Actual source code: itcl.c
petsc-3.11.3 2019-06-26
2: /*
3: Code for setting KSP options from the options database.
4: */
6: #include <petsc/private/kspimpl.h>
7: #include <petscdraw.h>
9: static PetscErrorCode KSPSetupMonitor_Private(KSP ksp, PetscViewer viewer, PetscViewerFormat format, PetscErrorCode (*monitor)(KSP,PetscInt,PetscReal,void*), PetscBool useMonitor)
10: {
14: if (useMonitor) {
15: PetscViewerAndFormat *vf;
17: PetscViewerAndFormatCreate(viewer, format, &vf);
18: PetscObjectDereference((PetscObject) viewer);
19: KSPMonitorSet(ksp, monitor, vf, (PetscErrorCode (*)(void**)) PetscViewerAndFormatDestroy);
20: }
21: return(0);
22: }
24: /*@C
25: KSPSetOptionsPrefix - Sets the prefix used for searching for all
26: KSP options in the database.
28: Logically Collective on KSP
30: Input Parameters:
31: + ksp - the Krylov context
32: - prefix - the prefix string to prepend to all KSP option requests
34: Notes:
35: A hyphen (-) must NOT be given at the beginning of the prefix name.
36: The first character of all runtime options is AUTOMATICALLY the
37: hyphen.
39: For example, to distinguish between the runtime options for two
40: different KSP contexts, one could call
41: .vb
42: KSPSetOptionsPrefix(ksp1,"sys1_")
43: KSPSetOptionsPrefix(ksp2,"sys2_")
44: .ve
46: This would enable use of different options for each system, such as
47: .vb
48: -sys1_ksp_type gmres -sys1_ksp_rtol 1.e-3
49: -sys2_ksp_type bcgs -sys2_ksp_rtol 1.e-4
50: .ve
52: Level: advanced
54: .keywords: KSP, set, options, prefix, database
56: .seealso: KSPAppendOptionsPrefix(), KSPGetOptionsPrefix()
57: @*/
58: PetscErrorCode KSPSetOptionsPrefix(KSP ksp,const char prefix[])
59: {
64: if (!ksp->pc) {KSPGetPC(ksp,&ksp->pc);}
65: PCSetOptionsPrefix(ksp->pc,prefix);
66: PetscObjectSetOptionsPrefix((PetscObject)ksp,prefix);
67: return(0);
68: }
70: /*@C
71: KSPAppendOptionsPrefix - Appends to the prefix used for searching for all
72: KSP options in the database.
74: Logically Collective on KSP
76: Input Parameters:
77: + ksp - the Krylov context
78: - prefix - the prefix string to prepend to all KSP option requests
80: Notes:
81: A hyphen (-) must NOT be given at the beginning of the prefix name.
82: The first character of all runtime options is AUTOMATICALLY the hyphen.
84: Level: advanced
86: .keywords: KSP, append, options, prefix, database
88: .seealso: KSPSetOptionsPrefix(), KSPGetOptionsPrefix()
89: @*/
90: PetscErrorCode KSPAppendOptionsPrefix(KSP ksp,const char prefix[])
91: {
96: if (!ksp->pc) {KSPGetPC(ksp,&ksp->pc);}
97: PCAppendOptionsPrefix(ksp->pc,prefix);
98: PetscObjectAppendOptionsPrefix((PetscObject)ksp,prefix);
99: return(0);
100: }
102: /*@
103: KSPGetTabLevel - Gets the number of tabs that ASCII output used by ksp.
105: Not Collective
107: Input Parameter:
108: . ksp - a KSP object.
110: Output Parameter:
111: . tab - the number of tabs
113: Level: developer
115: Notes:
116: this is used in conjunction with KSPSetTabLevel() to manage the output from the KSP and its PC coherently.
119: .seealso: KSPSetTabLevel()
121: @*/
122: PetscErrorCode KSPGetTabLevel(KSP ksp,PetscInt *tab)
123: {
128: PetscObjectGetTabLevel((PetscObject)ksp, tab);
129: return(0);
130: }
132: /*@
133: KSPSetTabLevel - Sets the number of tabs that ASCII output for the ksp andn its pc will use.
135: Not Collective
137: Input Parameters:
138: + ksp - a KSP object
139: - tab - the number of tabs
141: Level: developer
143: Notes:
144: this is used to manage the output from KSP and PC objects that are imbedded in other objects,
145: for example, the KSP object inside a SNES object. By indenting each lower level further the heirarchy
146: of objects is very clear. By setting the KSP object's tab level with KSPSetTabLevel() its PC object
147: automatically receives the same tab level, so that whatever objects the pc might create are tabbed
148: appropriately, too.
