Actual source code: petscksp.h

petsc-master 2019-08-18
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  1: /*
  2:    Defines the interface functions for the Krylov subspace accelerators.
  3: */
  4: #ifndef PETSCKSP_H
  5: #define 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:         Notes:
 17:     When a direct solver is used but no Krylov solver is used the KSP object is still used by with a
 18:        KSPType of KSPPREONLY (meaning application of the preconditioner is only used as the linear solver).

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

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

 27:    Level: beginner

 29: .seealso: KSPSetType(), KSP, KSPRegister(), KSPCreate(), KSPSetFromOptions()
 30: J*/
 31: typedef const char* KSPType;
 32: #define KSPRICHARDSON "richardson"
 33: #define KSPCHEBYSHEV  "chebyshev"
 34: #define KSPCG         "cg"
 35: #define KSPGROPPCG    "groppcg"
 36: #define KSPPIPECG     "pipecg"
 37: #define KSPPIPECGRR   "pipecgrr"
 38: #define KSPPIPELCG     "pipelcg"
 39: #define   KSPCGNE       "cgne"
 40: #define   KSPNASH       "nash"
 41: #define   KSPSTCG       "stcg"
 42: #define   KSPGLTR       "gltr"
 43: #define     KSPCGNASH  PETSC_DEPRECATED_MACRO("GCC warning \"KSPCGNASH macro is deprecated use KSPNASH (since version 3.11)\"")  "nash"
 44: #define     KSPCGSTCG  PETSC_DEPRECATED_MACRO("GCC warning \"KSPCGSTCG macro is deprecated use KSPSTCG (since version 3.11)\"")  "stcg"
 45: #define     KSPCGGLTR  PETSC_DEPRECATED_MACRO("GCC warning \"KSPCGGLTR macro is deprecated use KSPSGLTR (since version 3.11)\"") "gltr"
 46: #define KSPFCG        "fcg"
 47: #define KSPPIPEFCG    "pipefcg"
 48: #define KSPGMRES      "gmres"
 49: #define KSPPIPEFGMRES "pipefgmres"
 50: #define   KSPFGMRES     "fgmres"
 51: #define   KSPLGMRES     "lgmres"
 52: #define   KSPDGMRES     "dgmres"
 53: #define   KSPPGMRES     "pgmres"
 54: #define KSPTCQMR      "tcqmr"
 55: #define KSPBCGS       "bcgs"
 56: #define   KSPIBCGS      "ibcgs"
 57: #define   KSPFBCGS      "fbcgs"
 58: #define   KSPFBCGSR     "fbcgsr"
 59: #define   KSPBCGSL      "bcgsl"
 60: #define   KSPPIPEBCGS   "pipebcgs"
 61: #define KSPCGS        "cgs"
 62: #define KSPTFQMR      "tfqmr"
 63: #define KSPCR         "cr"
 64: #define KSPPIPECR     "pipecr"
 65: #define KSPLSQR       "lsqr"
 66: #define KSPPREONLY    "preonly"
 67: #define KSPQCG        "qcg"
 68: #define KSPBICG       "bicg"
 69: #define KSPMINRES     "minres"
 70: #define KSPSYMMLQ     "symmlq"
 71: #define KSPLCD        "lcd"
 72: #define KSPPYTHON     "python"
 73: #define KSPGCR        "gcr"
 74: #define KSPPIPEGCR    "pipegcr"
 75: #define KSPTSIRM      "tsirm"
 76: #define KSPCGLS       "cgls"
 77: #define KSPFETIDP     "fetidp"

 79: /* Logging support */
 80: PETSC_EXTERN PetscClassId KSP_CLASSID;
 81: PETSC_EXTERN PetscClassId KSPGUESS_CLASSID;
 82: PETSC_EXTERN PetscClassId DMKSP_CLASSID;

 84: PETSC_EXTERN PetscErrorCode KSPCreate(MPI_Comm,KSP*);
 85: PETSC_EXTERN PetscErrorCode KSPSetType(KSP,KSPType);
 86: PETSC_EXTERN PetscErrorCode KSPGetType(KSP,KSPType*);
 87: PETSC_EXTERN PetscErrorCode KSPSetUp(KSP);
 88: PETSC_EXTERN PetscErrorCode KSPSetUpOnBlocks(KSP);
 89: PETSC_EXTERN PetscErrorCode KSPSolve(KSP,Vec,Vec);
 90: PETSC_EXTERN PetscErrorCode KSPSolveTranspose(KSP,Vec,Vec);
 91: PETSC_EXTERN PetscErrorCode KSPReset(KSP);
 92: PETSC_EXTERN PetscErrorCode KSPResetViewers(KSP);
 93: PETSC_EXTERN PetscErrorCode KSPDestroy(KSP*);
 94: PETSC_EXTERN PetscErrorCode KSPSetReusePreconditioner(KSP,PetscBool);
 95: PETSC_EXTERN PetscErrorCode KSPSetSkipPCSetFromOptions(KSP,PetscBool);
 96: PETSC_EXTERN PetscErrorCode KSPCheckSolve(KSP,PC,Vec);

 98: PETSC_EXTERN PetscFunctionList KSPList;
 99: PETSC_EXTERN PetscFunctionList KSPGuessList;
100: PETSC_EXTERN PetscErrorCode KSPRegister(const char[],PetscErrorCode (*)(KSP));

102: PETSC_EXTERN PetscErrorCode KSPSetPCSide(KSP,PCSide);
103: PETSC_EXTERN PetscErrorCode KSPGetPCSide(KSP,PCSide*);
104: PETSC_EXTERN PetscErrorCode KSPSetTolerances(KSP,PetscReal,PetscReal,PetscReal,PetscInt);
105: PETSC_EXTERN PetscErrorCode KSPGetTolerances(KSP,PetscReal*,PetscReal*,PetscReal*,PetscInt*);
106: PETSC_EXTERN PetscErrorCode KSPSetInitialGuessNonzero(KSP,PetscBool);
107: PETSC_EXTERN PetscErrorCode KSPGetInitialGuessNonzero(KSP,PetscBool*);
108: PETSC_EXTERN PetscErrorCode KSPSetErrorIfNotConverged(KSP,PetscBool);
109: PETSC_EXTERN PetscErrorCode KSPGetErrorIfNotConverged(KSP,PetscBool*);
110: PETSC_EXTERN PetscErrorCode KSPSetComputeEigenvalues(KSP,PetscBool);
111: PETSC_EXTERN PetscErrorCode KSPSetComputeRitz(KSP,PetscBool);
112: PETSC_EXTERN PetscErrorCode KSPGetComputeEigenvalues(KSP,PetscBool*);
113: PETSC_EXTERN PetscErrorCode KSPSetComputeSingularValues(KSP,PetscBool);
114: PETSC_EXTERN PetscErrorCode KSPGetComputeSingularValues(KSP,PetscBool*);
115: PETSC_EXTERN PetscErrorCode KSPGetRhs(KSP,Vec*);
116: PETSC_EXTERN PetscErrorCode KSPGetSolution(KSP,Vec*);
117: PETSC_EXTERN PetscErrorCode KSPGetResidualNorm(KSP,PetscReal*);
118: PETSC_EXTERN PetscErrorCode KSPGetIterationNumber(KSP,PetscInt*);
119: PETSC_EXTERN PetscErrorCode KSPGetTotalIterations(KSP,PetscInt*);
120: PETSC_EXTERN PetscErrorCode KSPCreateVecs(KSP,PetscInt,Vec**,PetscInt,Vec**);
121: PETSC_DEPRECATED_FUNCTION("Use KSPCreateVecs() (since version 3.6)") PETSC_STATIC_INLINE PetscErrorCode KSPGetVecs(KSP ksp,PetscInt n,Vec **x,PetscInt m,Vec **y) {return KSPCreateVecs(ksp,n,x,m,y);}

