IFOS2D.c 243 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

/* ----------------------------------------------------------------------
20
 * This is program IFOS Version 2.0.1
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
    /* variables in main */
35
    int ns, nseismograms=0, nt, nd, fdo3, j, i, iter, h, infoout, SHOTINC,  hin, hin1, do_stf=0;
Florian Wittkamp's avatar
Florian Wittkamp committed
36
37
38
39
40
41
42
43
44
    int NTDTINV, nxny, nxnyi, imat, imat1, imat2, IDXI, IDYI, hi, NTST, NTSTI;
    int lsnap, nsnap=0, lsamp=0, buffsize,  swstestshot, snapseis, snapseis1;
    int ntr=0, ntr_loc=0, ntr_glob=0, nsrc=0, nsrc_loc=0, nsrc_glob=0, ishot, irec, nshots=0, nshots1, Lcount, itest, itestshot;
    
    float muss, lamss;
    float memdyn, memmodel, memseismograms, membuffer, memtotal, eps_scale;
    float fac1, fac2;
    float opteps_vp, opteps_vs, opteps_rho, Vp_avg, C_vp, Vs_avg, C_vs, rho_avg, C_rho;
    float memfwt, memfwt1, memfwtdata;
45
    char *buff_addr, ext[10], *fileinp;
Florian Wittkamp's avatar
Florian Wittkamp committed
46
    char jac[225];
47
48
49
50
51
    
    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;
    
Florian Wittkamp's avatar
Florian Wittkamp committed
52
    float L2, L2sum, L2_all_shots, L2sum_all_shots, *L2t, alphanom, alphadenom;
53
54
55
    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;
    
56
    float energy, energy_sum, energy_all_shots, energy_sum_all_shots = 0.0;
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
    
    // Pointer for dynamic wavefields:
Florian Wittkamp's avatar
Florian Wittkamp committed
61
    float  **  psxx, **  psxy, **  psyy, **  psxz, **  psyz, **psp, ** ux, ** uy, ** uxy, ** uyx, ** Vp0, ** uttx, ** utty, ** Vs0, ** Rho0;
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
    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;
Florian Wittkamp's avatar
Florian Wittkamp committed
77
    float  ** srcpos=NULL, **srcpos_loc=NULL, ** srcpos1=NULL, **srcpos_loc_back=NULL, ** signals=NULL,** signals_SH=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
    
    /* Variables for step length calculation */
    int step1, step2, step3=0, itests, iteste, stepmax, countstep;
    float scalefac;
    
    int RECINC, ntr1;
Florian Wittkamp's avatar
Florian Wittkamp committed
99
100
    int SOURCE_SHAPE_OLD=0;
    int SOURCE_SHAPE_OLD_SH=0;
101
102
    
    /* Variables for L-BFGS */
Florian Wittkamp's avatar
Florian Wittkamp committed
103
    int LBFGS_NPAR=3;
104
    int LBFGS_iter_start=1;
105
    float **s_LBFGS,**y_LBFGS, *rho_LBFGS;
106
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
    int l=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;
    
    /*vector for abort criterion*/
    float * L2_hist=NULL;
    
    /* help variable for MIN_ITER */
    int min_iter_help=0;
    
    float ** workflow=NULL;
    int workflow_lines;
145
    char workflow_header[STRING_SIZE];
146
147
    int change_wavetype_iter=-10; /* Have to be inialized negative */
    int wavetype_start; /* We need this due to MPI Comm */
148
149
    int buf1=0, buf2=0;
    WORKFLOW_STAGE=1;
150
151
    
    /* variable for time domain filtering */
152
153
    float F_LOW_PASS;
    float *F_LOW_PASS_EXT=NULL;
154
155
    int nfrq=0;
    int FREQ_NR=1;
Florian Wittkamp's avatar
Florian Wittkamp committed
156

157
    
Florian Wittkamp's avatar
Florian Wittkamp committed
158
    FILE *fprec, *FPL2;
159
    
160
161
162
    FILE *FPL2_JOINT;
    char L2_joint_log[STRING_SIZE];
    
