Actual source code: petscksp.h

petsc-3.8.2 2017-11-09
Report Typos and Errors
  1: /*
  2:    Defines the interface functions for the Krylov subspace accelerators.
  3: */
  4: #ifndef __PETSCKSP_H
  6:  #include <petscpc.h>

  8: PETSC_EXTERN PetscErrorCode KSPInitializePackage(void);

 10: /*S
 11:      KSP - Abstract PETSc object that manages all Krylov methods. This is the object that manages the
 12:          linear solves in PETSc (even those such as direct solvers that do no use Krylov accelerators).

 14:    Level: beginner

 16:   Concepts: Krylov methods

 18:         Notes: When a direct solver is used but no Krylov solver is used the KSP object is still used by with a
 19:        KSPType of KSPPREONLY (meaning application of the preconditioner is only used as the linear solver).

 21: .seealso:  KSPCreate(), KSPSetType(), KSPType, SNES, TS, PC, KSP, KSPDestroy(), KSPCG, KSPGMRES
 22: S*/
 23: typedef struct _p_KSP*     KSP;

 25: /*J
 26:     KSPType - String with the name of a PETSc Krylov method.

 28:    Level: beginner

 30: .seealso: KSPSetType(), KSP, KSPRegister(), KSPCreate(), KSPSetFromOptions()
 31: J*/
 32: typedef const char* KSPType;
 33: #define KSPRICHARDSON "richardson"
 34: #define KSPCHEBYSHEV  "chebyshev"
 35: #define KSPCG         "cg"
 36: #define KSPGROPPCG    "groppcg"
 37: #define KSPPIPECG     "pipecg"
 38: #define KSPPIPECGRR   "pipecgrr"
 39: #define   KSPCGNE       "cgne"
 40: #define   KSPCGNASH     "nash"
 41: #define   KSPCGSTCG     "stcg"
 42: #define   KSPCGGLTR     "gltr"
 43: #define KSPFCG        "fcg"
 44: #define KSPPIPEFCG    "pipefcg"
 45: #define KSPGMRES      "gmres"
 46: #define KSPPIPEFGMRES "pipefgmres"
 47: #define   KSPFGMRES     "fgmres"
 48: #define   KSPLGMRES     "lgmres"
 49: #define   KSPDGMRES     "dgmres"
 50: #define   KSPPGMRES     "pgmres"
 51: #define KSPTCQMR      "tcqmr"
 52: #define KSPBCGS       "bcgs"
 53: #define   KSPIBCGS      "ibcgs"
 54: #define   KSPFBCGS      "fbcgs"
 55: #define   KSPFBCGSR     "fbcgsr"
 56: #define   KSPBCGSL      "bcgsl"
 57: #define   KSPPIPEBCGS   "pipebcgs"
 58: #define KSPCGS        "cgs"
 59: #define KSPTFQMR      "tfqmr"
 60: #define KSPCR         "cr"
 61: #define KSPPIPECR     "pipecr"
 62: #define KSPLSQR       "lsqr"
 63: #define KSPPREONLY    "preonly"
 64: #define KSPQCG        "qcg"
 65: #define KSPBICG       "bicg"
 66: #define KSPMINRES     "minres"
 67: #define KSPSYMMLQ     "symmlq"
 68: #define KSPLCD        "lcd"
 69: #define KSPPYTHON     "python"
 70: #define KSPGCR        "gcr"
 71: #define KSPPIPEGCR    "pipegcr"
 72: #define KSPTSIRM      "tsirm"
 73: #define KSPCGLS       "cgls"
 74: #define KSPFETIDP     "fetidp"

 76: /* Logging support */
 77: PETSC_EXTERN PetscClassId KSP_CLASSID;
 78: PETSC_EXTERN PetscClassId KSPGUESS_CLASSID;
 79: PETSC_EXTERN PetscClassId DMKSP_CLASSID;

 81: PETSC_EXTERN PetscErrorCode KSPCreate(MPI_Comm,KSP*);
 82: PETSC_EXTERN PetscErrorCode KSPSetType(KSP,KSPType);
 83: PETSC_EXTERN PetscErrorCode KSPGetType(KSP,KSPType*);
 84: PETSC_EXTERN PetscErrorCode KSPSetUp(KSP);
 85: PETSC_EXTERN PetscErrorCode KSPSetUpOnBlocks(KSP);
 86: PETSC_EXTERN PetscErrorCode KSPSolve(KSP,Vec,Vec);
 87: PETSC_EXTERN PetscErrorCode KSPSolveTranspose(KSP,Vec,Vec);
 88: PETSC_EXTERN PetscErrorCode KSPReset(KSP);
 89: PETSC_EXTERN PetscErrorCode KSPDestroy(KSP*);
 90: PETSC_EXTERN PetscErrorCode KSPSetReusePreconditioner(KSP,PetscBool);
 91: PETSC_EXTERN PetscErrorCode KSPSetSkipPCSetFromOptions(KSP,PetscBool);

 93: PETSC_EXTERN PetscFunctionList KSPList;
 94: PETSC_EXTERN PetscFunctionList KSPGuessList;
 95: PETSC_EXTERN PetscErrorCode KSPRegister(const char[],PetscErrorCode (*)(KSP));

 97: PETSC_EXTERN PetscErrorCode KSPSetPCSide(KSP,PCSide);
 98: PETSC_EXTERN PetscErrorCode KSPGetPCSide(KSP,PCSide*);
 99: PETSC_EXTERN PetscErrorCode KSPSetTolerances(KSP,PetscReal,PetscReal,PetscReal,PetscInt);
100: PETSC_EXTERN PetscErrorCode KSPGetTolerances(KSP,PetscReal*,PetscReal*,PetscReal*,PetscInt*);
101: PETSC_EXTERN PetscErrorCode KSPSetInitialGuessNonzero(KSP,PetscBool);
102: PETSC_EXTERN PetscErrorCode KSPGetInitialGuessNonzero(KSP,PetscBool*);
103: PETSC_EXTERN PetscErrorCode KSPSetErrorIfNotConverged(KSP,PetscBool);
104: PETSC_EXTERN PetscErrorCode KSPGetErrorIfNotConverged(KSP,PetscBool*);
105: PETSC_EXTERN PetscErrorCode KSPSetComputeEigenvalues(KSP,PetscBool);
106: PETSC_EXTERN PetscErrorCode KSPSetComputeRitz(KSP,PetscBool);
107: PETSC_EXTERN PetscErrorCode KSPGetComputeEigenvalues(KSP,PetscBool*);
108: PETSC_EXTERN PetscErrorCode KSPSetComputeSingularValues(KSP,PetscBool);
109: PETSC_EXTERN PetscErrorCode KSPGetComputeSingularValues(KSP,PetscBool*);
110: PETSC_EXTERN PetscErrorCode KSPGetRhs(KSP,Vec*);
111: PETSC_EXTERN PetscErrorCode KSPGetSolution(KSP,Vec*);
112: PETSC_EXTERN PetscErrorCode KSPGetResidualNorm(KSP,PetscReal*);
113: PETSC_EXTERN PetscErrorCode KSPGetIterationNumber(KSP,PetscInt*);
114: PETSC_EXTERN PetscErrorCode KSPGetTotalIterations(KSP,PetscInt*);
115: PETSC_EXTERN PetscErrorCode KSPCreateVecs(KSP,PetscInt,Vec**,PetscInt,Vec**);
116: PETSC_DEPRECATED("Use KSPCreateVecs()") PETSC_STATIC_INLINE PetscErrorCode KSPGetVecs(KSP ksp,PetscInt n,Vec **x,PetscInt m,Vec **y) {return KSPCreateVecs(ksp,n,x,m,y);}

