IFOS2D.c 241 KB
Newer Older
Tilman Steinweg's avatar
Tilman Steinweg committed
1
/*-----------------------------------------------------------------------------------------
Florian Wittkamp's avatar
Florian Wittkamp committed
2
 * Copyright (C) 2016  For the list of authors, see file AUTHORS.
Tilman Steinweg's avatar
Tilman Steinweg committed
3
 *
Florian Wittkamp's avatar
Florian Wittkamp committed
4
 * This file is part of IFOS.
5
 *
Florian Wittkamp's avatar
Florian Wittkamp committed
6
 * IFOS is free software: you can redistribute it and/or modify
Tilman Steinweg's avatar
Tilman Steinweg committed
7 8
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, version 2.0 of the License only.
9
 *
Florian Wittkamp's avatar
Florian Wittkamp committed
10
 * IFOS is distributed in the hope that it will be useful,
Tilman Steinweg's avatar
Tilman Steinweg committed
11 12 13
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
14
 *
Tilman Steinweg's avatar
Tilman Steinweg committed
15
 * You should have received a copy of the GNU General Public License
Florian Wittkamp's avatar
Florian Wittkamp committed
16
 * along with IFOS. See file COPYING and/or <http://www.gnu.org/licenses/gpl-2.0.html>.
17
 -----------------------------------------------------------------------------------------*/
Tilman Steinweg's avatar
Tilman Steinweg committed
18 19

/* ----------------------------------------------------------------------
Florian Wittkamp's avatar
Florian Wittkamp committed
20
 * This is program IFOS.
21
 * Inversion of Full Observerd Seismograms
22 23
 *
 *  ----------------------------------------------------------------------*/
Tilman Steinweg's avatar
Tilman Steinweg committed
24 25 26 27 28 29 30 31 32 33


#include "fd.h"           /* general include file for viscoelastic FD programs */

#include "globvar.h"      /* definition of global variables  */
#include "cseife.h"

#include "stfinv/stfinv.h" /* libstfinv - inversion for source time function */

int main(int argc, char **argv){
34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56
    /* variables in main */
    int ns, nseismograms=0, nt, nd, fdo3, j, i, ii, jj, shotid, recid, k, nc, iter, h, infoout, SHOTINC, TIMEWIN, test_eps, lq, iq, jq, hin, hin1, s=0;
    int NTDTINV, nxny, nxnyi, imat, imat1, imat2, IDXI, IDYI, hi, NTST, NTSTI, partest;
    int lsnap, nsnap=0, lsamp=0, buffsize, invtime, invtimer, sws, swstestshot, snapseis, snapseis1, PML;
    int ntr=0, ntr_loc=0, ntr_glob=0, nsrc=0, nsrc_loc=0, nsrc_glob=0, ishot, irec, nshots=0, nshots1, Lcount, itest, Lcountsum, itestshot;
    
    float pum, ppim, ppim1, ppim2, thetaf, thetab, e33, e33b, e11, e11b, muss, lamss;
    float memdyn, memmodel, memseismograms, membuffer, memtotal, dngn, fphi, sum, avggrad, beta, betan, betaz, betaLog, betaVp, betaVs, betarho, eps_scale, L2old;
    float fac1, fac2, wavefor, waverecipro, dump, dump1, epsilon, gradsign, mun, eps1, gradplastiter, gradglastiter, gradclastiter, betar, sig_max, sig_max1;
    float signL1, RMS, opteps_vp, opteps_vs, opteps_rho, Vs, Vp, Vp_avg, C_vp, Vs_avg, C_vs, Cd, rho_avg, C_rho, Vs_sum, Vp_sum, rho_sum, Zp, Zs;
    float freqshift, dfreqshift, memfwt, memfwt1, memfwtdata;
    char *buff_addr, ext[10], *fileinp;
    char wave_forward[225], wave_recipro[225], wave_conv[225], jac[225], jac2[225], jacsum[225], dwavelet[225], vyf[STRING_SIZE];
    
    double time1, time2, time3, time4, time5, time6, time7, time8,
    time_av_v_update=0.0, time_av_s_update=0.0, time_av_v_exchange=0.0,
    time_av_s_exchange=0.0, time_av_timestep=0.0;
    
    float L2, L2sum, L2_all_shots, L2sum_all_shots, *L2t, alphanomsum, alphanom, alphadenomsum, alphadenom, scaleamp ,sdummy, lamr;
    int sum_killed_traces=0, sum_killed_traces_testshots=0, killed_traces=0, killed_traces_testshots=0;
    int *ptr_killed_traces=&killed_traces, *ptr_killed_traces_testshots=&killed_traces_testshots;
    
    float energy, energy_sum, energy_all_shots, energy_sum_all_shots;
Florian Wittkamp's avatar
Florian Wittkamp committed
57 58
    float energy_SH, energy_sum_SH, energy_all_shots_SH, energy_sum_all_shots_SH;
    float L2_SH, L2sum_SH, L2_all_shots_SH, L2sum_all_shots_SH;
59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76
    
    // Pointer for dynamic wavefields:
    float  **  psxx, **  psxy, **  psyy, **  psxz, **  psyz, **psp, ** ux, ** uy, ** uz, ** uxy, ** uyx, ** Vp0, ** uttx, ** utty, ** Vs0, ** Rho0;
    float  **  pvx, **  pvy, **  pvz, **waveconv, **waveconv_lam, **waveconv_mu, **waveconv_rho, **waveconv_rho_s, **waveconv_u, **waveconvtmp, **wcpart, **wavejac,**waveconv_rho_s_z,**waveconv_u_z,**waveconv_rho_z;
    float **waveconv_shot, **waveconv_u_shot, **waveconv_rho_shot, **waveconv_u_shot_z, **waveconv_rho_shot_z;
    float  **  pvxp1, **  pvyp1, **  pvzp1, **  pvxm1, **  pvym1, **  pvzm1;
    float ** gradg, ** gradp,** gradg_rho, ** gradp_rho, ** gradg_u, ** gradp_u, ** gradp_u_z,** gradp_rho_z;
    float  **  prho,**  prhonp1, **prip=NULL, **prjp=NULL, **pripnp1=NULL, **prjpnp1=NULL, **  ppi, **  pu, **  punp1, **  puipjp, **  ppinp1;
    float  **  vpmat, ***forward_prop_x, ***forward_prop_y, ***forward_prop_rho_x, ***forward_prop_u, ***forward_prop_rho_y, ***forward_prop_p;
    
    float ***forward_prop_z_xz,***forward_prop_z_yz,***forward_prop_rho_z,**waveconv_mu_z;
    float ** uxz, ** uyz;
    
    float  ** sectionvx=NULL, ** sectionvy=NULL, ** sectionvz=NULL, ** sectionp=NULL, ** sectionpnp1=NULL,
    ** sectioncurl=NULL, ** sectiondiv=NULL, ** sectionvxdata=NULL, ** sectionvydata=NULL, ** sectionvzdata=NULL, ** sectionvxdiff=NULL, ** sectionvzdiff=NULL, ** sectionvxdiffold=NULL, ** sectionvydiffold=NULL, ** sectionvzdiffold=NULL,** sectionpdata=NULL, ** sectionpdiff=NULL, ** sectionpdiffold=NULL,
    ** sectionvydiff=NULL, ** sectionpn=NULL, ** sectionread=NULL, ** sectionvy_conv=NULL, ** sectionvy_obs=NULL, ** sectionvx_conv=NULL,** sectionvx_obs=NULL, ** sectionvz_conv=NULL,** sectionvz_obs=NULL,
    ** sectionp_conv=NULL,** sectionp_obs=NULL, * source_time_function=NULL;
    float  **  absorb_coeff, ** taper_coeff, * epst1, * epst2,  * epst3, * picked_times;
77
    float  ** srcpos=NULL, **srcpos_loc=NULL, ** srcpos1=NULL, **srcpos_loc_back=NULL, ** signals=NULL,** signals_SH=NULL, ** signals_rec=NULL, *hc=NULL;
78 79 80 81 82 83 84 85 86 87 88 89 90 91
    int   ** recpos=NULL, ** recpos_loc=NULL;
    /*int   ** tracekill=NULL, TRKILL, DTRKILL;*/
    int * DTINV_help;
    
    float ** bufferlef_to_rig,  ** bufferrig_to_lef, ** buffertop_to_bot, ** bufferbot_to_top;
    
    /* PML variables */
    float * d_x, * K_x, * alpha_prime_x, * a_x, * b_x, * d_x_half, * K_x_half, * alpha_prime_x_half, * a_x_half, * b_x_half, * d_y, * K_y, * alpha_prime_y, * a_y, * b_y, * d_y_half, * K_y_half, * alpha_prime_y_half, * a_y_half, * b_y_half;
    float ** psi_sxx_x, ** psi_syy_y, ** psi_sxy_y, ** psi_sxy_x, ** psi_vxx, ** psi_vyy, ** psi_vxy, ** psi_vyx, ** psi_vxxs;
    float ** psi_sxz_x, ** psi_syz_y, ** psi_vzx, ** psi_vzy;
    
    /* Variables for viscoelastic modeling */
    float **ptaus=NULL, **ptaup=NULL, *etaip=NULL, *etajm=NULL, *peta=NULL, **ptausipjp=NULL, **fipjp=NULL, ***dip=NULL, *bip=NULL, *bjm=NULL;
    float *cip=NULL, *cjm=NULL, ***d=NULL, ***e=NULL, ***pr=NULL, ***pp=NULL, ***pq=NULL, **f=NULL, **g=NULL;
92
    float ***pt=NULL, ***po=NULL; // SH Simulation
93 94 95 96 97 98 99
    
    /* Variables for step length calculation */
    int step1, step2, step3=0, itests, iteste, stepmax, countstep;
    float scalefac;
    
    /* Variables for Pseudo-Hessian calculation */
    int RECINC, ntr1;
100
    int SOURCE_SHAPE_OLD;
101 102
    
    /* Variables for L-BFGS */
103
    int LBFGS=0,LBFGS_NPAR=3;
104 105
    int LBFGS_iter_start=1;
    float LBFGS_L2_temp;
Florian Wittkamp's avatar
Florian Wittkamp committed
106
    float **s_LBFGS,**y_LBFGS, *rho_LBFGS;
107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149
    int l=0;
    int w=0;
    int m=0;
    
