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Toa_gpu_3dvti_fd_1orderfunciton.cu
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Toa_gpu_3dvti_fd_1orderfunciton.cu
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//a#########################################################
//a## 3D Acoustic VTI Medium Forward
//a##
//a## Ps :GPU(CUDA)
//a## Copyright (C) Rong Tao, all rights reserved
//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*epsilon);
//a## vpn^2=vp^2*(1+2*delta);
//a##
//a##*********a*******************/
//a##
//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;
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 *delta,float *epsilon,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);
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))))*epsilon[id];
dd = 0.5*(1-cos(pi*((sqrtf(rx*rx+ry*ry+rz*rz)-r)*4.0/(R*3.0-1))))*delta[id];
}
}else{
ee=epsilon[id];
dd=delta[id];
}
}else{
ee=epsilon[id];
dd=delta[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 *epsilon,float *delta,int npml)
{
int ix,iy,iz,id;
FILE *fp1,*fp2,*fp3;
if((fp1=fopen(FN1,"rb"))==NULL)printf("error open <%s>!\n",FN1);
if((fp2=fopen(FN2,"rb"))==NULL)printf("error open <%s>!\n",FN2);
if((fp3=fopen(FN3,"rb"))==NULL)printf("error open <%s>!\n",FN3);
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);//vv[id]=3000.0;
fread(&epsilon[id],4L,1,fp2);epsilon[id] *= 0.0;//epsilon[id] = (epsilon[id]-3000)/800.0*0.25;
fread(&delta[id],4L,1,fp3);delta[id] *= 0.0;//delta[id] = (delta[id]-3000)/800.0*0.1;
}
}
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 *shot)
{
int id=threadIdx.x+blockDim.x*blockIdx.x;
int ix=id%nx;
int iy=id/nx;
if(id<nx*ny)
{
shot[it+nt*ix+nt*nx*iy]=P[npml+nnz*(ix+npml)+nnz*nnx*(iy+npml)];
}
}
/*************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 *epsilon,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_z=dz*zs;
mu_t0=sqrtf(pow(mu_x,2)+pow(mu_y,2)+pow(mu_z,2))/(vp[1]*sqrtf(1+2*epsilon[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;
}
}
/* 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*epsilon[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;
} */
}
//a########################################################################
int main(int argc,char *argv[])
{
int is, it, nx, ny, nz, nnx, nny, nnz, nt, wtype;
int ns, nsx, dsx, fsx, dsy, fsy, zs, npml;
float dx, dy, dz, dt, t, pfac, favg;
float *v, *e, *d;
float *vp, *epsilon, *delta;
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, *shot_Dev, *shot_Hos;
float *coffx1,*coffx2,*coffy1,*coffy2,*coffz1,*coffz2;
float *acoffx1,*acoffx2,*acoffy1,*acoffy2,*acoffz1,*acoffz2;
clock_t start, end;
/*************wavelet\boundary**************/
wtype=1;npml=20;
/********** dat document ***********/
char FN1[250]={"waxian_vel_301301201.dat"};
char FN2[250]={"waxian_eps_301301201.dat"};
char FN3[250]={"waxian_del_301301201.dat"};
char FN4[250]={"waxian_shot_1501_iso_mute.dat"};
char FN5[250]={"waxian_snap.dat"};
/********aaa************/
FILE *fpsnap, *fpshot;
fpshot=fopen(FN4,"wb");
fpsnap=fopen(FN5,"wb");
/********* parameters *************/
nx=301;
ny=301;
nz=201; favg=30; pfac=10.0;
dx=10.0;
dy=10.0;
dz=10.0;
nt=1501;
dt=0.001;
ns=1; nsx=1;
fsx=nx/nsx/2;
dsx=nx/nsx;
fsy=ny/(ns/nsx)/2;
dsy=ny/(ns/nsx);
zs=1;
/*************v***************/
nnx=nx+2*npml;
nny=ny+2*npml;
nnz=nz+2*npml;
/************a*************/
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 Xdimg, dimg, dimb;
Xdimg.x=(nnx+BlockSize1-1)/BlockSize1;
Xdimg.y=(nny+BlockSize2-1)/BlockSize2;
dimg.x=(nnz+BlockSize1-1)/BlockSize1;
dimg.y=(nnx+BlockSize2-1)/BlockSize2;
dimb.x=BlockSize1;
dimb.y=BlockSize2;
/****************************/
cudaMalloc(&vp, nnz*nnx*nny*sizeof(float));
cudaMalloc(&epsilon, nnz*nnx*nny*sizeof(float));
cudaMalloc(&delta, nnz*nnx*nny*sizeof(float));
cudaMemcpy(vp, v, nnz*nnx*nny*sizeof(float), cudaMemcpyHostToDevice);
cudaMemcpy(epsilon, e, nnz*nnx*nny*sizeof(float), cudaMemcpyHostToDevice);
cudaMemcpy(delta, 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(&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(&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);
printf("--------------------------------------------------------\n");
printf("--- \n");
start = clock();
/**********IS Loop start*******/
for(is=0;is<ns;is++)
{
// printf("--- IS=%3d \n",is);
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(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,delta,epsilon,
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;
shot_record<<<(nx*ny+511)/512, 512>>>(nnx,nny, nnz, nx,ny, nz, npml, it, nt, s_P, shot_Dev);
if((is==1)&&(it!=0&&it%300==0))
{
cudaMemcpy(e, s_P, nnz*nnx*nny*sizeof(float), cudaMemcpyDeviceToHost);
fseek(fpsnap,(int)(it/300-1)*(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,epsilon,shot_Dev,60,nsx);
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);
}//is loop end
end = clock();
/*********IS Loop end*********/
printf("--- The forward is over \n");
printf("--- Complete!!!!!!!!! \n");
printf("total %d shots: %f (s)\n", ns, ((float)(end-start))/CLOCKS_PER_SEC);
/***********close************/
fclose(fpsnap); fclose(fpshot);
/***********free*************/
cudaFree(coffx1); cudaFree(coffx2);
cudaFree(coffz1); cudaFree(coffz2);
cudaFree(acoffx1); cudaFree(acoffx2);
cudaFree(acoffz1); cudaFree(acoffz2);
cudaFree(s_u0); cudaFree(s_u1);
cudaFree(s_v0); cudaFree(s_v1);
cudaFree(s_w0); cudaFree(s_w1);
cudaFree(s_P); cudaFree(s_Q);
cudaFree(s_px0); cudaFree(s_px1);
cudaFree(s_py0); cudaFree(s_py1);
cudaFree(s_pz0); cudaFree(s_pz1);
cudaFree(s_qx0); cudaFree(s_qx1);
cudaFree(s_qy0); cudaFree(s_qy1);
cudaFree(s_qz0); cudaFree(s_qz1);
cudaFree(shot_Dev);
/***************host free*****************/
free(v); free(e); free(d);
free(shot_Hos);
}