118: PETSC_EXTERN PetscErrorCode KSPSetPreSolve(KSP,PetscErrorCode (*)(KSP,Vec,Vec,void*),void*);
119: PETSC_EXTERN PetscErrorCode KSPSetPostSolve(KSP,PetscErrorCode (*)(KSP,Vec,Vec,void*),void*);

121: PETSC_EXTERN PetscErrorCode KSPSetPC(KSP,PC);
122: PETSC_EXTERN PetscErrorCode KSPGetPC(KSP,PC*);

124: PETSC_EXTERN PetscErrorCode KSPMonitor(KSP,PetscInt,PetscReal);
125: PETSC_EXTERN PetscErrorCode KSPMonitorSet(KSP,PetscErrorCode (*)(KSP,PetscInt,PetscReal,void*),void*,PetscErrorCode (*)(void**));
126: PETSC_EXTERN PetscErrorCode KSPMonitorCancel(KSP);
127: PETSC_EXTERN PetscErrorCode KSPGetMonitorContext(KSP,void**);
128: PETSC_EXTERN PetscErrorCode KSPGetResidualHistory(KSP,PetscReal*[],PetscInt*);
129: PETSC_EXTERN PetscErrorCode KSPSetResidualHistory(KSP,PetscReal[],PetscInt,PetscBool );

131: PETSC_EXTERN PetscErrorCode KSPBuildSolutionDefault(KSP,Vec,Vec*);
132: PETSC_EXTERN PetscErrorCode KSPBuildResidualDefault(KSP,Vec,Vec,Vec*);
133: PETSC_EXTERN PetscErrorCode KSPDestroyDefault(KSP);
134: PETSC_EXTERN PetscErrorCode KSPSetWorkVecs(KSP,PetscInt);

136: PETSC_EXTERN PetscErrorCode PCKSPGetKSP(PC,KSP*);
137: PETSC_EXTERN PetscErrorCode PCBJacobiGetSubKSP(PC,PetscInt*,PetscInt*,KSP*[]);
138: PETSC_EXTERN PetscErrorCode PCASMGetSubKSP(PC,PetscInt*,PetscInt*,KSP*[]);
139: PETSC_EXTERN PetscErrorCode PCGASMGetSubKSP(PC,PetscInt*,PetscInt*,KSP*[]);
140: PETSC_EXTERN PetscErrorCode PCFieldSplitGetSubKSP(PC,PetscInt*,KSP*[]);
141: PETSC_EXTERN PetscErrorCode PCMGGetSmoother(PC,PetscInt,KSP*);
142: PETSC_EXTERN PetscErrorCode PCMGGetSmootherDown(PC,PetscInt,KSP*);
143: PETSC_EXTERN PetscErrorCode PCMGGetSmootherUp(PC,PetscInt,KSP*);
144: PETSC_EXTERN PetscErrorCode PCMGGetCoarseSolve(PC,KSP*);
145: PETSC_EXTERN PetscErrorCode PCGalerkinGetKSP(PC,KSP*);

147: PETSC_EXTERN PetscErrorCode KSPBuildSolution(KSP,Vec,Vec*);
148: PETSC_EXTERN PetscErrorCode KSPBuildResidual(KSP,Vec,Vec,Vec*);

150: PETSC_EXTERN PetscErrorCode KSPRichardsonSetScale(KSP,PetscReal);
151: PETSC_EXTERN PetscErrorCode KSPRichardsonSetSelfScale(KSP,PetscBool );
152: PETSC_EXTERN PetscErrorCode KSPChebyshevSetEigenvalues(KSP,PetscReal,PetscReal);
153: PETSC_EXTERN PetscErrorCode KSPChebyshevEstEigSet(KSP,PetscReal,PetscReal,PetscReal,PetscReal);
154: PETSC_EXTERN PetscErrorCode KSPChebyshevEstEigSetUseNoisy(KSP,PetscBool);
155: PETSC_EXTERN PetscErrorCode KSPChebyshevEstEigGetKSP(KSP,KSP*);
156: PETSC_EXTERN PetscErrorCode KSPComputeExtremeSingularValues(KSP,PetscReal*,PetscReal*);
157: PETSC_EXTERN PetscErrorCode KSPComputeEigenvalues(KSP,PetscInt,PetscReal[],PetscReal[],PetscInt*);
158: PETSC_EXTERN PetscErrorCode KSPComputeEigenvaluesExplicitly(KSP,PetscInt,PetscReal[],PetscReal[]);
159: PETSC_EXTERN PetscErrorCode KSPComputeRitz(KSP,PetscBool,PetscBool,PetscInt*,Vec[],PetscReal[],PetscReal[]);

161: /*E

163:   KSPFCDTruncationType - Define how stored directions are used to orthogonalize in flexible conjugate directions (FCD) methods

165:   KSP_FCD_TRUNC_TYPE_STANDARD uses all (up to mmax) stored directions
166:   KSP_FCD_TRUNC_TYPE_NOTAY uses the last max(1,mod(i,mmax)) stored directions at iteration i=0,1..

