| Line | Branch | Exec | Source |
|---|---|---|---|
| 1 | /* | ||
| 2 | - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - | ||
| 3 | SLEPc - Scalable Library for Eigenvalue Problem Computations | ||
| 4 | Copyright (c) 2002-, Universitat Politecnica de Valencia, Spain | ||
| 5 | |||
| 6 | This file is part of SLEPc. | ||
| 7 | SLEPc is distributed under a 2-clause BSD license (see LICENSE). | ||
| 8 | - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - | ||
| 9 | */ | ||
| 10 | /* | ||
| 11 | Basic NEP routines | ||
| 12 | */ | ||
| 13 | |||
| 14 | #include <slepc/private/nepimpl.h> /*I "slepcnep.h" I*/ | ||
| 15 | |||
| 16 | /* Logging support */ | ||
| 17 | PetscClassId NEP_CLASSID = 0; | ||
| 18 | PetscLogEvent NEP_SetUp = 0,NEP_Solve = 0,NEP_Refine = 0,NEP_FunctionEval = 0,NEP_JacobianEval = 0,NEP_Resolvent = 0,NEP_CISS_SVD = 0; | ||
| 19 | |||
| 20 | /* List of registered NEP routines */ | ||
| 21 | PetscFunctionList NEPList = NULL; | ||
| 22 | PetscBool NEPRegisterAllCalled = PETSC_FALSE; | ||
| 23 | |||
| 24 | /* List of registered NEP monitors */ | ||
| 25 | PetscFunctionList NEPMonitorList = NULL; | ||
| 26 | PetscFunctionList NEPMonitorCreateList = NULL; | ||
| 27 | PetscFunctionList NEPMonitorDestroyList = NULL; | ||
| 28 | PetscBool NEPMonitorRegisterAllCalled = PETSC_FALSE; | ||
| 29 | |||
| 30 | /*@ | ||
| 31 | NEPCreate - Creates the default NEP context. | ||
| 32 | |||
| 33 | Collective | ||
| 34 | |||
| 35 | Input Parameter: | ||
| 36 | . comm - MPI communicator | ||
| 37 | |||
| 38 | Output Parameter: | ||
| 39 | . outnep - location to put the NEP context | ||
| 40 | |||
| 41 | Level: beginner | ||
| 42 | |||
| 43 | .seealso: NEPSetUp(), NEPSolve(), NEPDestroy(), NEP | ||
| 44 | @*/ | ||
| 45 | 1400 | PetscErrorCode NEPCreate(MPI_Comm comm,NEP *outnep) | |
| 46 | { | ||
| 47 | 1400 | NEP nep; | |
| 48 | |||
| 49 |
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1400 | PetscFunctionBegin; |
| 50 |
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1400 | PetscAssertPointer(outnep,2); |
| 51 |
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1400 | PetscCall(NEPInitializePackage()); |
| 52 |
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1400 | PetscCall(SlepcHeaderCreate(nep,NEP_CLASSID,"NEP","Nonlinear Eigenvalue Problem","NEP",comm,NEPDestroy,NEPView)); |
| 53 | |||
| 54 | 1400 | nep->max_it = PETSC_DETERMINE; | |
| 55 | 1400 | nep->nev = 1; | |
| 56 | 1400 | nep->ncv = PETSC_DETERMINE; | |
| 57 | 1400 | nep->mpd = PETSC_DETERMINE; | |
| 58 | 1400 | nep->nini = 0; | |
| 59 | 1400 | nep->target = 0.0; | |
| 60 | 1400 | nep->tol = PETSC_DETERMINE; | |
| 61 | 1400 | nep->conv = NEP_CONV_REL; | |
| 62 | 1400 | nep->stop = NEP_STOP_BASIC; | |
| 63 | 1400 | nep->which = (NEPWhich)0; | |
| 64 | 1400 | nep->problem_type = (NEPProblemType)0; | |
| 65 | 1400 | nep->refine = NEP_REFINE_NONE; | |
| 66 | 1400 | nep->npart = 1; | |
| 67 | 1400 | nep->rtol = PETSC_DETERMINE; | |
| 68 | 1400 | nep->rits = PETSC_DETERMINE; | |
| 69 | 1400 | nep->scheme = (NEPRefineScheme)0; | |
| 70 | 1400 | nep->trackall = PETSC_FALSE; | |
| 71 | 1400 | nep->twosided = PETSC_FALSE; | |
| 72 | |||
| 73 | 1400 | nep->computefunction = NULL; | |
| 74 | 1400 | nep->computejacobian = NULL; | |
| 75 | 1400 | nep->functionctx = NULL; | |
| 76 | 1400 | nep->jacobianctx = NULL; | |
| 77 | 1400 | nep->converged = NEPConvergedRelative; | |
| 78 | 1400 | nep->convergeduser = NULL; | |
| 79 | 1400 | nep->convergeddestroy= NULL; | |
| 80 | 1400 | nep->stopping = NEPStoppingBasic; | |
| 81 | 1400 | nep->stoppinguser = NULL; | |
| 82 | 1400 | nep->stoppingdestroy = NULL; | |
| 83 | 1400 | nep->convergedctx = NULL; | |
| 84 | 1400 | nep->stoppingctx = NULL; | |
| 85 | 1400 | nep->numbermonitors = 0; | |
| 86 | |||
| 87 | 1400 | nep->ds = NULL; | |
| 88 | 1400 | nep->V = NULL; | |
| 89 | 1400 | nep->W = NULL; | |
| 90 | 1400 | nep->rg = NULL; | |
| 91 | 1400 | nep->function = NULL; | |
| 92 | 1400 | nep->function_pre = NULL; | |
| 93 | 1400 | nep->jacobian = NULL; | |
| 94 | 1400 | nep->A = NULL; | |
| 95 | 1400 | nep->f = NULL; | |
| 96 | 1400 | nep->nt = 0; | |
| 97 | 1400 | nep->mstr = UNKNOWN_NONZERO_PATTERN; | |
| 98 | 1400 | nep->P = NULL; | |
| 99 | 1400 | nep->mstrp = UNKNOWN_NONZERO_PATTERN; | |
| 100 | 1400 | nep->IS = NULL; | |
| 101 | 1400 | nep->eigr = NULL; | |
| 102 | 1400 | nep->eigi = NULL; | |
| 103 | 1400 | nep->errest = NULL; | |
| 104 | 1400 | nep->perm = NULL; | |
| 105 | 1400 | nep->nwork = 0; | |
| 106 | 1400 | nep->work = NULL; | |
| 107 | 1400 | nep->data = NULL; | |
| 108 | |||
| 109 | 1400 | nep->state = NEP_STATE_INITIAL; | |
| 110 | 1400 | nep->nconv = 0; | |
| 111 | 1400 | nep->its = 0; | |
| 112 | 1400 | nep->n = 0; | |
| 113 | 1400 | nep->nloc = 0; | |
| 114 | 1400 | nep->nrma = NULL; | |
| 115 | 1400 | nep->fui = (NEPUserInterface)0; | |
| 116 | 1400 | nep->useds = PETSC_FALSE; | |
| 117 | 1400 | nep->resolvent = NULL; | |
| 118 | 1400 | nep->reason = NEP_CONVERGED_ITERATING; | |
| 119 | |||
| 120 |
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1400 | PetscCall(PetscNew(&nep->sc)); |
| 121 | 1400 | *outnep = nep; | |
| 122 |
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1400 | PetscFunctionReturn(PETSC_SUCCESS); |
| 123 | } | ||
| 124 | |||
| 125 | /*@ | ||
| 126 | NEPSetType - Selects the particular solver to be used in the NEP object. | ||
| 127 | |||
| 128 | Logically Collective | ||
| 129 | |||
| 130 | Input Parameters: | ||
| 131 | + nep - the nonlinear eigensolver context | ||
| 132 | - type - a known method | ||
| 133 | |||
| 134 | Options Database Key: | ||
| 135 | . -nep_type <method> - Sets the method; use -help for a list | ||
| 136 | of available methods | ||
| 137 | |||
| 138 | Notes: | ||
| 139 | See "slepc/include/slepcnep.h" for available methods. | ||
| 140 | |||
| 141 | Normally, it is best to use the NEPSetFromOptions() command and | ||
| 142 | then set the NEP type from the options database rather than by using | ||
| 143 | this routine. Using the options database provides the user with | ||
| 144 | maximum flexibility in evaluating the different available methods. | ||
| 145 | The NEPSetType() routine is provided for those situations where it | ||
| 146 | is necessary to set the iterative solver independently of the command | ||
| 147 | line or options database. | ||
| 148 | |||
| 149 | Level: intermediate | ||
| 150 | |||