150: .seealso: KSPGetTabLevel()
151: @*/
152: PetscErrorCode KSPSetTabLevel(KSP ksp, PetscInt tab)
153: {
158: PetscObjectSetTabLevel((PetscObject)ksp, tab);
159: if (!ksp->pc) {KSPGetPC(ksp,&ksp->pc);}
160: /* Do we need a PCSetTabLevel()? */
161: PetscObjectSetTabLevel((PetscObject)ksp->pc, tab);
162: return(0);
163: }
165: /*@
166: KSPSetUseFischerGuess - Use the Paul Fischer algorithm
168: Logically Collective on KSP
170: Input Parameters:
171: + ksp - the Krylov context
172: . model - use model 1, model 2 or any other number to turn it off
173: - size - size of subspace used to generate initial guess
175: Options Database:
176: . -ksp_fischer_guess <model,size> - uses the Fischer initial guess generator for repeated linear solves
178: Level: advanced
180: .keywords: KSP, set, options, prefix, database
182: .seealso: KSPSetOptionsPrefix(), KSPAppendOptionsPrefix(), KSPSetUseFischerGuess(), KSPSetGuess(), KSPGetGuess()
183: @*/
184: PetscErrorCode KSPSetUseFischerGuess(KSP ksp,PetscInt model,PetscInt size)
185: {
186: KSPGuess guess;
193: KSPGetGuess(ksp,&guess);
194: KSPGuessSetType(guess,KSPGUESSFISCHER);
195: KSPGuessFischerSetModel(guess,model,size);
196: return(0);
197: }
199: /*@
200: KSPSetGuess - Set the initial guess object
202: Logically Collective on KSP
204: Input Parameters:
205: + ksp - the Krylov context
206: - guess - the object created with KSPGuessCreate()
208: Level: advanced
210: Notes:
211: this allows a single KSP to be used with several different initial guess generators (likely for different linear
212: solvers, see KSPSetPC()).
214: This increases the reference count of the guess object, you must destroy the object with KSPGuessDestroy()
215: before the end of the program.
217: .keywords: KSP, set, options, prefix, database
219: .seealso: KSPSetOptionsPrefix(), KSPAppendOptionsPrefix(), KSPSetUseFischerGuess(), KSPGetGuess()
220: @*/
221: PetscErrorCode KSPSetGuess(KSP ksp,KSPGuess guess)
222: {
228: PetscObjectReference((PetscObject)guess);
229: KSPGuessDestroy(&ksp->guess);
230: ksp->guess = guess;
231: ksp->guess->ksp = ksp;
232: return(0);
233: }
235: /*@
236: KSPGetGuess - Gets the initial guess generator for the KSP.
238: Not Collective
240: Input Parameters:
241: . ksp - the Krylov context
243: Output Parameters:
244: . guess - the object
246: Level: developer
248: .keywords: KSP, set, options, prefix, database
250: .seealso: KSPSetOptionsPrefix(), KSPAppendOptionsPrefix(), KSPSetUseFischerGuess(), KSPSetGuess()
251: @*/
252: PetscErrorCode KSPGetGuess(KSP ksp,KSPGuess *guess)
253: {
259: if (!ksp->guess) {
260: const char* prefix;
262: KSPGuessCreate(PetscObjectComm((PetscObject)ksp),&ksp->guess);
263: PetscObjectGetOptionsPrefix((PetscObject)ksp,&prefix);
264: if (prefix) {
265: PetscObjectSetOptionsPrefix((PetscObject)ksp->guess,prefix);
266: }
267: ksp->guess->ksp = ksp;
268: }
269: *guess = ksp->guess;
270: return(0);
271: }
273: /*@C
274: KSPGetOptionsPrefix - Gets the prefix used for searching for all
275: KSP options in the database.
277: Not Collective
279: Input Parameters:
280: . ksp - the Krylov context
282: Output Parameters:
283: . prefix - pointer to the prefix string used is returned
285: Notes:
286: On the fortran side, the user should pass in a string 'prefix' of
287: sufficient length to hold the prefix.
