2*nz*ny-nx*nz)/nz;
P[npml+iz+nnz*(ix+npml)+nnz*nnx*(npml+ny)]=P_bndr[it*(2*nx*ny+2*nz*ny+2*nx*nz)+id];
Q[npml+iz+nnz*(ix+npml)+nnz*nnx*(npml+ny)]=Q_bndr[it*(2*nx*ny+2*nz*ny+2*nx*nz)+id];
}
}
}
}
/*************func**************/
__global__ void cal_migration(int nnx, int nny, int nnz,int nx, int ny, int nz, int npml, float *migration, float *s, float *g)
{
const int iz = blockIdx.x * blockDim.x + threadIdx.x;//0--nz's thread:iz
const int ix = blockIdx.y * blockDim.y + threadIdx.y;//0--nx's thread:ix
int id,iy;
for(iy=0;iy<ny;iy++)
{
id=iz+ix*nz+iy*nz*nx;
if(ix<nx&&iy<ny&&iz<nz)
migration[id]+=s[iz+npml+nnz*(ix+npml)+nnx*nnz*(iy+npml)]*g[iz+npml+nnz*(ix+npml)+nnx*nnz*(iy+npml)];
}
}
/*************func**************/
__global__ void cal_illumination(int nnx, int nny, int nnz,int nx, int ny, int nz, int npml, float *illumination, float *P, float *Q)
{
const int iz = blockIdx.x * blockDim.x + threadIdx.x;//0--nz's thread:iz
const int ix = blockIdx.y * blockDim.y + threadIdx.y;//0--nx's thread:ix
int id,iy;
for(iy=0;iy<ny;iy++)
{
id=iz+ix*nz+iy*nz*nx;
if(ix<nx&&iy<ny&&iz<nz)
illumination[id]+=P[iz+npml+nnz*(ix+npml)+nnx*nnz*(iy+npml)]*P[iz+npml+nnz*(ix+npml)+nnx*nnz*(iy+npml)]
+Q[iz+npml+nnz*(ix+npml)+nnx*nnz*(iy+npml)]*Q[iz+npml+nnz*(ix+npml)+nnx*nnz*(iy+npml)];
}
}
/*************func**************/
__global__ void migration_illum(int nnx, int nny, int nnz,int nx, int ny, int nz, int npml, float *illumination, float *migration)
{
const int iz = blockIdx.x * blockDim.x + threadIdx.x;//0--nz's thread:iz
const int ix = blockIdx.y * blockDim.y + threadIdx.y;//0--nx's thread:ix
int id,iy;
for(iy=0;iy<ny;iy++)
{
id=iz+ix*nz+iy*nz*nx;
if(ix<nx&&iy<ny&&iz<nz)
if(illumination[id]!=0)
migration[id]/=illumination[id];
}
}
/*************func**************/
void laplace_3d_filter(int adj, int nz, int nx,int ny, float *in, float *out)
/*< linear operator, come from Madagascar Mlaplac2>*/
{
int iz,ix,iy,j;
for (j=0;j<nx*nz*ny;j++) out[j]=0.0;
for(iy=0;iy<ny;iy++)
for (ix=0; ix < nx; ix++) {
for (iz=0; iz < nz; iz++) {
j = iz+ix*nz+iy*nx*nz;
if (iz > 0) {
if (adj) {
out[j-1] -= in[j];
out[j] += in[j];
} else {
out[j] += in[j] - in[j-1];
}
}
if (iz < nz-1) {
if (adj) {
out[j+1] -= in[j];
out[j] += in[j];
} else {
out[j] += in[j] - in[j+1];
}
}
if (ix > 0) {
if (adj) {
out[j-nz] -= in[j];
out[j] += in[j];
} else {