| 151 | .seealso: NEPType | ||
| 152 | @*/ | ||
| 153 | 1440 | PetscErrorCode NEPSetType(NEP nep,NEPType type) | |
| 154 | { | ||
| 155 | 1440 | PetscErrorCode (*r)(NEP); | |
| 156 | 1440 | PetscBool match; | |
| 157 | |||
| 158 |
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1440 | PetscFunctionBegin; |
| 159 |
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1440 | PetscValidHeaderSpecific(nep,NEP_CLASSID,1); |
| 160 |
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1440 | PetscAssertPointer(type,2); |
| 161 | |||
| 162 |
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1440 | PetscCall(PetscObjectTypeCompare((PetscObject)nep,type,&match)); |
| 163 |
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1440 | if (match) PetscFunctionReturn(PETSC_SUCCESS); |
| 164 | |||
| 165 |
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1410 | PetscCall(PetscFunctionListFind(NEPList,type,&r)); |
| 166 |
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1410 | PetscCheck(r,PetscObjectComm((PetscObject)nep),PETSC_ERR_ARG_UNKNOWN_TYPE,"Unknown NEP type given: %s",type); |
| 167 | |||
| 168 |
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1410 | PetscTryTypeMethod(nep,destroy); |
| 169 |
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1410 | PetscCall(PetscMemzero(nep->ops,sizeof(struct _NEPOps))); |
| 170 | |||
| 171 | 1410 | nep->state = NEP_STATE_INITIAL; | |
| 172 |
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1410 | PetscCall(PetscObjectChangeTypeName((PetscObject)nep,type)); |
| 173 |
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1410 | PetscCall((*r)(nep)); |
| 174 |
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266 | PetscFunctionReturn(PETSC_SUCCESS); |
| 175 | } | ||
| 176 | |||
| 177 | /*@ | ||
| 178 | NEPGetType - Gets the NEP type as a string from the NEP object. | ||
| 179 | |||
| 180 | Not Collective | ||
| 181 | |||
| 182 | Input Parameter: | ||
| 183 | . nep - the eigensolver context | ||
| 184 | |||
| 185 | Output Parameter: | ||
| 186 | . type - name of NEP method | ||
| 187 | |||
| 188 | Level: intermediate | ||
| 189 | |||
| 190 | .seealso: NEPSetType() | ||
| 191 | @*/ | ||
| 192 | 298 | PetscErrorCode NEPGetType(NEP nep,NEPType *type) | |
| 193 | { | ||
| 194 |
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298 | PetscFunctionBegin; |
| 195 |
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298 | PetscValidHeaderSpecific(nep,NEP_CLASSID,1); |
| 196 |
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298 | PetscAssertPointer(type,2); |
| 197 | 298 | *type = ((PetscObject)nep)->type_name; | |
| 198 |
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298 | PetscFunctionReturn(PETSC_SUCCESS); |
| 199 | } | ||
| 200 | |||
| 201 | /*@C | ||
| 202 | NEPRegister - Adds a method to the nonlinear eigenproblem solver package. | ||
| 203 | |||
| 204 | Not Collective | ||
| 205 | |||
| 206 | Input Parameters: | ||
| 207 | + name - name of a new user-defined solver | ||
| 208 | - function - routine to create the solver context | ||
| 209 | |||
| 210 | Notes: | ||
| 211 | NEPRegister() may be called multiple times to add several user-defined solvers. | ||
| 212 | |||
| 213 | Example Usage: | ||
| 214 | .vb | ||
| 215 | NEPRegister("my_solver",MySolverCreate); | ||
| 216 | .ve | ||
| 217 | |||
| 218 | Then, your solver can be chosen with the procedural interface via | ||
| 219 | $ NEPSetType(nep,"my_solver") | ||
| 220 | or at runtime via the option | ||
| 221 | $ -nep_type my_solver | ||
| 222 | |||
| 223 | Level: advanced | ||
| 224 | |||
| 225 | .seealso: NEPRegisterAll() | ||
| 226 | @*/ | ||
| 227 | 7438 | PetscErrorCode NEPRegister(const char *name,PetscErrorCode (*function)(NEP)) | |
| 228 | { | ||
| 229 |
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7438 | PetscFunctionBegin; |
| 230 |
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7438 | PetscCall(NEPInitializePackage()); |
| 231 |
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7438 | PetscCall(PetscFunctionListAdd(&NEPList,name,function)); |
| 232 |
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1376 | PetscFunctionReturn(PETSC_SUCCESS); |
| 233 | } | ||
| 234 | |||
| 235 | /*@C | ||
| 236 | NEPMonitorRegister - Registers a NEP monitor routine that may be accessed with NEPMonitorSetFromOptions(). | ||
| 237 | |||
| 238 | Not Collective | ||
| 239 | |||
| 240 | Input Parameters: | ||
| 241 | + name - name of a new monitor routine | ||
| 242 | . vtype - a PetscViewerType for the output | ||
| 243 | . format - a PetscViewerFormat for the output | ||
| 244 | . monitor - monitor routine, see NEPMonitorRegisterFn | ||
| 245 | . create - creation routine, or NULL | ||
| 246 | - destroy - destruction routine, or NULL | ||
| 247 | |||
| 248 | Notes: | ||
| 249 | NEPMonitorRegister() may be called multiple times to add several user-defined monitors. | ||
| 250 | |||
| 251 | The calling sequence for the given function matches the calling sequence of NEPMonitorFn | ||
| 252 | functions passed to NEPMonitorSet() with the additional requirement that its final argument | ||
| 253 | be a PetscViewerAndFormat. | ||
| 254 | |||
| 255 | Example Usage: | ||
| 256 | .vb | ||
| 257 | NEPMonitorRegister("my_monitor",PETSCVIEWERASCII,PETSC_VIEWER_ASCII_INFO_DETAIL,MyMonitor,NULL,NULL); | ||
| 258 | .ve | ||
| 259 | |||
| 260 | Then, your monitor can be chosen with the procedural interface via | ||
| 261 | $ NEPMonitorSetFromOptions(nep,"-nep_monitor_my_monitor","my_monitor",NULL) | ||
| 262 | or at runtime via the option | ||
| 263 | $ -nep_monitor_my_monitor | ||
| 264 | |||
| 265 | Level: advanced | ||
| 266 | |||
| 267 | .seealso: NEPMonitorSet(), NEPMonitorRegisterAll() | ||
| 268 | @*/ | ||
| 269 | 8010 | PetscErrorCode NEPMonitorRegister(const char name[],PetscViewerType vtype,PetscViewerFormat format,NEPMonitorRegisterFn *monitor,NEPMonitorRegisterCreateFn *create,NEPMonitorRegisterDestroyFn *destroy) | |
| 270 | { | ||
| 271 | 8010 | char key[PETSC_MAX_PATH_LEN]; | |
| 272 | |||
| 273 |
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8010 | PetscFunctionBegin; |
| 274 |
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8010 | PetscCall(NEPInitializePackage()); |
| 275 |
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8010 | PetscCall(SlepcMonitorMakeKey_Internal(name,vtype,format,key)); |
| 276 |