123: PETSC_EXTERN PetscErrorCode KSPSetPreSolve(KSP,PetscErrorCode (*)(KSP,Vec,Vec,void*),void*);
124: PETSC_EXTERN PetscErrorCode KSPSetPostSolve(KSP,PetscErrorCode (*)(KSP,Vec,Vec,void*),void*);

126: PETSC_EXTERN PetscErrorCode KSPSetPC(KSP,PC);
127: PETSC_EXTERN PetscErrorCode KSPGetPC(KSP,PC*);

129: PETSC_EXTERN PetscErrorCode KSPMonitor(KSP,PetscInt,PetscReal);
130: PETSC_EXTERN PetscErrorCode KSPMonitorSet(KSP,PetscErrorCode (*)(KSP,PetscInt,PetscReal,void*),void*,PetscErrorCode (*)(void**));
131: PETSC_EXTERN PetscErrorCode KSPMonitorCancel(KSP);
132: PETSC_EXTERN PetscErrorCode KSPGetMonitorContext(KSP,void**);
133: PETSC_EXTERN PetscErrorCode KSPGetResidualHistory(KSP,PetscReal*[],PetscInt*);
134: PETSC_EXTERN PetscErrorCode KSPSetResidualHistory(KSP,PetscReal[],PetscInt,PetscBool );

136: PETSC_EXTERN PetscErrorCode KSPBuildSolutionDefault(KSP,Vec,Vec*);
137: PETSC_EXTERN PetscErrorCode KSPBuildResidualDefault(KSP,Vec,Vec,Vec*);
138: PETSC_EXTERN PetscErrorCode KSPDestroyDefault(KSP);
139: PETSC_EXTERN PetscErrorCode KSPSetWorkVecs(KSP,PetscInt);

141: PETSC_EXTERN PetscErrorCode PCKSPGetKSP(PC,KSP*);
142: PETSC_EXTERN PetscErrorCode PCKSPSetKSP(PC,KSP);
143: PETSC_EXTERN PetscErrorCode PCBJacobiGetSubKSP(PC,PetscInt*,PetscInt*,KSP*[]);
144: PETSC_EXTERN PetscErrorCode PCASMGetSubKSP(PC,PetscInt*,PetscInt*,KSP*[]);
145: PETSC_EXTERN PetscErrorCode PCGASMGetSubKSP(PC,PetscInt*,PetscInt*,KSP*[]);
146: PETSC_EXTERN PetscErrorCode PCFieldSplitGetSubKSP(PC,PetscInt*,KSP*[]);
147: PETSC_EXTERN PetscErrorCode PCFieldSplitSchurGetSubKSP(PC,PetscInt*,KSP*[]);
148: PETSC_EXTERN PetscErrorCode PCMGGetSmoother(PC,PetscInt,KSP*);
149: PETSC_EXTERN PetscErrorCode PCMGGetSmootherDown(PC,PetscInt,KSP*);
150: PETSC_EXTERN PetscErrorCode PCMGGetSmootherUp(PC,PetscInt,KSP*);
151: PETSC_EXTERN PetscErrorCode PCMGGetCoarseSolve(PC,KSP*);
152: PETSC_EXTERN PetscErrorCode PCGalerkinGetKSP(PC,KSP*);
153: PETSC_EXTERN PetscErrorCode PCDeflationGetCoarseKSP(PC,KSP*);

155: PETSC_EXTERN PetscErrorCode KSPBuildSolution(KSP,Vec,Vec*);
156: PETSC_EXTERN PetscErrorCode KSPBuildResidual(KSP,Vec,Vec,Vec*);

158: PETSC_EXTERN PetscErrorCode KSPRichardsonSetScale(KSP,PetscReal);
159: PETSC_EXTERN PetscErrorCode KSPRichardsonSetSelfScale(KSP,PetscBool );
160: PETSC_EXTERN PetscErrorCode KSPChebyshevSetEigenvalues(KSP,PetscReal,PetscReal);
161: PETSC_EXTERN PetscErrorCode KSPChebyshevEstEigSet(KSP,PetscReal,PetscReal,PetscReal,PetscReal);
162: PETSC_EXTERN PetscErrorCode KSPChebyshevEstEigSetUseNoisy(KSP,PetscBool);
163: PETSC_EXTERN PetscErrorCode KSPChebyshevEstEigGetKSP(KSP,KSP*);
164: PETSC_EXTERN PetscErrorCode KSPComputeExtremeSingularValues(KSP,PetscReal*,PetscReal*);
165: PETSC_EXTERN PetscErrorCode KSPComputeEigenvalues(KSP,PetscInt,PetscReal[],PetscReal[],PetscInt*);
166: PETSC_EXTERN PetscErrorCode KSPComputeEigenvaluesExplicitly(KSP,PetscInt,PetscReal[],PetscReal[]);
167: PETSC_EXTERN PetscErrorCode KSPComputeRitz(KSP,PetscBool,PetscBool,PetscInt*,Vec[],PetscReal[],PetscReal[]);

169: /*E

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

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

176:    Level: intermediate
177: .seealso : KSPFCG,KSPPIPEFCG,KSPPIPEGCR,KSPFCGSetTruncationType(),KSPFCGGetTruncationType()

179: E*/
180: typedef enum {KSP_FCD_TRUNC_TYPE_STANDARD,KSP_FCD_TRUNC_TYPE_NOTAY} KSPFCDTruncationType;
181: PETSC_EXTERN const char *const KSPFCDTruncationTypes[];