out[j] += in[j] - in[j-nz];
}
}
if (ix < nx-1) {
if (adj) {
out[j+nz] -= in[j];
out[j] += in[j];
} else {
out[j] += in[j] - in[j+nz];
}
}
if (iy > 0) {
if (adj) {
out[j-nz*nx] -= in[j];
out[j] += in[j];
} else {
out[j] += in[j] - in[j-nz*nx];
}
}
if (iy < ny-1) {
if (adj) {
out[j+nz*nx] -= in[j];
out[j] += in[j];
} else {
out[j] += in[j] - in[j+nz*nx];
}
}
}
}
}
/*************func**************/
__global__ void Poynting_Adcigs(int nnx, int nny, int nnz, int nx, int ny, int nz, int npml, int na, int da,float *adcigs,int dcdp,
float *s_P, float *s_Q, float *s_u, float *s_v, float *s_w,
float *g_P, float *g_Q, float *g_u, float *g_v, float *g_w)
{
const int iz = blockIdx.x * blockDim.x + threadIdx.x;//0--nz's thread:iz
const int ix = blockIdx.y * blockDim.y + threadIdx.y;//0--nx's thread:ix
int id,iy,ia;
float Ssx, Ssy, Ssz, Sgx, Sgy, Sgz, b1, b2, a;
for(iy=0;iy<(int)(ny/dcdp);iy++)
{
if(ix<(int)(nx/dcdp)&&iz<nz)
{
ia=0;
Ssx=-s_P[iz+npml+nnz*(ix*dcdp+npml)+nnz*nnx*(iy*dcdp+npml)]*s_u[iz+npml+nnz*(ix*dcdp+npml)+nnz*nnx*(iy*dcdp+npml)];
Ssy=-s_P[iz+npml+nnz*(ix*dcdp+npml)+nnz*nnx*(iy*dcdp+npml)]*s_v[iz+npml+nnz*(ix*dcdp+npml)+nnz*nnx*(iy*dcdp+npml)];
Ssz=-s_Q[iz+npml+nnz*(ix*dcdp+npml)+nnz*nnx*(iy*dcdp+npml)]*s_w[iz+npml+nnz*(ix*dcdp+npml)+nnz*nnx*(iy*dcdp+npml)];
Sgx= g_P[iz+npml+nnz*(ix*dcdp+npml)+nnz*nnx*(iy*dcdp+npml)]*g_u[iz+npml+nnz*(ix*dcdp+npml)+nnz*nnx*(iy*dcdp+npml)];
Sgy= g_P[iz+npml+nnz*(ix*dcdp+npml)+nnz*nnx*(iy*dcdp+npml)]*g_v[iz+npml+nnz*(ix*dcdp+npml)+nnz*nnx*(iy*dcdp+npml)];
Sgz= g_Q[iz+npml+nnz*(ix*dcdp+npml)+nnz*nnx*(iy*dcdp+npml)]*g_w[iz+npml+nnz*(ix*dcdp+npml)+nnz*nnx*(iy*dcdp+npml)];
b1= Ssx*Ssx + Ssy*Ssy + Ssz*Ssz;
b2= Sgx*Sgx + Sgy*Sgy + Sgz*Sgz;
a=(Ssx*Sgx + Ssy*Sgy + Ssz*Sgz)/(sqrtf(b1*b2)*(1 - 0.1));
if(a>=-1&&a<=1)
{
a=0.5*acosf(a)*180.0/pi;
ia=(int)(a/(da*1.0));
if(ia<na)
{
id=iz+ia*nz+ix*na*nz+iy*nz*na*((int)(nx/dcdp));
adcigs[id] += s_P[iz+npml+nnz*(ix*dcdp+npml)+nnz*nnx*(iy*dcdp+npml)]
*g_P[iz+npml+nnz*(ix*dcdp+npml)+nnz*nnx*(iy*dcdp+npml)]
*cosf(ia*pi/180.0)*cosf(ia*pi/180.0)*cosf(ia*pi/180.0);
}
}
}
}
}
/*************func**************/
__global__ void adcigs_illum(int nnx, int nny, int nnz, int nx, int ny, int nz, int npml, int na, float *adcigs,int dcdp, float *illum)
{
const int iz = blockIdx.x * blockDim.x + threadIdx.x;//0--nz's thread:iz