289: Level: advanced
291: .keywords: KSP, set, options, prefix, database
293: .seealso: KSPSetOptionsPrefix(), KSPAppendOptionsPrefix()
294: @*/
295: PetscErrorCode KSPGetOptionsPrefix(KSP ksp,const char *prefix[])
296: {
301: PetscObjectGetOptionsPrefix((PetscObject)ksp,prefix);
302: return(0);
303: }
305: /*@C
306: KSPMonitorSetFromOptions - Sets a monitor function and viewer appropriate for the type indicated by the user
308: Collective on KSP
310: Input Parameters:
311: + ksp - KSP object you wish to monitor
312: . name - the monitor type one is seeking
313: . help - message indicating what monitoring is done
314: . manual - manual page for the monitor
315: - monitor - the monitor function, the context for this object is a PetscViewerAndFormat
317: Level: developer
319: .seealso: PetscOptionsGetViewer(), PetscOptionsGetReal(), PetscOptionsHasName(), PetscOptionsGetString(),
320: PetscOptionsGetIntArray(), PetscOptionsGetRealArray(), PetscOptionsBool()
321: PetscOptionsInt(), PetscOptionsString(), PetscOptionsReal(), PetscOptionsBool(),
322: PetscOptionsName(), PetscOptionsBegin(), PetscOptionsEnd(), PetscOptionsHead(),
323: PetscOptionsStringArray(),PetscOptionsRealArray(), PetscOptionsScalar(),
324: PetscOptionsBoolGroupBegin(), PetscOptionsBoolGroup(), PetscOptionsBoolGroupEnd(),
325: PetscOptionsFList(), PetscOptionsEList()
326: @*/
327: PetscErrorCode KSPMonitorSetFromOptions(KSP ksp,const char name[],const char help[], const char manual[],PetscErrorCode (*monitor)(KSP,PetscInt,PetscReal,PetscViewerAndFormat*))
328: {
329: PetscErrorCode ierr;
330: PetscBool flg;
331: PetscViewer viewer;
332: PetscViewerFormat format;
335: PetscOptionsGetViewer(PetscObjectComm((PetscObject)ksp),((PetscObject)ksp)->options,((PetscObject)ksp)->prefix,name,&viewer,&format,&flg);
336: KSPSetupMonitor_Private(ksp, viewer, format, (PetscErrorCode (*)(KSP,PetscInt,PetscReal,void*)) monitor, flg);
337: return(0);
338: }
340: /*@
341: KSPSetFromOptions - Sets KSP options from the options database.
342: This routine must be called before KSPSetUp() if the user is to be
343: allowed to set the Krylov type.
345: Collective on KSP
347: Input Parameters:
348: . ksp - the Krylov space context
350: Options Database Keys:
351: + -ksp_max_it - maximum number of linear iterations
352: . -ksp_rtol rtol - relative tolerance used in default determination of convergence, i.e.
353: if residual norm decreases by this factor than convergence is declared
354: . -ksp_atol abstol - absolute tolerance used in default convergence test, i.e. if residual
355: norm is less than this then convergence is declared
356: . -ksp_divtol tol - if residual norm increases by this factor than divergence is declared
357: . -ksp_converged_use_initial_residual_norm - see KSPConvergedDefaultSetUIRNorm()
358: . -ksp_converged_use_min_initial_residual_norm - see KSPConvergedDefaultSetUMIRNorm()
359: . -ksp_norm_type - none - skip norms used in convergence tests (useful only when not using
360: convergence test (say you always want to run with 5 iterations) to
361: save on communication overhead
362: preconditioned - default for left preconditioning
363: unpreconditioned - see KSPSetNormType()
364: natural - see KSPSetNormType()
365: . -ksp_check_norm_iteration it - do not compute residual norm until iteration number it (does compute at 0th iteration)
366: works only for PCBCGS, PCIBCGS and and PCCG
367: . -ksp_lag_norm - compute the norm of the residual for the ith iteration on the i+1 iteration; this means that one can use
368: the norm of the residual for convergence test WITHOUT an extra MPI_Allreduce() limiting global synchronizations.
369: This will require 1 more iteration of the solver than usual.
370: . -ksp_guess_type - Type of initial guess generator for repeated linear solves
371: . -ksp_fischer_guess <model,size> - uses the Fischer initial guess generator for repeated linear solves
372: . -ksp_constant_null_space - assume the operator (matrix) has the constant vector in its null space
373: . -ksp_test_null_space - tests the null space set with MatSetNullSpace() to see if it truly is a null space
374: . -ksp_knoll - compute initial guess by applying the preconditioner to the right hand side
375: . -ksp_monitor_cancel - cancel all previous convergene monitor routines set
376: . -ksp_monitor <optional filename> - print residual norm at each iteration
377: . -ksp_monitor_lg_residualnorm - plot residual norm at each iteration
378: . -ksp_monitor_solution [ascii binary or draw][:filename][:format option] - plot solution at each iteration
379: - -ksp_monitor_singular_value - monitor extreme singular values at each iteration
381: Notes:
382: To see all options, run your program with the -help option
383: or consult Users-Manual: Chapter 4 KSP: Linear System Solvers
385: Level: beginner
387: .keywords: KSP, set, from, options, database
389: .seealso: KSPSetOptionsPrefix(), KSPResetFromOptions(), KSPSetUseFischerGuess()
391: @*/
392: PetscErrorCode KSPSetFromOptions(KSP ksp)
393: {
394: PetscInt indx;
395: const char *convtests[] = {"default","skip","lsqr"};
396: char type[256], guesstype[256], monfilename[PETSC_MAX_PATH_LEN];
397: PetscBool flg,flag,reuse,set;
398: PetscInt model[2]={0,0},nmax;
399: KSPNormType normtype;
400: PCSide pcside;
401: void *ctx;
402: MPI_Comm comm;
403: const char *prefix;
408: PetscObjectGetComm((PetscObject) ksp, &comm);
409: PetscObjectGetOptionsPrefix((PetscObject) ksp, &prefix);
410: if (!ksp->skippcsetfromoptions) {
411: if (!ksp->pc) {KSPGetPC(ksp,&ksp->pc);}
412: PCSetFromOptions(ksp->pc);
413: }
415: KSPRegisterAll();
416: PetscObjectOptionsBegin((PetscObject)ksp);
417: PetscOptionsFList("-ksp_type","Krylov method","KSPSetType",KSPList,(char*)(((PetscObject)ksp)->type_name ? ((PetscObject)ksp)->type_name : KSPGMRES),type,256,&flg);
418: if (flg) {
419: KSPSetType(ksp,type);
420: }
421: /*
422: Set the type if it was never set.