168:    Level: intermediate
169: .seealso : KSPFCG,KSPPIPEFCG,KSPPIPEGCR,KSPFCGSetTruncationType(),KSPFCGGetTruncationType()

171: E*/
172: typedef enum {KSP_FCD_TRUNC_TYPE_STANDARD,KSP_FCD_TRUNC_TYPE_NOTAY} KSPFCDTruncationType;
173: PETSC_EXTERN const char *const KSPFCDTruncationTypes[];

175: PETSC_EXTERN PetscErrorCode KSPFCGSetMmax(KSP,PetscInt);
176: PETSC_EXTERN PetscErrorCode KSPFCGGetMmax(KSP,PetscInt*);
177: PETSC_EXTERN PetscErrorCode KSPFCGSetNprealloc(KSP,PetscInt);
178: PETSC_EXTERN PetscErrorCode KSPFCGGetNprealloc(KSP,PetscInt*);
179: PETSC_EXTERN PetscErrorCode KSPFCGSetTruncationType(KSP,KSPFCDTruncationType);
180: PETSC_EXTERN PetscErrorCode KSPFCGGetTruncationType(KSP,KSPFCDTruncationType*);

182: PETSC_EXTERN PetscErrorCode KSPPIPEFCGSetMmax(KSP,PetscInt);
183: PETSC_EXTERN PetscErrorCode KSPPIPEFCGGetMmax(KSP,PetscInt*);
184: PETSC_EXTERN PetscErrorCode KSPPIPEFCGSetNprealloc(KSP,PetscInt);
185: PETSC_EXTERN PetscErrorCode KSPPIPEFCGGetNprealloc(KSP,PetscInt*);
186: PETSC_EXTERN PetscErrorCode KSPPIPEFCGSetTruncationType(KSP,KSPFCDTruncationType);
187: PETSC_EXTERN PetscErrorCode KSPPIPEFCGGetTruncationType(KSP,KSPFCDTruncationType*);

189: PETSC_EXTERN PetscErrorCode KSPPIPEGCRSetMmax(KSP,PetscInt);
190: PETSC_EXTERN PetscErrorCode KSPPIPEGCRGetMmax(KSP,PetscInt*);
191: PETSC_EXTERN PetscErrorCode KSPPIPEGCRSetNprealloc(KSP,PetscInt);
192: PETSC_EXTERN PetscErrorCode KSPPIPEGCRGetNprealloc(KSP,PetscInt*);
193: PETSC_EXTERN PetscErrorCode KSPPIPEGCRSetTruncationType(KSP,KSPFCDTruncationType);
194: PETSC_EXTERN PetscErrorCode KSPPIPEGCRGetTruncationType(KSP,KSPFCDTruncationType*);
195: PETSC_EXTERN PetscErrorCode KSPPIPEGCRSetUnrollW(KSP,PetscBool);
196: PETSC_EXTERN PetscErrorCode KSPPIPEGCRGetUnrollW(KSP,PetscBool*);

198: PETSC_EXTERN PetscErrorCode KSPGMRESSetRestart(KSP, PetscInt);
199: PETSC_EXTERN PetscErrorCode KSPGMRESGetRestart(KSP, PetscInt*);
200: PETSC_EXTERN PetscErrorCode KSPGMRESSetHapTol(KSP,PetscReal);

202: PETSC_EXTERN PetscErrorCode KSPGMRESSetPreAllocateVectors(KSP);
203: PETSC_EXTERN PetscErrorCode KSPGMRESSetOrthogonalization(KSP,PetscErrorCode (*)(KSP,PetscInt));
204: PETSC_EXTERN PetscErrorCode KSPGMRESGetOrthogonalization(KSP,PetscErrorCode (**)(KSP,PetscInt));
205: PETSC_EXTERN PetscErrorCode KSPGMRESModifiedGramSchmidtOrthogonalization(KSP,PetscInt);
206: PETSC_EXTERN PetscErrorCode KSPGMRESClassicalGramSchmidtOrthogonalization(KSP,PetscInt);

208: PETSC_EXTERN PetscErrorCode KSPLGMRESSetAugDim(KSP,PetscInt);
209: PETSC_EXTERN PetscErrorCode KSPLGMRESSetConstant(KSP);

211: PETSC_EXTERN PetscErrorCode KSPPIPEFGMRESSetShift(KSP,PetscScalar);

213: PETSC_EXTERN PetscErrorCode KSPGCRSetRestart(KSP,PetscInt);
214: PETSC_EXTERN PetscErrorCode KSPGCRGetRestart(KSP,PetscInt*);
215: PETSC_EXTERN PetscErrorCode KSPGCRSetModifyPC(KSP,PetscErrorCode (*)(KSP,PetscInt,PetscReal,void*),void*,PetscErrorCode(*)(void*));

217: PETSC_EXTERN PetscErrorCode KSPFETIDPGetInnerBDDC(KSP,PC*);
218: PETSC_EXTERN PetscErrorCode KSPFETIDPSetInnerBDDC(KSP,PC);
219: PETSC_EXTERN PetscErrorCode KSPFETIDPGetInnerKSP(KSP,KSP*);
220: PETSC_EXTERN PetscErrorCode KSPFETIDPSetPressureOperator(KSP,Mat);
221: /*E
222:     KSPGMRESCGSRefinementType - How the classical (unmodified) Gram-Schmidt is performed.

224:    Level: advanced

226: .seealso: KSPGMRESClassicalGramSchmidtOrthogonalization(), KSPGMRESSetOrthogonalization(), KSPGMRESGetOrthogonalization(),
227:           KSPGMRESSetCGSRefinementType(), KSPGMRESGetCGSRefinementType(), KSPGMRESModifiedGramSchmidtOrthogonalization()

229: E*/
230: typedef enum {KSP_GMRES_CGS_REFINE_NEVER, KSP_GMRES_CGS_REFINE_IFNEEDED, KSP_GMRES_CGS_REFINE_ALWAYS} KSPGMRESCGSRefinementType;
231: PETSC_EXTERN const char *const KSPGMRESCGSRefinementTypes[];
232: /*MC
233:     KSP_GMRES_CGS_REFINE_NEVER - Do the classical (unmodified) Gram-Schmidt process

235:    Level: advanced

237:    Note: Possible unstable, but the fastest to compute

239: .seealso: KSPGMRESClassicalGramSchmidtOrthogonalization(), KSPGMRESSetOrthogonalization(), KSPGMRESGetOrthogonalization(),
240:           KSPGMRESSetCGSRefinementType(), KSPGMRESGetCGSRefinementType(), KSP_GMRES_CGS_REFINE_IFNEEDED, KSP_GMRES_CGS_REFINE_ALWAYS,
241:           KSPGMRESModifiedGramSchmidtOrthogonalization()
242: M*/

244: /*MC
245:     KSP_GMRES_CGS_REFINE_IFNEEDED - Do the classical (unmodified) Gram-Schmidt process and one step of
246:           iterative refinement if an estimate of the orthogonality of the resulting vectors indicates
247:           poor orthogonality.