183: PETSC_EXTERN PetscErrorCode KSPFCGSetMmax(KSP,PetscInt);
184: PETSC_EXTERN PetscErrorCode KSPFCGGetMmax(KSP,PetscInt*);
185: PETSC_EXTERN PetscErrorCode KSPFCGSetNprealloc(KSP,PetscInt);
186: PETSC_EXTERN PetscErrorCode KSPFCGGetNprealloc(KSP,PetscInt*);
187: PETSC_EXTERN PetscErrorCode KSPFCGSetTruncationType(KSP,KSPFCDTruncationType);
188: PETSC_EXTERN PetscErrorCode KSPFCGGetTruncationType(KSP,KSPFCDTruncationType*);

190: PETSC_EXTERN PetscErrorCode KSPPIPEFCGSetMmax(KSP,PetscInt);
191: PETSC_EXTERN PetscErrorCode KSPPIPEFCGGetMmax(KSP,PetscInt*);
192: PETSC_EXTERN PetscErrorCode KSPPIPEFCGSetNprealloc(KSP,PetscInt);
193: PETSC_EXTERN PetscErrorCode KSPPIPEFCGGetNprealloc(KSP,PetscInt*);
194: PETSC_EXTERN PetscErrorCode KSPPIPEFCGSetTruncationType(KSP,KSPFCDTruncationType);
195: PETSC_EXTERN PetscErrorCode KSPPIPEFCGGetTruncationType(KSP,KSPFCDTruncationType*);

197: PETSC_EXTERN PetscErrorCode KSPPIPEGCRSetMmax(KSP,PetscInt);
198: PETSC_EXTERN PetscErrorCode KSPPIPEGCRGetMmax(KSP,PetscInt*);
199: PETSC_EXTERN PetscErrorCode KSPPIPEGCRSetNprealloc(KSP,PetscInt);
200: PETSC_EXTERN PetscErrorCode KSPPIPEGCRGetNprealloc(KSP,PetscInt*);
201: PETSC_EXTERN PetscErrorCode KSPPIPEGCRSetTruncationType(KSP,KSPFCDTruncationType);
202: PETSC_EXTERN PetscErrorCode KSPPIPEGCRGetTruncationType(KSP,KSPFCDTruncationType*);
203: PETSC_EXTERN PetscErrorCode KSPPIPEGCRSetUnrollW(KSP,PetscBool);
204: PETSC_EXTERN PetscErrorCode KSPPIPEGCRGetUnrollW(KSP,PetscBool*);

206: PETSC_EXTERN PetscErrorCode KSPGMRESSetRestart(KSP, PetscInt);
207: PETSC_EXTERN PetscErrorCode KSPGMRESGetRestart(KSP, PetscInt*);
208: PETSC_EXTERN PetscErrorCode KSPGMRESSetHapTol(KSP,PetscReal);

210: PETSC_EXTERN PetscErrorCode KSPGMRESSetPreAllocateVectors(KSP);
211: PETSC_EXTERN PetscErrorCode KSPGMRESSetOrthogonalization(KSP,PetscErrorCode (*)(KSP,PetscInt));
212: PETSC_EXTERN PetscErrorCode KSPGMRESGetOrthogonalization(KSP,PetscErrorCode (**)(KSP,PetscInt));
213: PETSC_EXTERN PetscErrorCode KSPGMRESModifiedGramSchmidtOrthogonalization(KSP,PetscInt);
214: PETSC_EXTERN PetscErrorCode KSPGMRESClassicalGramSchmidtOrthogonalization(KSP,PetscInt);

216: PETSC_EXTERN PetscErrorCode KSPLGMRESSetAugDim(KSP,PetscInt);
217: PETSC_EXTERN PetscErrorCode KSPLGMRESSetConstant(KSP);

219: PETSC_EXTERN PetscErrorCode KSPPIPEFGMRESSetShift(KSP,PetscScalar);

221: PETSC_EXTERN PetscErrorCode KSPGCRSetRestart(KSP,PetscInt);
222: PETSC_EXTERN PetscErrorCode KSPGCRGetRestart(KSP,PetscInt*);
223: PETSC_EXTERN PetscErrorCode KSPGCRSetModifyPC(KSP,PetscErrorCode (*)(KSP,PetscInt,PetscReal,void*),void*,PetscErrorCode(*)(void*));

225: PETSC_EXTERN PetscErrorCode KSPFETIDPGetInnerBDDC(KSP,PC*);
226: PETSC_EXTERN PetscErrorCode KSPFETIDPSetInnerBDDC(KSP,PC);
227: PETSC_EXTERN PetscErrorCode KSPFETIDPGetInnerKSP(KSP,KSP*);
228: PETSC_EXTERN PetscErrorCode KSPFETIDPSetPressureOperator(KSP,Mat);
229: /*E
230:     KSPGMRESCGSRefinementType - How the classical (unmodified) Gram-Schmidt is performed.

232:    Level: advanced

234: .seealso: KSPGMRESClassicalGramSchmidtOrthogonalization(), KSPGMRESSetOrthogonalization(), KSPGMRESGetOrthogonalization(),
235:           KSPGMRESSetCGSRefinementType(), KSPGMRESGetCGSRefinementType(), KSPGMRESModifiedGramSchmidtOrthogonalization()

237: E*/
238: typedef enum {KSP_GMRES_CGS_REFINE_NEVER, KSP_GMRES_CGS_REFINE_IFNEEDED, KSP_GMRES_CGS_REFINE_ALWAYS} KSPGMRESCGSRefinementType;
239: PETSC_EXTERN const char *const KSPGMRESCGSRefinementTypes[];
240: /*MC
241:     KSP_GMRES_CGS_REFINE_NEVER - Do the classical (unmodified) Gram-Schmidt process

243:    Level: advanced

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

247: .seealso: KSPGMRESClassicalGramSchmidtOrthogonalization(), KSPGMRESSetOrthogonalization(), KSPGMRESGetOrthogonalization(),
248:           KSPGMRESSetCGSRefinementType(), KSPGMRESGetCGSRefinementType(), KSP_GMRES_CGS_REFINE_IFNEEDED, KSP_GMRES_CGS_REFINE_ALWAYS,
249:           KSPGMRESModifiedGramSchmidtOrthogonalization()
250: M*/

252: /*MC
253:     KSP_GMRES_CGS_REFINE_IFNEEDED - Do the classical (unmodified) Gram-Schmidt process and one step of
254:           iterative refinement if an estimate of the orthogonality of the resulting vectors indicates
255:           poor orthogonality.