423: */
424: if (!((PetscObject)ksp)->type_name) {
425: KSPSetType(ksp,KSPGMRES);
426: }
428: KSPResetViewers(ksp);
430: PetscObjectTypeCompare((PetscObject)ksp,KSPPREONLY,&flg);
431: if (flg) {
432: PCGetReusePreconditioner(ksp->pc,&reuse);
433: PetscOptionsBool("-ksp_error_if_not_converged","Generate error if solver does not converge","KSPSetErrorIfNotConverged",ksp->errorifnotconverged,&ksp->errorifnotconverged,NULL);
434: PetscOptionsBool("-ksp_reuse_preconditioner","Use initial preconditioner and don't ever compute a new one ","KSPReusePreconditioner",reuse,&reuse,NULL);
435: KSPSetReusePreconditioner(ksp,reuse);
436: PetscOptionsGetViewer(comm,((PetscObject) ksp)->options,prefix,"-ksp_view", &ksp->viewer, &ksp->format, &ksp->view);
437: PetscOptionsGetViewer(comm,((PetscObject) ksp)->options,prefix,"-ksp_converged_reason", &ksp->viewerReason, &ksp->formatReason, &ksp->viewReason);
438: PetscOptionsGetViewer(comm,((PetscObject) ksp)->options,prefix,"-ksp_view_mat", &ksp->viewerMat, &ksp->formatMat, &ksp->viewMat);
439: PetscOptionsGetViewer(comm,((PetscObject) ksp)->options,prefix,"-ksp_view_pmat", &ksp->viewerPMat, &ksp->formatPMat, &ksp->viewPMat);
440: PetscOptionsGetViewer(comm,((PetscObject) ksp)->options,prefix,"-ksp_view_rhs", &ksp->viewerRhs, &ksp->formatRhs, &ksp->viewRhs);
441: PetscOptionsGetViewer(comm,((PetscObject) ksp)->options,prefix,"-ksp_view_solution", &ksp->viewerSol, &ksp->formatSol, &ksp->viewSol);
442: PetscOptionsGetViewer(comm,((PetscObject) ksp)->options,prefix,"-ksp_view_mat_explicit", &ksp->viewerMatExp, &ksp->formatMatExp, &ksp->viewMatExp);
443: PetscOptionsGetViewer(comm,((PetscObject) ksp)->options,prefix,"-ksp_view_final_residual", &ksp->viewerFinalRes,&ksp->formatFinalRes,&ksp->viewFinalRes);
444: PetscOptionsGetViewer(comm,((PetscObject) ksp)->options,prefix,"-ksp_view_preconditioned_operator_explicit",&ksp->viewerPOpExp, &ksp->formatPOpExp, &ksp->viewPOpExp);
445: PetscOptionsGetViewer(comm,((PetscObject) ksp)->options,prefix,"-ksp_view_diagonal_scale", &ksp->viewerDScale, &ksp->formatDScale, &ksp->viewDScale);
447: KSPGetDiagonalScale(ksp,&flag);
448: PetscOptionsBool("-ksp_diagonal_scale","Diagonal scale matrix before building preconditioner","KSPSetDiagonalScale",flag,&flag,&flg);
449: if (flg) {
450: KSPSetDiagonalScale(ksp,flag);
451: }
452: KSPGetDiagonalScaleFix(ksp,&flag);
453: PetscOptionsBool("-ksp_diagonal_scale_fix","Fix diagonally scaled matrix after solve","KSPSetDiagonalScaleFix",flag,&flag,&flg);
454: if (flg) {
455: KSPSetDiagonalScaleFix(ksp,flag);
456: }
457: goto skipoptions;
458: }
460: PetscOptionsInt("-ksp_max_it","Maximum number of iterations","KSPSetTolerances",ksp->max_it,&ksp->max_it,NULL);
461: PetscOptionsReal("-ksp_rtol","Relative decrease in residual norm","KSPSetTolerances",ksp->rtol,&ksp->rtol,NULL);
462: PetscOptionsReal("-ksp_atol","Absolute value of residual norm","KSPSetTolerances",ksp->abstol,&ksp->abstol,NULL);
463: PetscOptionsReal("-ksp_divtol","Residual norm increase cause divergence","KSPSetTolerances",ksp->divtol,&ksp->divtol,NULL);
465: PetscOptionsBool("-ksp_converged_use_initial_residual_norm","Use initial residual norm for computing relative convergence","KSPConvergedDefaultSetUIRNorm",PETSC_FALSE,&flag,&set);
466: if (set && flag) {KSPConvergedDefaultSetUIRNorm(ksp);}