249:    Level: advanced

251:    Note: This is slower than KSP_GMRES_CGS_REFINE_NEVER because it requires an extra norm computation to
252:      estimate the orthogonality but is more stable.

254: .seealso: KSPGMRESClassicalGramSchmidtOrthogonalization(), KSPGMRESSetOrthogonalization(), KSPGMRESGetOrthogonalization(),
255:           KSPGMRESSetCGSRefinementType(), KSPGMRESGetCGSRefinementType(), KSP_GMRES_CGS_REFINE_NEVER, KSP_GMRES_CGS_REFINE_ALWAYS,
256:           KSPGMRESModifiedGramSchmidtOrthogonalization()
257: M*/

259: /*MC
260:     KSP_GMRES_CGS_REFINE_NEVER - Do two steps of the classical (unmodified) Gram-Schmidt process.

262:    Level: advanced

264:    Note: This is roughly twice the cost of KSP_GMRES_CGS_REFINE_NEVER because it performs the process twice
265:      but it saves the extra norm calculation needed by KSP_GMRES_CGS_REFINE_IFNEEDED.

267:         You should only use this if you absolutely know that the iterative refinement is needed.

269: .seealso: KSPGMRESClassicalGramSchmidtOrthogonalization(), KSPGMRESSetOrthogonalization(), KSPGMRESGetOrthogonalization(),
270:           KSPGMRESSetCGSRefinementType(), KSPGMRESGetCGSRefinementType(), KSP_GMRES_CGS_REFINE_IFNEEDED, KSP_GMRES_CGS_REFINE_ALWAYS,
271:           KSPGMRESModifiedGramSchmidtOrthogonalization()
272: M*/

274: PETSC_EXTERN PetscErrorCode KSPGMRESSetCGSRefinementType(KSP,KSPGMRESCGSRefinementType);
275: PETSC_EXTERN PetscErrorCode KSPGMRESGetCGSRefinementType(KSP,KSPGMRESCGSRefinementType*);

277: PETSC_EXTERN PetscErrorCode KSPFGMRESModifyPCNoChange(KSP,PetscInt,PetscInt,PetscReal,void*);
278: PETSC_EXTERN PetscErrorCode KSPFGMRESModifyPCKSP(KSP,PetscInt,PetscInt,PetscReal,void*);
279: PETSC_EXTERN PetscErrorCode KSPFGMRESSetModifyPC(KSP,PetscErrorCode (*)(KSP,PetscInt,PetscInt,PetscReal,void*),void*,PetscErrorCode(*)(void*));

281: PETSC_EXTERN PetscErrorCode KSPQCGSetTrustRegionRadius(KSP,PetscReal);
282: PETSC_EXTERN PetscErrorCode KSPQCGGetQuadratic(KSP,PetscReal*);
283: PETSC_EXTERN PetscErrorCode KSPQCGGetTrialStepNorm(KSP,PetscReal*);

285: PETSC_EXTERN PetscErrorCode KSPBCGSLSetXRes(KSP,PetscReal);
286: PETSC_EXTERN PetscErrorCode KSPBCGSLSetPol(KSP,PetscBool );
287: PETSC_EXTERN PetscErrorCode KSPBCGSLSetEll(KSP,PetscInt);
288: PETSC_EXTERN PetscErrorCode KSPBCGSLSetUsePseudoinverse(KSP,PetscBool);

290: PETSC_EXTERN PetscErrorCode KSPSetFromOptions(KSP);
291: PETSC_EXTERN PetscErrorCode KSPAddOptionsChecker(PetscErrorCode (*)(KSP));

293: PETSC_EXTERN PetscErrorCode KSPMonitorSingularValue(KSP,PetscInt,PetscReal,PetscViewerAndFormat*);
294: PETSC_EXTERN PetscErrorCode KSPMonitorDefault(KSP,PetscInt,PetscReal,PetscViewerAndFormat*);
295: PETSC_EXTERN PetscErrorCode KSPLSQRMonitorDefault(KSP,PetscInt,PetscReal,PetscViewerAndFormat*);
296: PETSC_EXTERN PetscErrorCode KSPMonitorRange(KSP,PetscInt,PetscReal,PetscViewerAndFormat*);
297: PETSC_EXTERN PetscErrorCode KSPMonitorDynamicTolerance(KSP ksp,PetscInt its,PetscReal fnorm,void *dummy);
298: PETSC_EXTERN PetscErrorCode KSPMonitorDynamicToleranceDestroy(void **dummy);
299: PETSC_EXTERN PetscErrorCode KSPMonitorTrueResidualNorm(KSP,PetscInt,PetscReal,PetscViewerAndFormat*);
300: PETSC_EXTERN PetscErrorCode KSPMonitorTrueResidualMaxNorm(KSP,PetscInt,PetscReal,PetscViewerAndFormat*);
301: PETSC_EXTERN PetscErrorCode KSPMonitorDefaultShort(KSP,PetscInt,PetscReal,PetscViewerAndFormat*);
302: PETSC_EXTERN PetscErrorCode KSPMonitorSolution(KSP,PetscInt,PetscReal,PetscViewerAndFormat*);
303: PETSC_EXTERN PetscErrorCode KSPMonitorSAWs(KSP,PetscInt,PetscReal,void*);
304: PETSC_EXTERN PetscErrorCode KSPMonitorSAWsCreate(KSP,void**);
305: PETSC_EXTERN PetscErrorCode KSPMonitorSAWsDestroy(void**);
306: PETSC_EXTERN PetscErrorCode KSPGMRESMonitorKrylov(KSP,PetscInt,PetscReal,void*);
307: PETSC_EXTERN PetscErrorCode KSPMonitorSetFromOptions(KSP,const char[],const char[],const char [],PetscErrorCode (*)(KSP,PetscInt,PetscReal,PetscViewerAndFormat*));

309: PETSC_EXTERN PetscErrorCode KSPUnwindPreconditioner(KSP,Vec,Vec);
310: PETSC_EXTERN PetscErrorCode KSPInitialResidual(KSP,Vec,Vec,Vec,Vec,Vec);