    /* Check wolfe */
    int steplength_search=0;
    int FWI_run=1;
    int gradient_optimization=1;
    float alpha_SL_min=0, alpha_SL_max=0, alpha_SL=1.0;
    float alpha_SL_old;
    float ** waveconv_old,** waveconv_u_old,** waveconv_rho_old;
    float ** waveconv_up,** waveconv_u_up,** waveconv_rho_up;
    float L2_SL_old=0, L2_SL_new=0;
    float c1_SL=1e-4, c2_SL=0.9;
    int wolfe_status;
    int wolfe_sum_FWI=0;
    int wolfe_found_lower_L2=0;
    float alpha_SL_FS;
    float L2_SL_FS;
    int use_wolfe_failsafe=0;
    int wolfe_SLS_failed=0;
    
    /* Variables for energy weighted gradient */
    float ** Ws, **Wr, **We;
    float ** Ws_SH, **Wr_SH, **We_SH;
    float ** We_sum,** We_sum_SH;
    float We_sum_max1;
    float We_max_SH,We_max;
    
    int * recswitch=NULL;
    float ** fulldata=NULL, ** fulldata_vx=NULL, ** fulldata_vy=NULL, ** fulldata_vz=NULL, ** fulldata_p=NULL, ** fulldata_curl=NULL, ** fulldata_div=NULL;
    
    /* different modelling types */
    int mod_type=0;
    
    /*vector for abort criterion*/
    float * L2_hist=NULL;
    
    /* help variable for MIN_ITER */
    int min_iter_help=0;
    
    float ** workflow=NULL;
    int workflow_lines;
150
    char workflow_header[STRING_SIZE];
151 152
    int change_wavetype_iter=-10; /* Have to be inialized negative */
    int wavetype_start; /* We need this due to MPI Comm */
153 154
    int buf1=0, buf2=0;
    WORKFLOW_STAGE=1;
155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193
    
    /* variable for time domain filtering */
    float FC;
    float *FC_EXT=NULL;
    int nfrq=0;
    int FREQ_NR=1;
    /* declaration of variables for trace killing */
    int ** kill_tmp;
    FILE *ftracekill;
    
    FILE *fprec, *FP2, *FP3, *FP4, *FP5, *FPL2, *FP6, *FP7;
    
    /* General parameters */
    int nt_out;
    
    MPI_Request *req_send, *req_rec;
    MPI_Status  *send_statuses, *rec_statuses;
    
    /* Initialize MPI environment */
    MPI_Init(&argc,&argv);
    MPI_Comm_size(MPI_COMM_WORLD,&NP);
    MPI_Comm_rank(MPI_COMM_WORLD,&MYID);
    
    setvbuf(stdout, NULL, _IONBF, 0);
    
    if (MYID == 0){
        time1=MPI_Wtime();
        clock();
    }
    
    /* print program name, version etc to stdout*/
    if (MYID == 0) info(stdout);
    
    /* read parameters from parameter-file (stdin) */
    fileinp=argv[1];
    FP=fopen(fileinp,"r");
    if(FP==NULL) {
        if (MYID == 0){
            printf("\n==================================================================\n");
Florian Wittkamp's avatar
Florian Wittkamp committed
194
            printf(" Cannot open IFOS input file %s \n",fileinp);
195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216
            printf("\n==================================================================\n\n");
            err(" --- ");
        }
    }
    
    /* read json formatted input file */
    read_par_json(stdout,fileinp);
    
    exchange_par();
    
    wavetype_start=WAVETYPE;
    if (MYID == 0) note(stdout);
    
    
    /* open log-file (each PE is using different file) */
    /*	fp=stdout; */
    sprintf(ext,".%i",MYID);
    strcat(LOG_FILE,ext);
    
    /* If Verbose==0, no PE will write a log file */
    if(!VERBOSE) sprintf(LOG_FILE,"/dev/null");
    
Florian Wittkamp's avatar
Florian Wittkamp committed
217
    if ((MYID==0)) FP=stdout;
218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385
    else {
        FP=fopen(LOG_FILE,"w");
    }
    fprintf(FP," This is the log-file generated by PE %d \n\n",MYID);
    
    /* domain decomposition */
    initproc();
    
    NT=iround(TIME/DT);  	  /* number of timesteps */
    /*ns=iround(NT/NDT);*/           /* number of samples per trace */
    ns=NT;	/* in a FWI one has to keep all samples of the forward modeled data
             at the receiver positions to calculate the adjoint sources and to do
             the backpropagation; look at function saveseis_glob.c to see that every
             NDT sample for the forward modeled wavefield is written to su files*/
    lsnap=iround(TSNAP1/DT);      /* first snapshot at this timestep */
    lsamp=NDT;
    
    
    /* output of parameters to log-file or stdout */
    if (MYID==0) write_par(FP);
    
    
    /* NXG, NYG denote size of the entire (global) grid */
    NXG=NX;
    NYG=NY;
    
    /* In the following, NX and NY denote size of the local grid ! */
    NX = IENDX;
    NY = IENDY;
    
    
    if (SEISMO){
        recpos=receiver(FP, &ntr);
        recswitch = ivector(1,ntr);
        recpos_loc = splitrec(recpos,&ntr_loc, ntr, recswitch);
        ntr_glob=ntr;
        ntr=ntr_loc;
    }
    
    /* memory allocation for abort criterion*/
    L2_hist = vector(1,1000);
    
    if(INV_STF) fulldata = matrix(1,ntr_glob,1,NT);
    
    /* estimate memory requirement of the variables in megabytes*/
    
    switch (SEISMO){
        case 1 : /* particle velocities only */
            nseismograms=2;
            break;
        case 2 : /* pressure only */
            nseismograms=1;
            break;
        case 3 : /* curl and div only */
            nseismograms=2;
            break;
        case 4 : /* everything */
            nseismograms=5;
            break;
        case 5 : /* everything except curl and div */
            nseismograms=3;
            break;
    }
    
    /* use only every DTINV time sample for the inversion */
    /*DTINV=15;*/
    DTINV_help=ivector(1,NT);
    NTDTINV=ceil((float)NT/(float)DTINV);		/* round towards next higher integer value */
    
    /* save every IDXI and IDYI spatial point during the forward modelling */
    IDXI=1;
    IDYI=1;
    
    /*allocate memory for dynamic, static and buffer arrays */
    fac1=(NX+FDORDER)*(NY+FDORDER);
    fac2=sizeof(float)*pow(2.0,-20.0);
    
    nd = FDORDER/2 + 1;
    
    // decide how much space for exchange is needed
    switch (WAVETYPE) {
        case 1:
            fdo3 = 2*nd;
            break;
        case 2:
            fdo3 = 1*nd;
            break;
        case 3:
            fdo3 = 3*nd;
            break;
        default:
            fdo3 = 2*nd;
            break;
    }
    
    
    if (L){
        memdyn=(5.0+3.0*(float)L)*fac1*fac2;
        memmodel=(12.0+3.0*(float)L)*fac1*fac2;
        
    } else {
        memdyn=5.0*fac1*fac2;
        memmodel=6.0*fac1*fac2;
    }
    memseismograms=nseismograms*ntr*ns*fac2;
    
    memfwt=5.0*((NX/IDXI)+FDORDER)*((NY/IDYI)+FDORDER)*NTDTINV*fac2;
    memfwt1=20.0*NX*NY*fac2;
    memfwtdata=6.0*ntr*ns*fac2;
    
    membuffer=2.0*fdo3*(NY+NX)*fac2;
    buffsize=2.0*2.0*fdo3*(NX+NY)*sizeof(MPI_FLOAT);
    memtotal=memdyn+memmodel+memseismograms+memfwt+memfwt1+memfwtdata+membuffer+(buffsize*pow(2.0,-20.0));
    
    
    if (MYID==0 && WAVETYPE == 1){
        fprintf(FP,"\n **Message from main (printed by PE %d):\n",MYID);
        fprintf(FP," Size of local grids: NX=%d \t NY=%d\n",NX,NY);
        fprintf(FP," Each process is now trying to allocate memory for:\n");
        fprintf(FP," Dynamic variables: \t\t %6.2f MB\n", memdyn);
        fprintf(FP," Static variables: \t\t %6.2f MB\n", memmodel);
        fprintf(FP," Seismograms: \t\t\t %6.2f MB\n", memseismograms);
        fprintf(FP," Buffer arrays for grid exchange:%6.2f MB\n", membuffer);
        fprintf(FP," Network Buffer for MPI_Bsend: \t %6.2f MB\n", buffsize*pow(2.0,-20.0));
        fprintf(FP," ------------------------------------------------ \n");
        fprintf(FP," Total memory required: \t %6.2f MB.\n\n", memtotal);
    }
    
    
    /* allocate buffer for buffering messages */
    buff_addr=malloc(buffsize);
    if (!buff_addr) err("allocation failure for buffer for MPI_Bsend !");
    MPI_Buffer_attach(buff_addr,buffsize);
    
    /* allocation for request and status arrays */
    req_send=(MPI_Request *)malloc(REQUEST_COUNT*sizeof(MPI_Request));
    req_rec=(MPI_Request *)malloc(REQUEST_COUNT*sizeof(MPI_Request));
    send_statuses=(MPI_Status *)malloc(REQUEST_COUNT*sizeof(MPI_Status));
    rec_statuses=(MPI_Status *)malloc(REQUEST_COUNT*sizeof(MPI_Status));
    