467: PetscOptionsBool("-ksp_converged_use_min_initial_residual_norm","Use minimum of initial residual norm and b for computing relative convergence","KSPConvergedDefaultSetUMIRNorm",PETSC_FALSE,&flag,&set);
468: if (set && flag) {KSPConvergedDefaultSetUMIRNorm(ksp);}
469: PetscOptionsBool("-ksp_initial_guess_nonzero","Use the contents of the solution vector for initial guess","KSPSetInitialNonzero",ksp->guess_zero ? PETSC_FALSE : PETSC_TRUE,&flag,&flg);
470: if (flg) {
471: KSPSetInitialGuessNonzero(ksp,flag);
472: }
473: PCGetReusePreconditioner(ksp->pc,&reuse);
474: PetscOptionsBool("-ksp_reuse_preconditioner","Use initial preconditioner and don't ever compute a new one ","KSPReusePreconditioner",reuse,&reuse,NULL);
475: KSPSetReusePreconditioner(ksp,reuse);
477: PetscOptionsBool("-ksp_knoll","Use preconditioner applied to b for initial guess","KSPSetInitialGuessKnoll",ksp->guess_knoll,&ksp->guess_knoll,NULL);
478: PetscOptionsBool("-ksp_error_if_not_converged","Generate error if solver does not converge","KSPSetErrorIfNotConverged",ksp->errorifnotconverged,&ksp->errorifnotconverged,NULL);
479: PetscOptionsFList("-ksp_guess_type","Initial guess in Krylov method",NULL,KSPGuessList,NULL,guesstype,256,&flg);
480: if (flg) {
481: KSPGetGuess(ksp,&ksp->guess);
482: KSPGuessSetType(ksp->guess,guesstype);
483: KSPGuessSetFromOptions(ksp->guess);
484: } else { /* old option for KSP */
485: nmax = 2;
486: PetscOptionsIntArray("-ksp_fischer_guess","Use Paul Fischer's algorithm for initial guess","KSPSetUseFischerGuess",model,&nmax,&flag);
487: if (flag) {
488: if (nmax != 2) SETERRQ(comm,PETSC_ERR_ARG_OUTOFRANGE,"Must pass in model,size as arguments");
489: KSPSetUseFischerGuess(ksp,model[0],model[1]);
490: }
491: }
493: PetscOptionsEList("-ksp_convergence_test","Convergence test","KSPSetConvergenceTest",convtests,3,"default",&indx,&flg);
494: if (flg) {
495: switch (indx) {
496: case 0:
497: KSPConvergedDefaultCreate(&ctx);
498: KSPSetConvergenceTest(ksp,KSPConvergedDefault,ctx,KSPConvergedDefaultDestroy);
499: break;
500: case 1: KSPSetConvergenceTest(ksp,KSPConvergedSkip,NULL,NULL); break;
501: case 2:
502: KSPConvergedDefaultCreate(&ctx);
503: KSPSetConvergenceTest(ksp,KSPLSQRConvergedDefault,ctx,KSPConvergedDefaultDestroy);
504: break;
505: }
506: }
508: KSPSetUpNorms_Private(ksp,PETSC_FALSE,&normtype,NULL);
509: PetscOptionsEnum("-ksp_norm_type","KSP Norm type","KSPSetNormType",KSPNormTypes,(PetscEnum)normtype,(PetscEnum*)&normtype,&flg);
510: if (flg) { KSPSetNormType(ksp,normtype); }
512: PetscOptionsInt("-ksp_check_norm_iteration","First iteration to compute residual norm","KSPSetCheckNormIteration",ksp->chknorm,&ksp->chknorm,NULL);
514: PetscOptionsBool("-ksp_lag_norm","Lag the calculation of the residual norm","KSPSetLagNorm",ksp->lagnorm,&flag,&flg);
515: if (flg) {
516: KSPSetLagNorm(ksp,flag);
517: }
519: KSPGetDiagonalScale(ksp,&flag);
520: PetscOptionsBool("-ksp_diagonal_scale","Diagonal scale matrix before building preconditioner","KSPSetDiagonalScale",flag,&flag,&flg);
521: if (flg) {
522: KSPSetDiagonalScale(ksp,flag);
523: }
524: KSPGetDiagonalScaleFix(ksp,&flag);
525: PetscOptionsBool("-ksp_diagonal_scale_fix","Fix diagonally scaled matrix after solve","KSPSetDiagonalScaleFix",flag,&flag,&flg);
526: if (flg) {
527: KSPSetDiagonalScaleFix(ksp,flag);
528: }
530: PetscOptionsBool("-ksp_constant_null_space","Add constant null space to Krylov solver matrix","MatSetNullSpace",PETSC_FALSE,&flg,&set);
531: if (set && flg) {