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8010 | PetscCall(PetscFunctionListAdd(&NEPMonitorList,key,monitor)); |
| 277 |
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8010 | if (create) PetscCall(PetscFunctionListAdd(&NEPMonitorCreateList,key,create)); |
| 278 |
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8010 | if (destroy) PetscCall(PetscFunctionListAdd(&NEPMonitorDestroyList,key,destroy)); |
| 279 |
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1482 | PetscFunctionReturn(PETSC_SUCCESS); |
| 280 | } | ||
| 281 | |||
| 282 | /* | ||
| 283 | NEPReset_Problem - Destroys the problem matrices. | ||
| 284 | */ | ||
| 285 | 2497 | PetscErrorCode NEPReset_Problem(NEP nep) | |
| 286 | { | ||
| 287 | 2497 | PetscInt i; | |
| 288 | |||
| 289 |
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2497 | PetscFunctionBegin; |
| 290 |
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2497 | PetscValidHeaderSpecific(nep,NEP_CLASSID,1); |
| 291 |
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2497 | PetscCall(MatDestroy(&nep->function)); |
| 292 |
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2497 | PetscCall(MatDestroy(&nep->function_pre)); |
| 293 |
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2497 | PetscCall(MatDestroy(&nep->jacobian)); |
| 294 |
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2497 | if (nep->fui==NEP_USER_INTERFACE_SPLIT) { |
| 295 |
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1042 | PetscCall(MatDestroyMatrices(nep->nt,&nep->A)); |
| 296 |
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4056 | for (i=0;i<nep->nt;i++) PetscCall(FNDestroy(&nep->f[i])); |
| 297 |
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1042 | PetscCall(PetscFree(nep->f)); |
| 298 |
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1042 | PetscCall(PetscFree(nep->nrma)); |
| 299 |
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1042 | if (nep->P) PetscCall(MatDestroyMatrices(nep->nt,&nep->P)); |
| 300 | 1042 | nep->nt = 0; | |
| 301 | } | ||
| 302 |
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458 | PetscFunctionReturn(PETSC_SUCCESS); |
| 303 | } | ||
| 304 | /*@ | ||
| 305 | NEPReset - Resets the NEP context to the initial state (prior to setup) | ||
| 306 | and destroys any allocated Vecs and Mats. | ||
| 307 | |||
| 308 | Collective | ||
| 309 | |||
| 310 | Input Parameter: | ||
| 311 | . nep - eigensolver context obtained from NEPCreate() | ||
| 312 | |||
| 313 | Level: advanced | ||
| 314 | |||
| 315 | .seealso: NEPDestroy() | ||
| 316 | @*/ | ||
| 317 | 1600 | PetscErrorCode NEPReset(NEP nep) | |
| 318 | { | ||
| 319 |
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1600 | PetscFunctionBegin; |
| 320 |
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1600 | if (nep) PetscValidHeaderSpecific(nep,NEP_CLASSID,1); |
| 321 |
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1476 | if (!nep) PetscFunctionReturn(PETSC_SUCCESS); |
| 322 |
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1600 | PetscTryTypeMethod(nep,reset); |
| 323 |
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1600 | if (nep->refineksp) PetscCall(KSPReset(nep->refineksp)); |
| 324 |
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1600 | PetscCall(NEPReset_Problem(nep)); |
| 325 |
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1600 | PetscCall(BVDestroy(&nep->V)); |
| 326 |
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1600 | PetscCall(BVDestroy(&nep->W)); |
| 327 |
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1600 | PetscCall(VecDestroyVecs(nep->nwork,&nep->work)); |
| 328 |
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1600 | PetscCall(MatDestroy(&nep->resolvent)); |
| 329 | 1600 | nep->nwork = 0; | |
| 330 | 1600 | nep->state = NEP_STATE_INITIAL; | |
| 331 |
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1600 | PetscFunctionReturn(PETSC_SUCCESS); |
| 332 | } | ||
| 333 | |||
| 334 | /*@ | ||
| 335 | NEPDestroy - Destroys the NEP context. | ||
| 336 | |||
| 337 | Collective | ||
| 338 | |||
| 339 | Input Parameter: | ||
| 340 | . nep - eigensolver context obtained from NEPCreate() | ||
| 341 | |||
| 342 | Level: beginner | ||
| 343 | |||
| 344 | .seealso: NEPCreate(), NEPSetUp(), NEPSolve() | ||
| 345 | @*/ | ||
| 346 | 1421 | PetscErrorCode NEPDestroy(NEP *nep) | |
| 347 | { | ||
| 348 |
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1421 | PetscFunctionBegin; |
| 349 |
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1421 | if (!*nep) PetscFunctionReturn(PETSC_SUCCESS); |
| 350 |
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1421 | PetscValidHeaderSpecific(*nep,NEP_CLASSID,1); |
| 351 |
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1421 | if (--((PetscObject)*nep)->refct > 0) { *nep = NULL; PetscFunctionReturn(PETSC_SUCCESS); } |
| 352 |
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1400 | PetscCall(NEPReset(*nep)); |
| 353 |
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1400 | PetscTryTypeMethod(*nep,destroy); |
| 354 |
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1400 | if ((*nep)->eigr) PetscCall(PetscFree4((*nep)->eigr,(*nep)->eigi,(*nep)->errest,(*nep)->perm)); |
| 355 |
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1400 | PetscCall(RGDestroy(&(*nep)->rg)); |
| 356 |
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1400 | PetscCall(DSDestroy(&(*nep)->ds)); |
| 357 |
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1400 | PetscCall(KSPDestroy(&(*nep)->refineksp)); |
| 358 |
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1400 | PetscCall(PetscSubcommDestroy(&(*nep)->refinesubc)); |
| 359 |
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1400 | PetscCall(PetscFree((*nep)->sc)); |
| 360 | /* just in case the initial vectors have not been used */ | ||
| 361 |
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1400 | PetscCall(SlepcBasisDestroy_Private(&(*nep)->nini,&(*nep)->IS)); |
| 362 |
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1400 | if ((*nep)->convergeddestroy) PetscCall((*(*nep)->convergeddestroy)(&(*nep)->convergedctx)); |
| 363 |
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1400 | if ((*nep)->stoppingdestroy) PetscCall((*(*nep)->stoppingdestroy)(&(*nep)->stoppingctx)); |
| 364 |
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1400 | PetscCall(NEPMonitorCancel(*nep)); |
| 365 |
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1400 | PetscCall(PetscHeaderDestroy(nep)); |