312: PETSC_EXTERN PetscErrorCode KSPSetOperators(KSP,Mat,Mat);
313: PETSC_EXTERN PetscErrorCode KSPGetOperators(KSP,Mat*,Mat*);
314: PETSC_EXTERN PetscErrorCode KSPGetOperatorsSet(KSP,PetscBool*,PetscBool*);
315: PETSC_EXTERN PetscErrorCode KSPSetOptionsPrefix(KSP,const char[]);
316: PETSC_EXTERN PetscErrorCode KSPAppendOptionsPrefix(KSP,const char[]);
317: PETSC_EXTERN PetscErrorCode KSPGetOptionsPrefix(KSP,const char*[]);
318: PETSC_EXTERN PetscErrorCode KSPSetTabLevel(KSP,PetscInt);
319: PETSC_EXTERN PetscErrorCode KSPGetTabLevel(KSP,PetscInt*);

321: PETSC_EXTERN PetscErrorCode KSPSetDiagonalScale(KSP,PetscBool );
322: PETSC_EXTERN PetscErrorCode KSPGetDiagonalScale(KSP,PetscBool*);
323: PETSC_EXTERN PetscErrorCode KSPSetDiagonalScaleFix(KSP,PetscBool );
324: PETSC_EXTERN PetscErrorCode KSPGetDiagonalScaleFix(KSP,PetscBool*);

326: PETSC_EXTERN PetscErrorCode KSPView(KSP,PetscViewer);
327: PETSC_EXTERN PetscErrorCode KSPLoad(KSP,PetscViewer);
328: PETSC_STATIC_INLINE PetscErrorCode KSPViewFromOptions(KSP A,PetscObject obj,const char name[]) {return PetscObjectViewFromOptions((PetscObject)A,obj,name);}
329: PETSC_EXTERN PetscErrorCode KSPReasonView(KSP,PetscViewer);
330: PETSC_EXTERN PetscErrorCode KSPReasonViewFromOptions(KSP);

332: #define KSP_FILE_CLASSID 1211223

334: PETSC_EXTERN PetscErrorCode KSPLSQRSetStandardErrorVec(KSP,Vec);
335: PETSC_EXTERN PetscErrorCode KSPLSQRGetStandardErrorVec(KSP,Vec*);
336: PETSC_EXTERN PetscErrorCode KSPLSQRGetArnorm(KSP,PetscReal*,PetscReal*,PetscReal*);

338: PETSC_EXTERN PetscErrorCode PCRedundantGetKSP(PC,KSP*);
339: PETSC_EXTERN PetscErrorCode PCRedistributeGetKSP(PC,KSP*);
340: PETSC_EXTERN PetscErrorCode PCTelescopeGetKSP(PC,KSP*);

342: /*E
343:     KSPNormType - Norm that is passed in the Krylov convergence
344:        test routines.

346:    Level: advanced

348:    Each solver only supports a subset of these and some may support different ones
349:    depending on left or right preconditioning, see KSPSetPCSide()

351:    Notes: this must match petsc/finclude/petscksp.h

353: .seealso: KSPSolve(), KSPGetConvergedReason(), KSPSetNormType(),
354:           KSPSetConvergenceTest(), KSPSetPCSide()
355: E*/
356: typedef enum {KSP_NORM_DEFAULT = -1,KSP_NORM_NONE = 0,KSP_NORM_PRECONDITIONED = 1,KSP_NORM_UNPRECONDITIONED = 2,KSP_NORM_NATURAL = 3} KSPNormType;
357: #define KSP_NORM_MAX (KSP_NORM_NATURAL + 1)
358: PETSC_EXTERN const char *const*const KSPNormTypes;

360: /*MC
361:     KSP_NORM_NONE - Do not compute a norm during the Krylov process. This will
362:           possibly save some computation but means the convergence test cannot
363:           be based on a norm of a residual etc.

365:    Level: advanced

367:     Note: Some Krylov methods need to compute a residual norm (such as GMRES) and then this option is ignored

369: .seealso: KSPNormType, KSPSetNormType(), KSP_NORM_PRECONDITIONED, KSP_NORM_UNPRECONDITIONED, KSP_NORM_NATURAL
370: M*/

372: /*MC
373:     KSP_NORM_PRECONDITIONED - Compute the norm of the preconditioned residual B*(b - A*x), if left preconditioning, and pass that to the
374:        convergence test routine.

376:    Level: advanced

378: .seealso: KSPNormType, KSPSetNormType(), KSP_NORM_NONE, KSP_NORM_UNPRECONDITIONED, KSP_NORM_NATURAL, KSPSetConvergenceTest()
379: M*/

381: /*MC
382:     KSP_NORM_UNPRECONDITIONED - Compute the norm of the true residual (b - A*x) and pass that to the
383:        convergence test routine.

385:    Level: advanced

387: .seealso: KSPNormType, KSPSetNormType(), KSP_NORM_NONE, KSP_NORM_PRECONDITIONED, KSP_NORM_NATURAL, KSPSetConvergenceTest()
388: M*/

390: /*MC
391:     KSP_NORM_NATURAL - Compute the 'natural norm' of residual sqrt((b - A*x)*B*(b - A*x)) and pass that to the
392:        convergence test routine. This is only supported by  KSPCG, KSPCR, KSPCGNE, KSPCGS, KSPFCG, KSPPIPEFCG, KSPPIPEGCR

394:    Level: advanced

396: .seealso: KSPNormType, KSPSetNormType(), KSP_NORM_NONE, KSP_NORM_PRECONDITIONED, KSP_NORM_UNPRECONDITIONED, KSPSetConvergenceTest()
397: M*/

399: PETSC_EXTERN PetscErrorCode KSPSetNormType(KSP,KSPNormType);
400: PETSC_EXTERN PetscErrorCode KSPGetNormType(KSP,KSPNormType*);
401: PETSC_EXTERN PetscErrorCode KSPSetSupportedNorm(KSP ksp,KSPNormType,PCSide,PetscInt);
402: PETSC_EXTERN PetscErrorCode KSPSetCheckNormIteration(KSP,PetscInt);
403: PETSC_EXTERN PetscErrorCode KSPSetLagNorm(KSP,PetscBool);

405: /*E
406:     KSPConvergedReason - reason a Krylov method was said to have converged or diverged

408:    Level: beginner

410:    Notes: See KSPGetConvergedReason() for explanation of each value

412:    Developer notes: this must match petsc/finclude/petscksp.h

414:       The string versions of these are KSPConvergedReasons; if you change
415:       any of the values here also change them that array of names.