532: MatNullSpace nsp;
533: Mat Amat;
535: MatNullSpaceCreate(comm,PETSC_TRUE,0,NULL,&nsp);
536: PCGetOperators(ksp->pc,&Amat,NULL);
537: if (Amat) {
538: MatSetNullSpace(Amat,nsp);
539: MatNullSpaceDestroy(&nsp);
540: } else SETERRQ(comm,PETSC_ERR_ARG_WRONGSTATE,"Cannot set nullspace, matrix has not yet been provided");
541: }
543: PetscOptionsBool("-ksp_monitor_cancel","Remove any hardwired monitor routines","KSPMonitorCancel",PETSC_FALSE,&flg,&set);
544: /* -----------------------------------------------------------------------*/
545: /*
546: Cancels all monitors hardwired into code before call to KSPSetFromOptions()
547: */
548: if (set && flg) {
549: KSPMonitorCancel(ksp);
550: }
551: KSPMonitorSetFromOptions(ksp,"-ksp_monitor","Monitor the (preconditioned) residual norm","KSPMonitorDefault",KSPMonitorDefault);
552: KSPMonitorSetFromOptions(ksp,"-ksp_monitor_range","Monitor the percentage of large entries in the residual","KSPMonitorRange",KSPMonitorRange);
553: KSPMonitorSetFromOptions(ksp,"-ksp_monitor_true_residual","Monitor the unprecondiitoned residual norm","KSPMOnitorTrueResidual",KSPMonitorTrueResidualNorm);
554: KSPMonitorSetFromOptions(ksp,"-ksp_monitor_max","Monitor the maximum norm of the residual","KSPMonitorTrueResidualMaxNorm",KSPMonitorTrueResidualMaxNorm);
555: KSPMonitorSetFromOptions(ksp,"-ksp_monitor_short","Monitor preconditioned residual norm with fewer digits","KSPMonitorDefaultShort",KSPMonitorDefaultShort);
556: KSPMonitorSetFromOptions(ksp,"-ksp_monitor_solution","Monitor the solution","KSPMonitorSolution",KSPMonitorSolution);
557: KSPMonitorSetFromOptions(ksp,"-ksp_monitor_singular_value","Monitor singular values","KSPMonitorSingularValue",KSPMonitorSingularValue);
558: PetscOptionsHasName(NULL,((PetscObject)ksp)->prefix,"-ksp_monitor_singular_value",&flg);
559: if (flg) {
560: KSPSetComputeSingularValues(ksp,PETSC_TRUE);
561: }
562: PetscObjectTypeCompare((PetscObject)ksp->pc,PCKSP,&flg);
563: PetscObjectTypeCompare((PetscObject)ksp->pc,PCBJACOBI,&flag);
565: if (flg || flag) {
566: /* A hack for using dynamic tolerance in preconditioner */
567: PetscOptionsString("-sub_ksp_dynamic_tolerance","Use dynamic tolerance for PC if PC is a KSP","KSPMonitorDynamicTolerance","stdout",monfilename,PETSC_MAX_PATH_LEN,&flg);
568: if (flg) {
569: KSPDynTolCtx *scale;
570: PetscMalloc1(1,&scale);
571: scale->bnrm = -1.0;
572: scale->coef = 1.0;
573: PetscOptionsReal("-sub_ksp_dynamic_tolerance_param","Parameter of dynamic tolerance for inner PCKSP","KSPMonitorDynamicToleranceParam",scale->coef,&scale->coef,&flg);
574: KSPMonitorSet(ksp,KSPMonitorDynamicTolerance,scale,KSPMonitorDynamicToleranceDestroy);
575: }
576: }
578: /*
579: Calls Python function
580: */
581: PetscOptionsString("-ksp_monitor_python","Use Python function","KSPMonitorSet",0,monfilename,PETSC_MAX_PATH_LEN,&flg);
582: if (flg) {PetscPythonMonitorSet((PetscObject)ksp,monfilename);}
583: /*
584: Graphically plots preconditioned residual norm
585: */
586: PetscOptionsBool("-ksp_monitor_lg_residualnorm","Monitor graphically preconditioned residual norm","KSPMonitorSet",PETSC_FALSE,&flg,&set);
587: if (set && flg) {
588: PetscDrawLG ctx;
590: KSPMonitorLGResidualNormCreate(comm,NULL,NULL,PETSC_DECIDE,PETSC_DECIDE,400,300,&ctx);
591: KSPMonitorSet(ksp,KSPMonitorLGResidualNorm,ctx,(PetscErrorCode (*)(void**))PetscDrawLGDestroy);
592: }
593: /*
594: Graphically plots preconditioned and true residual norm
