/[ascend]/trunk/pygtk/simulation.cpp
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Revision 669 - (show annotations) (download) (as text)
Wed Jun 21 07:00:45 2006 UTC (14 years, 4 months ago) by johnpye
File MIME type: text/x-c++src
File size: 19277 byte(s)
Merged changes from DAE branch (revisions 702 to 819) back into trunk.
This adds the Integration API to the ASCEND solver (in base/generic).
Also provides pre-alpha support for 'IDA' from the SUNDIALS suite, a DAE solver.
Many other minor code clean-ups, including adoption of new 'ASC_NEW' and friends (to replace 'ascmalloc')
Added some very sketchy stuff providing 'DIFF(...)' syntax, although it is anticipated that this will be removed.
1 /* ASCEND modelling environment
2 Copyright (C) 2006 Carnegie Mellon University
3
4 This program is free software; you can redistribute it and/or modify
5 it under the terms of the GNU General Public License as published by
6 the Free Software Foundation; either version 2, or (at your option)
7 any later version.
8
9 This program is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 GNU General Public License for more details.
13
14 You should have received a copy of the GNU General Public License
15 along with this program; if not, write to the Free Software
16 Foundation, Inc., 59 Temple Place - Suite 330,
17 Boston, MA 02111-1307, USA.
18 */
19 #include <iostream>
20 #include <iomanip>
21 #include <stdexcept>
22 #include <sstream>
23 using namespace std;
24
25 #include "config.h"
26
27 extern "C"{
28 #include <utilities/ascConfig.h>
29 #include <utilities/error.h>
30 #include <utilities/ascSignal.h>
31 #include <utilities/ascMalloc.h>
32 #include <general/dstring.h>
33 #include <general/tm_time.h>
34 #include <compiler/instance_enum.h>
35 #include <compiler/fractions.h>
36 #include <compiler/compiler.h>
37 #include <compiler/dimen.h>
38 #include <compiler/symtab.h>
39 #include <compiler/instance_io.h>
40 #include <compiler/instantiate.h>
41 #include <compiler/bintoken.h>
42 #include <compiler/instance_enum.h>
43 #include <compiler/instquery.h>
44 #include <compiler/check.h>
45 #include <compiler/name.h>
46 #include <compiler/pending.h>
47
48 #include <utilities/readln.h>
49 #include <solver/mtx.h>
50 #include <solver/slv_types.h>
51 #include <solver/var.h>
52 #include <solver/rel.h>
53 #include <solver/discrete.h>
54 #include <solver/conditional.h>
55 #include <solver/logrel.h>
56 #include <solver/bnd.h>
57 #include <solver/calc.h>
58 #include <solver/relman.h>
59 #include <solver/slv_common.h>
60 #include <solver/linsol.h>
61 #include <solver/linsolqr.h>
62 #include <solver/slv_client.h>
63 #include <solver/system.h>
64 #include <solver/slv_interface.h>
65 #include <solver/slvDOF.h>
66 #include <solver/slv3.h>
67 #include <solver/slv_stdcalls.h>
68 #include <solver/slv_server.h>
69 }
70
71 #include "simulation.h"
72 #include "solver.h"
73 #include "solverparameters.h"
74 #include "name.h"
75 #include "incidencematrix.h"
76 #include "variable.h"
77 #include "solverstatus.h"
78 #include "solverreporter.h"
79
80 /**
81 Create an instance of a type (call compiler etc)
82
83 @TODO fix mutex on compile command filenames
84 */
85 Simulation::Simulation(Instance *i, const SymChar &name) : Instanc(i, name), simroot(GetSimulationRoot(i),SymChar("simroot")){
86 is_built = false;
87 // Create an Instance object for the 'simulation root' (we'll call
88 // it the 'simulation model') and it can be fetched using 'getModel()'
89 // any time later.