    
    /* memory allocation for dynamic (wavefield) arrays */
    if(!ACOUSTIC){
        switch (WAVETYPE) {
            case 1: // P and SV Waves
                psxx =  matrix(-nd+1,NY+nd,-nd+1,NX+nd);
                psxy =  matrix(-nd+1,NY+nd,-nd+1,NX+nd);
                psyy =  matrix(-nd+1,NY+nd,-nd+1,NX+nd);
                break;
                
            case 2: // SH Waves
                psxz =  matrix(-nd+1,NY+nd,-nd+1,NX+nd);
                psyz =  matrix(-nd+1,NY+nd,-nd+1,NX+nd);
                break;
                
            case 3: // P, SH and SV Waves
                psxx =  matrix(-nd+1,NY+nd,-nd+1,NX+nd);
                psxy =  matrix(-nd+1,NY+nd,-nd+1,NX+nd);
                psyy =  matrix(-nd+1,NY+nd,-nd+1,NX+nd);
                psxz =  matrix(-nd+1,NY+nd,-nd+1,NX+nd);
                psyz =  matrix(-nd+1,NY+nd,-nd+1,NX+nd);
                break;
        }
    }else{
        psp  =  matrix(-nd+1,NY+nd,-nd+1,NX+nd);
    }
    
    if(GRAD_METHOD==2) {
386
        /* Allocate memory for L-BFGS */
387
        
388
        if(WAVETYPE==2) LBFGS_NPAR=2;
389
        
390
        s_LBFGS=fmatrix(1,N_LBFGS,1,LBFGS_NPAR*NX*NY);
391
        
392
        y_LBFGS=fmatrix(1,N_LBFGS,1,LBFGS_NPAR*NX*NY);
393
        
394
        rho_LBFGS=vector(1,N_LBFGS);
395
        
396 397 398 399
        for(l=1;l<=N_LBFGS;l++){
            for(m=1;m<=LBFGS_NPAR*NX*NY;m++){
                s_LBFGS[l][m]=0.0;
                y_LBFGS[l][m]=0.0;
400
            }
401
            rho_LBFGS[l]=0.0;
402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 480 481 482 483 484 485 486 487 488 489 490 491 492 493 494 495 496 497 498 499 500 501 502 503 504 505 506 507 508 509 510 511 512 513 514 515 516 517 518 519 520 521 522 523 524 525 526
        }
    }
    
    if(!ACOUSTIC){
        if(WAVETYPE==1||WAVETYPE==3){
            ux   =  matrix(-nd+1,NY+nd,-nd+1,NX+nd);
            uy   =  matrix(-nd+1,NY+nd,-nd+1,NX+nd);
            uxy  =  matrix(-nd+1,NY+nd,-nd+1,NX+nd);
            uyx  =  matrix(-nd+1,NY+nd,-nd+1,NX+nd);
            uttx   =  matrix(-nd+1,NY+nd,-nd+1,NX+nd);
            utty   =  matrix(-nd+1,NY+nd,-nd+1,NX+nd);
        }
        if(WAVETYPE==2||WAVETYPE==3){
            uxz   =  matrix(-nd+1,NY+nd,-nd+1,NX+nd);
            uyz   =  matrix(-nd+1,NY+nd,-nd+1,NX+nd);
        }
    }
    
    switch (WAVETYPE) {
        case 1: // P and SV Waves
            pvx  =  matrix(-nd+1,NY+nd,-nd+1,NX+nd);
            pvy  =  matrix(-nd+1,NY+nd,-nd+1,NX+nd);
            pvxp1  =  matrix(-nd+1,NY+nd,-nd+1,NX+nd);
            pvyp1  =  matrix(-nd+1,NY+nd,-nd+1,NX+nd);
            pvxm1  =  matrix(-nd+1,NY+nd,-nd+1,NX+nd);
            pvym1  =  matrix(-nd+1,NY+nd,-nd+1,NX+nd);
            break;
            
        case 2: // SH Waves
            pvz  =  matrix(-nd+1,NY+nd,-nd+1,NX+nd);
            pvzp1  =  matrix(-nd+1,NY+nd,-nd+1,NX+nd);
            pvzm1  =  matrix(-nd+1,NY+nd,-nd+1,NX+nd);
            break;
            
        case 3: // P and SV Waves
            pvx  =  matrix(-nd+1,NY+nd,-nd+1,NX+nd);
            pvy  =  matrix(-nd+1,NY+nd,-nd+1,NX+nd);
            pvxp1  =  matrix(-nd+1,NY+nd,-nd+1,NX+nd);
            pvyp1  =  matrix(-nd+1,NY+nd,-nd+1,NX+nd);
            pvxm1  =  matrix(-nd+1,NY+nd,-nd+1,NX+nd);
            pvym1  =  matrix(-nd+1,NY+nd,-nd+1,NX+nd);
            pvz  =  matrix(-nd+1,NY+nd,-nd+1,NX+nd);
            pvzp1  =  matrix(-nd+1,NY+nd,-nd+1,NX+nd);
            pvzm1  =  matrix(-nd+1,NY+nd,-nd+1,NX+nd);
            break;
    }
    
    Vp0  =  matrix(-nd+1,NY+nd,-nd+1,NX+nd);
    if(!ACOUSTIC)
        Vs0  =  matrix(-nd+1,NY+nd,-nd+1,NX+nd);
    Rho0  =  matrix(-nd+1,NY+nd,-nd+1,NX+nd);
    
    /* memory allocation for static (model) arrays */
    prho =  matrix(-nd+1,NY+nd,-nd+1,NX+nd);
    prhonp1 =  matrix(-nd+1,NY+nd,-nd+1,NX+nd);
    prip =  matrix(-nd+1,NY+nd,-nd+1,NX+nd);
    prjp =  matrix(-nd+1,NY+nd,-nd+1,NX+nd);
    pripnp1 =  matrix(-nd+1,NY+nd,-nd+1,NX+nd);
    prjpnp1 =  matrix(-nd+1,NY+nd,-nd+1,NX+nd);
    ppi  =  matrix(-nd+1,NY+nd,-nd+1,NX+nd);
    ppinp1  =  matrix(-nd+1,NY+nd,-nd+1,NX+nd);
    if(!ACOUSTIC){
        pu   =  matrix(-nd+1,NY+nd,-nd+1,NX+nd);
        punp1   =  matrix(-nd+1,NY+nd,-nd+1,NX+nd);
        puipjp   =  matrix(-nd+1,NY+nd,-nd+1,NX+nd);
    }
    vpmat   =  matrix(-nd+1,NY+nd,-nd+1,NX+nd);
    
    
    if((EPRECOND==1)||(EPRECOND==3)){
        if(WAVETYPE==1 || WAVETYPE==3) {
            We_sum = matrix(-nd+1,NY+nd,-nd+1,NX+nd);
            Ws = matrix(-nd+1,NY+nd,-nd+1,NX+nd); /* total energy of the source wavefield */
            Wr = matrix(-nd+1,NY+nd,-nd+1,NX+nd); /* total energy of the receiver wavefield */
            We = matrix(-nd+1,NY+nd,-nd+1,NX+nd); /* total energy of source and receiver wavefield */
        }
        if(WAVETYPE==2 || WAVETYPE==3) {
            We_sum_SH = matrix(-nd+1,NY+nd,-nd+1,NX+nd);
            Ws_SH = matrix(-nd+1,NY+nd,-nd+1,NX+nd); /* total energy of the source wavefield */
            Wr_SH = matrix(-nd+1,NY+nd,-nd+1,NX+nd); /* total energy of the receiver wavefield */
            We_SH = matrix(-nd+1,NY+nd,-nd+1,NX+nd); /* total energy of source and receiver wavefield */
        }
    }
    
    if (L) {
        /* dynamic (wavefield) arrays for viscoelastic modeling */
        pr = f3tensor(-nd+1,NY+nd,-nd+1,NX+nd,1,L);
        pp = f3tensor(-nd+1,NY+nd,-nd+1,NX+nd,1,L);
        pq = f3tensor(-nd+1,NY+nd,-nd+1,NX+nd,1,L);
        /* memory allocation for static arrays for viscoelastic modeling */
        dip = f3tensor(-nd+1,NY+nd,-nd+1,NX+nd,1,L);
        d =  f3tensor(-nd+1,NY+nd,-nd+1,NX+nd,1,L);
        e =  f3tensor(-nd+1,NY+nd,-nd+1,NX+nd,1,L);
        ptaus =  matrix(-nd+1,NY+nd,-nd+1,NX+nd);
        ptausipjp =  matrix(-nd+1,NY+nd,-nd+1,NX+nd);
        if(WAVETYPE==2 || WAVETYPE==3) {
            pt = f3tensor(-nd+1,NY+nd,-nd+1,NX+nd,1,L);
            po = f3tensor(-nd+1,NY+nd,-nd+1,NX+nd,1,L);
        }
        ptaup =  matrix(-nd+1,NY+nd,-nd+1,NX+nd);
        fipjp =  matrix(-nd+1,NY+nd,-nd+1,NX+nd);
        f =  matrix(-nd+1,NY+nd,-nd+1,NX+nd);
        g =  matrix(-nd+1,NY+nd,-nd+1,NX+nd);
        peta =  vector(1,L);
        etaip =  vector(1,L);
        etajm =  vector(1,L);
        bip =  vector(1,L);
        bjm =  vector(1,L);
        cip =  vector(1,L);
        cjm =  vector(1,L);
    }
    
    /*nf=4;
     nfstart=4;*/
    
    NTST=20;
    NTSTI=NTST/DTINV;
    
    nxny=NX*NY;
    nxnyi=(NX/IDXI)*(NY/IDYI);
    
    /* Parameters for step length calculations */
    stepmax = STEPMAX; /* number of maximum misfit calculations/steplength 2/3*/
    scalefac = SCALEFAC; /* scale factor for the step length */
    