595: */
596: PetscOptionsBool("-ksp_monitor_lg_true_residualnorm","Monitor graphically true residual norm","KSPMonitorSet",PETSC_FALSE,&flg,&set);
597: if (set && flg) {
598: PetscDrawLG ctx;
600: KSPMonitorLGTrueResidualNormCreate(comm,NULL,NULL,PETSC_DECIDE,PETSC_DECIDE,400,300,&ctx);
601: KSPMonitorSet(ksp,KSPMonitorLGTrueResidualNorm,ctx,(PetscErrorCode (*)(void**))PetscDrawLGDestroy);
602: }
603: /*
604: Graphically plots preconditioned residual norm and range of residual element values
605: */
606: PetscOptionsBool("-ksp_monitor_lg_range","Monitor graphically range of preconditioned residual norm","KSPMonitorSet",PETSC_FALSE,&flg,&set);
607: if (set && flg) {
608: PetscViewer ctx;
610: PetscViewerDrawOpen(comm,NULL,NULL,PETSC_DECIDE,PETSC_DECIDE,400,300,&ctx);
611: KSPMonitorSet(ksp,KSPMonitorLGRange,ctx,(PetscErrorCode (*)(void**))PetscViewerDestroy);
612: }
613: /* TODO Do these show up in help? */
614: PetscOptionsGetViewer(comm,((PetscObject) ksp)->options,prefix,"-ksp_view", &ksp->viewer, &ksp->format, &ksp->view);
615: PetscOptionsGetViewer(comm,((PetscObject) ksp)->options,prefix,"-ksp_view_pre", &ksp->viewerPre, &ksp->formatPre, &ksp->viewPre);
616: PetscOptionsGetViewer(comm,((PetscObject) ksp)->options,prefix,"-ksp_converged_reason", &ksp->viewerReason, &ksp->formatReason, &ksp->viewReason);
617: PetscOptionsGetViewer(comm,((PetscObject) ksp)->options,prefix,"-ksp_view_mat", &ksp->viewerMat, &ksp->formatMat, &ksp->viewMat);
618: PetscOptionsGetViewer(comm,((PetscObject) ksp)->options,prefix,"-ksp_view_pmat", &ksp->viewerPMat, &ksp->formatPMat, &ksp->viewPMat);
619: PetscOptionsGetViewer(comm,((PetscObject) ksp)->options,prefix,"-ksp_view_rhs", &ksp->viewerRhs, &ksp->formatRhs, &ksp->viewRhs);
620: PetscOptionsGetViewer(comm,((PetscObject) ksp)->options,prefix,"-ksp_view_solution", &ksp->viewerSol, &ksp->formatSol, &ksp->viewSol);
621: PetscOptionsGetViewer(comm,((PetscObject) ksp)->options,prefix,"-ksp_view_mat_explicit", &ksp->viewerMatExp, &ksp->formatMatExp, &ksp->viewMatExp);
622: PetscOptionsGetViewer(comm,((PetscObject) ksp)->options,prefix,"-ksp_view_eigenvalues", &ksp->viewerEV, &ksp->formatEV, &ksp->viewEV);
623: PetscOptionsGetViewer(comm,((PetscObject) ksp)->options,prefix,"-ksp_view_singularvalues", &ksp->viewerSV, &ksp->formatSV, &ksp->viewSV);
624: PetscOptionsGetViewer(comm,((PetscObject) ksp)->options,prefix,"-ksp_view_eigenvalues_explicit", &ksp->viewerEVExp, &ksp->formatEVExp, &ksp->viewEVExp);
625: PetscOptionsGetViewer(comm,((PetscObject) ksp)->options,prefix,"-ksp_view_final_residual", &ksp->viewerFinalRes,&ksp->formatFinalRes,&ksp->viewFinalRes);
626: PetscOptionsGetViewer(comm,((PetscObject) ksp)->options,prefix,"-ksp_view_preconditioned_operator_explicit",&ksp->viewerPOpExp, &ksp->formatPOpExp, &ksp->viewPOpExp);
627: PetscOptionsGetViewer(comm,((PetscObject) ksp)->options,prefix,"-ksp_view_diagonal_scale", &ksp->viewerDScale, &ksp->formatDScale, &ksp->viewDScale);
629: /* Deprecated options */
630: if (!ksp->viewEV) {PetscOptionsGetViewer(comm, ((PetscObject) ksp)->options,prefix, "-ksp_compute_eigenvalues", &ksp->viewerEV, &ksp->formatEV, &ksp->viewEV);}
631: if (!ksp->viewEV) {
632: PetscOptionsName("-ksp_plot_eigenvalues", "[deprecated since PETSc 3.9; use -ksp_view_eigenvalues draw]", "KSPView", &ksp->viewEV);
633: if (ksp->viewEV) {
634: ksp->formatEV = PETSC_VIEWER_DEFAULT;