| 366 |
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245 | PetscFunctionReturn(PETSC_SUCCESS); |
| 367 | } | ||
| 368 | |||
| 369 | /*@ | ||
| 370 | NEPSetBV - Associates a basis vectors object to the nonlinear eigensolver. | ||
| 371 | |||
| 372 | Collective | ||
| 373 | |||
| 374 | Input Parameters: | ||
| 375 | + nep - eigensolver context obtained from NEPCreate() | ||
| 376 | - bv - the basis vectors object | ||
| 377 | |||
| 378 | Note: | ||
| 379 | Use NEPGetBV() to retrieve the basis vectors context (for example, | ||
| 380 | to free it at the end of the computations). | ||
| 381 | |||
| 382 | Level: advanced | ||
| 383 | |||
| 384 | .seealso: NEPGetBV() | ||
| 385 | @*/ | ||
| 386 | ✗ | PetscErrorCode NEPSetBV(NEP nep,BV bv) | |
| 387 | { | ||
| 388 | ✗ | PetscFunctionBegin; | |
| 389 | ✗ | PetscValidHeaderSpecific(nep,NEP_CLASSID,1); | |
| 390 | ✗ | PetscValidHeaderSpecific(bv,BV_CLASSID,2); | |
| 391 | ✗ | PetscCheckSameComm(nep,1,bv,2); | |
| 392 | ✗ | PetscCall(PetscObjectReference((PetscObject)bv)); | |
| 393 | ✗ | PetscCall(BVDestroy(&nep->V)); | |
| 394 | ✗ | nep->V = bv; | |
| 395 | ✗ | PetscFunctionReturn(PETSC_SUCCESS); | |
| 396 | } | ||
| 397 | |||
| 398 | /*@ | ||
| 399 | NEPGetBV - Obtain the basis vectors object associated to the nonlinear | ||
| 400 | eigensolver object. | ||
| 401 | |||
| 402 | Not Collective | ||
| 403 | |||
| 404 | Input Parameters: | ||
| 405 | . nep - eigensolver context obtained from NEPCreate() | ||
| 406 | |||
| 407 | Output Parameter: | ||
| 408 | . bv - basis vectors context | ||
| 409 | |||
| 410 | Level: advanced | ||
| 411 | |||
| 412 | .seealso: NEPSetBV() | ||
| 413 | @*/ | ||
| 414 | 1519 | PetscErrorCode NEPGetBV(NEP nep,BV *bv) | |
| 415 | { | ||
| 416 |
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1519 | PetscFunctionBegin; |
| 417 |
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1519 | PetscValidHeaderSpecific(nep,NEP_CLASSID,1); |
| 418 |
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1519 | PetscAssertPointer(bv,2); |
| 419 |
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1519 | if (!nep->V) { |
| 420 |
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1509 | PetscCall(BVCreate(PetscObjectComm((PetscObject)nep),&nep->V)); |
| 421 |
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1509 | PetscCall(PetscObjectIncrementTabLevel((PetscObject)nep->V,(PetscObject)nep,0)); |
| 422 |
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1509 | PetscCall(PetscObjectSetOptions((PetscObject)nep->V,((PetscObject)nep)->options)); |
| 423 | } | ||
| 424 | 1519 | *bv = nep->V; | |
| 425 |
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1519 | PetscFunctionReturn(PETSC_SUCCESS); |
| 426 | } | ||
| 427 | |||
| 428 | /*@ | ||
| 429 | NEPSetRG - Associates a region object to the nonlinear eigensolver. | ||
| 430 | |||
| 431 | Collective | ||
| 432 | |||
| 433 | Input Parameters: | ||
| 434 | + nep - eigensolver context obtained from NEPCreate() | ||
| 435 | - rg - the region object | ||
| 436 | |||
| 437 | Note: | ||
| 438 | Use NEPGetRG() to retrieve the region context (for example, | ||
| 439 | to free it at the end of the computations). | ||
| 440 | |||
| 441 | Level: advanced | ||
| 442 | |||
| 443 | .seealso: NEPGetRG() | ||
| 444 | @*/ | ||
| 445 | 22 | PetscErrorCode NEPSetRG(NEP nep,RG rg) | |
| 446 | { | ||
| 447 |
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22 | PetscFunctionBegin; |
| 448 |
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22 | PetscValidHeaderSpecific(nep,NEP_CLASSID,1); |
| 449 |
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22 | if (rg) { |
| 450 |
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22 | PetscValidHeaderSpecific(rg,RG_CLASSID,2); |
| 451 |
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22 | PetscCheckSameComm(nep,1,rg,2); |
| 452 | } | ||
| 453 |
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22 | PetscCall(PetscObjectReference((PetscObject)rg)); |
| 454 |
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22 | PetscCall(RGDestroy(&nep->rg)); |
| 455 | 22 | nep->rg = rg; | |
| 456 |
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22 | PetscFunctionReturn(PETSC_SUCCESS); |
| 457 | } | ||
| 458 | |||
| 459 | /*@ | ||
| 460 | NEPGetRG - Obtain the region object associated to the | ||
| 461 | nonlinear eigensolver object. | ||
| 462 | |||
| 463 | Not Collective | ||
| 464 | |||
| 465 | Input Parameters: | ||
| 466 | . nep - eigensolver context obtained from NEPCreate() | ||
| 467 | |||
| 468 | Output Parameter: | ||
| 469 | . rg - region context | ||
| 470 | |||
| 471 | Level: advanced | ||
| 472 | |||
| 473 | .seealso: NEPSetRG() | ||
| 474 | @*/ | ||
| 475 | 1303 | PetscErrorCode NEPGetRG(NEP nep,RG *rg) | |
| 476 | { | ||
| 477 |
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1303 | PetscFunctionBegin; |
| 478 |
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1303 | PetscValidHeaderSpecific(nep,NEP_CLASSID,1); |
| 479 |
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1303 | PetscAssertPointer(rg,2); |
| 480 |
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1303 | if (!nep->rg) { |
| 481 |
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1287 | PetscCall(RGCreate(PetscObjectComm((PetscObject)nep),&nep->rg)); |
| 482 |
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1287 | PetscCall(PetscObjectIncrementTabLevel((PetscObject)nep->rg,(PetscObject)nep,0)); |
| 483 |
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1287 | PetscCall(PetscObjectSetOptions((PetscObject)nep->rg,((PetscObject)nep)->options)); |
| 484 | } | ||
| 485 | 1303 | *rg = nep->rg; | |
| 486 |
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1303 | PetscFunctionReturn(PETSC_SUCCESS); |
| 487 | } | ||
| 488 | |||
| 489 | /*@ | ||
| 490 | NEPSetDS - Associates a direct solver object to the nonlinear eigensolver. | ||
| 491 | |||
| 492 | Collective | ||
| 493 | |||
| 494 | Input Parameters: | ||
| 495 | + nep - eigensolver context obtained from NEPCreate() | ||
| 496 | - ds - the direct solver object | ||
| 497 | |||
| 498 | Note: | ||
| 499 | Use NEPGetDS() to retrieve the direct solver context (for example, | ||
| 500 | to free it at the end of the computations). | ||
| 501 | |||
| 502 | Level: advanced | ||
| 503 | |||
| 504 | .seealso: NEPGetDS() | ||
| 505 | @*/ | ||