527
    if(FORWARD_ONLY==0){
528 529 530 531 532 533 534 535 536 537 538 539 540 541 542 543 544 545 546 547 548 549 550 551 552 553 554 555 556 557 558 559 560 561 562 563 564 565 566 567 568 569
        waveconv = matrix(-nd+1,NY+nd,-nd+1,NX+nd);
        waveconv_lam = matrix(-nd+1,NY+nd,-nd+1,NX+nd);
        waveconv_shot = matrix(-nd+1,NY+nd,-nd+1,NX+nd);
        
        waveconvtmp = matrix(-nd+1,NY+nd,-nd+1,NX+nd);
        wcpart = matrix(1,3,1,3);
        wavejac = matrix(-nd+1,NY+nd,-nd+1,NX+nd);
        
        if(!ACOUSTIC){
            forward_prop_x =  f3tensor(-nd+1,NY+nd,-nd+1,NX+nd,1,NT/DTINV);
            forward_prop_y =  f3tensor(-nd+1,NY+nd,-nd+1,NX+nd,1,NT/DTINV);
        }else{
            forward_prop_p =  f3tensor(-nd+1,NY+nd,-nd+1,NX+nd,1,NT/DTINV);
        }
        gradg = matrix(-nd+1,NY+nd,-nd+1,NX+nd);
        gradp = matrix(-nd+1,NY+nd,-nd+1,NX+nd);
        
        if(WAVETYPE==1 || WAVETYPE==3){
            forward_prop_rho_x =  f3tensor(-nd+1,NY+nd,-nd+1,NX+nd,1,NT/DTINV);
            forward_prop_rho_y =  f3tensor(-nd+1,NY+nd,-nd+1,NX+nd,1,NT/DTINV);
        }
        if(WAVETYPE==2 || WAVETYPE==3){
            forward_prop_rho_z =  f3tensor(-nd+1,NY+nd,-nd+1,NX+nd,1,NT/DTINV);
            forward_prop_z_xz =  f3tensor(-nd+1,NY+nd,-nd+1,NX+nd,1,NT/DTINV);
            forward_prop_z_yz =  f3tensor(-nd+1,NY+nd,-nd+1,NX+nd,1,NT/DTINV);
            waveconv_rho_shot_z = matrix(-nd+1,NY+nd,-nd+1,NX+nd);
            waveconv_u_shot_z = matrix(-nd+1,NY+nd,-nd+1,NX+nd);
            waveconv_mu_z = matrix(-nd+1,NY+nd,-nd+1,NX+nd);
            waveconv_rho_s_z = matrix(-nd+1,NY+nd,-nd+1,NX+nd);
            waveconv_u_z = matrix(-nd+1,NY+nd,-nd+1,NX+nd);
            waveconv_rho_z = matrix(-nd+1,NY+nd,-nd+1,NX+nd);
            gradp_u_z = matrix(-nd+1,NY+nd,-nd+1,NX+nd);
            gradp_rho_z = matrix(-nd+1,NY+nd,-nd+1,NX+nd);
        }
        
        gradg_rho = matrix(-nd+1,NY+nd,-nd+1,NX+nd);
        gradp_rho = matrix(-nd+1,NY+nd,-nd+1,NX+nd);
        waveconv_rho = matrix(-nd+1,NY+nd,-nd+1,NX+nd);
        waveconv_rho_s = matrix(-nd+1,NY+nd,-nd+1,NX+nd);
        waveconv_rho_shot = matrix(-nd+1,NY+nd,-nd+1,NX+nd);
        
        if(WOLFE_CONDITION){
Florian Wittkamp's avatar
Florian Wittkamp committed
570 571 572 573
            
            c1_SL=WOLFE_C1_SL;
            c2_SL=WOLFE_C2_SL;
            
574
            waveconv_old= matrix(-nd+1,NY+nd,-nd+1,NX+nd);
Florian Wittkamp's avatar
Florian Wittkamp committed
575
            if(!ACOUSTIC) waveconv_u_old= matrix(-nd+1,NY+nd,-nd+1,NX+nd);
576 577 578
            waveconv_rho_old= matrix(-nd+1,NY+nd,-nd+1,NX+nd);
            
            waveconv_up= matrix(-nd+1,NY+nd,-nd+1,NX+nd);
Florian Wittkamp's avatar
Florian Wittkamp committed
579
            if(!ACOUSTIC) waveconv_u_up= matrix(-nd+1,NY+nd,-nd+1,NX+nd);
580 581 582 583 584 585 586 587 588 589 590 591 592 593 594 595 596 597 598 599 600 601 602 603 604 605 606 607 608 609 610 611 612 613 614 615 616 617 618 619 620 621 622 623 624 625 626 627 628 629 630 631 632 633 634 635 636 637 638 639 640 641 642 643 644 645 646 647 648 649 650 651 652 653 654 655 656 657 658 659 660 661 662 663 664 665 666 667 668 669 670 671 672 673 674 675 676 677 678 679 680 681 682 683 684 685 686 687 688 689 690 691 692 693 694 695 696 697 698 699 700 701 702 703 704 705 706 707 708 709 710 711 712 713 714 715 716 717 718 719 720 721 722 723 724 725 726 727 728 729 730 731 732 733 734 735 736 737 738 739 740 741 742 743 744 745 746 747 748 749 750 751 752 753 754 755 756 757 758 759 760 761 762 763 764 765 766 767 768 769 770 771 772 773 774 775 776 777 778 779 780 781 782 783 784 785 786 787 788 789 790 791 792 793 794 795 796 797 798 799 800 801 802 803 804 805 806 807 808 809 810 811 812 813 814 815 816 817 818 819 820 821 822 823 824 825 826 827 828 829 830 831 832 833 834 835 836 837 838 839 840 841 842 843 844 845 846 847 848 849 850 851 852 853 854 855 856 857 858 859 860 861 862 863 864 865 866 867 868
            waveconv_rho_up= matrix(-nd+1,NY+nd,-nd+1,NX+nd);
        }
        
        if(!ACOUSTIC){
            forward_prop_u =  f3tensor(-nd+1,NY+nd,-nd+1,NX+nd,1,NT/DTINV);
            gradg_u = matrix(-nd+1,NY+nd,-nd+1,NX+nd);
            gradp_u = matrix(-nd+1,NY+nd,-nd+1,NX+nd);
            waveconv_u = matrix(-nd+1,NY+nd,-nd+1,NX+nd);
            waveconv_mu = matrix(-nd+1,NY+nd,-nd+1,NX+nd);
            waveconv_u_shot = matrix(-nd+1,NY+nd,-nd+1,NX+nd);
        }
        
    }
    
    /* Allocate memory for boundary */
    if(FW>0){
        d_x = vector(1,2*FW);
        K_x = vector(1,2*FW);
        alpha_prime_x = vector(1,2*FW);
        a_x = vector(1,2*FW);
        b_x = vector(1,2*FW);
        
        d_x_half = vector(1,2*FW);
        K_x_half = vector(1,2*FW);
        alpha_prime_x_half = vector(1,2*FW);
        a_x_half = vector(1,2*FW);
        b_x_half = vector(1,2*FW);
        
        d_y = vector(1,2*FW);
        K_y = vector(1,2*FW);
        alpha_prime_y = vector(1,2*FW);
        a_y = vector(1,2*FW);
        b_y = vector(1,2*FW);
        
        d_y_half = vector(1,2*FW);
        K_y_half = vector(1,2*FW);
        alpha_prime_y_half = vector(1,2*FW);
        a_y_half = vector(1,2*FW);
        b_y_half = vector(1,2*FW);
        
        if (WAVETYPE==1||WAVETYPE==3){
            psi_sxx_x =  matrix(1,NY,1,2*FW);
            psi_syy_y =  matrix(1,2*FW,1,NX);
            psi_sxy_y =  matrix(1,2*FW,1,NX);
            psi_sxy_x =  matrix(1,NY,1,2*FW);
            psi_vxx   =  matrix(1,NY,1,2*FW);
            psi_vxxs  =  matrix(1,NY,1,2*FW);
            psi_vyy   =  matrix(1,2*FW,1,NX);
            psi_vxy   =  matrix(1,2*FW,1,NX);
            psi_vyx   =  matrix(1,NY,1,2*FW);
        }
        if(WAVETYPE==2||WAVETYPE == 3 ){
            psi_sxz_x =  matrix(1,NY,1,2*FW);
            psi_syz_y =  matrix(1,2*FW,1,NX);
            psi_vzx   =  matrix(1,NY,1,2*FW);
            psi_vzy   =  matrix(1,2*FW,1,NX);
        }
    }
    
    taper_coeff=  matrix(1,NY,1,NX);
    
    
    /* memory allocation for buffer arrays in which the wavefield
     information which is exchanged between neighbouring PEs is stored */
    bufferlef_to_rig = matrix(1,NY,1,fdo3);
    bufferrig_to_lef = matrix(1,NY,1,fdo3);
    buffertop_to_bot = matrix(1,NX,1,fdo3);
    bufferbot_to_top = matrix(1,NX,1,fdo3);
    
    /* Allocate memory to save full seismograms */
    switch (SEISMO){
        case 1 : /* particle velocities only */
            switch (WAVETYPE) {
                case 1:
                    fulldata_vx = matrix(1,ntr_glob,1,NT);
                    fulldata_vy = matrix(1,ntr_glob,1,NT);
                    break;
                    
                case 2:
                    fulldata_vz = matrix(1,ntr_glob,1,NT);
                    break;
                    
                case 3:
                    fulldata_vx = matrix(1,ntr_glob,1,NT);
                    fulldata_vy = matrix(1,ntr_glob,1,NT);
                    fulldata_vz = matrix(1,ntr_glob,1,NT);
                    break;
            }
            break;
        case 2 : /* pressure only */
            fulldata_p = matrix(1,ntr_glob,1,NT);
            break;
        case 3 : /* curl and div only */
            fulldata_div = matrix(1,ntr_glob,1,NT);
            fulldata_curl = matrix(1,ntr_glob,1,NT);
            break;
        case 4 : /* everything */
            switch (WAVETYPE) {
                case 1:
                    fulldata_vx = matrix(1,ntr_glob,1,NT);
                    fulldata_vy = matrix(1,ntr_glob,1,NT);
                    break;
                    
                case 2:
                    fulldata_vz = matrix(1,ntr_glob,1,NT);
                    break;
                    
                case 3:
                    fulldata_vx = matrix(1,ntr_glob,1,NT);
                    fulldata_vy = matrix(1,ntr_glob,1,NT);
                    fulldata_vz = matrix(1,ntr_glob,1,NT);
                    break;
            }
            fulldata_p = matrix(1,ntr_glob,1,NT);
            fulldata_div = matrix(1,ntr_glob,1,NT);
            fulldata_curl = matrix(1,ntr_glob,1,NT);
            break;
        case 5 : /* everything except curl and div*/
            switch (WAVETYPE) {
                case 1:
                    fulldata_vx = matrix(1,ntr_glob,1,NT);
                    fulldata_vy = matrix(1,ntr_glob,1,NT);
                    break;
                    
                case 2:
                    fulldata_vz = matrix(1,ntr_glob,1,NT);
                    break;
                    
                case 3:
                    fulldata_vx = matrix(1,ntr_glob,1,NT);
                    fulldata_vy = matrix(1,ntr_glob,1,NT);
                    fulldata_vz = matrix(1,ntr_glob,1,NT);
                    break;
            }
            fulldata_p = matrix(1,ntr_glob,1,NT);
            break;
            