const int ix = blockIdx.y * blockDim.y + threadIdx.y;//0--nx's thread:ix
int id,iy,ia;
for(iy=0;iy<(int)(ny/dcdp);iy++)
{
for(ia=0;ia<na;ia++)
{
if(ix<(int)(nx/dcdp)&&iz<nz)
{
id=iz+ia*nz+ix*na*nz+iy*nz*na*((int)(nx/dcdp));
if(illum[iz+ix*dcdp*nz+iy*dcdp*nx*nz]!=0)
adcigs[id] /=illum[iz+ix*dcdp*nz+iy*dcdp*nx*nz];
}
}
}
}
//a########################################################################
int main(int argc,char *argv[])
{
int is, it, nx, ny, nz, nnx, nny, nnz, nt, wtype, na, da, dcdp, nxa, nya;
int ns, nsx, dsx, fsx, dsy, fsy, zs, npml;
float dx, dy, dz, dt, t, pfac, favg;
float *v, *e, *d;
float *vp, *epsilu, *deta;
float *s_u0, *s_u1, *s_px0, *s_qx0, *s_px1, *s_qx1;
float *s_v0, *s_v1, *s_py0, *s_qy0, *s_py1, *s_qy1;
float *s_w0, *s_w1, *s_pz0, *s_qz0, *s_pz1, *s_qz1;
float *s_P, *s_Q;
float *g_u0, *g_u1, *g_px0, *g_qx0, *g_px1, *g_qx1;
float *g_v0, *g_v1, *g_py0, *g_qy0, *g_py1, *g_qy1;
float *g_w0, *g_w1, *g_pz0, *g_qz0, *g_pz1, *g_qz1;
float *g_P, *g_Q;
float *s_P_bndr, *s_Q_bndr;
float *shot_Dev, *shot_Hos;
float *migration, *illumination, *adcigs;
float *Atemp;
float *coffx1,*coffx2,*coffy1,*coffy2,*coffz1,*coffz2;
float *acoffx1,*acoffx2,*acoffy1,*acoffy2,*acoffz1,*acoffz2;
clock_t start, end, is_t0, is_t1;
/*************wavelet\boundary**************/
wtype=1;npml=20;
/********** dat document ***********/
char FN1[250]={"waxian_vel_201201201.dat"};
char FN2[250]={"waxian_eps_201201201.dat"};
char FN3[250]={"waxian_del_201201201.dat"};
char FN4[250]={"waxian_shot.dat"};
char FN5[250]={"waxian_snap.dat"};
char FN6[250]={"waxian_migration.dat"};
char FN7[250]={"waxian_migration_laplace.dat"};
char FN8[250]={"waxian_illumination.dat"};
char FN9[250]={"waxian_adcigs.dat"};
/********aaa************/
FILE *fpsnap, *fpshot, *fpmig,*fpmigla, *fpillum, *fpadcigs;
fpshot=fopen(FN4,"wb");
fpsnap=fopen(FN5,"wb");
fpmig=fopen(FN6,"wb");
fpmigla=fopen(FN7,"wb");
fpillum=fopen(FN8,"wb");
fpadcigs=fopen(FN9,"wb");
/********* parameters *************/
nx=201;
ny=201;
nz=201; favg=60; pfac=10.0;
dx=5.0;
dy=5.0;
dz=5.0;
nt=1501;
dt=0.0005;
ns=625; nsx=25;
// fsx=nx/nsx/2; dsx=nx/nsx;
// fsy=ny/(ns/nsx)/2; dsy=ny/(ns/nsx);
fsx=4;//nx/ns/2;
dsx=8;//nx/ns;
fsy=4;//ny/ns/2;//200;//100;//ny/ns/2;
dsy=8;//ny/ns;//0;//ny/ns;
zs=1;
na=65;
da=1;
dcdp=1;
/*************v***************/
nnx=nx+2*npml;
nny=ny+2*npml;
nnz=nz+2*npml;