| 506 | ✗ | PetscErrorCode NEPSetDS(NEP nep,DS ds) | |
| 507 | { | ||
| 508 | ✗ | PetscFunctionBegin; | |
| 509 | ✗ | PetscValidHeaderSpecific(nep,NEP_CLASSID,1); | |
| 510 | ✗ | PetscValidHeaderSpecific(ds,DS_CLASSID,2); | |
| 511 | ✗ | PetscCheckSameComm(nep,1,ds,2); | |
| 512 | ✗ | PetscCall(PetscObjectReference((PetscObject)ds)); | |
| 513 | ✗ | PetscCall(DSDestroy(&nep->ds)); | |
| 514 | ✗ | nep->ds = ds; | |
| 515 | ✗ | PetscFunctionReturn(PETSC_SUCCESS); | |
| 516 | } | ||
| 517 | |||
| 518 | /*@ | ||
| 519 | NEPGetDS - Obtain the direct solver object associated to the | ||
| 520 | nonlinear eigensolver object. | ||
| 521 | |||
| 522 | Not Collective | ||
| 523 | |||
| 524 | Input Parameters: | ||
| 525 | . nep - eigensolver context obtained from NEPCreate() | ||
| 526 | |||
| 527 | Output Parameter: | ||
| 528 | . ds - direct solver context | ||
| 529 | |||
| 530 | Level: advanced | ||
| 531 | |||
| 532 | .seealso: NEPSetDS() | ||
| 533 | @*/ | ||
| 534 | 1069 | PetscErrorCode NEPGetDS(NEP nep,DS *ds) | |
| 535 | { | ||
| 536 |
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1069 | PetscFunctionBegin; |
| 537 |
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1069 | PetscValidHeaderSpecific(nep,NEP_CLASSID,1); |
| 538 |
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1069 | PetscAssertPointer(ds,2); |
| 539 |
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1069 | if (!nep->ds) { |
| 540 |
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1059 | PetscCall(DSCreate(PetscObjectComm((PetscObject)nep),&nep->ds)); |
| 541 |
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1059 | PetscCall(PetscObjectIncrementTabLevel((PetscObject)nep->ds,(PetscObject)nep,0)); |
| 542 |
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1059 | PetscCall(PetscObjectSetOptions((PetscObject)nep->ds,((PetscObject)nep)->options)); |
| 543 | } | ||
| 544 | 1069 | *ds = nep->ds; | |
| 545 |
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1069 | PetscFunctionReturn(PETSC_SUCCESS); |
| 546 | } | ||
| 547 | |||
| 548 | /*@ | ||
| 549 | NEPRefineGetKSP - Obtain the ksp object used by the eigensolver | ||
| 550 | object in the refinement phase. | ||
| 551 | |||
| 552 | Collective | ||
| 553 | |||
| 554 | Input Parameters: | ||
| 555 | . nep - eigensolver context obtained from NEPCreate() | ||
| 556 | |||
| 557 | Output Parameter: | ||
| 558 | . ksp - ksp context | ||
| 559 | |||
| 560 | Level: advanced | ||
| 561 | |||
| 562 | .seealso: NEPSetRefine() | ||
| 563 | @*/ | ||
| 564 | 1349 | PetscErrorCode NEPRefineGetKSP(NEP nep,KSP *ksp) | |
| 565 | { | ||
| 566 | 1349 | MPI_Comm comm; | |
| 567 | |||
| 568 |
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1349 | PetscFunctionBegin; |
| 569 |
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1349 | PetscValidHeaderSpecific(nep,NEP_CLASSID,1); |
| 570 |
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1349 | PetscAssertPointer(ksp,2); |
| 571 |
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1349 | if (!nep->refineksp) { |
| 572 |
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1309 | if (nep->npart>1) { |
| 573 | /* Split in subcomunicators */ | ||
| 574 |
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80 | PetscCall(PetscSubcommCreate(PetscObjectComm((PetscObject)nep),&nep->refinesubc)); |
| 575 |
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80 | PetscCall(PetscSubcommSetNumber(nep->refinesubc,nep->npart)); |
| 576 |
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80 | PetscCall(PetscSubcommSetType(nep->refinesubc,PETSC_SUBCOMM_CONTIGUOUS)); |
| 577 |
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80 | PetscCall(PetscSubcommGetChild(nep->refinesubc,&comm)); |
| 578 |
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1229 | } else PetscCall(PetscObjectGetComm((PetscObject)nep,&comm)); |
| 579 |
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1309 | PetscCall(KSPCreate(comm,&nep->refineksp)); |
| 580 |
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1309 | PetscCall(PetscObjectIncrementTabLevel((PetscObject)nep->refineksp,(PetscObject)nep,0)); |
| 581 |
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1309 | PetscCall(PetscObjectSetOptions((PetscObject)nep->refineksp,((PetscObject)nep)->options)); |
| 582 |
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1309 | PetscCall(KSPSetOptionsPrefix(*ksp,((PetscObject)nep)->prefix)); |
| 583 |
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1309 | PetscCall(KSPAppendOptionsPrefix(*ksp,"nep_refine_")); |
| 584 |
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2602 | PetscCall(KSPSetTolerances(nep->refineksp,SlepcDefaultTol(nep->rtol),PETSC_CURRENT,PETSC_CURRENT,PETSC_CURRENT)); |
| 585 | } | ||
| 586 | 1349 | *ksp = nep->refineksp; | |
| 587 |
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1349 | PetscFunctionReturn(PETSC_SUCCESS); |
| 588 | } | ||
| 589 | |||
| 590 | /*@ | ||
| 591 | NEPSetTarget - Sets the value of the target. | ||
| 592 | |||
| 593 | Logically Collective | ||
| 594 | |||
| 595 | Input Parameters: | ||
| 596 | + nep - eigensolver context | ||
| 597 | - target - the value of the target | ||
| 598 | |||
| 599 | Options Database Key: | ||
| 600 | . -nep_target <scalar> - the value of the target | ||
| 601 | |||
| 602 | Notes: | ||
| 603 | The target is a scalar value used to determine the portion of the spectrum | ||
| 604 | of interest. It is used in combination with NEPSetWhichEigenpairs(). | ||
| 605 | |||
| 606 | In the case of complex scalars, a complex value can be provided in the | ||
| 607 | command line with [+/-][realnumber][+/-]realnumberi with no spaces, e.g. | ||
| 608 | -nep_target 1.0+2.0i | ||
| 609 | |||
| 610 | Level: intermediate | ||
| 611 | |||
| 612 | .seealso: NEPGetTarget(), NEPSetWhichEigenpairs() | ||
| 613 | @*/ | ||
| 614 | 1039 | PetscErrorCode NEPSetTarget(NEP nep,PetscScalar target) | |
| 615 | { | ||
| 616 |
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1039 | PetscFunctionBegin; |
| 617 |
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1039 | PetscValidHeaderSpecific(nep,NEP_CLASSID,1); |
| 618 |
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1039 | PetscValidLogicalCollectiveScalar(nep,target,2); |
| 619 | 1039 | nep->target = target; | |
| 620 |
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1039 | PetscFunctionReturn(PETSC_SUCCESS); |
| 621 | } | ||