90 //simroot = Instanc(GetSimulationRoot(i),name);
91 }
92
93 Simulation::Simulation(const Simulation &old) : Instanc(old), simroot(old.simroot){
94 is_built = old.is_built;
95 sys = old.sys;
96 bin_srcname = old.bin_srcname;
97 bin_objname = old.bin_objname;
98 bin_libname = old.bin_libname;
99 bin_cmd = old.bin_cmd;
100 bin_rm = old.bin_rm;
101 }
102
103 Simulation::~Simulation(){
104 //CONSOLE_DEBUG("Deleting simulation %s", getName().toString());
105 }
106
107 Instanc &
108 Simulation::getModel(){
109 if(!simroot.getInternalType()){
110 throw runtime_error("Simulation::getModel: simroot.getInternalType()is NULL");
111 }
112 return simroot;
113 }
114
115 void
116 Simulation::checkDoF() const{
117 cerr << "CHECKING DOF..." << endl;
118 int dof, status;
119 if(!sys){
120 throw runtime_error("System not yet built");
121 }
122 slvDOF_status(sys, &status, &dof);
123 switch(status){
124 case 1: ERROR_REPORTER_NOLINE(ASC_USER_ERROR,"Underspecified; %d degrees of freedom",dof); break;
125 case 2: ERROR_REPORTER_NOLINE(ASC_USER_NOTE,"Square"); break;
126 case 3: ERROR_REPORTER_NOLINE(ASC_USER_ERROR,"Structurally singular"); break;
127 case 4: ERROR_REPORTER_NOLINE(ASC_USER_ERROR,"Overspecified"); break;
128 case 5:
129 throw runtime_error("Unable to resolve degrees of freedom"); break;
130 default:
131 throw runtime_error("Invalid return status from slvDOF_status");
132 }
133 }
134
135 void
136 Simulation::checkConsistency() const{
137 cerr << "CHECKING CONSISTENCY..." << endl;
138 int *fixedarrayptr;
139
140 int res = consistency_analysis(sys, &fixedarrayptr);
141 struct var_variable **vp = slv_get_master_var_list(sys);
142
143 if(res==1){
144 cerr << "STRUCTURALLY CONSISTENT" << endl;
145 return;
146 }else{
147 ERROR_REPORTER_NOLINE(ASC_USER_ERROR,"Structurally inconsistent. Free the variables listed on the console\nin order to make system consistent.");
148 cerr << "INCONSISTENT: Free these vars:" << endl;
149 for(int i=0; fixedarrayptr[i]!=-1; ++i){
150 Instanc i1((struct Instance *)var_instance(vp[fixedarrayptr[i]]));
151 cerr << " " << getInstanceName(i1) << endl;
152 }
153 }
154 }
155
156 void
157 Simulation::checkStructuralSingularity() const{
158 cerr << "CHECKING STRUCTURAL SINGULARITY..." << endl;
159
160 int *vil;
161 int *ril;
162 int *fil;
163
164 int res = slvDOF_structsing(sys, mtx_FIRST, &vil, &ril, &fil);
165 struct var_variable **varlist = slv_get_solvers_var_list(sys);
166 struct rel_relation **rellist = slv_get_solvers_rel_list(sys);
167
168 if(res==0){
169 cerr << "UNABLE TO DETERMINE SINGULARITY LISTS" << endl;
170 return;
171 }else if(res==1){
172 ERROR_REPORTER_NOLINE(ASC_USER_ERROR,"Structurally singular. Check the listing on the console.");
173 cerr << "STRUCTURALLY SINGULAR: The found singularity involves these relations:" << endl;
174 for(int i=0; ril[i]!=-1; ++i){
175 Instanc i1((struct Instance *)rel_instance(rellist[ril[i]]));
176 cerr << " " << getInstanceName(i1) << endl;
177 }
178
179 cerr << "STRUCTURALLY SINGULAR: ... and these variables:" << endl;
180 for(int i=0; vil[i]!=-1; ++i){
181 Instanc i1((struct Instance *)var_instance(varlist[vil[i]]));
182 cerr << " " << getInstanceName(i1) << endl;
183 }
184
185 cerr << "STRUCTURALLY SINGULAR: ... and may be mitigated by freeing these variables:" << endl;
186 for(int i=0; fil[i]!=-1; ++i){
187 Instanc i1((struct Instance *)var_instance(varlist[fil[i]]));
188 cerr << " " << getInstanceName(i1) << endl;
189 }
190 }else{
191 throw runtime_error("Invalid return from slvDOF_structsing.");
192 }
193 ascfree(vil);