nxa=(int)(nx/dcdp);
nya=(int)(ny/dcdp);
/************a*************/
Atemp=(float*)malloc(nz*nxa*nya*na*sizeof(float));
v=(float*)malloc(nnz*nnx*nny*sizeof(float));
e=(float*)malloc(nnz*nnx*nny*sizeof(float));
d=(float*)malloc(nnz*nnx*nny*sizeof(float));
shot_Hos=(float*)malloc(nt*nx*ny*sizeof(float));
read_file(FN1,FN2,FN3,nx,ny,nz,nnx,nny,nnz,v,e,d,npml);
/****************************/
pad_vv(nx,ny,nz,nnx,nny,nnz,npml,e);
pad_vv(nx,ny,nz,nnx,nny,nnz,npml,d);
pad_vv(nx,ny,nz,nnx,nny,nnz,npml,v);
cudaSetDevice(0);// initialize device, default device=0;
check_gpu_error("Failed to initialize device!");
dim3 dimg, Xdimg, Adimg, dimb;
dimg.x=(nnz+BlockSize1-1)/BlockSize1;
dimg.y=(nnx+BlockSize2-1)/BlockSize2;
Xdimg.x=(nnx+BlockSize1-1)/BlockSize1;
Xdimg.y=(nny+BlockSize2-1)/BlockSize2;
Adimg.x=(nz+BlockSize1-1)/BlockSize1;
Adimg.y=(nxa+BlockSize2-1)/BlockSize2;
dimb.x=BlockSize1;
dimb.y=BlockSize2;
/****************************/
cudaMalloc(&vp, nnz*nnx*nny*sizeof(float));
cudaMalloc(&epsilu, nnz*nnx*nny*sizeof(float));
cudaMalloc(&deta, nnz*nnx*nny*sizeof(float));
cudaMemcpy(vp, v, nnz*nnx*nny*sizeof(float), cudaMemcpyHostToDevice);
cudaMemcpy(epsilu, e, nnz*nnx*nny*sizeof(float), cudaMemcpyHostToDevice);
cudaMemcpy(deta, d, nnz*nnx*nny*sizeof(float), cudaMemcpyHostToDevice);
/****************************/
cudaMalloc(&s_u0, nnz*nnx*nny*sizeof(float)); cudaMalloc(&s_u1, nnz*nnx*nny*sizeof(float));
cudaMalloc(&s_v0, nnz*nnx*nny*sizeof(float)); cudaMalloc(&s_v1, nnz*nnx*nny*sizeof(float));
cudaMalloc(&s_w0, nnz*nnx*nny*sizeof(float)); cudaMalloc(&s_w1, nnz*nnx*nny*sizeof(float));
cudaMalloc(&s_P, nnz*nnx*nny*sizeof(float)); cudaMalloc(&s_Q, nnz*nnx*nny*sizeof(float));
cudaMalloc(&s_px0, nnz*nnx*nny*sizeof(float)); cudaMalloc(&s_px1, nnz*nnx*nny*sizeof(float));
cudaMalloc(&s_py0, nnz*nnx*nny*sizeof(float)); cudaMalloc(&s_py1, nnz*nnx*nny*sizeof(float));
cudaMalloc(&s_pz0, nnz*nnx*nny*sizeof(float)); cudaMalloc(&s_pz1, nnz*nnx*nny*sizeof(float));
cudaMalloc(&s_qx0, nnz*nnx*nny*sizeof(float)); cudaMalloc(&s_qx1, nnz*nnx*nny*sizeof(float));
cudaMalloc(&s_qy0, nnz*nnx*nny*sizeof(float)); cudaMalloc(&s_qy1, nnz*nnx*nny*sizeof(float));
cudaMalloc(&s_qz0, nnz*nnx*nny*sizeof(float)); cudaMalloc(&s_qz1, nnz*nnx*nny*sizeof(float));
cudaMalloc(&g_u0, nnz*nnx*nny*sizeof(float)); cudaMalloc(&g_u1, nnz*nnx*nny*sizeof(float));