    }
    if (ntr>0){
        switch (SEISMO){
            case 1 : /* particle velocities only */
                switch (WAVETYPE) {
                    case 1:
                        sectionvx=matrix(1,ntr,1,ns);
                        sectionvy=matrix(1,ntr,1,ns);
                        break;
                    case 2:
                        sectionvz=matrix(1,ntr,1,ns);
                        break;
                    case 3:
                        sectionvx=matrix(1,ntr,1,ns);
                        sectionvy=matrix(1,ntr,1,ns);
                        sectionvz=matrix(1,ntr,1,ns);
                        break;
                }
                break;
            case 2 : /* pressure only */
                sectionp=matrix(1,ntr,1,ns);
                sectionpnp1=matrix(1,ntr,1,ns);
                sectionpn=matrix(1,ntr,1,ns);
                break;
            case 3 : /* curl and div only */
                sectioncurl=matrix(1,ntr,1,ns);
                sectiondiv=matrix(1,ntr,1,ns);
                break;
            case 4 : /* everything */
                switch (WAVETYPE) {
                    case 1:
                        sectionvx=matrix(1,ntr,1,ns);
                        sectionvy=matrix(1,ntr,1,ns);
                        break;
                    case 2:
                        sectionvz=matrix(1,ntr,1,ns);
                        break;
                    case 3:
                        sectionvx=matrix(1,ntr,1,ns);
                        sectionvy=matrix(1,ntr,1,ns);
                        sectionvz=matrix(1,ntr,1,ns);
                        break;
                }
                sectioncurl=matrix(1,ntr,1,ns);
                sectiondiv=matrix(1,ntr,1,ns);
                sectionp=matrix(1,ntr,1,ns);
                break;
            case 5 : /* everything except curl and div*/
                switch (WAVETYPE) {
                    case 1:
                        sectionvx=matrix(1,ntr,1,ns);
                        sectionvy=matrix(1,ntr,1,ns);
                        break;
                    case 2:
                        sectionvz=matrix(1,ntr,1,ns);
                        break;
                    case 3:
                        sectionvx=matrix(1,ntr,1,ns);
                        sectionvy=matrix(1,ntr,1,ns);
                        sectionvz=matrix(1,ntr,1,ns);
                        break;
                }
                sectionp=matrix(1,ntr,1,ns);
                break;
        }
    }
    
    /* Memory for seismic data */
    sectionread=matrix(1,ntr_glob,1,ns);
    sectionpdata=matrix(1,ntr,1,ns);
    sectionpdiff=matrix(1,ntr,1,ns);
    sectionpdiffold=matrix(1,ntr,1,ns);
    switch (WAVETYPE) {
        case 1:
            sectionvxdata=matrix(1,ntr,1,ns);
            sectionvxdiff=matrix(1,ntr,1,ns);
            sectionvxdiffold=matrix(1,ntr,1,ns);
            sectionvydata=matrix(1,ntr,1,ns);
            sectionvydiff=matrix(1,ntr,1,ns);
            sectionvydiffold=matrix(1,ntr,1,ns);
            break;
            
        case 2:
            sectionvzdata=matrix(1,ntr,1,ns);
            sectionvzdiff=matrix(1,ntr,1,ns);
            sectionvzdiffold=matrix(1,ntr,1,ns);
            break;
            
        case 3:
            sectionvxdata=matrix(1,ntr,1,ns);
            sectionvxdiff=matrix(1,ntr,1,ns);
            sectionvxdiffold=matrix(1,ntr,1,ns);
            sectionvydata=matrix(1,ntr,1,ns);
            sectionvydiff=matrix(1,ntr,1,ns);
            sectionvydiffold=matrix(1,ntr,1,ns);
            sectionvzdata=matrix(1,ntr,1,ns);
            sectionvzdiff=matrix(1,ntr,1,ns);
            sectionvzdiffold=matrix(1,ntr,1,ns);
            break;
    }
    
    /* Memory for inversion for source time function */
    if((INV_STF==1)||(TIME_FILT==1) || (TIME_FILT==2)){
        sectionp_conv=matrix(1,ntr_glob,1,NT);
        sectionp_obs=matrix(1,ntr_glob,1,NT);
        source_time_function = vector(1,NT);
        switch (WAVETYPE) {
            case 1:
                sectionvy_conv=matrix(1,ntr_glob,1,NT);
                sectionvy_obs=matrix(1,ntr_glob,1,NT);
                sectionvx_conv=matrix(1,ntr_glob,1,NT);
                sectionvx_obs=matrix(1,ntr_glob,1,NT);
                break;
                
            case 2:
                sectionvz_conv=matrix(1,ntr_glob,1,NT);
                sectionvz_obs=matrix(1,ntr_glob,1,NT);
                break;
                
            case 3:
                sectionvy_conv=matrix(1,ntr_glob,1,NT);
                sectionvy_obs=matrix(1,ntr_glob,1,NT);
                sectionvx_conv=matrix(1,ntr_glob,1,NT);
                sectionvx_obs=matrix(1,ntr_glob,1,NT);
                sectionvz_conv=matrix(1,ntr_glob,1,NT);
                sectionvz_obs=matrix(1,ntr_glob,1,NT);
                break;
        }
    }
    
    /* memory for source position definition */
    srcpos1=fmatrix(1,8,1,1);
    
    /* memory of L2 norm */
    L2t = vector(1,4);
    epst1 = vector(1,3);
    epst2 = vector(1,3);
    epst3 = vector(1,3);
    picked_times = vector(1,ntr);
    
    fprintf(FP," ... memory allocation for PE %d was successfull.\n\n", MYID);
    
    
    /* Holberg coefficients for FD operators*/
    hc = holbergcoeff();
    
    MPI_Barrier(MPI_COMM_WORLD);
    
    /* Reading source positions from SOURCE_FILE */
    srcpos=sources(&nsrc);
    nsrc_glob=nsrc;
    
869
    if(FORWARD_ONLY==0&&USE_WORKFLOW){
870
        read_workflow(FILE_WORKFLOW,&workflow, &workflow_lines,workflow_header);
871 872 873
    }
    
    /* create model grids */
Florian Wittkamp's avatar
Florian Wittkamp committed
874
    if(L){
875
        if(!ACOUSTIC){
Florian Wittkamp's avatar
Florian Wittkamp committed
876 877 878 879
            if (READMOD){
                readmod(prho,ppi,pu,ptaus,ptaup,peta);
            }else{
                model(prho,ppi,pu,ptaus,ptaup,peta);
880 881
            }
        }else{
Florian Wittkamp's avatar
Florian Wittkamp committed
882 883 884 885 886 887 888 889 890 891 892 893 894 895 896 897 898 899
            if (READMOD){
                readmod_viscac(prho,ppi,ptaup,peta);
            }else{
                model_viscac(prho,ppi,ptaup,peta);
            }
        }
    }else{
        if(!ACOUSTIC){
            if (READMOD){
                readmod_elastic(prho,ppi,pu);
            }else{
                model_elastic(prho,ppi,pu);
            }
        }else{
            if (READMOD){
                readmod_acoustic(prho,ppi);
            }else{
                model_acoustic(prho,ppi);
900 901 902 903 904 905 906 907 908 909 910 911 912 913 914 915 916 917 918 919 920 921 922 923 924 925 926
            }
        }
    }
    
    /* check if the FD run will be stable and free of numerical dispersion */
    checkfd(FP, prho, ppi, pu, ptaus, ptaup, peta, hc, srcpos, nsrc, recpos, ntr_glob);
    
    /* calculate damping coefficients for CPMLs*/
    if(FW>0)
        PML_pro(d_x, K_x, alpha_prime_x, a_x, b_x, d_x_half, K_x_half, alpha_prime_x_half, a_x_half, b_x_half, d_y, K_y, alpha_prime_y, a_y, b_y, d_y_half, K_y_half, alpha_prime_y_half, a_y_half, b_y_half);
    
    MPI_Barrier(MPI_COMM_WORLD);
    
    /* comunication initialisation for persistent communication */
    /*comm_ini(bufferlef_to_rig, bufferrig_to_lef, buffertop_to_bot, bufferbot_to_top, req_send, req_rec);*/
    
    snapseis=1;
    snapseis1=1;
    SHOTINC=1;
    RECINC=1;
    
    switch(TIME_FILT){
        case 1: FC=FC_START; break;
            /*read frequencies from file*/
        case 2: FC_EXT=filter_frequencies(&nfrq); FC=FC_EXT[FREQ_NR]; break;
    }
    
927
    SOURCE_SHAPE_OLD = SOURCE_SHAPE;
928 929 930 931 932 933 934 935 936 937
    
    nt_out=10000;
    if(!VERBOSE) nt_out=1e5;
    /*------------------------------------------------------------------------------*/
    /*----------- start fullwaveform iteration loop --------------------------------*/
    /*------------------------------------------------------------------------------*/
    
    for(iter=1;iter<=ITERMAX;iter++){  /* fullwaveform iteration loop */
        
        // At each iteration the workflow is applied
938
        if(USE_WORKFLOW&&(FORWARD_ONLY==0)){
939
            
940
            apply_workflow(workflow,workflow_lines,workflow_header,&iter,&FC,wavetype_start,&change_wavetype_iter,&LBFGS_iter_start);
941 942 943
            
        }
        
944
        if(GRAD_METHOD==2&&(FORWARD_ONLY==0)){
945 946 947 948 949 950 951 952 953 954 955 956 957 958 959 960 961
            
            /* detect a change in inversion process and restart L-BFGS */
            if(iter==INV_RHO_ITER||iter==INV_VP_ITER||iter==INV_VS_ITER){
                LBFGS_iter_start=iter;
                
                if(WOLFE_CONDITION) {
                    /* Restart Step Length search */
                    alpha_SL_old=1;
                }
                
                /* set values */
                FWI_run=1;
                gradient_optimization=1;
            }
            
            /* restart L-BFGS */
            if(iter==LBFGS_iter_start) {
962
                lbfgs_reset(iter,N_LBFGS,LBFGS_NPAR,s_LBFGS,y_LBFGS,rho_LBFGS);
963 964 965 966 967 968 969 970 971 972 973
                
                /* set values */
                FWI_run=1;
                gradient_optimization=1;
            }
            