194 ascfree(ril);
195 ascfree(fil);
196 }
197
198 void
199 Simulation::run(const Method &method){
200 cerr << "RUNNING PROCEDURE " << method.getName() << endl;
201 Nam name = Nam(method.getSym());
202 //cerr << "CREATED NAME '" << name.getName() << "'" << endl;
203 Proc_enum pe;
204 pe = Initialize(
205 &*(getModel().getInternalType()) ,name.getInternalType(), "__not_named__"
206 ,ASCERR
207 ,0, NULL, NULL
208 );
209
210 if(pe == Proc_all_ok){
211 ERROR_REPORTER_NOLINE(ASC_PROG_NOTE,"Method '%s' was run (check above for errors)\n",method.getName());
212 //cerr << "METHOD " << method.getName() << " COMPLETED OK" << endl;
213 }else{
214 stringstream ss;
215 ss << "Simulation::run: Method '" << method.getName() << "' returned error: ";
216 switch(pe){
217 case Proc_CallOK: ss << "Call OK"; break;
218 case Proc_CallError: ss << "Error occurred in call"; break;
219 case Proc_CallReturn: ss << "Request that caller return (OK)"; break;
220 case Proc_CallBreak: ss << "Break out of enclosing loop"; break;
221 case Proc_CallContinue: ss << "Skip to next iteration"; break;
222
223 case Proc_break: ss << "Break"; break;
224 case Proc_continue: ss << "Continue"; break;
225 case Proc_fallthru: ss << "Fall-through"; break;
226 case Proc_return: ss << "Return"; break;
227 case Proc_stop: ss << "Stop"; break;
228 case Proc_stack_exceeded: ss << "Stack exceeded"; break;
229 case Proc_stack_exceeded_this_frame: ss << "Stack exceeded this frame"; break;
230 case Proc_case_matched: ss << "Case matched"; break;
231 case Proc_case_unmatched: ss << "Case unmatched"; break;
232
233 case Proc_case_undefined_value: ss << "Undefined value in case"; break;
234 case Proc_case_boolean_mismatch: ss << "Boolean mismatch in case"; break;
235 case Proc_case_integer_mismatch: ss << "Integer mismatch in case"; break;
236 case Proc_case_symbol_mismatch: ss << "Symbol mismatch in case"; break;
237 case Proc_case_wrong_index: ss << "Wrong index in case"; break;
238 case Proc_case_wrong_value: ss << "Wrong value in case"; break;
239 case Proc_case_extra_values: ss << "Extra values in case"; break;
240 case Proc_bad_statement: ss << "Bad statement"; break;
241 case Proc_bad_name: ss << "Bad name"; break;
242 case Proc_for_duplicate_index: ss << "Duplicate index"; break;
243 case Proc_for_set_err: ss << "For set error"; break;
244 case Proc_for_not_set: ss << "For not set"; break;
245 case Proc_illegal_name_use: ss << "Illegal name use"; break;
246 case Proc_name_not_found: ss << "Name not found"; break;
247 case Proc_instance_not_found: ss << "Instance not found"; break;
248 case Proc_type_not_found: ss << "Type not found"; break;
249 case Proc_illegal_type_use: ss << "Illegal use"; break;
250 case Proc_proc_not_found: ss << "Method not found"; break;
251 case Proc_if_expr_error_typeconflict: ss << "Type conflict in 'if' expression"; break;
252 case Proc_if_expr_error_nameunfound: ss << "Name not found in 'if' expression"; break;
253 case Proc_if_expr_error_incorrectname: ss << "Incorrect name in 'if' expression"; break;
254 case Proc_if_expr_error_undefinedvalue: ss << "Undefined value in 'if' expression"; break;
255 case Proc_if_expr_error_dimensionconflict: ss << "Dimension conflict in 'if' expression"; break;
256 case Proc_if_expr_error_emptychoice: ss << "Empty choice in 'if' expression"; break;
257 case Proc_if_expr_error_emptyintersection: ss << "Empty intersection in 'if' expression"; break;
258 case Proc_if_expr_error_confused: ss << "Confused in 'if' expression"; break;
259 case Proc_if_real_expr: ss << "Real-valued result in 'if' expression"; break;