cudaMalloc(&g_v0, nnz*nnx*nny*sizeof(float)); cudaMalloc(&g_v1, nnz*nnx*nny*sizeof(float));
cudaMalloc(&g_w0, nnz*nnx*nny*sizeof(float)); cudaMalloc(&g_w1, nnz*nnx*nny*sizeof(float));
cudaMalloc(&g_P, nnz*nnx*nny*sizeof(float)); cudaMalloc(&g_Q, nnz*nnx*nny*sizeof(float));
cudaMalloc(&g_px0, nnz*nnx*nny*sizeof(float)); cudaMalloc(&g_px1, nnz*nnx*nny*sizeof(float));
cudaMalloc(&g_py0, nnz*nnx*nny*sizeof(float)); cudaMalloc(&g_py1, nnz*nnx*nny*sizeof(float));
cudaMalloc(&g_pz0, nnz*nnx*nny*sizeof(float)); cudaMalloc(&g_pz1, nnz*nnx*nny*sizeof(float));
cudaMalloc(&g_qx0, nnz*nnx*nny*sizeof(float)); cudaMalloc(&g_qx1, nnz*nnx*nny*sizeof(float));
cudaMalloc(&g_qy0, nnz*nnx*nny*sizeof(float)); cudaMalloc(&g_qy1, nnz*nnx*nny*sizeof(float));
cudaMalloc(&g_qz0, nnz*nnx*nny*sizeof(float)); cudaMalloc(&g_qz1, nnz*nnx*nny*sizeof(float));
cudaMalloc(&coffx1, nnx*sizeof(float)); cudaMalloc(&coffx2, nnx*sizeof(float));
cudaMalloc(&coffy1, nnx*sizeof(float)); cudaMalloc(&coffy2, nnx*sizeof(float));
cudaMalloc(&coffz1, nnz*sizeof(float)); cudaMalloc(&coffz2, nnz*sizeof(float));
cudaMalloc(&acoffx1, nnx*sizeof(float)); cudaMalloc(&acoffx2, nnx*sizeof(float));
cudaMalloc(&acoffy1, nnx*sizeof(float)); cudaMalloc(&acoffy2, nnx*sizeof(float));
cudaMalloc(&acoffz1, nnz*sizeof(float)); cudaMalloc(&acoffz2, nnz*sizeof(float));
cudaMalloc(&s_P_bndr, nt*(2*nx*ny+2*nz*ny+2*nx*nz)*sizeof(float));
cudaMalloc(&s_Q_bndr, nt*(2*nx*ny+2*nz*ny+2*nx*nz)*sizeof(float));
cudaMalloc(&migration, nz*nx*ny*sizeof(float));
cudaMalloc(&illumination, nz*nx*ny*sizeof(float));
cudaMalloc(&adcigs, nz*nxa*nya*na*sizeof(float));
cudaMalloc(&shot_Dev, nx*ny*nt*sizeof(float));
/******************************/
check_gpu_error("Failed to allocate memory for variables!");
get_d0<<<1, 1>>>(dx,dy,dz,nnx,nny,nnz,npml,vp);
initial_coffe<<<(nnx+511)/512, 512>>>(dt,nx,coffx1,coffx2,acoffx1,acoffx2,npml);
initial_coffe<<<(nny+511)/512, 512>>>(dt,ny,coffy1,coffy2,acoffy1,acoffy2,npml);
initial_coffe<<<(nnz+511)/512, 512>>>(dt,nz,coffz1,coffz2,acoffz1,acoffz2,npml);
cudaMemset(migration, 0, nz*nx*ny*sizeof(float));
cudaMemset(illumination, 0, nz*nx*ny*sizeof(float));
cudaMemset(adcigs, 0, nz*na*nxa*nya*sizeof(float));
printf("--------------------------------------------------------\n");
printf("--- \n");
start = clock();
/**********IS Loop start*******/