257:    Level: advanced

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

262: .seealso: KSPGMRESClassicalGramSchmidtOrthogonalization(), KSPGMRESSetOrthogonalization(), KSPGMRESGetOrthogonalization(),
263:           KSPGMRESSetCGSRefinementType(), KSPGMRESGetCGSRefinementType(), KSP_GMRES_CGS_REFINE_NEVER, KSP_GMRES_CGS_REFINE_ALWAYS,
264:           KSPGMRESModifiedGramSchmidtOrthogonalization()
265: M*/

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

270:    Level: advanced

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

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

277: .seealso: KSPGMRESClassicalGramSchmidtOrthogonalization(), KSPGMRESSetOrthogonalization(), KSPGMRESGetOrthogonalization(),
278:           KSPGMRESSetCGSRefinementType(), KSPGMRESGetCGSRefinementType(), KSP_GMRES_CGS_REFINE_IFNEEDED, KSP_GMRES_CGS_REFINE_ALWAYS,
279:           KSPGMRESModifiedGramSchmidtOrthogonalization()
280: M*/

282: PETSC_EXTERN PetscErrorCode KSPGMRESSetCGSRefinementType(KSP,KSPGMRESCGSRefinementType);
283: PETSC_EXTERN PetscErrorCode KSPGMRESGetCGSRefinementType(KSP,KSPGMRESCGSRefinementType*);

285: PETSC_EXTERN PetscErrorCode KSPFGMRESModifyPCNoChange(KSP,PetscInt,PetscInt,PetscReal,void*);
286: PETSC_EXTERN PetscErrorCode KSPFGMRESModifyPCKSP(KSP,PetscInt,PetscInt,PetscReal,void*);
287: PETSC_EXTERN PetscErrorCode KSPFGMRESSetModifyPC(KSP,PetscErrorCode (*)(KSP,PetscInt,PetscInt,PetscReal,void*),void*,PetscErrorCode(*)(void*));

289: PETSC_EXTERN PetscErrorCode KSPQCGSetTrustRegionRadius(KSP,PetscReal);
290: PETSC_EXTERN PetscErrorCode KSPQCGGetQuadratic(KSP,PetscReal*);
291: PETSC_EXTERN PetscErrorCode KSPQCGGetTrialStepNorm(KSP,PetscReal*);

293: PETSC_EXTERN PetscErrorCode KSPBCGSLSetXRes(KSP,PetscReal);
294: PETSC_EXTERN PetscErrorCode KSPBCGSLSetPol(KSP,PetscBool );
295: PETSC_EXTERN PetscErrorCode KSPBCGSLSetEll(KSP,PetscInt);
296: PETSC_EXTERN PetscErrorCode KSPBCGSLSetUsePseudoinverse(KSP,PetscBool);

298: PETSC_EXTERN PetscErrorCode KSPSetFromOptions(KSP);
299: PETSC_EXTERN PetscErrorCode KSPResetFromOptions(KSP);
300: PETSC_EXTERN PetscErrorCode KSPAddOptionsChecker(PetscErrorCode (*)(KSP));

302: PETSC_EXTERN PetscErrorCode KSPMonitorSingularValue(KSP,PetscInt,PetscReal,PetscViewerAndFormat*);
303: PETSC_EXTERN PetscErrorCode KSPMonitorDefault(KSP,PetscInt,PetscReal,PetscViewerAndFormat*);
304: PETSC_EXTERN PetscErrorCode KSPLSQRMonitorDefault(KSP,PetscInt,PetscReal,PetscViewerAndFormat*);
305: PETSC_EXTERN PetscErrorCode KSPMonitorRange(KSP,PetscInt,PetscReal,PetscViewerAndFormat*);
306: PETSC_EXTERN PetscErrorCode KSPMonitorDynamicTolerance(KSP ksp,PetscInt its,PetscReal fnorm,void *dummy);
307: PETSC_EXTERN PetscErrorCode KSPMonitorDynamicToleranceDestroy(void **dummy);
308: PETSC_EXTERN PetscErrorCode KSPMonitorTrueResidualNorm(KSP,PetscInt,PetscReal,PetscViewerAndFormat*);
309: PETSC_EXTERN PetscErrorCode KSPMonitorTrueResidualMaxNorm(KSP,PetscInt,PetscReal,PetscViewerAndFormat*);
310: PETSC_EXTERN PetscErrorCode KSPMonitorDefaultShort(KSP,PetscInt,PetscReal,PetscViewerAndFormat*);
311: PETSC_EXTERN PetscErrorCode KSPMonitorSolution(KSP,PetscInt,PetscReal,PetscViewerAndFormat*);
312: PETSC_EXTERN PetscErrorCode KSPMonitorSAWs(KSP,PetscInt,PetscReal,void*);
313: PETSC_EXTERN PetscErrorCode KSPMonitorSAWsCreate(KSP,void**);
314: PETSC_EXTERN PetscErrorCode KSPMonitorSAWsDestroy(void**);
315: PETSC_EXTERN PetscErrorCode KSPGMRESMonitorKrylov(KSP,PetscInt,PetscReal,void*);
316: PETSC_EXTERN PetscErrorCode KSPMonitorSetFromOptions(KSP,const char[],const char[],const char [],PetscErrorCode (*)(KSP,PetscInt,PetscReal,PetscViewerAndFormat*));

318: PETSC_EXTERN PetscErrorCode KSPUnwindPreconditioner(KSP,Vec,Vec);
319: PETSC_EXTERN PetscErrorCode KSPInitialResidual(KSP,Vec,Vec,Vec,Vec,Vec);

321: PETSC_EXTERN PetscErrorCode KSPSetOperators(KSP,Mat,Mat);
322: PETSC_EXTERN PetscErrorCode KSPGetOperators(KSP,Mat*,Mat*);
323: PETSC_EXTERN PetscErrorCode KSPGetOperatorsSet(KSP,PetscBool*,PetscBool*);
324: PETSC_EXTERN PetscErrorCode KSPSetOptionsPrefix(KSP,const char[]);
325: PETSC_EXTERN PetscErrorCode KSPAppendOptionsPrefix(KSP,const char[]);
326: PETSC_EXTERN PetscErrorCode KSPGetOptionsPrefix(KSP,const char*[]);

328: PETSC_EXTERN PetscErrorCode KSPSetDiagonalScale(KSP,PetscBool );
329: PETSC_EXTERN PetscErrorCode KSPGetDiagonalScale(KSP,PetscBool*);
330: PETSC_EXTERN PetscErrorCode KSPSetDiagonalScaleFix(KSP,PetscBool );
331: PETSC_EXTERN PetscErrorCode KSPGetDiagonalScaleFix(KSP,PetscBool*);