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
    /* 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
190
            printf(" Cannot open IFOS input file %s \n",fileinp);
191
            printf("\n==================================================================\n\n");
Florian Wittkamp's avatar
Florian Wittkamp committed
192
            declare_error(" --- ");
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
        }
    }
    
    /* 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
213
    if ((MYID==0)) FP=stdout;
214
215
216
217
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
    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);
Florian Wittkamp's avatar
Florian Wittkamp committed
345
    if (!buff_addr) declare_error("allocation failure for buffer for MPI_Bsend !");
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
    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) {
382
        /* Allocate memory for L-BFGS */
383
        
384
        if(WAVETYPE==2) LBFGS_NPAR=2;
385
        
386
        s_LBFGS=fmatrix(1,N_LBFGS,1,LBFGS_NPAR*NX*NY);
387
        
388
        y_LBFGS=fmatrix(1,N_LBFGS,1,LBFGS_NPAR*NX*NY);
389
        
390
        rho_LBFGS=vector(1,N_LBFGS);
391
        
392
393
394
395
        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;
396
            }
397
            rho_LBFGS[l]=0.0;
398
399
400
401
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
        }
    }
    
    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 */
    
523
    if(FORWARD_ONLY==0){
524
525
526
527
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
        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){
566
567
568
569
            
            c1_SL=WOLFE_C1_SL;
            c2_SL=WOLFE_C2_SL;
            
570
            waveconv_old= matrix(-nd+1,NY+nd,-nd+1,NX+nd);
Florian Wittkamp's avatar
Florian Wittkamp committed
571
            if(!ACOUSTIC) waveconv_u_old= matrix(-nd+1,NY+nd,-nd+1,NX+nd);
572
573
574
            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
575
            if(!ACOUSTIC) waveconv_u_up= matrix(-nd+1,NY+nd,-nd+1,NX+nd);
576
577
578
579
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
            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;
    
865
    if(FORWARD_ONLY==0&&USE_WORKFLOW){
866
        read_workflow(FILE_WORKFLOW,&workflow, &workflow_lines,workflow_header);
867
868
869
    }
    
    /* create model grids */
Florian Wittkamp's avatar
Florian Wittkamp committed
870
    if(L){
871
        if(!ACOUSTIC){
Florian Wittkamp's avatar
Florian Wittkamp committed
872
873
874
875
            if (READMOD){
                readmod(prho,ppi,pu,ptaus,ptaup,peta);
            }else{
                model(prho,ppi,pu,ptaus,ptaup,peta);
876
877
            }
        }else{
Florian Wittkamp's avatar
Florian Wittkamp committed
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
            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);
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
            }
        }
    }
    
    /* 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);
    
    SHOTINC=1;
    RECINC=1;
    
    switch(TIME_FILT){
913
        case 1: F_LOW_PASS=F_LOW_PASS_START; break;
914
            /*read frequencies from file*/
915
        case 2: F_LOW_PASS_EXT=filter_frequencies(&nfrq); F_LOW_PASS=F_LOW_PASS_EXT[FREQ_NR]; break;
916
917
    }
    
Florian Wittkamp's avatar
Florian Wittkamp committed
918
    /* Save old SOURCE_SHAPE, which is needed for STF */
919
    SOURCE_SHAPE_OLD = SOURCE_SHAPE;
Florian Wittkamp's avatar
Florian Wittkamp committed
920
    if(WAVETYPE==2 || WAVETYPE==3) SOURCE_SHAPE_OLD_SH=SOURCE_SHAPE_SH;
921
922
923
924
925
926
927
928
929
930
    
    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
931
        if(USE_WORKFLOW&&(FORWARD_ONLY==0)){
932
            
933
            apply_workflow(workflow,workflow_lines,workflow_header,&iter,&F_LOW_PASS,wavetype_start,&change_wavetype_iter,&LBFGS_iter_start);
934
935
936
            
        }
        
937
        if(GRAD_METHOD==2&&(FORWARD_ONLY==0)){
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
            