for(is=0;is<ns;is++)
{
// printf("--- IS=%3d \n",is);
is_t0 = clock();
cudaMemset(s_u0, 0, nnz*nnx*nny*sizeof(float)); cudaMemset(s_u1, 0, nnz*nnx*nny*sizeof(float));
cudaMemset(s_v0, 0, nnz*nnx*nny*sizeof(float)); cudaMemset(s_v1, 0, nnz*nnx*nny*sizeof(float));
cudaMemset(s_w0, 0, nnz*nnx*nny*sizeof(float)); cudaMemset(s_w1, 0, nnz*nnx*nny*sizeof(float));
cudaMemset(s_P, 0, nnz*nnx*nny*sizeof(float)); cudaMemset(s_Q, 0, nnz*nnx*nny*sizeof(float));
cudaMemset(s_px0, 0, nnz*nnx*nny*sizeof(float)); cudaMemset(s_px1, 0, nnz*nnx*nny*sizeof(float));
cudaMemset(s_py0, 0, nnz*nnx*nny*sizeof(float)); cudaMemset(s_py1, 0, nnz*nnx*nny*sizeof(float));
cudaMemset(s_pz0, 0, nnz*nnx*nny*sizeof(float)); cudaMemset(s_pz1, 0, nnz*nnx*nny*sizeof(float));
cudaMemset(s_qx0, 0, nnz*nnx*nny*sizeof(float)); cudaMemset(s_qx1, 0, nnz*nnx*nny*sizeof(float));
cudaMemset(s_qy0, 0, nnz*nnx*nny*sizeof(float)); cudaMemset(s_qy1, 0, nnz*nnx*nny*sizeof(float));
cudaMemset(s_qz0, 0, nnz*nnx*nny*sizeof(float)); cudaMemset(s_qz1, 0, nnz*nnx*nny*sizeof(float));
cudaMemset(g_u0, 0, nnz*nnx*nny*sizeof(float)); cudaMemset(g_u1, 0, nnz*nnx*nny*sizeof(float));
cudaMemset(g_v0, 0, nnz*nnx*nny*sizeof(float)); cudaMemset(g_v1, 0, nnz*nnx*nny*sizeof(float));
cudaMemset(g_w0, 0, nnz*nnx*nny*sizeof(float)); cudaMemset(g_w1, 0, nnz*nnx*nny*sizeof(float));
cudaMemset(g_P, 0, nnz*nnx*nny*sizeof(float)); cudaMemset(g_Q, 0, nnz*nnx*nny*sizeof(float));
cudaMemset(g_px0, 0, nnz*nnx*nny*sizeof(float)); cudaMemset(g_px1, 0, nnz*nnx*nny*sizeof(float));
cudaMemset(g_py0, 0, nnz*nnx*nny*sizeof(float)); cudaMemset(g_py1, 0, nnz*nnx*nny*sizeof(float));
cudaMemset(g_pz0, 0, nnz*nnx*nny*sizeof(float)); cudaMemset(g_pz1, 0, nnz*nnx*nny*sizeof(float));
cudaMemset(g_qx0, 0, nnz*nnx*nny*sizeof(float)); cudaMemset(g_qx1, 0, nnz*nnx*nny*sizeof(float));
cudaMemset(g_qy0, 0, nnz*nnx*nny*sizeof(float)); cudaMemset(g_qy1, 0, nnz*nnx*nny*sizeof(float));
cudaMemset(g_qz0, 0, nnz*nnx*nny*sizeof(float)); cudaMemset(g_qz1, 0, nnz*nnx*nny*sizeof(float));
cudaMemset(s_P_bndr, 0, nt*(2*nx*ny+2*nz*ny+2*nx*nz)*sizeof(float));
cudaMemset(s_Q_bndr, 0, nt*(2*nx*ny+2*nz*ny+2*nx*nz)*sizeof(float));
cudaMemset(shot_Dev, 0, nt*nx*ny*sizeof(float));
for(it=0,t=dt;it<nt;it++,t+=dt)
{
if(it%100==0)printf("--- IS===%d it===%d\n",is,it);