260 case Proc_if_integer_expr: ss << "Integeter-valued result in 'if' expression"; break;
261 case Proc_if_symbol_expr: ss << "Symbol-valued result in 'if' expression"; break;
262 case Proc_if_set_expr: ss << "Set-valued result in 'if' expression"; break;
263 case Proc_if_not_logical: ss << "If expression is not logical"; break;
264 case Proc_user_interrupt: ss << "User interrupt"; break;
265 case Proc_infinite_loop: ss << "Infinite loop"; break;
266 case Proc_declarative_constant_assignment: ss << "Declarative constant assignment"; break;
267 case Proc_nonsense_assignment: ss << "Nonsense assginment (bogus)"; break;
268 case Proc_nonconsistent_assignment: ss << "Inconsistent assignment"; break;
269 case Proc_nonatom_assignment: ss << "Non-atom assignment"; break;
270 case Proc_nonboolean_assignment: ss << "Non-boolean assignment"; break;
271 case Proc_noninteger_assignment: ss << "Non-integer assignment"; break;
272 case Proc_nonreal_assignment: ss << "Non-real assignment"; break;
273 case Proc_nonsymbol_assignment: ss << "Non-symbol assignment"; break;
274 case Proc_lhs_error: ss << "Left-hand-side error"; break;
275 case Proc_rhs_error: ss << "Right-hand-side error"; break;
276 case Proc_unknown_error: ss << "Unknown error"; break;
277 default:
278 ss << "Invalid error code";
279 }
280
281
282 ss << " (" << int(pe) << ")";
283 throw runtime_error(ss.str());
284 }
285 }
286
287 const bool
288 Simulation::check(){
289 cerr << "CHECKING SIMULATION" << endl;
290 Instance *i1 = getModel().getInternalType();
291 CheckInstance(stderr, &*i1);
292 cerr << "...DONE CHECKING" << endl;
293 this->checkConsistency();
294 this->checkStructuralSingularity();
295 return true;
296 }
297
298 void
299 Simulation::build(){
300 cerr << "BUILDING SIMULATION..." << endl;
301 Instance *i1 = getModel().getInternalType();
302 sys = system_build(&*i1);
303 if(!sys){
304 throw runtime_error("Unable to build system");
305 }
306 is_built = true;
307 cerr << "...DONE BUILDING" << endl;
308 }
309
310 vector<Variable>
311 Simulation::getFixableVariables(){
312 cerr << "GETTING FIXABLE VARIABLES..." << endl;
313 vector<Variable> vars;
314
315 if(!sys){
316 throw runtime_error("Simulation system not yet built");
317 }
318
319 int32 *vip; /** TODO ensure 32 bit integers are used */
320
321 // Get IDs of elegible variables in array at vip...
322 if(!slvDOF_eligible(sys,&vip)){
323 ERROR_REPORTER_NOLINE(ASC_USER_NOTE,"No fixable variables found.");
324 }else{
325 //cerr << "FIXABLE VARS FOUND" << endl;
326 struct var_variable **vp = slv_get_solvers_var_list(sys);
327
328 /*struct var_variable *first_var = vp[0];
329 char *first_var_name = var_make_name(sys,first_var);
330 cerr << "FIRST SYS VAR IS NAMED " << var_make_name(s,first_var) << endl;
331 ascfree(first_var_name);*/
332
333 if(vp==NULL){
334 throw runtime_error("Simulation variable list is null");
335 }
336
337 // iterate through this list until we find a -1:
338 int i=0;
339 int var_index = vip[i];
340 while(var_index >= 0){
341 //cerr << "FOUND VARIABLE var_index = " << var_index << endl;
342 struct var_variable *var = vp[var_index];
343 //cerr << "VARIABLE " << var_index << " IS ELIGIBLE" << endl;
344
345 //char *var_name = var_make_name(sys,var);
346 //cerr << "ELIGIBLE VAR: " << var_name << endl;
347 //ascfree(var_name);
348
349 vars.push_back( Variable(this, var) );
350 ++i;
351 var_index = vip[i];
352 }
353 ERROR_REPORTER_NOLINE(ASC_USER_NOTE,"Found %d fixable variables.",i);
354 //cerr << "END ELEGIBLE VARS LIST" << endl;
355 ascfree(vip);