333: PETSC_EXTERN PetscErrorCode KSPView(KSP,PetscViewer);
334: PETSC_EXTERN PetscErrorCode KSPLoad(KSP,PetscViewer);
335: PETSC_STATIC_INLINE PetscErrorCode KSPViewFromOptions(KSP A,PetscObject obj,const char name[]) {return PetscObjectViewFromOptions((PetscObject)A,obj,name);}
336: PETSC_EXTERN PetscErrorCode KSPReasonView(KSP,PetscViewer);
337: PETSC_EXTERN PetscErrorCode KSPReasonViewFromOptions(KSP);

339: #define KSP_FILE_CLASSID 1211223

341: PETSC_EXTERN PetscErrorCode KSPLSQRSetExactMatNorm(KSP,PetscBool);
342: PETSC_EXTERN PetscErrorCode KSPLSQRSetComputeStandardErrorVec(KSP,PetscBool);
343: PETSC_EXTERN PetscErrorCode KSPLSQRGetStandardErrorVec(KSP,Vec*);
344: PETSC_EXTERN PetscErrorCode KSPLSQRGetNorms(KSP,PetscReal*,PetscReal*);

346: PETSC_EXTERN PetscErrorCode PCRedundantGetKSP(PC,KSP*);
347: PETSC_EXTERN PetscErrorCode PCRedistributeGetKSP(PC,KSP*);
348: PETSC_EXTERN PetscErrorCode PCTelescopeGetKSP(PC,KSP*);

350: /*E
351:     KSPNormType - Norm that is passed in the Krylov convergence
352:        test routines.

354:    Level: advanced

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

359:    Notes:
360:     this must match petsc/finclude/petscksp.h

362: .seealso: KSPSolve(), KSPGetConvergedReason(), KSPSetNormType(),
363:           KSPSetConvergenceTest(), KSPSetPCSide()
364: E*/
365: typedef enum {KSP_NORM_DEFAULT = -1,KSP_NORM_NONE = 0,KSP_NORM_PRECONDITIONED = 1,KSP_NORM_UNPRECONDITIONED = 2,KSP_NORM_NATURAL = 3} KSPNormType;
366: #define KSP_NORM_MAX (KSP_NORM_NATURAL + 1)
367: PETSC_EXTERN const char *const*const KSPNormTypes;

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

374:    Level: advanced

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

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

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

385:    Level: advanced

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

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

394:    Level: advanced

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

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

403:    Level: advanced

405: .seealso: KSPNormType, KSPSetNormType(), KSP_NORM_NONE, KSP_NORM_PRECONDITIONED, KSP_NORM_UNPRECONDITIONED, KSPSetConvergenceTest()
406: M*/

408: PETSC_EXTERN PetscErrorCode KSPSetNormType(KSP,KSPNormType);
409: PETSC_EXTERN PetscErrorCode KSPGetNormType(KSP,KSPNormType*);
410: PETSC_EXTERN PetscErrorCode KSPSetSupportedNorm(KSP ksp,KSPNormType,PCSide,PetscInt);
411: PETSC_EXTERN PetscErrorCode KSPSetCheckNormIteration(KSP,PetscInt);
412: PETSC_EXTERN PetscErrorCode KSPSetLagNorm(KSP,PetscBool);

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

417:    Level: beginner

419:    Notes:
420:     See KSPGetConvergedReason() for explanation of each value

422:    Developer Notes:
423:     this must match petsc/finclude/petscksp.h

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

428: .seealso: KSPSolve(), KSPGetConvergedReason(), KSPSetTolerances()
429: E*/
430: #define KSP_DIVERGED_PCSETUP_FAILED_DEPRECATED KSP_DIVERGED_PCSETUP_FAILED PETSC_DEPRECATED_ENUM("Use KSP_DIVERGED_PC_FAILED (since version 3.11)")
431: typedef enum {/* converged */
432:               KSP_CONVERGED_RTOL_NORMAL        =  1,
433:               KSP_CONVERGED_ATOL_NORMAL        =  9,
434:               KSP_CONVERGED_RTOL               =  2,
435:               KSP_CONVERGED_ATOL               =  3,
436:               KSP_CONVERGED_ITS                =  4,
437:               KSP_CONVERGED_CG_NEG_CURVE       =  5,
438:               KSP_CONVERGED_CG_CONSTRAINED     =  6,
439:               KSP_CONVERGED_STEP_LENGTH        =  7,
440:               KSP_CONVERGED_HAPPY_BREAKDOWN    =  8,
441:               /* diverged */
442:               KSP_DIVERGED_NULL                = -2,
443:               KSP_DIVERGED_ITS                 = -3,
444:               KSP_DIVERGED_DTOL                = -4,
445:               KSP_DIVERGED_BREAKDOWN           = -5,
446:               KSP_DIVERGED_BREAKDOWN_BICG      = -6,
447:               KSP_DIVERGED_NONSYMMETRIC        = -7,
448:               KSP_DIVERGED_INDEFINITE_PC       = -8,
449:               KSP_DIVERGED_NANORINF            = -9,
450:               KSP_DIVERGED_INDEFINITE_MAT      = -10,
451:               KSP_DIVERGED_PC_FAILED           = -11,
452:               KSP_DIVERGED_PCSETUP_FAILED_DEPRECATED  = -11,

454:               KSP_CONVERGED_ITERATING          =  0} KSPConvergedReason;
455: PETSC_EXTERN const char *const*KSPConvergedReasons;

457: /*MC
458:      KSP_CONVERGED_RTOL - norm(r) <= rtol*norm(b) or rtol*norm(b - A*x_0) if KSPConvergedDefaultSetUIRNorm() was called

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:    See also KSP_CONVERGED_ATOL which may apply before this tolerance.

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

470: M*/

472: /*MC
473:      KSP_CONVERGED_ATOL - norm(r) <= atol

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:    See also KSP_CONVERGED_RTOL which may apply before this tolerance.

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

485: M*/

487: /*MC
488:      KSP_DIVERGED_DTOL - norm(r) >= dtol*norm(b)

490:    Level: beginner

492:    See KSPNormType and KSPSetNormType() for possible norms that may be used. By default
493:        for left preconditioning it is the 2-norm of the preconditioned residual, and the
494:        2-norm of the residual for right preconditioning

496:    Level: beginner

498: .seealso:  KSP_CONVERGED_ATOL, KSP_DIVERGED_RTOL, KSPSolve(), KSPGetConvergedReason(), KSPConvergedReason, KSPSetTolerances()

500: M*/

502: /*MC
503:      KSP_DIVERGED_ITS - Ran out of iterations before any convergence criteria was
504:       reached

506:    Level: beginner

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

510: M*/

512: /*MC
513:      KSP_CONVERGED_ITS - Used by the KSPPREONLY solver after the single iteration of
514:            the preconditioner is applied. Also used when the KSPConvergedSkip() convergence
515:            test routine is set in KSP.