| 622 | |||
| 623 | /*@ | ||
| 624 | NEPGetTarget - Gets the value of the target. | ||
| 625 | |||
| 626 | Not Collective | ||
| 627 | |||
| 628 | Input Parameter: | ||
| 629 | . nep - eigensolver context | ||
| 630 | |||
| 631 | Output Parameter: | ||
| 632 | . target - the value of the target | ||
| 633 | |||
| 634 | Note: | ||
| 635 | If the target was not set by the user, then zero is returned. | ||
| 636 | |||
| 637 | Level: intermediate | ||
| 638 | |||
| 639 | .seealso: NEPSetTarget() | ||
| 640 | @*/ | ||
| 641 | 21 | PetscErrorCode NEPGetTarget(NEP nep,PetscScalar* target) | |
| 642 | { | ||
| 643 |
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21 | PetscFunctionBegin; |
| 644 |
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21 | PetscValidHeaderSpecific(nep,NEP_CLASSID,1); |
| 645 |
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21 | PetscAssertPointer(target,2); |
| 646 | 21 | *target = nep->target; | |
| 647 |
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21 | PetscFunctionReturn(PETSC_SUCCESS); |
| 648 | } | ||
| 649 | |||
| 650 | /*@C | ||
| 651 | NEPSetFunction - Sets the function to compute the nonlinear Function T(lambda) | ||
| 652 | as well as the location to store the matrix. | ||
| 653 | |||
| 654 | Collective | ||
| 655 | |||
| 656 | Input Parameters: | ||
| 657 | + nep - the NEP context | ||
| 658 | . A - Function matrix | ||
| 659 | . B - preconditioner matrix (usually same as A) | ||
| 660 | . fun - Function evaluation routine (if NULL then NEP retains any | ||
| 661 | previously set value), see NEPFunctionFn for the calling sequence | ||
| 662 | - ctx - [optional] user-defined context for private data for the Function | ||
| 663 | evaluation routine (may be NULL) (if NULL then NEP retains any | ||
| 664 | previously set value) | ||
| 665 | |||
| 666 | Level: beginner | ||
| 667 | |||
| 668 | .seealso: NEPGetFunction(), NEPSetJacobian() | ||
| 669 | @*/ | ||
| 670 | 453 | PetscErrorCode NEPSetFunction(NEP nep,Mat A,Mat B,NEPFunctionFn *fun,void *ctx) | |
| 671 | { | ||
| 672 |
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453 | PetscFunctionBegin; |
| 673 |
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453 | PetscValidHeaderSpecific(nep,NEP_CLASSID,1); |
| 674 |
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453 | if (A) PetscValidHeaderSpecific(A,MAT_CLASSID,2); |
| 675 |
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453 | if (B) PetscValidHeaderSpecific(B,MAT_CLASSID,3); |
| 676 |
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453 | if (A) PetscCheckSameComm(nep,1,A,2); |
| 677 |
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453 | if (B) PetscCheckSameComm(nep,1,B,3); |
| 678 | |||
| 679 |
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453 | if (nep->state) PetscCall(NEPReset(nep)); |
| 680 |
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398 | else if (nep->fui && nep->fui!=NEP_USER_INTERFACE_CALLBACK) PetscCall(NEPReset_Problem(nep)); |
| 681 | |||
| 682 |
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453 | if (fun) nep->computefunction = fun; |
| 683 |
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453 | if (ctx) nep->functionctx = ctx; |
| 684 |
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453 | if (A) { |
| 685 |
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453 | PetscCall(PetscObjectReference((PetscObject)A)); |
| 686 |
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453 | PetscCall(MatDestroy(&nep->function)); |
| 687 | 453 | nep->function = A; | |
| 688 | } | ||
| 689 |
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453 | if (B) { |
| 690 |
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453 | PetscCall(PetscObjectReference((PetscObject)B)); |
| 691 |
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453 | PetscCall(MatDestroy(&nep->function_pre)); |
| 692 | 453 | nep->function_pre = B; | |
| 693 | } | ||
| 694 | 453 | nep->fui = NEP_USER_INTERFACE_CALLBACK; | |
| 695 | 453 | nep->state = NEP_STATE_INITIAL; | |
| 696 |
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453 | PetscFunctionReturn(PETSC_SUCCESS); |
| 697 | } | ||
| 698 | |||
| 699 | /*@C | ||
| 700 | NEPGetFunction - Returns the Function matrix and optionally the user | ||
| 701 | provided context for evaluating the Function. | ||
| 702 | |||
| 703 | Collective | ||
| 704 | |||
| 705 | Input Parameter: | ||
| 706 | . nep - the nonlinear eigensolver context | ||
| 707 | |||
| 708 | Output Parameters: | ||
| 709 | + A - location to stash Function matrix (or NULL) | ||
| 710 | . B - location to stash preconditioner matrix (or NULL) | ||
| 711 | . fun - location to put Function function (or NULL) | ||
| 712 | - ctx - location to stash Function context (or NULL) | ||
| 713 | |||
| 714 | Level: advanced | ||
| 715 | |||
| 716 | .seealso: NEPSetFunction() | ||
| 717 | @*/ | ||
| 718 | 906 | PetscErrorCode NEPGetFunction(NEP nep,Mat *A,Mat *B,NEPFunctionFn **fun,void **ctx) | |
| 719 | { | ||
| 720 |
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906 | PetscFunctionBegin; |
| 721 |
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906 | PetscValidHeaderSpecific(nep,NEP_CLASSID,1); |
| 722 |
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906 | NEPCheckCallback(nep,1); |
| 723 |
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906 | if (A) *A = nep->function; |
| 724 |
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906 | if (B) *B = nep->function_pre; |
| 725 |
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906 | if (fun) *fun = nep->computefunction; |
| 726 |
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906 | if (ctx) *ctx = nep->functionctx; |
| 727 |
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906 | PetscFunctionReturn(PETSC_SUCCESS); |
| 728 | } | ||
| 729 | |||
| 730 | /*@C | ||
| 731 | NEPSetJacobian - Sets the function to compute the Jacobian T'(lambda) as well | ||
| 732 | as the location to store the matrix. | ||
| 733 | |||
| 734 | Collective | ||
| 735 | |||
| 736 | Input Parameters: | ||
| 737 | + nep - the NEP context | ||
| 738 | . A - Jacobian matrix | ||
| 739 | . jac - Jacobian evaluation routine (if NULL then NEP retains any | ||
| 740 | previously set value), see NEPJacobianFn for the calling sequence | ||
| 741 | - ctx - [optional] user-defined context for private data for the Jacobian | ||