635: ksp->viewerEV = PETSC_VIEWER_DRAW_(comm);
636: PetscObjectReference((PetscObject) ksp->viewerEV);
637: }
638: }
639: if (!ksp->viewEV) {
640: PetscOptionsName("-ksp_plot_eigencontours", "[deprecated since PETSc 3.9; use -ksp_view_eigenvalues draw::draw_contour]", "KSPView", &ksp->viewEV);
641: if (ksp->viewEV) {
642: ksp->formatEV = PETSC_VIEWER_DRAW_CONTOUR;
643: ksp->viewerEV = PETSC_VIEWER_DRAW_(comm);
644: PetscObjectReference((PetscObject) ksp->viewerEV);
645: }
646: }
647: if (!ksp->viewEVExp) {PetscOptionsGetViewer(comm, ((PetscObject) ksp)->options,prefix, "-ksp_compute_eigenvalues_explicitly", &ksp->viewerEVExp, &ksp->formatEVExp, &ksp->viewEVExp);}
648: if (!ksp->viewEVExp) {
649: PetscOptionsName("-ksp_plot_eigenvalues_explicitly", "[deprecated since PETSc 3.9; use -ksp_view_eigenvalues_explicit draw]", "KSPView", &ksp->viewEVExp);
650: if (ksp->viewEVExp) {
651: ksp->formatEVExp = PETSC_VIEWER_DEFAULT;
652: ksp->viewerEVExp = PETSC_VIEWER_DRAW_(comm);
653: PetscObjectReference((PetscObject) ksp->viewerEVExp);
654: }
655: }
656: if (!ksp->viewSV) {PetscOptionsGetViewer(comm, ((PetscObject) ksp)->options,prefix, "-ksp_compute_singularvalues", &ksp->viewerSV, &ksp->formatSV, &ksp->viewSV);}
657: if (!ksp->viewFinalRes) {PetscOptionsGetViewer(comm, ((PetscObject) ksp)->options,prefix, "-ksp_final_residual", &ksp->viewerFinalRes, &ksp->formatFinalRes, &ksp->viewFinalRes);}
659: #if defined(PETSC_HAVE_SAWS)
660: /*
661: Publish convergence information using AMS
662: */
663: PetscOptionsBool("-ksp_monitor_saws","Publish KSP progress using SAWs","KSPMonitorSet",PETSC_FALSE,&flg,&set);
664: if (set && flg) {
665: void *ctx;
666: KSPMonitorSAWsCreate(ksp,&ctx);
667: KSPMonitorSet(ksp,KSPMonitorSAWs,ctx,KSPMonitorSAWsDestroy);
668: KSPSetComputeSingularValues(ksp,PETSC_TRUE);
669: }
670: #endif
672: /* -----------------------------------------------------------------------*/
673: KSPSetUpNorms_Private(ksp,PETSC_FALSE,NULL,&pcside);
674: PetscOptionsEnum("-ksp_pc_side","KSP preconditioner side","KSPSetPCSide",PCSides,(PetscEnum)pcside,(PetscEnum*)&pcside,&flg);
675: if (flg) {KSPSetPCSide(ksp,pcside);}
677: if (ksp->viewEV || ksp->viewSV) {
678: KSPSetComputeSingularValues(ksp,PETSC_TRUE);
679: }
681: #if defined(PETSC_HAVE_SAWS)
682: {
683: PetscBool set;
684: flg = PETSC_FALSE;
685: PetscOptionsBool("-ksp_saws_block","Block for SAWs at end of KSPSolve","PetscObjectSAWsBlock",((PetscObject)ksp)->amspublishblock,&flg,&set);
686: if (set) {
687: PetscObjectSAWsSetBlock((PetscObject)ksp,flg);
688: }
689: }
690: #endif
692: if (ksp->ops->setfromoptions) {
693: (*ksp->ops->setfromoptions)(PetscOptionsObject,ksp);
694: }
695: skipoptions:
696: /* process any options handlers added with PetscObjectAddOptionsHandler() */
697: PetscObjectProcessOptionsHandlers(PetscOptionsObject,(PetscObject)ksp);
698: PetscOptionsEnd();
699: ksp->setfromoptionscalled++;
700: return(0);
701: }
703: /*@
704: KSPResetFromOptions - Sets various KSP parameters from user options ONLY if the KSP was previously set from options
706: Collective on KSP
708: Input Parameter:
709: . ksp - the KSP context
711: Level: beginner
713: .keywords: KSP, linear, set, options, database
715: .seealso: KSPSetFromOptions(), KSPSetOptionsPrefix()
716: @*/
717: PetscErrorCode KSPResetFromOptions(KSP ksp)
718: {
722: if (ksp->setfromoptionscalled) {KSPSetFromOptions(ksp);}
723: return(0);
724: }