356 //cerr << "FREED VIP LIST" << endl;
357 }
358
359 //cerr << "FINISHED WITH FINDING ELEGIBLE VARIABLES" << endl;
360 return vars;
361 }
362
363 vector<Variable>
364 Simulation::getVariablesNearBounds(const double &epsilon){
365 cerr << "GETTING VARIABLES NEAR BOUNDS..." << endl;
366 vector<Variable> vars;
367
368 if(!sys){
369 throw runtime_error("Simulation system not yet built");
370 }
371
372 int *vip;
373 if(slv_near_bounds(sys,epsilon,&vip)){
374 struct var_variable **vp = slv_get_solvers_var_list(sys);
375 struct var_variable *var;
376 cerr << "VARS FOUND NEAR BOUNDS" << endl;
377 int nlow = vip[0];
378 int nhigh = vip[1];
379 int lim1 = 2 + nlow;
380 for(int i=2; i<lim1; ++i){
381 var = vp[vip[i]];
382 char *var_name = var_make_name(sys,var);
383 cerr << "AT LOWER BOUND: " << var_name << endl;
384 ascfree(var_name);
385 vars.push_back(Variable(this,var));
386 };
387 int lim2 = lim1 + nhigh;
388 for(int i=lim1; i<lim2; ++i){
389 var = vp[vip[i]];
390 char *var_name = var_make_name(sys,var);
391 cerr << "AT UPPER BOUND: " << var_name << endl;
392 ascfree(var_name);
393 vars.push_back(Variable(this,var));
394 }
395 }
396 ascfree(vip);
397 return vars;
398 }
399
400 void
401 Simulation::solve(Solver solver, SolverReporter &reporter){
402 if(!is_built){
403 throw runtime_error("Simulation::solver: simulation is not yet built, can't start solving.");
404 }
405
406 cerr << "SIMULATION::SOLVE STARTING..." << endl;
407 enum inst_t k = getModel().getKind();
408 if(k!=MODEL_INST)throw runtime_error("Can't solve: not an instance of type MODEL_INST");
409
410 Instance *i1 = getInternalType();
411 int npend = NumberPendingInstances(&*i1);
412 if(npend)throw runtime_error("Can't solve: There are still %d pending instances");
413
414 if(!sys)throw runtime_error("Can't solve: Simulation system has not been built yet.");
415
416 cerr << "SIMULATION::SOLVE: SET SOLVER..." << endl;
417 setSolver(solver);
418
419
420 cerr << "PRESOLVING SYSTEM...";
421 slv_presolve(sys);
422 cerr << "DONE" << endl;
423
424 cerr << "SOLVING SYSTEM..." << endl;
425 // Add some stuff here for cleverer iteration....
426 unsigned niter = 1000;
427 double updateinterval = 0.02;
428
429 double starttime = tm_cpu_time();
430 double lastupdate = starttime;
431 SolverStatus status;
432 int solved_vars=0;
433 bool stop=false;
434
435 status.getSimulationStatus(*this);
436 reporter.report(&status);
437
438 for(int iter = 1; iter <= niter && !stop; ++iter){
439
440 if(status.isReadyToSolve()){
441 slv_iterate(sys);
442 }
443
444 status.getSimulationStatus(*this);
445
446 if(reporter.report(&status)){
447 stop = true;
448 }
449 }
450
451 double elapsed = tm_cpu_time() - starttime;
452
453
454 activeblock = status.getCurrentBlockNum();
455
456 reporter.finalise(&status);
457
458 // Just a little bit of console output:
459
460 if(status.isOK()){
461 cerr << "... SOLVED, STATUS OK" << endl;
462 }else{
463 cerr << "... SOLVER FAILED" << endl;
464 }
465
466 cerr << "SOLVER PERFORMED " << status.getIterationNum() << " ITERATIONS IN " << elapsed << "s" << endl;
467 }
468
469 void
470 Simulation::write(){
471 simroot.write();
472 }
473
474 //------------------------------------------
475 // ASSIGNING SOLVER TO SIMULATION
476
477 void
478 Simulation::setSolver(Solver &solver){
479 cerr << "SETTING SOLVER ON SIMULATION TO " << solver.getName() << endl;
480
481 if(!sys)throw runtime_error("Can't solve: Simulation system has not been built yet.");
482 // Update the solver object because sometimes an alternative solver can be returned, apparently.