            /* 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) {
955
                lbfgs_reset(iter,N_LBFGS,LBFGS_NPAR,s_LBFGS,y_LBFGS,rho_LBFGS);
956
957
958
959
960
961
962
963
964
965
966
                
                /* set values */
                FWI_run=1;
                gradient_optimization=1;
            }
            
        }
        
        if (MYID==0){
            time2=MPI_Wtime();
            fprintf(FP,"\n\n\n ------------------------------------------------------------------\n");
967
            if(FORWARD_ONLY==0) {
968
969
970
971
                fprintf(FP,"\n\n\n                   TDFWI ITERATION %d \t of %d \n",iter,ITERMAX);
            } else {
                fprintf(FP,"\n\n\n                        FD-SIMULATION \n");
            }
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
            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
992
993
994
995
996
997
                if (L){
                    if(!ACOUSTIC){
                        matcopy(prho,ppi,pu,ptaus,ptaup);
                    } else {
                        matcopy_viscac(prho,ppi,ptaup);
                    }
998
999
1000
1001
1002
1003
1004
1005
1006
1007
1008
1009
1010
1011
1012
1013
1014
1015
1016
1017
1018
                }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 */
                
                
1019
                if(!ACOUSTIC) av_mue(pu,puipjp,prho);
1020
                av_rho(prho,prip,prjp);
1021
                if (!ACOUSTIC && L) av_tau(ptaus,ptausipjp);
1022
1023
1024
                
                
                /* Preparing memory variables for update_s (viscoelastic) */
Florian Wittkamp's avatar
Florian Wittkamp committed
1025
1026
1027
1028
1029
1030
1031
                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);
                    }
                }
1032
                
1033
                /* Do some initia calculations */
1034
1035
                if(iter==1){
                    
1036
                    /* Calculationg material parameters according to PARAMETERIZATION */
1037
1038
                    for (j=1;j<=NY;j=j+IDY){
                        for (i=1;i<=NX;i=i+IDX){
1039
                            
1040
                            if(PARAMETERIZATION==1){
1041
1042
1043
1044
1045
1046
1047
                                
                                Vp0[j][i] = ppi[j][i];
                                if(!ACOUSTIC) Vs0[j][i] = pu[j][i];
                                Rho0[j][i] = prho[j][i];}
                            
                            
                            
1048
                            if(PARAMETERIZATION==2){
1049
1050
1051
1052
1053
1054
1055
                                
                                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];
                                
                            }
                            
1056
                            if(PARAMETERIZATION==3){
1057
1058
1059
1060
1061
1062
1063
1064
1065
1066
                                
                                Vp0[j][i] = ppi[j][i];
                                Vs0[j][i] = pu[j][i];
                                Rho0[j][i] = prho[j][i];
                                
                            }
                            
                        }
                    }
                    
1067
1068
1069
1070
1071
                    /* Get average values from material parameters */
                    Vp_avg=average_matrix(ppi);
                    rho_avg=average_matrix(prho);
                    if(!ACOUSTIC) Vs_avg=average_matrix(pu);
        
1072
1073
                    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);
1074

1075
1076
1077
1078
1079
                    C_vp = Vp_avg*Vp_avg;
                    if(!ACOUSTIC) C_vs = Vs_avg*Vs_avg;
                    C_rho = rho_avg*rho_avg;
                }
                
1080
1081
1082
1083
1084
1085
                
                /* Seperate PSV and SH logging in case of a joint inversion */
                if(WAVETYPE==3){
                    sprintf(L2_joint_log,"%s_JOINT",MISFIT_LOG_FILE);
                }
                
1086
                /* Open Log File for L2 norm */
1087
                if(FORWARD_ONLY!=1){
1088
                    if(MYID==0){
Florian Wittkamp's avatar
Florian Wittkamp committed
1089
1090
                        if(iter==1){
                            FPL2=fopen(MISFIT_LOG_FILE,"w");
1091
                            /* Write header for misfit log file */
1092
                            if(GRAD_METHOD==1&&VERBOSE) {
1093
1094
1095
                                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{
1096
                                    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 F_LOW_PASS \n");
1097
1098
                                }
                            }
1099
1100
1101
1102
1103
1104
1105
                            