        }
        
        if (MYID==0){
            time2=MPI_Wtime();
            fprintf(FP,"\n\n\n ------------------------------------------------------------------\n");
974
            if(FORWARD_ONLY==0) {
975 976 977 978
                fprintf(FP,"\n\n\n                   TDFWI ITERATION %d \t of %d \n",iter,ITERMAX);
            } else {
                fprintf(FP,"\n\n\n                        FD-SIMULATION \n");
            }
979 980 981 982 983 984 985 986 987 988 989 990 991 992 993 994 995 996 997 998
            fprintf(FP,"\n\n\n ------------------------------------------------------------------\n");
        }
        
        countstep=0;
        
        if(GRAD_METHOD==1) {FWI_run=1; steplength_search=0; gradient_optimization=1;}
        
        /*-----------------------------------------------------*/
        /*  While loop for Wolfe step length search            */
        /*-----------------------------------------------------*/
        while(FWI_run || steplength_search || gradient_optimization) {
            
            /*-----------------------------------------------------*/
            /*              Calculate Misfit and gradient          */
            /*-----------------------------------------------------*/
            if(FWI_run){
                /* For the calculation of the material parameters between gridpoints
                 they have to be averaged. For this, values lying at 0 and NX+1,
                 for example, are required on the local grid. These are now copied from the
                 neighbouring grids */
Florian Wittkamp's avatar
Florian Wittkamp committed
999 1000 1001 1002 1003 1004
                if (L){
                    if(!ACOUSTIC){
                        matcopy(prho,ppi,pu,ptaus,ptaup);
                    } else {
                        matcopy_viscac(prho,ppi,ptaup);
                    }
1005 1006 1007 1008 1009 1010 1011 1012 1013 1014 1015 1016 1017 1018 1019 1020 1021 1022 1023 1024 1025
                }else{
                    if(!ACOUSTIC){
                        matcopy_elastic(prho, ppi, pu);
                    }else{
                        matcopy_acoustic(prho, ppi);
                    }
                }
                
                MPI_Barrier(MPI_COMM_WORLD);
                
                /* MPI split for processors with ntr>0 */
                int myid_ntr, group_id=0, groupsize;
                MPI_Comm	MPI_COMM_NTR;
                
                if (ntr) group_id = 1;
                else group_id = 0;
                MPI_Comm_split(MPI_COMM_WORLD, group_id, MYID, &MPI_COMM_NTR);
                MPI_Comm_rank(MPI_COMM_NTR, &myid_ntr);
                /* end of MPI split for processors with ntr>0 */
                
                
1026
                if(!ACOUSTIC) av_mue(pu,puipjp,prho);
1027
                av_rho(prho,prip,prjp);
1028
                if (!ACOUSTIC && L) av_tau(ptaus,ptausipjp);
1029 1030 1031
                
                
                /* Preparing memory variables for update_s (viscoelastic) */
Florian Wittkamp's avatar
Florian Wittkamp committed
1032 1033 1034 1035 1036 1037 1038
                if (L) {
                    if(!ACOUSTIC){
                        prepare_update_s(etajm,etaip,peta,fipjp,pu,puipjp,ppi,prho,ptaus,ptaup,ptausipjp,f,g,bip,bjm,cip,cjm,dip,d,e);
                    } else {
                        prepare_update_p(etajm,peta,ppi,prho,ptaup,g,bjm,cjm,e);
                    }
                }
1039
                
1040
                /* Do some initia calculations */
1041 1042
                if(iter==1){
                    
1043
                    /* Calculationg material parameters according to PARAMETERIZATION */
1044 1045
                    for (j=1;j<=NY;j=j+IDY){
                        for (i=1;i<=NX;i=i+IDX){
1046
                            
1047
                            if(PARAMETERIZATION==1){
1048 1049 1050 1051 1052 1053 1054
                                
                                Vp0[j][i] = ppi[j][i];
                                if(!ACOUSTIC) Vs0[j][i] = pu[j][i];
                                Rho0[j][i] = prho[j][i];}
                            
                            
                            
1055
                            if(PARAMETERIZATION==2){
1056 1057 1058 1059 1060 1061 1062
                                
                                Vp0[j][i] = sqrt((ppi[j][i]+2.0*pu[j][i])*prho[j][i]);
                                Vs0[j][i] = sqrt((pu[j][i])*prho[j][i]);
                                Rho0[j][i] = prho[j][i];
                                
                            }
                            
1063
                            if(PARAMETERIZATION==3){
1064 1065 1066 1067 1068 1069 1070 1071 1072 1073
                                
                                Vp0[j][i] = ppi[j][i];
                                Vs0[j][i] = pu[j][i];
                                Rho0[j][i] = prho[j][i];
                                
                            }
                            
                        }
                    }
                    
1074 1075 1076 1077 1078
                    /* Get average values from material parameters */
                    Vp_avg=average_matrix(ppi);
                    rho_avg=average_matrix(prho);
                    if(!ACOUSTIC) Vs_avg=average_matrix(pu);
        
1079 1080
                    if(!ACOUSTIC) if(VERBOSE) printf("MYID = %d \t Vp_avg = %e \t Vs_avg = %e \t rho_avg = %e \n ",MYID,Vp_avg,Vs_avg,rho_avg);
                    else if(VERBOSE) printf("MYID = %d \t Vp_avg = %e \t rho_avg = %e \n ",MYID,Vp_avg,rho_avg);
1081

1082 1083 1084 1085 1086 1087
                    C_vp = Vp_avg*Vp_avg;
                    if(!ACOUSTIC) C_vs = Vs_avg*Vs_avg;
                    C_rho = rho_avg*rho_avg;
                }
                
                /* Open Log File for L2 norm */
1088
                if(FORWARD_ONLY!=1){
1089
                    if(MYID==0){
Florian Wittkamp's avatar
Florian Wittkamp committed
1090 1091
                        if(iter==1){
                            FPL2=fopen(MISFIT_LOG_FILE,"w");
Florian Wittkamp's avatar
Florian Wittkamp committed
1092
                            /* Write header for misfit log file */
1093
                            if(GRAD_METHOD==1&&VERBOSE) {
Florian Wittkamp's avatar
Florian Wittkamp committed
1094 1095 1096 1097 1098 1099
                                if (TIME_FILT==0){
                                    fprintf(FPL2,"opteps_vp \t epst1[1] \t epst1[2] \t epst1[3] \t L2t[1] \t L2t[2] \t L2t[3] \t L2t[4] \n");}
                                else{
                                    fprintf(FPL2,"opteps_vp \t epst1[1] \t epst1[2] \t epst1[3] \t L2t[1] \t L2t[2] \t L2t[3] \t L2t[4] \t FC \n");
                                }
                            }
Florian Wittkamp's avatar
Florian Wittkamp committed
1100
                        }
1101 1102 1103 1104 1105 1106 1107 1108 1109 1110 1111 1112 1113
                        if(iter>1){FPL2=fopen(MISFIT_LOG_FILE,"a");}
                    }
                }
                
                /* initialization of L2 calculation */
                L2=0.0;
                Lcount=0;
                energy=0.0;
                L2_all_shots=0.0;
                energy_all_shots=0.0;
                killed_traces=0;
                killed_traces_testshots=0;
                
Florian Wittkamp's avatar
Florian Wittkamp committed
1114 1115 1116 1117 1118 1119
                if(WAVETYPE==2||WAVETYPE==3){
                    L2_SH=0.0;
                    energy_SH=0.0;
                    L2_all_shots_SH=0.0;
                    energy_all_shots_SH=0.0;
                }
1120 1121 1122 1123 1124 1125
                
                EPSILON=0.0;  /* test step length */
                exchange_par();
                
                /* initialize waveconv matrix*/
                if(WAVETYPE==1||WAVETYPE==3){
1126
                    if(FORWARD_ONLY==0){
1127
                        for (j=1;j<=NY;j=j+IDY){
1128
                            for (i=1;i<=NX;i=i+IDX){
1129
                                waveconv[j][i]=0.0;
1130
                                waveconv_rho[j][i]=0.0;
1131
                                if(!ACOUSTIC) waveconv_u[j][i]=0.0;
1132 1133 1134 1135 1136 1137
                            }
                        }
                    }
                }
                /* initialize waveconv matrix*/
                if(WAVETYPE==2||WAVETYPE==3){
1138
                    if(FORWARD_ONLY==0){
1139 1140
                        for (j=1;j<=NY;j=j+IDY){
                            for (i=1;i<=NX;i=i+IDX){
1141 1142 1143 1144 1145 1146 1147 1148 1149
                                waveconv_rho_z[j][i]=0.0;
                                waveconv_u_z[j][i]=0.0;
                                
                            }
                        }
                    }
                }
                
                if((EPRECOND>0)&&(EPRECOND_ITER==iter||(EPRECOND_ITER==0))){
1150 1151
                    for (j=1;j<=NY;j=j+IDY){
                        for (i=1;i<=NX;i=i+IDX){
1152 1153 1154 1155 1156 1157 1158 1159 1160 1161 1162 1163 1164 1165 1166 1167 1168 1169 1170
                            if(WAVETYPE==1||WAVETYPE==3) We_sum[j][i]=0.0;
                            if(WAVETYPE==2||WAVETYPE==3) We_sum_SH[j][i]=0.0;
                        }
                    }
                }
                
                
                
                itestshot=TESTSHOT_START;
                swstestshot=0;
                
                if(INVTYPE==2){
                    if (RUN_MULTIPLE_SHOTS) nshots=nsrc; else nshots=1;
                    
                    /*------------------------------------------------------------------------------*/
                    /*----------- Start of loop over shots -----------------------------------------*/
                    /*------------------------------------------------------------------------------*/
                    
                    for (ishot=1;ishot<=nshots;ishot+=SHOTINC){
Florian Wittkamp's avatar
Florian Wittkamp committed
1171

1172
                        SOURCE_SHAPE = SOURCE_SHAPE_OLD;
Florian Wittkamp's avatar
Florian Wittkamp committed
1173

1174 1175 1176 1177
                        /*------------------------------------------------------------------------------*/
                        /*----------- Start of inversion of source time function -----------------------*/
                        /*------------------------------------------------------------------------------*/
                        
Florian Wittkamp's avatar
Florian Wittkamp committed
1178 1179 1180 1181 1182
                        /* Do not Excute STF if this is a step length search run for Wolfe condition
                         * Therefore (gradient_optimization==1) is added.
                         */
                        