417: .seealso: KSPSolve(), KSPGetConvergedReason(), KSPSetTolerances()
418: E*/
419: typedef enum {/* converged */
420:               KSP_CONVERGED_RTOL_NORMAL        =  1,
421:               KSP_CONVERGED_ATOL_NORMAL        =  9,
422:               KSP_CONVERGED_RTOL               =  2,
423:               KSP_CONVERGED_ATOL               =  3,
424:               KSP_CONVERGED_ITS                =  4,
425:               KSP_CONVERGED_CG_NEG_CURVE       =  5,
426:               KSP_CONVERGED_CG_CONSTRAINED     =  6,
427:               KSP_CONVERGED_STEP_LENGTH        =  7,
428:               KSP_CONVERGED_HAPPY_BREAKDOWN    =  8,
429:               /* diverged */
430:               KSP_DIVERGED_NULL                = -2,
431:               KSP_DIVERGED_ITS                 = -3,
432:               KSP_DIVERGED_DTOL                = -4,
433:               KSP_DIVERGED_BREAKDOWN           = -5,
434:               KSP_DIVERGED_BREAKDOWN_BICG      = -6,
435:               KSP_DIVERGED_NONSYMMETRIC        = -7,
436:               KSP_DIVERGED_INDEFINITE_PC       = -8,
437:               KSP_DIVERGED_NANORINF            = -9,
438:               KSP_DIVERGED_INDEFINITE_MAT      = -10,
439:               KSP_DIVERGED_PCSETUP_FAILED      = -11,

441:               KSP_CONVERGED_ITERATING          =  0} KSPConvergedReason;
442: PETSC_EXTERN const char *const*KSPConvergedReasons;

444: /*MC
445:      KSP_CONVERGED_RTOL - norm(r) <= rtol*norm(b)

447:    Level: beginner

449:    See KSPNormType and KSPSetNormType() for possible norms that may be used. By default
450:        for left preconditioning it is the 2-norm of the preconditioned residual, and the
451:        2-norm of the residual for right preconditioning

453: .seealso:  KSPSolve(), KSPGetConvergedReason(), KSPConvergedReason, KSPSetTolerances()

455: M*/

457: /*MC
458:      KSP_CONVERGED_ATOL - norm(r) <= atol

460:    Level: beginner

462:    See KSPNormType and KSPSetNormType() for possible norms that may be used. By default
463:        for left preconditioning it is the 2-norm of the preconditioned residual, and the
464:        2-norm of the residual for right preconditioning

466:    Level: beginner

468: .seealso:  KSPSolve(), KSPGetConvergedReason(), KSPConvergedReason, KSPSetTolerances()

470: M*/

472: /*MC
473:      KSP_DIVERGED_DTOL - norm(r) >= dtol*norm(b)

475:    Level: beginner

477:    See KSPNormType and KSPSetNormType() for possible norms that may be used. By default
478:        for left preconditioning it is the 2-norm of the preconditioned residual, and the
479:        2-norm of the residual for right preconditioning

481:    Level: beginner

483: .seealso:  KSPSolve(), KSPGetConvergedReason(), KSPConvergedReason, KSPSetTolerances()

485: M*/

487: /*MC
488:      KSP_DIVERGED_ITS - Ran out of iterations before any convergence criteria was
489:       reached

491:    Level: beginner

493: .seealso:  KSPSolve(), KSPGetConvergedReason(), KSPConvergedReason, KSPSetTolerances()

495: M*/

497: /*MC
498:      KSP_CONVERGED_ITS - Used by the KSPPREONLY solver after the single iteration of
499:            the preconditioner is applied. Also used when the KSPConvergedSkip() convergence
500:            test routine is set in KSP.

502:    Level: beginner

504: .seealso:  KSPSolve(), KSPGetConvergedReason(), KSPConvergedReason, KSPSetTolerances()

506: M*/

508: /*MC
509:      KSP_DIVERGED_BREAKDOWN - A breakdown in the Krylov method was detected so the
510:           method could not continue to enlarge the Krylov space. Could be due to a singlular matrix or
511:           preconditioner.

513:    Level: beginner

515: .seealso:  KSPSolve(), KSPGetConvergedReason(), KSPConvergedReason, KSPSetTolerances()

517: M*/

519: /*MC
520:      KSP_DIVERGED_BREAKDOWN_BICG - A breakdown in the KSPBICG method was detected so the
521:           method could not continue to enlarge the Krylov space.

523:    Level: beginner

525: .seealso:  KSPSolve(), KSPGetConvergedReason(), KSPConvergedReason, KSPSetTolerances()

527: M*/

529: /*MC
530:      KSP_DIVERGED_NONSYMMETRIC - It appears the operator or preconditioner is not
531:         symmetric and this Krylov method (KSPCG, KSPMINRES, KSPCR) requires symmetry

533:    Level: beginner

535: .seealso:  KSPSolve(), KSPGetConvergedReason(), KSPConvergedReason, KSPSetTolerances()

537: M*/

539: /*MC
540:      KSP_DIVERGED_INDEFINITE_PC - It appears the preconditioner is indefinite (has both
541:         positive and negative eigenvalues) and this Krylov method (KSPCG) requires it to
542:         be positive definite

544:    Level: beginner

546:      Notes: This can happen with the PCICC preconditioner, use -pc_factor_shift_positive_definite to force
547:   the PCICC preconditioner to generate a positive definite preconditioner

549: .seealso:  KSPSolve(), KSPGetConvergedReason(), KSPConvergedReason, KSPSetTolerances()

551: M*/

553: /*MC
554:      KSP_DIVERGED_PCSETUP_FAILED - It was not possible to build the requested preconditioner. This is usually due to a 
555:      zero pivot in a factorization. It can also result from a failure in a subpreconditioner inside a nested preconditioner
556:      such as PCFIELDSPLIT.

558:    Level: beginner

560:     Notes: Run with -ksp_error_if_not_converged to stop the program when the error is detected and print an error message with details.


563: .seealso:  KSPSolve(), KSPGetConvergedReason(), KSPConvergedReason, KSPSetTolerances()

565: M*/

567: /*MC
568:      KSP_CONVERGED_ITERATING - This flag is returned if you call KSPGetConvergedReason()
569:         while the KSPSolve() is still running.