                            if(WAVETYPE==3) FPL2_JOINT=fopen(L2_joint_log,"w");
                            
                        }
                        if(iter>1){
                            FPL2=fopen(MISFIT_LOG_FILE,"a");
                            if(WAVETYPE==3) FPL2_JOINT=fopen(L2_joint_log,"a");
Florian Wittkamp's avatar
Florian Wittkamp committed
1106
                        }
1107
1108
1109
1110
1111
1112
1113
1114
1115
1116
1117
1118
                    }
                }
                
                /* 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
1119
1120
1121
1122
1123
1124
                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;
                }
1125
1126
1127
1128
1129
1130
                
                EPSILON=0.0;  /* test step length */
                exchange_par();
                
                /* initialize waveconv matrix*/
                if(WAVETYPE==1||WAVETYPE==3){
1131
                    if(FORWARD_ONLY==0){
1132
                        for (j=1;j<=NY;j=j+IDY){
1133
                            for (i=1;i<=NX;i=i+IDX){
1134
                                waveconv[j][i]=0.0;
1135
                                waveconv_rho[j][i]=0.0;
1136
                                if(!ACOUSTIC) waveconv_u[j][i]=0.0;
1137
1138
1139
1140
1141
1142
                            }
                        }
                    }
                }
                /* initialize waveconv matrix*/
                if(WAVETYPE==2||WAVETYPE==3){
1143
                    if(FORWARD_ONLY==0){
1144
1145
                        for (j=1;j<=NY;j=j+IDY){
                            for (i=1;i<=NX;i=i+IDX){
1146
1147
1148
1149
1150
1151
1152
1153
1154
                                waveconv_rho_z[j][i]=0.0;
                                waveconv_u_z[j][i]=0.0;
                                
                            }
                        }
                    }
                }
                
                if((EPRECOND>0)&&(EPRECOND_ITER==iter||(EPRECOND_ITER==0))){
1155
1156
                    for (j=1;j<=NY;j=j+IDY){
                        for (i=1;i<=NX;i=i+IDX){
1157
1158
1159
1160
1161
1162
1163
1164
1165
1166
1167
1168
1169
1170
1171
1172
1173
1174
1175
                            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
1176

1177
                        SOURCE_SHAPE = SOURCE_SHAPE_OLD;
Florian Wittkamp's avatar
Florian Wittkamp committed
1178
1179
                        if(WAVETYPE==2 || WAVETYPE==3) SOURCE_SHAPE_SH=SOURCE_SHAPE_OLD_SH;
                        
1180
1181
1182
1183
                        /*------------------------------------------------------------------------------*/
                        /*----------- Start of inversion of source time function -----------------------*/
                        /*------------------------------------------------------------------------------*/
                        
Florian Wittkamp's avatar
Florian Wittkamp committed
1184
1185
1186
1187
                        /* Do not Excute STF if this is a step length search run for Wolfe condition
                         * Therefore (gradient_optimization==1) is added.
                         */
                        
1188
                        if(((INV_STF==1)&&( (iter==1) || (do_stf==1) )) && (gradient_optimization==1) ){
1189
1190
1191
1192
1193
1194
1195
1196
1197
1198
1199
1200
1201
1202
1203
1204
                            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);
                            }
                            
1205
                            if(SOURCE_SHAPE==3) declare_error("SOURCE_SHAPE==3 isn't possible with INV_STF==1");
1206
                            MPI_Barrier(MPI_COMM_WORLD);
Florian Wittkamp's avatar
Florian Wittkamp committed
1207
1208
1209
1210
1211
1212
1213
1214
                            