517:    Level: beginner

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

521: M*/

523: /*MC
524:      KSP_DIVERGED_BREAKDOWN - A breakdown in the Krylov method was detected so the
525:           method could not continue to enlarge the Krylov space. Could be due to a singlular matrix or
526:           preconditioner.

528:    Level: beginner

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

532: M*/

534: /*MC
535:      KSP_DIVERGED_BREAKDOWN_BICG - A breakdown in the KSPBICG method was detected so the
536:           method could not continue to enlarge the Krylov space.

538:    Level: beginner

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

542: M*/

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

548:    Level: beginner

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

552: M*/

554: /*MC
555:      KSP_DIVERGED_INDEFINITE_PC - It appears the preconditioner is indefinite (has both
556:         positive and negative eigenvalues) and this Krylov method (KSPCG) requires it to
557:         be positive definite

559:    Level: beginner

561:      Notes:
562:     This can happen with the PCICC preconditioner, use -pc_factor_shift_positive_definite to force
563:   the PCICC preconditioner to generate a positive definite preconditioner

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

567: M*/

569: /*MC
570:      KSP_DIVERGED_PC_FAILED - It was not possible to build or use the requested preconditioner. This is usually due to a 
571:      zero pivot in a factorization. It can also result from a failure in a subpreconditioner inside a nested preconditioner
572:      such as PCFIELDSPLIT.

574:    Level: beginner

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


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

582: M*/

584: /*MC
585:      KSP_CONVERGED_ITERATING - This flag is returned if you call KSPGetConvergedReason()
586:         while the KSPSolve() is still running.

588:    Level: beginner

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

592: M*/

594: PETSC_EXTERN PetscErrorCode KSPSetConvergenceTest(KSP,PetscErrorCode (*)(KSP,PetscInt,PetscReal,KSPConvergedReason*,void*),void*,PetscErrorCode (*)(void*));
595: PETSC_EXTERN PetscErrorCode KSPGetConvergenceTest(KSP,PetscErrorCode (**)(KSP,PetscInt,PetscReal,KSPConvergedReason*,void*),void**,PetscErrorCode (**)(void*));
596: PETSC_EXTERN PetscErrorCode KSPGetAndClearConvergenceTest(KSP,PetscErrorCode (**)(KSP,PetscInt,PetscReal,KSPConvergedReason*,void*),void**,PetscErrorCode (**)(void*));
597: PETSC_EXTERN PetscErrorCode KSPGetConvergenceContext(KSP,void**);
598: PETSC_EXTERN PetscErrorCode KSPConvergedDefault(KSP,PetscInt,PetscReal,KSPConvergedReason*,void*);
599: PETSC_EXTERN PetscErrorCode KSPLSQRConvergedDefault(KSP,PetscInt,PetscReal,KSPConvergedReason*,void*);
600: PETSC_EXTERN PetscErrorCode KSPConvergedDefaultDestroy(void*);
601: PETSC_EXTERN PetscErrorCode KSPConvergedDefaultCreate(void**);
602: PETSC_EXTERN PetscErrorCode KSPConvergedDefaultSetUIRNorm(KSP);
603: PETSC_EXTERN PetscErrorCode KSPConvergedDefaultSetUMIRNorm(KSP);
604: PETSC_EXTERN PetscErrorCode KSPConvergedSkip(KSP,PetscInt,PetscReal,KSPConvergedReason*,void*);
605: PETSC_EXTERN PetscErrorCode KSPGetConvergedReason(KSP,KSPConvergedReason*);

607: PETSC_DEPRECATED_FUNCTION("Use KSPConvergedDefault() (since version 3.5)") PETSC_STATIC_INLINE void KSPDefaultConverged(void) { /* never called */ }
608: #define KSPDefaultConverged (KSPDefaultConverged, KSPConvergedDefault)
609: PETSC_DEPRECATED_FUNCTION("Use KSPConvergedDefaultDestroy() (since version 3.5)") PETSC_STATIC_INLINE void KSPDefaultConvergedDestroy(void) { /* never called */ }
610: #define KSPDefaultConvergedDestroy (KSPDefaultConvergedDestroy, KSPConvergedDefaultDestroy)
611: PETSC_DEPRECATED_FUNCTION("Use KSPConvergedDefaultCreate() (since version 3.5)") PETSC_STATIC_INLINE void KSPDefaultConvergedCreate(void) { /* never called */ }
612: #define KSPDefaultConvergedCreate (KSPDefaultConvergedCreate, KSPConvergedDefaultCreate)
613: PETSC_DEPRECATED_FUNCTION("Use KSPConvergedDefaultSetUIRNorm() (since version 3.5)") PETSC_STATIC_INLINE void KSPDefaultConvergedSetUIRNorm(void) { /* never called */ }
614: #define KSPDefaultConvergedSetUIRNorm (KSPDefaultConvergedSetUIRNorm, KSPConvergedDefaultSetUIRNorm)
615: PETSC_DEPRECATED_FUNCTION("Use KSPConvergedDefaultSetUMIRNorm() (since version 3.5)") PETSC_STATIC_INLINE void KSPDefaultConvergedSetUMIRNorm(void) { /* never called */ }
616: #define KSPDefaultConvergedSetUMIRNorm (KSPDefaultConvergedSetUMIRNorm, KSPConvergedDefaultSetUMIRNorm)
617: PETSC_DEPRECATED_FUNCTION("Use KSPConvergedSkip() (since version 3.5)") PETSC_STATIC_INLINE void KSPSkipConverged(void) { /* never called */ }
618: #define KSPSkipConverged (KSPSkipConverged, KSPConvergedSkip)

620: PETSC_EXTERN PetscErrorCode KSPComputeOperator(KSP,MatType,Mat*);
621: PETSC_DEPRECATED_FUNCTION("Use KSPComputeOperator() (since version 3.12)") PETSC_STATIC_INLINE PetscErrorCode KSPComputeExplicitOperator(KSP A,Mat* B) { return KSPComputeOperator(A,NULL,B); }

623: /*E
624:     KSPCGType - Determines what type of CG to use

626:    Level: beginner

628: .seealso: KSPCGSetType()
629: E*/
630: typedef enum {KSP_CG_SYMMETRIC=0,KSP_CG_HERMITIAN=1} KSPCGType;
631: PETSC_EXTERN const char *const KSPCGTypes[];