                        if(((INV_STF==1)&&((iter==1)||(s==1))) && (gradient_optimization==1)){
1183 1184 1185 1186 1187 1188 1189 1190 1191 1192 1193 1194 1195 1196 1197 1198
                            fprintf(FP,"\n==================================================================================\n");
                            fprintf(FP,"\n MYID=%d *****  Forward simulation for inversion of source time function ******** \n",MYID);
                            fprintf(FP,"\n MYID=%d * Starting simulation (forward model) for shot %d of %d. Iteration %d ** \n",MYID,ishot,nshots,iter);
                            fprintf(FP,"\n==================================================================================\n\n");
                            
                            for (nt=1;nt<=8;nt++) srcpos1[nt][1]=srcpos[nt][ishot];
                            
                            if (RUN_MULTIPLE_SHOTS){
                                /* find this single source positions on subdomains */
                                if (nsrc_loc>0) free_matrix(srcpos_loc,1,8,1,1);
                                srcpos_loc=splitsrc(srcpos1,&nsrc_loc, 1);
                            }else{
                                /* Distribute multiple source positions on subdomains */
                                srcpos_loc = splitsrc(srcpos,&nsrc_loc, nsrc);
                            }
                            
1199
                            if((SOURCE_SHAPE==7)||(SOURCE_SHAPE==3))err("SOURCE_SHAPE==7 or SOURCE_SHAPE==3 isn't possible with INV_STF==1");
1200
                            MPI_Barrier(MPI_COMM_WORLD);
Florian Wittkamp's avatar
Florian Wittkamp committed
1201 1202 1203 1204 1205 1206 1207 1208 1209 1210 1211 1212 1213 1214 1215
                            
                            
                            /*-------------------*/
                            /* calculate wavelet */
                            /*-------------------*/
                            /* calculate wavelet for each source point P SV */
                            if(WAVETYPE==1||WAVETYPE==3){
                                signals=NULL;
                                signals=wavelet(srcpos_loc,nsrc_loc,ishot,0);
                            }
                            /* calculate wavelet for each source point SH */
                            if(WAVETYPE==2||WAVETYPE==3){
                                signals_SH=NULL;
                                signals_SH=wavelet(srcpos_loc,nsrc_loc,ishot,1);
                            }
Florian Wittkamp's avatar
Florian Wittkamp committed
1216
                            
1217 1218 1219
                            
                            /* initialize wavefield with zero */
                            if (L){
Florian Wittkamp's avatar
Florian Wittkamp committed
1220 1221 1222 1223 1224
                                if(!ACOUSTIC) {
                                    zero_fdveps_visc(-nd+1,NY+nd,-nd+1,NX+nd,pvx,pvy,pvz,psxx,psyy,psxy,psxz,psyz,ux,uy,uxy,pvxp1,pvyp1,psi_sxx_x,psi_sxy_x,psi_sxz_x,psi_vxx,psi_vyx,psi_vzx,psi_syy_y,psi_sxy_y,psi_syz_y,psi_vyy,psi_vxy,psi_vzy,psi_vxxs,pr,pp,pq,pt,po);
                                } else {
                                    zero_fdveps_viscac(-nd+1, NY+nd, -nd+1, NX+nd, pvx, pvy, psp, pvxp1, pvyp1, psi_sxx_x, psi_sxy_x, psi_vxx, psi_vyx, psi_syy_y, psi_sxy_y, psi_vyy, psi_vxy, psi_vxxs, pp);
                                }
1225 1226 1227 1228 1229 1230 1231
                            }else{
                                if(!ACOUSTIC)
                                    zero_fdveps(-nd+1,NY+nd,-nd+1,NX+nd,pvx,pvy,pvz,psxx,psyy,psxy,psxz,psyz,ux,uy,uxy,pvxp1,pvyp1,psi_sxx_x,psi_sxy_x,psi_sxz_x,psi_vxx,psi_vyx,psi_vzx,psi_syy_y,psi_sxy_y,psi_syz_y,psi_vyy,psi_vxy,psi_vzy,psi_vxxs);
                                else
                                    zero_fdveps_ac(-nd+1,NY+nd,-nd+1,NX+nd,pvx,pvy,psp,pvxp1,pvyp1,psi_sxx_x,psi_sxy_x,psi_vxx,psi_vyx,psi_syy_y,psi_sxy_y,psi_vyy,psi_vxy,psi_vxxs);
                            }
                            
Florian Wittkamp's avatar
Florian Wittkamp committed
1232
                            if((!VERBOSE)&&(MYID==0)) fprintf(FP,"\n ****************************************\n ");
1233
                            
Florian Wittkamp's avatar
Florian Wittkamp committed
1234 1235 1236
                            /*------------------------------------------------------------------------------*/
                            /*----------------------  start loop over timesteps ( STF ) --------------------*/
                            /*------------------------------------------------------------------------------*/
1237 1238 1239 1240 1241 1242 1243 1244 1245 1246 1247 1248 1249 1250 1251 1252
                            
                            lsnap=iround(TSNAP1/DT);
                            lsamp=NDT;
                            nsnap=0;
                            
                            hin=1;
                            hin1=1;
                            
                            imat=1;
                            imat1=1;
                            imat2=1;
                            hi=1;
                            
                            for (nt=1;nt<=NT;nt++){
                                
                                infoout = !(nt%nt_out);
Florian Wittkamp's avatar
Florian Wittkamp committed
1253
                                if((!VERBOSE)&&(MYID==0)) if(!(nt%(NT/40))) fprintf(FP,"*");
1254
                                
Florian Wittkamp's avatar
Florian Wittkamp committed
1255 1256 1257 1258 1259 1260 1261 1262 1263 1264 1265 1266 1267 1268 1269
                                /* Check if simulation is still stable P and SV */
                                if (WAVETYPE==1 || WAVETYPE==3) {
                                    if (isnan(pvy[NY/2][NX/2])) {
                                        fprintf(FP,"\n Time step: %d; pvy: %f \n",nt,pvy[NY/2][NX/2]);
                                        err(" Simulation is unstable !");
                                    }
                                }
                                
                                /* Check if simulation is still stable SH */
                                if (WAVETYPE==2 || WAVETYPE==3) {
                                    if (isnan(pvz[NY/2][NX/2])) {
                                        fprintf(FP,"\n Time step: %d; pvy: %f \n",nt,pvy[NY/2][NX/2]);
                                        err(" Simulation is unstable !");
                                    }
                                }
1270 1271 1272 1273 1274 1275
                                
                                if (MYID==0){
                                    if (infoout)  fprintf(FP,"\n Computing timestep %d of %d \n",nt,NT);
                                    time3=MPI_Wtime();
                                }
                                
Florian Wittkamp's avatar
Florian Wittkamp committed
1276 1277 1278 1279 1280 1281 1282 1283 1284 1285
                                /* update of particle velocities */
                                if(!ACOUSTIC) {
                                    if (WAVETYPE==1 || WAVETYPE==3) {
                                        update_v_PML(1, NX, 1, NY, nt, pvx, pvxp1, pvxm1, pvy, pvyp1, pvym1, uttx, utty, psxx, psyy, psxy, prip, prjp, srcpos_loc,signals,signals,nsrc_loc,absorb_coeff,hc,infoout,0, K_x, a_x, b_x, K_x_half, a_x_half, b_x_half, K_y, a_y, b_y, K_y_half, a_y_half, b_y_half, psi_sxx_x, psi_syy_y, psi_sxy_y, psi_sxy_x);
                                    }
                                    
                                    if (WAVETYPE==2 || WAVETYPE==3) {
                                        update_v_PML_SH(1, NX, 1, NY, nt, pvz, pvzp1, pvzm1, psxz, psyz,prjp, srcpos_loc, signals, signals_SH, nsrc_loc, absorb_coeff,hc,infoout,0, K_x, a_x, b_x, K_x_half, a_x_half, b_x_half, K_y, a_y, b_y, K_y_half, a_y_half, b_y_half, psi_sxz_x, psi_syz_y);
                                    }
                                } else {
1286
                                    update_v_acoustic_PML(1, NX, 1, NY, nt, pvx, pvxp1, pvxm1, pvy, pvyp1, pvym1, psp, prip, prjp, srcpos_loc,signals,signals,nsrc_loc,absorb_coeff,hc,infoout,0, K_x_half, a_x_half, b_x_half, K_y_half, a_y_half, b_y_half, psi_sxx_x, psi_syy_y);
Florian Wittkamp's avatar
Florian Wittkamp committed
1287 1288
                                }

1289 1290 1291 1292 1293 1294 1295 1296 1297 1298 1299 1300 1301 1302 1303 1304 1305
                                
                                if (MYID==0){
                                    time4=MPI_Wtime();
                                    time_av_v_update+=(time4-time3);
                                    if (infoout)  fprintf(FP," particle velocity exchange between PEs ...");
                                }
                                
                                /* exchange of particle velocities between PEs */
                                exchange_v(pvx,pvy,pvz, bufferlef_to_rig, bufferrig_to_lef, buffertop_to_bot, bufferbot_to_top, req_send, req_rec,wavetype_start);
                                
                                if (MYID==0){
                                    time5=MPI_Wtime();
                                    time_av_v_exchange+=(time5-time4);
                                    if (infoout)  fprintf(FP," finished (real time: %4.2f s).\n",time5-time4);
                                }
                                