                            
                            /*-------------------*/
                            /* calculate wavelet */
                            /*-------------------*/
                            /* calculate wavelet for each source point P SV */
                            if(WAVETYPE==1||WAVETYPE==3){
                                signals=NULL;
1215
                                signals=wavelet(srcpos_loc,nsrc_loc,ishot,0,1);
Florian Wittkamp's avatar
Florian Wittkamp committed
1216
1217
1218
1219
                            }
                            /* calculate wavelet for each source point SH */
                            if(WAVETYPE==2||WAVETYPE==3){
                                signals_SH=NULL;
1220
                                signals_SH=wavelet(srcpos_loc,nsrc_loc,ishot,1,1);
Florian Wittkamp's avatar
Florian Wittkamp committed
1221
                            }
Florian Wittkamp's avatar
Florian Wittkamp committed
1222
                            
1223
1224
1225
                            
                            /* initialize wavefield with zero */
                            if (L){
Florian Wittkamp's avatar
Florian Wittkamp committed
1226
1227
1228
1229
1230
                                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);
                                }
1231
1232
1233
1234
1235
1236
1237
                            }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
1238
                            if((!VERBOSE)&&(MYID==0)) fprintf(FP,"\n ****************************************\n ");
1239
                            
Florian Wittkamp's avatar
Florian Wittkamp committed
1240
1241
1242
                            /*------------------------------------------------------------------------------*/
                            /*----------------------  start loop over timesteps ( STF ) --------------------*/
                            /*------------------------------------------------------------------------------*/
1243
1244
1245
1246
1247
1248
1249
1250
1251
1252
1253
1254
1255
1256
1257
1258
                            
                            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
1259
                                if((!VERBOSE)&&(MYID==0)) if(!(nt%(NT/40))) fprintf(FP,"*");
1260
                                
Florian Wittkamp's avatar
Florian Wittkamp committed
1261
1262
1263
1264
                                /* 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]);
Florian Wittkamp's avatar
Florian Wittkamp committed
1265
                                        declare_error(" Simulation is unstable !");
Florian Wittkamp's avatar
Florian Wittkamp committed
1266
1267
1268
1269
1270
1271
1272
                                    }
                                }
                                
                                /* 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]);
Florian Wittkamp's avatar
Florian Wittkamp committed
1273
                                        declare_error(" Simulation is unstable !");
Florian Wittkamp's avatar
Florian Wittkamp committed
1274
1275
                                    }
                                }
1276
1277
1278
1279
1280
1281
                                
                                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
1282
1283
1284
1285
1286
1287
1288
1289
1290
1291
                                /* 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 {
1292
                                    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
1293
1294
                                }

1295
1296
1297
1298
1299
1300
1301
1302
1303
1304
1305
1306
1307
1308
1309
1310
1311
                                
                                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
1312
1313
1314
1315
1316
1317
1318
1319
1320
1321
1322
1323
1324
1325
1326
1327
1328
1329
1330
1331
                                    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
1332
                                    }
1333
1334
1335
                                }
                                
                                /* explosive source */
1336
                                if ((SOURCE_TYPE==1))
1337
1338
                                    psource(nt,psxx,psyy,psp,srcpos_loc,signals,nsrc_loc,0);
                                
Florian Wittkamp's avatar
Florian Wittkamp committed
1339

1340
                                /* Applying free surface condition */
Florian Wittkamp's avatar
Florian Wittkamp committed
1341
1342
                                if ((FREE_SURF) && (POS[2]==0)){
                                    if (!ACOUSTIC){
1343
1344
                                        if (L){
                                            /* viscoelastic */
1345
                                            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);
1346
1347
                                        }else{
                                            /* elastic */
1348
                                            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
1349
                                        }
1350
1351
                                    } else {
                                        /* viscoelastic and elastic ACOUSTIC */
Florian Wittkamp's avatar
Florian Wittkamp committed
1352
                                        surface_acoustic_PML(1, psp);
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
1381
1382
1383
1384
1385
1386
                                    }
                                }
                                
                                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
1387
1388
1389
1390
1391
1392
1393
                            }
                            
                            /*------------------------------------------------------------------------------*/
                            /*--------------------  End  of loop over timesteps (   STF   ) ----------------*/
                            /*------------------------------------------------------------------------------*/
                            