| 742 | evaluation routine (may be NULL) (if NULL then NEP retains any | ||
| 743 | previously set value) | ||
| 744 | |||
| 745 | Level: beginner | ||
| 746 | |||
| 747 | .seealso: NEPSetFunction(), NEPGetJacobian() | ||
| 748 | @*/ | ||
| 749 | 418 | PetscErrorCode NEPSetJacobian(NEP nep,Mat A,NEPJacobianFn *jac,void *ctx) | |
| 750 | { | ||
| 751 |
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418 | PetscFunctionBegin; |
| 752 |
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418 | PetscValidHeaderSpecific(nep,NEP_CLASSID,1); |
| 753 |
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418 | if (A) PetscValidHeaderSpecific(A,MAT_CLASSID,2); |
| 754 |
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418 | if (A) PetscCheckSameComm(nep,1,A,2); |
| 755 | |||
| 756 |
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418 | if (nep->state) PetscCall(NEPReset(nep)); |
| 757 |
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418 | else if (nep->fui && nep->fui!=NEP_USER_INTERFACE_CALLBACK) PetscCall(NEPReset_Problem(nep)); |
| 758 | |||
| 759 |
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418 | if (jac) nep->computejacobian = jac; |
| 760 |
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418 | if (ctx) nep->jacobianctx = ctx; |
| 761 |
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418 | if (A) { |
| 762 |
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418 | PetscCall(PetscObjectReference((PetscObject)A)); |
| 763 |
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418 | PetscCall(MatDestroy(&nep->jacobian)); |
| 764 | 418 | nep->jacobian = A; | |
| 765 | } | ||
| 766 | 418 | nep->fui = NEP_USER_INTERFACE_CALLBACK; | |
| 767 | 418 | nep->state = NEP_STATE_INITIAL; | |
| 768 |
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418 | PetscFunctionReturn(PETSC_SUCCESS); |
| 769 | } | ||
| 770 | |||
| 771 | /*@C | ||
| 772 | NEPGetJacobian - Returns the Jacobian matrix and optionally the user | ||
| 773 | provided routine and context for evaluating the Jacobian. | ||
| 774 | |||
| 775 | Collective | ||
| 776 | |||
| 777 | Input Parameter: | ||
| 778 | . nep - the nonlinear eigensolver context | ||
| 779 | |||
| 780 | Output Parameters: | ||
| 781 | + A - location to stash Jacobian matrix (or NULL) | ||
| 782 | . jac - location to put Jacobian function (or NULL) | ||
| 783 | - ctx - location to stash Jacobian context (or NULL) | ||
| 784 | |||
| 785 | Level: advanced | ||
| 786 | |||
| 787 | .seealso: NEPSetJacobian() | ||
| 788 | @*/ | ||
| 789 | ✗ | PetscErrorCode NEPGetJacobian(NEP nep,Mat *A,NEPJacobianFn **jac,void **ctx) | |
| 790 | { | ||
| 791 | ✗ | PetscFunctionBegin; | |
| 792 | ✗ | PetscValidHeaderSpecific(nep,NEP_CLASSID,1); | |
| 793 | ✗ | NEPCheckCallback(nep,1); | |
| 794 | ✗ | if (A) *A = nep->jacobian; | |
| 795 | ✗ | if (jac) *jac = nep->computejacobian; | |
| 796 | ✗ | if (ctx) *ctx = nep->jacobianctx; | |
| 797 | ✗ | PetscFunctionReturn(PETSC_SUCCESS); | |
| 798 | } | ||
| 799 | |||
| 800 | /*@ | ||
| 801 | NEPSetSplitOperator - Sets the operator of the nonlinear eigenvalue problem | ||
| 802 | in split form. | ||
| 803 | |||
| 804 | Collective | ||
| 805 | |||
| 806 | Input Parameters: | ||
| 807 | + nep - the nonlinear eigensolver context | ||
| 808 | . nt - number of terms in the split form | ||
| 809 | . A - array of matrices | ||
| 810 | . f - array of functions | ||
| 811 | - str - structure flag for matrices | ||
| 812 | |||
| 813 | Notes: | ||
| 814 | The nonlinear operator is written as T(lambda) = sum_i A_i*f_i(lambda), | ||
| 815 | for i=1,...,n. The derivative T'(lambda) can be obtained using the | ||
| 816 | derivatives of f_i. | ||
| 817 | |||
| 818 | The structure flag provides information about A_i's nonzero pattern | ||
| 819 | (see MatStructure enum). If all matrices have the same pattern, then | ||
| 820 | use SAME_NONZERO_PATTERN. If the patterns are different but contained | ||
| 821 | in the pattern of the first one, then use SUBSET_NONZERO_PATTERN. If | ||
| 822 | patterns are known to be different, use DIFFERENT_NONZERO_PATTERN. | ||
| 823 | If set to UNKNOWN_NONZERO_PATTERN, the patterns will be compared to | ||
| 824 | determine if they are equal. | ||
| 825 | |||
| 826 | This function must be called before NEPSetUp(). If it is called again | ||
| 827 | after NEPSetUp() then the NEP object is reset. | ||
| 828 | |||
| 829 | Level: beginner | ||
| 830 | |||
| 831 | .seealso: NEPGetSplitOperatorTerm(), NEPGetSplitOperatorInfo(), NEPSetSplitPreconditioner() | ||
| 832 | @*/ | ||
| 833 | 1042 | PetscErrorCode NEPSetSplitOperator(NEP nep,PetscInt nt,Mat A[],FN f[],MatStructure str) | |
| 834 | { | ||
| 835 | 1042 | PetscInt i,n=0,m,m0=0,mloc,nloc,mloc0=0; | |
| 836 | |||
| 837 |
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1042 | PetscFunctionBegin; |
| 838 |
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1042 | PetscValidHeaderSpecific(nep,NEP_CLASSID,1); |
| 839 |
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1042 | PetscValidLogicalCollectiveInt(nep,nt,2); |
| 840 |
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1042 | PetscCheck(nt>0,PetscObjectComm((PetscObject)nep),PETSC_ERR_ARG_OUTOFRANGE,"Must have one or more terms, you have %" PetscInt_FMT,nt); |
| 841 |
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202 | PetscAssertPointer(A,3); |
| 842 |
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202 | PetscAssertPointer(f,4); |
| 843 |
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202 | PetscValidLogicalCollectiveEnum(nep,str,5); |
| 844 | |||
| 845 |
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4056 | for (i=0;i<nt;i++) { |
| 846 |
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3014 | PetscValidHeaderSpecific(A[i],MAT_CLASSID,3); |
| 847 |
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3014 | PetscCheckSameComm(nep,1,A[i],3); |
| 848 |
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3014 | PetscValidHeaderSpecific(f[i],FN_CLASSID,4); |
| 849 |
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3014 | PetscCheckSameComm(nep,1,f[i],4); |
| 850 |
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3014 | PetscCall(MatGetSize(A[i],&m,&n)); |
| 851 |
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3014 | PetscCall(MatGetLocalSize(A[i],&mloc,&nloc)); |
| 852 |