                                if (L) {   /* viscoelastic */
Florian Wittkamp's avatar
Florian Wittkamp committed
1306 1307 1308 1309 1310 1311 1312 1313 1314 1315 1316 1317 1318 1319 1320 1321 1322 1323 1324 1325
                                    if (WAVETYPE==1 || WAVETYPE==3) {
                                        if(!ACOUSTIC) {
                                            update_s_visc_PML(1, NX, 1, NY, pvx, pvy, ux, uy, uxy, uyx, psxx, psyy, psxy, ppi, pu, puipjp, prho, hc, infoout, pr, pp, pq, fipjp, f, g, bip, bjm, cip, cjm, d, e, dip, K_x, a_x, b_x, K_x_half, a_x_half, b_x_half, K_y, a_y, b_y, K_y_half, a_y_half, b_y_half, psi_vxx, psi_vyy, psi_vxy, psi_vyx);
                                        }else{
                                            update_p_visc_PML(1, NX, 1, NY, pvx, pvy, psp, ppi, prho, hc, infoout, pp, g, bjm, cjm, e, K_x, a_x, b_x, K_x_half, a_x_half, b_x_half, K_y, a_y, b_y, K_y_half, a_y_half, b_y_half, psi_vxx, psi_vyy, psi_vxy, psi_vyx);
                                        }
                                    }
                                    if (WAVETYPE==2 || WAVETYPE==3) {
                                        update_s_visc_PML_SH(1, NX, 1, NY, pvz, psxz, psyz, pt, po, bip, bjm, cip, cjm, d, dip,fipjp, f, hc,infoout, K_x, a_x, b_x, K_x_half, a_x_half, b_x_half, K_y, a_y, b_y, K_y_half, a_y_half, b_y_half,psi_vzx, psi_vzy);
                                    }
                                } else {   /* elastic */
                                    if (WAVETYPE==1 || WAVETYPE==3) {
                                        if(!ACOUSTIC) {
                                            update_s_elastic_PML(1, NX, 1, NY, pvx, pvy, ux, uy, uxy, uyx, psxx, psyy, psxy, ppi, pu, puipjp, absorb_coeff, prho, hc, infoout, K_x, a_x, b_x, K_x_half, a_x_half, b_x_half, K_y, a_y, b_y, K_y_half, a_y_half, b_y_half, psi_vxx, psi_vyy, psi_vxy, psi_vyx);
                                        } else {
                                            update_p_PML(1, NX, 1, NY, pvx, pvy, psp, ppi, absorb_coeff, prho, hc, infoout, K_x, a_x, b_x, K_x_half, a_x_half, b_x_half, K_y, a_y, b_y, K_y_half, a_y_half, b_y_half, psi_vxx, psi_vyy, psi_vxy, psi_vyx);
                                        }
                                    }
                                    if (WAVETYPE==2 || WAVETYPE==3) {
                                        update_s_elastic_PML_SH(1, NX, 1, NY, pvz,psxz,psyz,uxz,uyz,hc,infoout, K_x, a_x, b_x, K_x_half, a_x_half, b_x_half, K_y, a_y, b_y, K_y_half, a_y_half, b_y_half,psi_vzx, psi_vzy,puipjp,pu,prho);
Florian Wittkamp's avatar
Florian Wittkamp committed
1326
                                    }
1327 1328 1329
                                }
                                
                                /* explosive source */
1330
                                if ((SOURCE_TYPE==1))
1331 1332
                                    psource(nt,psxx,psyy,psp,srcpos_loc,signals,nsrc_loc,0);
                                
Florian Wittkamp's avatar
Florian Wittkamp committed
1333

1334
                                /* Applying free surface condition */
Florian Wittkamp's avatar
Florian Wittkamp committed
1335 1336
                                if ((FREE_SURF) && (POS[2]==0)){
                                    if (!ACOUSTIC){
1337 1338
                                        if (L){
                                            /* viscoelastic */
1339
                                            surface_PML(1, pvx, pvy, psxx, psyy, psxy,psyz, pp, pq, ppi, pu, prho, ptaup, ptaus, etajm, peta, hc, K_x, a_x, b_x, psi_vxxs, ux, uy,uxy,uyz,psxz,uxz);
1340 1341
                                        }else{
                                            /* elastic */
1342
                                            surface_elastic_PML(1, pvx, pvy, psxx, psyy, psxy,psyz, ppi, pu, prho, hc, K_x, a_x, b_x, psi_vxxs, ux, uy, uxy,uyz,psxz,uxz);
Florian Wittkamp's avatar
Florian Wittkamp committed
1343
                                        }
1344 1345
                                    } else {
                                        /* viscoelastic and elastic ACOUSTIC */
Florian Wittkamp's avatar
Florian Wittkamp committed
1346
                                        surface_acoustic_PML(1, psp);
1347 1348 1349 1350 1351 1352 1353 1354 1355 1356 1357 1358 1359 1360 1361 1362 1363 1364 1365 1366 1367 1368 1369 1370 1371 1372 1373 1374 1375 1376 1377 1378 1379 1380
                                    }
                                }
                                
                                if (MYID==0){
                                    time6=MPI_Wtime();
                                    time_av_s_update+=(time6-time5);
                                    if (infoout)  fprintf(FP," stress exchange between PEs ...");
                                }
                                
                                
                                /* stress exchange between PEs */
                                if(!ACOUSTIC)
                                    exchange_s(psxx,psyy,psxy,psxz,psyz,bufferlef_to_rig, bufferrig_to_lef,buffertop_to_bot, bufferbot_to_top,req_send, req_rec,wavetype_start);
                                else
                                    exchange_p(psp,bufferlef_to_rig, bufferrig_to_lef,buffertop_to_bot, bufferbot_to_top,req_send, req_rec);
                                
                                if (MYID==0){
                                    time7=MPI_Wtime();
                                    time_av_s_exchange+=(time7-time6);
                                    if (infoout)  fprintf(FP," finished (real time: %4.2f s).\n",time7-time6);
                                }
                                
                                /* store amplitudes at receivers in section-arrays */
                                if (SEISMO){
                                    seismo_ssg(nt, ntr, recpos_loc, sectionvx, sectionvy,sectionvz,sectionp, sectioncurl, sectiondiv,pvx, pvy,pvz, psxx, psyy, psp, ppi, pu, hc);
                                    /*lsamp+=NDT;*/
                                }
                                
                                if (MYID==0){
                                    time8=MPI_Wtime();
                                    time_av_timestep+=(time8-time3);
                                    if (infoout)  fprintf(FP," total real time for timestep %d : %4.2f s.\n",nt,time8-time3);
                                }
                                
Florian Wittkamp's avatar
Florian Wittkamp committed
1381 1382 1383 1384 1385 1386 1387
                            }
                            
                            /*------------------------------------------------------------------------------*/
                            /*--------------------  End  of loop over timesteps (   STF   ) ----------------*/
                            /*------------------------------------------------------------------------------*/
                            
                            if((!VERBOSE)&&(MYID==0)) fprintf(FP,"\n");
1388
                            
Florian Wittkamp's avatar
Florian Wittkamp committed
1389
                            // Exchange measured seismogramms and save it to file
1390 1391
                            switch (SEISMO){
                                case 1 : 	/* particle velocities only */
Florian Wittkamp's avatar
Florian Wittkamp committed
1392 1393 1394 1395 1396
                                    if (WAVETYPE==1 || WAVETYPE==3) {
                                        catseis(sectionvx, fulldata_vx, recswitch, ntr_glob, MPI_COMM_WORLD);
                                        catseis(sectionvy, fulldata_vy, recswitch, ntr_glob, MPI_COMM_WORLD);
                                    }
                                    if (WAVETYPE==2 || WAVETYPE==3) {
1397 1398
                                        catseis(sectionvz, fulldata_vz, recswitch, ntr_glob, MPI_COMM_WORLD);
                                    }
Florian Wittkamp's avatar
Florian Wittkamp committed
1399 1400 1401
                                    if(LNORM==8){
                                        calc_envelope(fulldata_vy,fulldata_vy,ns,ntr_glob);
                                        calc_envelope(fulldata_vx,fulldata_vx,ns,ntr_glob);}
1402
                                    if (MYID==0){
Florian Wittkamp's avatar
Florian Wittkamp committed
1403
                                        saveseis_glob(FP,fulldata_vx,fulldata_vy,fulldata_vz,fulldata_p,fulldata_curl,fulldata_div,recpos,recpos_loc,ntr_glob,srcpos,ishot,ns,iter,1);}
1404 1405 1406 1407
                                    break;
                                    
                                case 2 :	/* pressure only */
                                    catseis(sectionp, fulldata_p, recswitch, ntr_glob, MPI_COMM_WORLD);
Florian Wittkamp's avatar
Florian Wittkamp committed
1408
                                    if (MYID==0) saveseis_glob(FP,fulldata_vx,fulldata_vy,fulldata_vz,fulldata_p,fulldata_curl,fulldata_div,recpos,recpos_loc,ntr_glob,srcpos,ishot,ns,iter,1);
1409 1410 1411 1412 1413
                                    break;
                                    
                                case 3 : 	/* curl and div only */
                                    catseis(sectiondiv, fulldata_div, recswitch, ntr_glob, MPI_COMM_WORLD);
                                    catseis(sectioncurl, fulldata_curl, recswitch, ntr_glob, MPI_COMM_WORLD);
Florian Wittkamp's avatar
Florian Wittkamp committed
1414
                                    if (MYID==0) saveseis_glob(FP,fulldata_vx,fulldata_vy,fulldata_vz,fulldata_p,fulldata_curl,fulldata_div,recpos,recpos_loc,ntr_glob,srcpos,ishot,ns,iter,1);
1415 1416 1417
                                    break;
                                    
                                case 4 :	/* everything */
Florian Wittkamp's avatar
Florian Wittkamp committed
1418 1419 1420 1421 1422
                                    if (WAVETYPE==1 || WAVETYPE==3) {
                                        catseis(sectionvx, fulldata_vx, recswitch, ntr_glob, MPI_COMM_WORLD);
                                        catseis(sectionvy, fulldata_vy, recswitch, ntr_glob, MPI_COMM_WORLD);
                                    }
                                    if (WAVETYPE==2 || WAVETYPE==3) {
1423 1424
                                        catseis(sectionvz, fulldata_vz, recswitch, ntr_glob, MPI_COMM_WORLD);
                                    }
Florian Wittkamp's avatar
Florian Wittkamp committed
1425
                                    catseis(sectionp, fulldata_p, recswitch, ntr_glob, MPI_COMM_WORLD);
1426 1427
                                    catseis(sectiondiv, fulldata_div, recswitch, ntr_glob, MPI_COMM_WORLD);
                                    catseis(sectioncurl, fulldata_curl, recswitch, ntr_glob, MPI_COMM_WORLD);
Florian Wittkamp's avatar
Florian Wittkamp committed
1428
                                    if (MYID==0) saveseis_glob(FP,fulldata_vx,fulldata_vy,fulldata_vz,fulldata_p,fulldata_curl,fulldata_div,recpos,recpos_loc,ntr_glob,srcpos,ishot,ns,iter,1);
Florian Wittkamp's avatar