                            if((!VERBOSE)&&(MYID==0)) fprintf(FP,"\n");
1394
                            
Florian Wittkamp's avatar
Florian Wittkamp committed
1395
                            // Exchange measured seismogramms and save it to file
1396
1397
                            switch (SEISMO){
                                case 1 : 	/* particle velocities only */
Florian Wittkamp's avatar
Florian Wittkamp committed
1398
1399
1400
1401
1402
                                    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) {
1403
1404
                                        catseis(sectionvz, fulldata_vz, recswitch, ntr_glob, MPI_COMM_WORLD);
                                    }
Florian Wittkamp's avatar
Florian Wittkamp committed
1405
1406
1407
                                    if(LNORM==8){
                                        calc_envelope(fulldata_vy,fulldata_vy,ns,ntr_glob);
                                        calc_envelope(fulldata_vx,fulldata_vx,ns,ntr_glob);}
1408
                                    if (MYID==0){
Florian Wittkamp's avatar
Florian Wittkamp committed
1409
                                        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);}
1410
1411
1412
1413
                                    break;
                                    
                                case 2 :	/* pressure only */
                                    catseis(sectionp, fulldata_p, 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
1418
1419
                                    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
1420
                                    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);
1421
1422
1423
                                    break;
                                    
                                case 4 :	/* everything */
Florian Wittkamp's avatar
Florian Wittkamp committed
1424
1425
1426
1427
1428
                                    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) {
1429
1430
                                        catseis(sectionvz, fulldata_vz, recswitch, ntr_glob, MPI_COMM_WORLD);
                                    }
Florian Wittkamp's avatar
Florian Wittkamp committed
1431
                                    catseis(sectionp, fulldata_p, recswitch, ntr_glob, MPI_COMM_WORLD);
1432
1433
                                    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
1434
                                    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);
1435
1436
1437
                                    break;
                                    
                                case 5 :	/* everything except curl and div*/
Florian Wittkamp's avatar
Florian Wittkamp committed
1438
1439
1440
1441
1442
                                    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) {
1443
1444
1445
                                        catseis(sectionvz, fulldata_vz, recswitch, ntr_glob, MPI_COMM_WORLD);
                                    }
                                    catseis(sectionp, fulldata_p, recswitch, ntr_glob, MPI_COMM_WORLD);
Florian Wittkamp's avatar
Florian Wittkamp committed
1446
                                    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);
1447
1448
1449
1450
                                    break;
                                    
                            } /* end of switch (SEISMO) */
                            
Florian Wittkamp's avatar
Florian Wittkamp committed
1451
1452
1453
                            /*------------------------------------------------------------------------------*/
                            /*----------- Start of inversion of source time function -----------------------*/
                            /*------------------------------------------------------------------------------*/
1454
1455
                            if((TIME_FILT==1) ||(TIME_FILT==2)){
                                
Florian Wittkamp's avatar
Florian Wittkamp committed
1456
                                if (!FORWARD_ONLY){
1457
                                    if((INV_STF==1)&&((iter==1)||(do_stf==1))){
1458
1459
1460
1461
                                        
                                        if (nsrc_loc>0){
                                            
                                            /*time domain filtering of the observed data sectionvy_obs */
Florian Wittkamp's avatar
Florian Wittkamp committed
1462
1463
1464
                                            if(WAVETYPE==1 || WAVETYPE==3){
                                                if ((ADJOINT_TYPE==1)|| (ADJOINT_TYPE==2)){
                                                    inseis(fprec,ishot,sectionvy_obs,ntr_glob,ns,2,iter);
1465
                                                    timedomain_filt(sectionvy_obs,F_LOW_PASS,ORDER,ntr_glob,ns,1);
Florian Wittkamp's avatar
Florian Wittkamp committed
1466
1467
1468
                                                }
                                                if (ADJOINT_TYPE==4){
                                                    inseis(fprec,ishot,sectionp_obs,ntr_glob,ns,9,iter);
1469
                                                    timedomain_filt(sectionp_obs,F_LOW_PASS,ORDER,ntr_glob,ns,1);
Florian Wittkamp's avatar
Florian Wittkamp committed
1470
                                                }
1471
                                            }