add_source<<<1,1>>>(pfac,fsx,fsy,zs,nx,ny,nz,nnx,nny,nnz,dt,t,favg,wtype,npml,is,dsx,dsy,s_P,s_Q,nsx);
update_vel<<<dimg,dimb>>>(nx,ny,nz,nnx,nny,nnz,npml,dt,dx,dy,dz,
s_u0,s_v0,s_w0,s_u1,s_v1,s_w1,s_P,s_Q,coffx1,coffx2,coffy1,coffy2,coffz1,coffz2);
update_stress<<<dimg,dimb>>>(nx,ny,nz,nnx,nny,nnz,dt,dx,dy,dz,s_u1,s_v1,s_w1,s_P,s_Q,vp,npml,
s_px1,s_px0,s_py1,s_py0,s_pz1,s_pz0,s_qx1,s_qx0,s_qy1,s_qy0,s_qz1,s_qz0,
acoffx1,acoffx2,acoffy1,acoffy2,acoffz1,acoffz2,deta,epsilu,
fsx, dsx, fsy, dsy,zs, is, nsx, true);
s_u0=s_u1; s_v0=s_v1; s_w0=s_w1; s_px0=s_px1; s_py0=s_py1; s_pz0=s_pz1; s_qx0=s_qx1; s_qy0=s_qy1; s_qz0=s_qz1;
wavefield_bndr<<<(2*nx*ny+2*nz*ny+2*nx*nz+511)/512, 512>>>(nnx,nny,nnz,nx,ny,nz,npml,it,nt,s_P,s_Q,s_P_bndr,s_Q_bndr,true);
shot_record<<<(nx*ny+511)/512, 512>>>(nnx,nny, nnz, nx, ny, nz, npml, it, nt, s_P, s_Q, shot_Dev, true);
cal_illumination<<<dimg,dimb>>>(nnx,nny,nnz,nx,ny,nz,npml,illumination,s_P,s_Q);
/* if((is==0)&&(it!=0&&it%100==0))
{
cudaMemcpy(e, s_P, nnz*nnx*nny*sizeof(float), cudaMemcpyDeviceToHost);
// fseek(fpsnap,(int)(it/100-1)*(nx*ny*nz)*4L,0);
window3d(v, e, nz, nx, ny, nnz, nnx, npml);
fwrite(v,4L,nx*nz*ny,fpsnap);
} */
}//it loop end
mute_directwave<<<Xdimg,dimb>>>(nx,ny,nt,dt,favg,dx,dy,dz,fsx,fsy,dsx,dsy,zs,is,vp,epsilu,shot_Dev,70,nsx);
// if(is==0){
cudaMemcpy(shot_Hos, shot_Dev, nt*nx*ny*sizeof(float), cudaMemcpyDeviceToHost);
// fseek(fpshot,is*nt*nx*ny*sizeof(float),0);
fwrite(shot_Hos,sizeof(float),nt*nx*ny,fpshot);
// }
for(it=nt-1;it>=0;it--)
{
if(it%100==0)printf("--- IS===%d it===%d\n",is,it);
wavefield_bndr<<<(2*nx*ny+2*nz*ny+2*nx*nz+511)/512, 512>>>(nnx,nny,nnz,nx,ny,nz,npml,it,nt,s_P,s_Q,s_P_bndr,s_Q_bndr,false);
update_vel<<<dimg,dimb>>>(nx,ny,nz,nnx,nny,nnz,npml,dt,dx,dy,dz,
s_u0,s_v0,s_w0,s_u1,s_v1,s_w1,s_P,s_Q,coffx1,coffx2,coffy1,coffy2,coffz1,coffz2);
update_stress<<<dimg,dimb>>>(nx,ny,nz,nnx,nny,nnz,dt,dx,dy,dz,s_u1,s_v1,s_w1,s_P,s_Q,vp,npml,
s_px1,s_px0,s_py1,s_py0,s_pz1,s_pz0,s_qx1,s_qx0,s_qy1,s_qy0,s_qz1,s_qz0,
acoffx1,acoffx2,acoffy1,acoffy2,acoffz1,acoffz2,deta,epsilu,
fsx, dsx, fsy, dsy,zs, is, nsx, true);
s_u0=s_u1; s_v0=s_v1; s_w0=s_w1; s_px0=s_px1; s_py0=s_py1; s_pz0=s_pz1; s_qx0=s_qx1; s_qy0=s_qy1; s_qz0=s_qz1;
/* if((is==0)&&(it!=0&&it%100==0))
{
cudaMemcpy(e, s_P, nnz*nnx*nny*sizeof(float), cudaMemcpyDeviceToHost);
// fseek(fpsnap,(int)(it/100-1)*(nx*ny*nz)*4L,0);