483
484 int selected = slv_select_solver(sys, solver.getIndex());
485 //cerr << "Simulation::setSolver: slv_select_solver returned " << selected << endl;
486
487 if(selected<0){
488 ERROR_REPORTER_NOLINE(ASC_PROG_ERROR,"Failed to select solver");
489 throw runtime_error("Failed to select solver");
490 }
491
492 if(selected!=solver.getIndex()){
493 solver = Solver(slv_solver_name(selected));
494 ERROR_REPORTER_NOLINE(ASC_PROG_NOTE,"Substitute solver '%s' (index %d) selected.\n", solver.getName().c_str(), selected);
495 }
496
497 if( slv_eligible_solver(sys) <= 0){
498 ERROR_REPORTER_NOLINE(ASC_PROG_ERROR,"Inelegible solver '%s'", solver.getName().c_str() );
499 throw runtime_error("Inelegible solver");
500 }
501 }
502
503 const Solver
504 Simulation::getSolver() const{
505 int index = slv_get_selected_solver(sys);
506 //cerr << "Simulation::getSolver: index = " << index << endl;
507 if(index<0)throw runtime_error("No solver selected");
508
509 return Solver(slv_solver_name(index));
510 }
511
512
513 /**
514 Get solver parameters struct wrapped up as a SolverParameters class.
515 */
516 SolverParameters
517 Simulation::getSolverParameters() const{
518 if(!sys)throw runtime_error("Can't getSolverParameters: Simulation system has not been built yet.");
519
520 slv_parameters_t p;
521 slv_get_parameters(sys,&p);
522 return SolverParameters(p);
523 }
524
525 /**
526 Update the solver parameters by passing a new set back
527 */
528 void
529 Simulation::setSolverParameters(SolverParameters &P){
530 if(!sys)throw runtime_error("Can't set solver parameters: simulation has not been built yet.");
531 slv_set_parameters(sys, &(P.getInternalType()));
532 }
533
534 slv_system_structure *
535 Simulation::getSystem(){
536 if(!sys)throw runtime_error("Can't getSystem: simulation not yet built");
537 return sys;
538 }
539
540 IncidenceMatrix
541 Simulation::getIncidenceMatrix(){
542 return IncidenceMatrix(*this);
543 }
544
545 const string
546 Simulation::getInstanceName(const Instanc &i) const{
547 char *n;
548 n = WriteInstanceNameString(i.getInternalType(),simroot.getInternalType());
549 string s(n);
550 ascfree(n);
551 return s;
552 }
553
554 const int
555 Simulation::getNumVars(){
556 return slv_get_num_solvers_vars(getSystem());
557 }
558
559 void
560 Simulation::processVarStatus(){
561
562 // this is a cheap function call:
563 const mtx_block_t *bb = slv_get_solvers_blocks(getSystem());
564
565 var_variable **vlist = slv_get_solvers_var_list(getSystem());
566 int nvars = slv_get_num_solvers_vars(getSystem());
567
568 slv_status_t status;
569 slv_get_status(getSystem(), &status);
570
571 if(status.block.number_of == 0){
572 cerr << "Variable statuses can't be set: block structure not yet determined." << endl;
573 return;
574 }
575
576 int activeblock = status.block.current_block;
577 int low = bb->block[activeblock].col.low;
578 int high = bb->block[activeblock].col.high;
579 bool allsolved = status.converged;
580 for(int c=0; c < nvars; ++c){
581 var_variable *v = vlist[c];
582 Instanc i((Instance *)var_instance(v));
583 VarStatus s = ASCXX_VAR_STATUS_UNKNOWN;
584 if(i.isFixed()){
585 s = ASCXX_VAR_FIXED;
586 }else if(var_incident(v) && var_active(v)){
587 if(allsolved || c < low){
588 s = ASCXX_VAR_SOLVED;
589 }else if(c <= high){
590 s = ASCXX_VAR_ACTIVE;
591 }else{
592 s = ASCXX_VAR_UNSOLVED;
593 }
594 }
595 i.setVarStatus(s);
596 }
597 }
598
599 const int
600 Simulation::getActiveBlock() const{
601 return activeblock;
602 }

john.pye@anu.edu.au
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