571:    Level: beginner

573: .seealso:  KSPSolve(), KSPGetConvergedReason(), KSPConvergedReason, KSPSetTolerances()

575: M*/

577: PETSC_EXTERN PetscErrorCode KSPSetConvergenceTest(KSP,PetscErrorCode (*)(KSP,PetscInt,PetscReal,KSPConvergedReason*,void*),void*,PetscErrorCode (*)(void*));
578: PETSC_EXTERN PetscErrorCode KSPGetConvergenceContext(KSP,void**);
579: PETSC_EXTERN PetscErrorCode KSPConvergedDefault(KSP,PetscInt,PetscReal,KSPConvergedReason*,void*);
580: PETSC_EXTERN PetscErrorCode KSPConvergedLSQR(KSP,PetscInt,PetscReal,KSPConvergedReason*,void*);
581: PETSC_EXTERN PetscErrorCode KSPConvergedDefaultDestroy(void*);
582: PETSC_EXTERN PetscErrorCode KSPConvergedDefaultCreate(void**);
583: PETSC_EXTERN PetscErrorCode KSPConvergedDefaultSetUIRNorm(KSP);
584: PETSC_EXTERN PetscErrorCode KSPConvergedDefaultSetUMIRNorm(KSP);
585: PETSC_EXTERN PetscErrorCode KSPConvergedSkip(KSP,PetscInt,PetscReal,KSPConvergedReason*,void*);
586: PETSC_EXTERN PetscErrorCode KSPGetConvergedReason(KSP,KSPConvergedReason*);

588: PETSC_DEPRECATED("Use KSPConvergedDefault()") PETSC_STATIC_INLINE void KSPDefaultConverged(void) { /* never called */ }
589: #define KSPDefaultConverged (KSPDefaultConverged, KSPConvergedDefault)
590: PETSC_DEPRECATED("Use KSPConvergedDefaultDestroy()") PETSC_STATIC_INLINE void KSPDefaultConvergedDestroy(void) { /* never called */ }
591: #define KSPDefaultConvergedDestroy (KSPDefaultConvergedDestroy, KSPConvergedDefaultDestroy)
592: PETSC_DEPRECATED("Use KSPConvergedDefaultCreate()") PETSC_STATIC_INLINE void KSPDefaultConvergedCreate(void) { /* never called */ }
593: #define KSPDefaultConvergedCreate (KSPDefaultConvergedCreate, KSPConvergedDefaultCreate)
594: PETSC_DEPRECATED("Use KSPConvergedDefaultSetUIRNorm()") PETSC_STATIC_INLINE void KSPDefaultConvergedSetUIRNorm(void) { /* never called */ }
595: #define KSPDefaultConvergedSetUIRNorm (KSPDefaultConvergedSetUIRNorm, KSPConvergedDefaultSetUIRNorm)
596: PETSC_DEPRECATED("Use KSPConvergedDefaultSetUMIRNorm()") PETSC_STATIC_INLINE void KSPDefaultConvergedSetUMIRNorm(void) { /* never called */ }
597: #define KSPDefaultConvergedSetUMIRNorm (KSPDefaultConvergedSetUMIRNorm, KSPConvergedDefaultSetUMIRNorm)
598: PETSC_DEPRECATED("Use KSPConvergedSkip()") PETSC_STATIC_INLINE void KSPSkipConverged(void) { /* never called */ }
599: #define KSPSkipConverged (KSPSkipConverged, KSPConvergedSkip)

601: PETSC_EXTERN PetscErrorCode KSPComputeExplicitOperator(KSP,Mat*);

603: /*E
604:     KSPCGType - Determines what type of CG to use

606:    Level: beginner

608: .seealso: KSPCGSetType()
609: E*/
610: typedef enum {KSP_CG_SYMMETRIC=0,KSP_CG_HERMITIAN=1} KSPCGType;
611: PETSC_EXTERN const char *const KSPCGTypes[];

613: PETSC_EXTERN PetscErrorCode KSPCGSetType(KSP,KSPCGType);
614: PETSC_EXTERN PetscErrorCode KSPCGUseSingleReduction(KSP,PetscBool );

616: PETSC_EXTERN PetscErrorCode KSPCGSetRadius(KSP,PetscReal);
617: PETSC_EXTERN PetscErrorCode KSPCGGetNormD(KSP,PetscReal*);
618: PETSC_EXTERN PetscErrorCode KSPCGGetObjFcn(KSP,PetscReal*);

620: PETSC_EXTERN PetscErrorCode KSPCGGLTRGetMinEig(KSP,PetscReal*);
621: PETSC_EXTERN PetscErrorCode KSPCGGLTRGetLambda(KSP,PetscReal*);

623: PETSC_EXTERN PetscErrorCode KSPPythonSetType(KSP,const char[]);

625: PETSC_EXTERN PetscErrorCode PCPreSolve(PC,KSP);
626: PETSC_EXTERN PetscErrorCode PCPostSolve(PC,KSP);

628:  #include <petscdrawtypes.h>
629: PETSC_EXTERN PetscErrorCode KSPMonitorLGResidualNormCreate(MPI_Comm,const char[],const char[],int,int,int,int,PetscDrawLG*);
630: PETSC_EXTERN PetscErrorCode KSPMonitorLGResidualNorm(KSP,PetscInt,PetscReal,void*);
631: PETSC_EXTERN PetscErrorCode KSPMonitorLGTrueResidualNormCreate(MPI_Comm,const char[],const char[],int,int,int,int,PetscDrawLG*);
632: PETSC_EXTERN PetscErrorCode KSPMonitorLGTrueResidualNorm(KSP,PetscInt,PetscReal,void*);
633: PETSC_EXTERN PetscErrorCode KSPMonitorLGRange(KSP,PetscInt,PetscReal,void*);

635: PETSC_EXTERN PetscErrorCode PCShellSetPreSolve(PC,PetscErrorCode (*)(PC,KSP,Vec,Vec));
636: PETSC_EXTERN PetscErrorCode PCShellSetPostSolve(PC,PetscErrorCode (*)(PC,KSP,Vec,Vec));

638: /*S
639:      KSPGuess - Abstract PETSc object that manages all initial guess methods in Krylov methods.

641:    Level: beginner

643:   Concepts: Krylov methods

645: .seealso:  KSPCreate(), KSPSetGuessType(), KSPGuessType
646: S*/
647: typedef struct _p_KSPGuess* KSPGuess;
648: /*J
649:     KSPGuessType - String with the name of a PETSc initial guess for Krylov methods.