window3d(v, e, nz, nx, ny, nnz, nnx, npml);
fwrite(v,4L,nx*nz*ny,fpsnap);
} */
shot_record<<<(nx*ny+511)/512, 512>>>(nnx,nny, nnz, nx, ny, nz, npml, it, nt, g_P, g_Q, shot_Dev, false);
update_vel<<<dimg,dimb>>>(nx,ny,nz,nnx,nny,nnz,npml,dt,dx,dy,dz,
g_u0,g_v0,g_w0,g_u1,g_v1,g_w1,g_P,g_Q,coffx1,coffx2,coffy1,coffy2,coffz1,coffz2);
update_stress<<<dimg,dimb>>>(nx,ny,nz,nnx,nny,nnz,dt,dx,dy,dz,g_u1,g_v1,g_w1,g_P,g_Q,vp,npml,
g_px1,g_px0,g_py1,g_py0,g_pz1,g_pz0,g_qx1,g_qx0,g_qy1,g_qy0,g_qz1,g_qz0,
acoffx1,acoffx2,acoffy1,acoffy2,acoffz1,acoffz2,deta,epsilu,
fsx, dsx, fsy, dsy,zs, is, nsx, true);
g_u0=g_u1; g_v0=g_v1; g_w0=g_w1; g_px0=g_px1; g_py0=g_py1; g_pz0=g_pz1; g_qx0=g_qx1; g_qy0=g_qy1; g_qz0=g_qz1;
/* if((is==0)&&(it!=0&&it%100==0))
{
cudaMemcpy(e, g_P, nnz*nnx*nny*sizeof(float), cudaMemcpyDeviceToHost);
// fseek(fpsnap,(int)(it/100-1)*(nx*ny*nz)*4L,0);
window3d(v, e, nz, nx, ny, nnz, nnx, npml);
fwrite(v,4L,nx*nz*ny,fpsnap);
} */
cal_illumination<<<dimg,dimb>>>(nnx,nny,nnz,nx,ny,nz,npml,illumination,g_P,g_Q);
cal_migration<<<dimg,dimb>>>(nnx,nny,nnz,nx,ny,nz,npml,migration,s_P,g_P);
Poynting_Adcigs<<<Adimg,dimb>>>(nnx,nny,nnz,nx,ny,nz,npml,na,da,adcigs,dcdp,
s_P,s_Q,s_u0,s_v0,s_w0,g_P,g_Q,g_u0,g_v0,g_w0);
}//it loop end
is_t1 = clock();
printf("IS=%3d: %f (min)\n", is, ((float)(is_t1-is_t0))/60.0/CLOCKS_PER_SEC);
}//is loop end
migration_illum<<<dimg,dimb>>>(nnx,nny,nnz,nx,ny,nz,npml,illumination,migration);
adcigs_illum<<<Adimg,dimb>>>(nnx,nny,nnz,nx,ny,nz,npml,na,adcigs,dcdp,illumination);
cudaMemcpy(v, illumination, nz*nx*ny*sizeof(float), cudaMemcpyDeviceToHost);
fwrite(v,4L,nx*nz*ny,fpillum);
cudaMemcpy(v, migration, nz*nx*ny*sizeof(float), cudaMemcpyDeviceToHost);
fwrite(v,4L,nx*nz*ny,fpmig);
laplace_3d_filter(1, nz, nx, ny, v, e);
fwrite(e,4L,nx*nz*ny,fpmigla);
cudaMemcpy(Atemp, adcigs, nz*nxa*nya*na*sizeof(float), cudaMemcpyDeviceToHost);
fwrite(Atemp,sizeof(float),nz*nxa*nya*na,fpadcigs);
end = clock();
/*********IS Loop end*********/
printf("--- The forward is over \n");
printf("--- Complete!!!!!!!!! \n");
printf("total %d shots: %f (min)\n", ns, ((float)(end-start))/60.0/CLOCKS_PER_SEC);
/***********close************/
fclose(fpsnap); fclose(fpshot); fclose(fpmig);fclose(fpmigla); fclose(fpillum); fclose(fpadcigs);
/***********free*************/
cudaFree(coffx1); cudaFree(coffx2);