633: PETSC_EXTERN PetscErrorCode KSPCGSetType(KSP,KSPCGType);
634: PETSC_EXTERN PetscErrorCode KSPCGUseSingleReduction(KSP,PetscBool );

636: PETSC_EXTERN PetscErrorCode KSPCGSetRadius(KSP,PetscReal);
637: PETSC_EXTERN PetscErrorCode KSPCGGetNormD(KSP,PetscReal*);
638: PETSC_EXTERN PetscErrorCode KSPCGGetObjFcn(KSP,PetscReal*);

640: PETSC_EXTERN PetscErrorCode KSPGLTRGetMinEig(KSP,PetscReal*);
641: PETSC_EXTERN PetscErrorCode KSPGLTRGetLambda(KSP,PetscReal*);
642: PETSC_DEPRECATED_FUNCTION("Use KSPGLTRGetMinEig (since v3.12)") PETSC_STATIC_INLINE PetscErrorCode KSPCGGLTRGetMinEig(KSP ksp,PetscReal *x) {return KSPGLTRGetMinEig(ksp,x);}
643: PETSC_DEPRECATED_FUNCTION("Use KSPGLTRGetLambda (since v3.12)") PETSC_STATIC_INLINE PetscErrorCode KSPCGGLTRGetLambda(KSP ksp,PetscReal *x) {return KSPGLTRGetLambda(ksp,x);}

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

647: PETSC_EXTERN PetscErrorCode PCPreSolve(PC,KSP);
648: PETSC_EXTERN PetscErrorCode PCPostSolve(PC,KSP);

650:  #include <petscdrawtypes.h>
651: PETSC_EXTERN PetscErrorCode KSPMonitorLGResidualNormCreate(MPI_Comm,const char[],const char[],int,int,int,int,PetscDrawLG*);
652: PETSC_EXTERN PetscErrorCode KSPMonitorLGResidualNorm(KSP,PetscInt,PetscReal,void*);
653: PETSC_EXTERN PetscErrorCode KSPMonitorLGTrueResidualNormCreate(MPI_Comm,const char[],const char[],int,int,int,int,PetscDrawLG*);
654: PETSC_EXTERN PetscErrorCode KSPMonitorLGTrueResidualNorm(KSP,PetscInt,PetscReal,void*);
655: PETSC_EXTERN PetscErrorCode KSPMonitorLGRange(KSP,PetscInt,PetscReal,void*);

657: PETSC_EXTERN PetscErrorCode PCShellSetPreSolve(PC,PetscErrorCode (*)(PC,KSP,Vec,Vec));
658: PETSC_EXTERN PetscErrorCode PCShellSetPostSolve(PC,PetscErrorCode (*)(PC,KSP,Vec,Vec));

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

663:    Level: beginner

665: .seealso:  KSPCreate(), KSPSetGuessType(), KSPGuessType
666: S*/
667: typedef struct _p_KSPGuess* KSPGuess;
668: /*J
669:     KSPGuessType - String with the name of a PETSc initial guess for Krylov methods.

671:    Level: beginner

673: .seealso: KSPGuess
674: J*/
675: typedef const char* KSPGuessType;
676: #define KSPGUESSFISCHER "fischer"
677: #define KSPGUESSPOD     "pod"
678: PETSC_EXTERN PetscErrorCode KSPGuessRegister(const char[],PetscErrorCode (*)(KSPGuess));
679: PETSC_EXTERN PetscErrorCode KSPSetGuess(KSP,KSPGuess);
680: PETSC_EXTERN PetscErrorCode KSPGetGuess(KSP,KSPGuess*);
681: PETSC_EXTERN PetscErrorCode KSPGuessView(KSPGuess,PetscViewer);
682: PETSC_EXTERN PetscErrorCode KSPGuessDestroy(KSPGuess*);
683: PETSC_EXTERN PetscErrorCode KSPGuessCreate(MPI_Comm,KSPGuess*);
684: PETSC_EXTERN PetscErrorCode KSPGuessSetType(KSPGuess,KSPGuessType);
685: PETSC_EXTERN PetscErrorCode KSPGuessGetType(KSPGuess,KSPGuessType*);
686: PETSC_EXTERN PetscErrorCode KSPGuessSetUp(KSPGuess);
687: PETSC_EXTERN PetscErrorCode KSPGuessUpdate(KSPGuess,Vec,Vec);
688: PETSC_EXTERN PetscErrorCode KSPGuessFormGuess(KSPGuess,Vec,Vec);
689: PETSC_EXTERN PetscErrorCode KSPGuessSetFromOptions(KSPGuess);
690: PETSC_EXTERN PetscErrorCode KSPGuessFischerSetModel(KSPGuess,PetscInt,PetscInt);
691: PETSC_EXTERN PetscErrorCode KSPSetUseFischerGuess(KSP,PetscInt,PetscInt);
692: PETSC_EXTERN PetscErrorCode KSPSetInitialGuessKnoll(KSP,PetscBool);
693: PETSC_EXTERN PetscErrorCode KSPGetInitialGuessKnoll(KSP,PetscBool*);

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

698:     Level: intermediate

700: .seealso: MatSchurComplementGetAinvType(), MatSchurComplementSetAinvType(), MatSchurComplementGetPmat(), MatGetSchurComplement(), MatCreateSchurComplementPmat()
701: E*/
702: typedef enum {MAT_SCHUR_COMPLEMENT_AINV_DIAG, MAT_SCHUR_COMPLEMENT_AINV_LUMP, MAT_SCHUR_COMPLEMENT_AINV_BLOCK_DIAG} MatSchurComplementAinvType;
703: PETSC_EXTERN const char *const MatSchurComplementAinvTypes[];

705: PETSC_EXTERN PetscErrorCode MatCreateSchurComplement(Mat,Mat,Mat,Mat,Mat,Mat*);
706: PETSC_EXTERN PetscErrorCode MatSchurComplementGetKSP(Mat,KSP*);
707: PETSC_EXTERN PetscErrorCode MatSchurComplementSetKSP(Mat,KSP);
708: PETSC_EXTERN PetscErrorCode MatSchurComplementSetSubMatrices(Mat,Mat,Mat,Mat,Mat,Mat);
709: PETSC_EXTERN PetscErrorCode MatSchurComplementUpdateSubMatrices(Mat,Mat,Mat,Mat,Mat,Mat);
710: PETSC_EXTERN PetscErrorCode MatSchurComplementGetSubMatrices(Mat,Mat*,Mat*,Mat*,Mat*,Mat*);
711: PETSC_EXTERN PetscErrorCode MatSchurComplementSetAinvType(Mat,MatSchurComplementAinvType);
712: PETSC_EXTERN PetscErrorCode MatSchurComplementGetAinvType(Mat,MatSchurComplementAinvType*);
713: PETSC_EXTERN PetscErrorCode MatSchurComplementGetPmat(Mat,MatReuse,Mat*);
714: PETSC_EXTERN PetscErrorCode MatSchurComplementComputeExplicitOperator(Mat,Mat*);
715: PETSC_EXTERN PetscErrorCode MatGetSchurComplement(Mat,IS,IS,IS,IS,MatReuse,Mat*,MatSchurComplementAinvType,MatReuse,Mat*);
716: PETSC_EXTERN PetscErrorCode MatCreateSchurComplementPmat(Mat,Mat,Mat,Mat,MatSchurComplementAinvType,MatReuse,Mat*);