651:    Level: beginner

653: .seealso: KSPGuess
654: J*/
655: typedef const char* KSPGuessType;
656: #define KSPGUESSFISCHER "fischer"
657: #define KSPGUESSPOD     "pod"
658: PETSC_EXTERN PetscErrorCode KSPSetGuess(KSP,KSPGuess);
659: PETSC_EXTERN PetscErrorCode KSPGetGuess(KSP,KSPGuess*);
660: PETSC_EXTERN PetscErrorCode KSPGuessView(KSPGuess,PetscViewer);
661: PETSC_EXTERN PetscErrorCode KSPGuessDestroy(KSPGuess*);
662: PETSC_EXTERN PetscErrorCode KSPGuessCreate(MPI_Comm,KSPGuess*);
663: PETSC_EXTERN PetscErrorCode KSPGuessSetType(KSPGuess,KSPGuessType);
664: PETSC_EXTERN PetscErrorCode KSPGuessGetType(KSPGuess,KSPGuessType*);
665: PETSC_EXTERN PetscErrorCode KSPGuessSetUp(KSPGuess);
666: PETSC_EXTERN PetscErrorCode KSPGuessUpdate(KSPGuess,Vec,Vec);
667: PETSC_EXTERN PetscErrorCode KSPGuessFormGuess(KSPGuess,Vec,Vec);
668: PETSC_EXTERN PetscErrorCode KSPGuessSetFromOptions(KSPGuess);
669: PETSC_EXTERN PetscErrorCode KSPGuessFischerSetModel(KSPGuess,PetscInt,PetscInt);
670: PETSC_EXTERN PetscErrorCode KSPSetUseFischerGuess(KSP,PetscInt,PetscInt);
671: PETSC_EXTERN PetscErrorCode KSPSetInitialGuessKnoll(KSP,PetscBool);
672: PETSC_EXTERN PetscErrorCode KSPGetInitialGuessKnoll(KSP,PetscBool*);

674: /*E
675:     MatSchurComplementAinvType - Determines how to approximate the inverse of the (0,0) block in Schur complement preconditioning matrix assembly routines

677:     Level: intermediate

679: .seealso: MatSchurComplementGetAinvType(), MatSchurComplementSetAinvType(), MatSchurComplementGetPmat(), MatGetSchurComplement(), MatCreateSchurComplementPmat()
680: E*/
681: typedef enum {MAT_SCHUR_COMPLEMENT_AINV_DIAG, MAT_SCHUR_COMPLEMENT_AINV_LUMP} MatSchurComplementAinvType;
682: PETSC_EXTERN const char *const MatSchurComplementAinvTypes[];

684: PETSC_EXTERN PetscErrorCode MatCreateSchurComplement(Mat,Mat,Mat,Mat,Mat,Mat*);
685: PETSC_EXTERN PetscErrorCode MatSchurComplementGetKSP(Mat,KSP*);
686: PETSC_EXTERN PetscErrorCode MatSchurComplementSetKSP(Mat,KSP);
687: PETSC_EXTERN PetscErrorCode MatSchurComplementSetSubMatrices(Mat,Mat,Mat,Mat,Mat,Mat);
688: PETSC_EXTERN PetscErrorCode MatSchurComplementUpdateSubMatrices(Mat,Mat,Mat,Mat,Mat,Mat);
689: PETSC_EXTERN PetscErrorCode MatSchurComplementGetSubMatrices(Mat,Mat*,Mat*,Mat*,Mat*,Mat*);
690: PETSC_EXTERN PetscErrorCode MatSchurComplementSetAinvType(Mat,MatSchurComplementAinvType);
691: PETSC_EXTERN PetscErrorCode MatSchurComplementGetAinvType(Mat,MatSchurComplementAinvType*);
692: PETSC_EXTERN PetscErrorCode MatSchurComplementGetPmat(Mat,MatReuse,Mat*);
693: PETSC_EXTERN PetscErrorCode MatSchurComplementComputeExplicitOperator(Mat,Mat*);
694: PETSC_EXTERN PetscErrorCode MatGetSchurComplement(Mat,IS,IS,IS,IS,MatReuse,Mat*,MatSchurComplementAinvType,MatReuse,Mat*);
695: PETSC_EXTERN PetscErrorCode MatCreateSchurComplementPmat(Mat,Mat,Mat,Mat,MatSchurComplementAinvType,MatReuse,Mat*);

697: PETSC_EXTERN PetscErrorCode KSPSetDM(KSP,DM);
698: PETSC_EXTERN PetscErrorCode KSPSetDMActive(KSP,PetscBool );
699: PETSC_EXTERN PetscErrorCode KSPGetDM(KSP,DM*);
700: PETSC_EXTERN PetscErrorCode KSPSetApplicationContext(KSP,void*);
701: PETSC_EXTERN PetscErrorCode KSPGetApplicationContext(KSP,void*);
702: PETSC_EXTERN PetscErrorCode KSPSetComputeRHS(KSP,PetscErrorCode (*func)(KSP,Vec,void*),void*);
703: PETSC_EXTERN PetscErrorCode KSPSetComputeOperators(KSP,PetscErrorCode(*)(KSP,Mat,Mat,void*),void*);
704: PETSC_EXTERN PetscErrorCode KSPSetComputeInitialGuess(KSP,PetscErrorCode(*)(KSP,Vec,void*),void*);
705: PETSC_EXTERN PetscErrorCode DMKSPSetComputeOperators(DM,PetscErrorCode(*)(KSP,Mat,Mat,void*),void*);
706: PETSC_EXTERN PetscErrorCode DMKSPGetComputeOperators(DM,PetscErrorCode(**)(KSP,Mat,Mat,void*),void*);
707: PETSC_EXTERN PetscErrorCode DMKSPSetComputeRHS(DM,PetscErrorCode(*)(KSP,Vec,void*),void*);
708: PETSC_EXTERN PetscErrorCode DMKSPGetComputeRHS(DM,PetscErrorCode(**)(KSP,Vec,void*),void*);
709: PETSC_EXTERN PetscErrorCode DMKSPSetComputeInitialGuess(DM,PetscErrorCode(*)(KSP,Vec,void*),void*);
710: PETSC_EXTERN PetscErrorCode DMKSPGetComputeInitialGuess(DM,PetscErrorCode(**)(KSP,Vec,void*),void*);

712: PETSC_EXTERN PetscErrorCode DMGlobalToLocalSolve(DM,Vec,Vec);
713: PETSC_EXTERN PetscErrorCode DMProjectField(DM, PetscReal, Vec,
714:                                            void (**)(PetscInt, PetscInt, PetscInt,
715:                                                      const PetscInt[], const PetscInt[], const PetscScalar[], const PetscScalar[], const PetscScalar[],
716:                                                      const PetscInt[], const PetscInt[], const PetscScalar[], const PetscScalar[], const PetscScalar[],
717:                                                      PetscReal, const PetscReal [], PetscInt, const PetscScalar[], PetscScalar []), InsertMode, Vec);
718: #endif