718: PETSC_EXTERN PetscErrorCode MatCreateLMVMDFP(MPI_Comm,PetscInt,PetscInt,Mat*);
719: PETSC_EXTERN PetscErrorCode MatCreateLMVMBFGS(MPI_Comm,PetscInt,PetscInt,Mat*);
720: PETSC_EXTERN PetscErrorCode MatCreateLMVMSR1(MPI_Comm,PetscInt,PetscInt,Mat*);
721: PETSC_EXTERN PetscErrorCode MatCreateLMVMBrdn(MPI_Comm,PetscInt,PetscInt,Mat*);
722: PETSC_EXTERN PetscErrorCode MatCreateLMVMBadBrdn(MPI_Comm,PetscInt,PetscInt,Mat*);
723: PETSC_EXTERN PetscErrorCode MatCreateLMVMSymBrdn(MPI_Comm,PetscInt,PetscInt,Mat*);
724: PETSC_EXTERN PetscErrorCode MatCreateLMVMSymBadBrdn(MPI_Comm,PetscInt,PetscInt,Mat*);
725: PETSC_EXTERN PetscErrorCode MatCreateLMVMDiagBrdn(MPI_Comm,PetscInt,PetscInt,Mat*);

727: PETSC_EXTERN PetscErrorCode MatLMVMUpdate(Mat, Vec, Vec);
728: PETSC_EXTERN PetscErrorCode MatLMVMIsAllocated(Mat, PetscBool*);
729: PETSC_EXTERN PetscErrorCode MatLMVMAllocate(Mat, Vec, Vec);
730: PETSC_EXTERN PetscErrorCode MatLMVMReset(Mat, PetscBool);
731: PETSC_EXTERN PetscErrorCode MatLMVMResetShift(Mat);
732: PETSC_EXTERN PetscErrorCode MatLMVMClearJ0(Mat);
733: PETSC_EXTERN PetscErrorCode MatLMVMSetJ0(Mat, Mat);
734: PETSC_EXTERN PetscErrorCode MatLMVMSetJ0Scale(Mat, PetscReal);
735: PETSC_EXTERN PetscErrorCode MatLMVMSetJ0Diag(Mat, Vec);
736: PETSC_EXTERN PetscErrorCode MatLMVMSetJ0PC(Mat, PC);
737: PETSC_EXTERN PetscErrorCode MatLMVMSetJ0KSP(Mat, KSP);
738: PETSC_EXTERN PetscErrorCode MatLMVMApplyJ0Fwd(Mat, Vec, Vec);
739: PETSC_EXTERN PetscErrorCode MatLMVMApplyJ0Inv(Mat, Vec, Vec);
740: PETSC_EXTERN PetscErrorCode MatLMVMGetJ0(Mat, Mat*);
741: PETSC_EXTERN PetscErrorCode MatLMVMGetJ0PC(Mat, PC*);
742: PETSC_EXTERN PetscErrorCode MatLMVMGetJ0KSP(Mat, KSP*);
743: PETSC_EXTERN PetscErrorCode MatLMVMGetUpdateCount(Mat, PetscInt*);
744: PETSC_EXTERN PetscErrorCode MatLMVMGetRejectCount(Mat, PetscInt*);
745: PETSC_EXTERN PetscErrorCode MatSymBrdnSetDelta(Mat, PetscScalar);

747: PETSC_EXTERN PetscErrorCode KSPSetDM(KSP,DM);
748: PETSC_EXTERN PetscErrorCode KSPSetDMActive(KSP,PetscBool );
749: PETSC_EXTERN PetscErrorCode KSPGetDM(KSP,DM*);
750: PETSC_EXTERN PetscErrorCode KSPSetApplicationContext(KSP,void*);
751: PETSC_EXTERN PetscErrorCode KSPGetApplicationContext(KSP,void*);
752: PETSC_EXTERN PetscErrorCode KSPSetComputeRHS(KSP,PetscErrorCode (*func)(KSP,Vec,void*),void*);
753: PETSC_EXTERN PetscErrorCode KSPSetComputeOperators(KSP,PetscErrorCode(*)(KSP,Mat,Mat,void*),void*);
754: PETSC_EXTERN PetscErrorCode KSPSetComputeInitialGuess(KSP,PetscErrorCode(*)(KSP,Vec,void*),void*);
755: PETSC_EXTERN PetscErrorCode DMKSPSetComputeOperators(DM,PetscErrorCode(*)(KSP,Mat,Mat,void*),void*);
756: PETSC_EXTERN PetscErrorCode DMKSPGetComputeOperators(DM,PetscErrorCode(**)(KSP,Mat,Mat,void*),void*);
757: PETSC_EXTERN PetscErrorCode DMKSPSetComputeRHS(DM,PetscErrorCode(*)(KSP,Vec,void*),void*);
758: PETSC_EXTERN PetscErrorCode DMKSPGetComputeRHS(DM,PetscErrorCode(**)(KSP,Vec,void*),void*);
759: PETSC_EXTERN PetscErrorCode DMKSPSetComputeInitialGuess(DM,PetscErrorCode(*)(KSP,Vec,void*),void*);
760: PETSC_EXTERN PetscErrorCode DMKSPGetComputeInitialGuess(DM,PetscErrorCode(**)(KSP,Vec,void*),void*);

762: PETSC_EXTERN PetscErrorCode DMGlobalToLocalSolve(DM,Vec,Vec);
763: PETSC_EXTERN PetscErrorCode DMProjectField(DM, PetscReal, Vec,
764:                                            void (**)(PetscInt, PetscInt, PetscInt,
765:                                                      const PetscInt[], const PetscInt[], const PetscScalar[], const PetscScalar[], const PetscScalar[],
766:                                                      const PetscInt[], const PetscInt[], const PetscScalar[], const PetscScalar[], const PetscScalar[],
767:                                                      PetscReal, const PetscReal [], PetscInt, const PetscScalar[], PetscScalar []), InsertMode, Vec);
768: #endif