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3014 | PetscCheck(m==n,PetscObjectComm((PetscObject)nep),PETSC_ERR_ARG_WRONG,"A[%" PetscInt_FMT "] is a non-square matrix (%" PetscInt_FMT " rows, %" PetscInt_FMT " cols)",i,m,n); |
| 853 |
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3014 | PetscCheck(mloc==nloc,PetscObjectComm((PetscObject)nep),PETSC_ERR_ARG_WRONG,"A[%" PetscInt_FMT "] does not have equal row and column local sizes (%" PetscInt_FMT ", %" PetscInt_FMT ")",i,mloc,nloc); |
| 854 |
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3014 | if (!i) { m0 = m; mloc0 = mloc; } |
| 855 |
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3014 | PetscCheck(m==m0,PetscObjectComm((PetscObject)nep),PETSC_ERR_ARG_INCOMP,"Dimensions of A[%" PetscInt_FMT "] do not match with previous matrices (%" PetscInt_FMT ", %" PetscInt_FMT ")",i,m,m0); |
| 856 |
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3014 | PetscCheck(mloc==mloc0,PetscObjectComm((PetscObject)nep),PETSC_ERR_ARG_INCOMP,"Local dimensions of A[%" PetscInt_FMT "] do not match with previous matrices (%" PetscInt_FMT ", %" PetscInt_FMT ")",i,mloc,mloc0); |
| 857 |
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3014 | PetscCall(PetscObjectReference((PetscObject)A[i])); |
| 858 |
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3014 | PetscCall(PetscObjectReference((PetscObject)f[i])); |
| 859 | } | ||
| 860 | |||
| 861 |
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|
1042 | if (nep->state && (n!=nep->n || nloc!=nep->nloc)) PetscCall(NEPReset(nep)); |
| 862 |
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|
897 | else PetscCall(NEPReset_Problem(nep)); |
| 863 | |||
| 864 | /* allocate space and copy matrices and functions */ | ||
| 865 |
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1042 | PetscCall(PetscMalloc1(nt,&nep->A)); |
| 866 |
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4056 | for (i=0;i<nt;i++) nep->A[i] = A[i]; |
| 867 |
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1042 | PetscCall(PetscMalloc1(nt,&nep->f)); |
| 868 |
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4056 | for (i=0;i<nt;i++) nep->f[i] = f[i]; |
| 869 |
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|
1042 | PetscCall(PetscCalloc1(nt,&nep->nrma)); |
| 870 | 1042 | nep->nt = nt; | |
| 871 | 1042 | nep->mstr = str; | |
| 872 | 1042 | nep->fui = NEP_USER_INTERFACE_SPLIT; | |
| 873 | 1042 | nep->state = NEP_STATE_INITIAL; | |
| 874 |
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|
1042 | PetscFunctionReturn(PETSC_SUCCESS); |
| 875 | } | ||
| 876 | |||
| 877 | /*@ | ||
| 878 | NEPGetSplitOperatorTerm - Gets the matrices and functions associated with | ||
| 879 | the nonlinear operator in split form. | ||
| 880 | |||
| 881 | Collective | ||
| 882 | |||
| 883 | Input Parameters: | ||
| 884 | + nep - the nonlinear eigensolver context | ||
| 885 | - k - the index of the requested term (starting in 0) | ||
| 886 | |||
| 887 | Output Parameters: | ||
| 888 | + A - the matrix of the requested term | ||
| 889 | - f - the function of the requested term | ||
| 890 | |||
| 891 | Level: intermediate | ||
| 892 | |||
| 893 | .seealso: NEPSetSplitOperator(), NEPGetSplitOperatorInfo() | ||
| 894 | @*/ | ||
| 895 | 268 | PetscErrorCode NEPGetSplitOperatorTerm(NEP nep,PetscInt k,Mat *A,FN *f) | |
| 896 | { | ||
| 897 |
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268 | PetscFunctionBegin; |
| 898 |
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268 | PetscValidHeaderSpecific(nep,NEP_CLASSID,1); |
| 899 |
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|
268 | PetscValidLogicalCollectiveInt(nep,k,2); |
| 900 |
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268 | NEPCheckSplit(nep,1); |
| 901 |
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268 | PetscCheck(k>=0 && k<nep->nt,PetscObjectComm((PetscObject)nep),PETSC_ERR_ARG_OUTOFRANGE,"k must be between 0 and %" PetscInt_FMT,nep->nt-1); |
| 902 |
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268 | if (A) *A = nep->A[k]; |
| 903 |
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268 | if (f) *f = nep->f[k]; |
| 904 |
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|
54 | PetscFunctionReturn(PETSC_SUCCESS); |
| 905 | } | ||
| 906 | |||
| 907 | /*@ | ||
| 908 | NEPGetSplitOperatorInfo - Returns the number of terms of the split form of | ||
| 909 | the nonlinear operator, as well as the structure flag for matrices. | ||
| 910 | |||
| 911 | Not Collective | ||
| 912 | |||
| 913 | Input Parameter: | ||
| 914 | . nep - the nonlinear eigensolver context | ||
| 915 | |||
| 916 | Output Parameters: | ||
| 917 | + n - the number of terms passed in NEPSetSplitOperator() | ||
| 918 | - str - the matrix structure flag passed in NEPSetSplitOperator() | ||
| 919 | |||
| 920 | Level: intermediate | ||
| 921 | |||
| 922 | .seealso: NEPSetSplitOperator(), NEPGetSplitOperatorTerm() | ||
| 923 | @*/ | ||
| 924 | 99 | PetscErrorCode NEPGetSplitOperatorInfo(NEP nep,PetscInt *n,MatStructure *str) | |
| 925 | { | ||
| 926 |
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99 | PetscFunctionBegin; |
| 927 |
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99 | PetscValidHeaderSpecific(nep,NEP_CLASSID,1); |
| 928 |
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99 | NEPCheckSplit(nep,1); |
| 929 |
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99 | if (n) *n = nep->nt; |
| 930 |
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99 | if (str) *str = nep->mstr; |
| 931 |
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99 | PetscFunctionReturn(PETSC_SUCCESS); |
| 932 | } | ||
| 933 | |||
| 934 | /*@ | ||
| 935 | NEPSetSplitPreconditioner - Sets an operator in split form from which | ||
| 936 | to build the preconditioner to be used when solving the nonlinear | ||
| 937 | eigenvalue problem in split form. | ||
| 938 | |||
| 939 | Collective | ||
| 940 | |||
| 941 | Input Parameters: | ||
| 942 | + nep - the nonlinear eigensolver context | ||
| 943 | . ntp - number of terms in the split preconditioner | ||
| 944 | . P - array of matrices | ||
| 945 | - strp - structure flag for matrices | ||
| 946 | |||
| 947 | Notes: | ||
| 948 | The matrix for the preconditioner is expressed as P(lambda) = | ||
| 949 | sum_i P_i*f_i(lambda), for i=1,...,n, where the f_i functions | ||
| 950 | are the same as in NEPSetSplitOperator(). It is not necessary to call | ||
| 951 | this function. If it is not invoked, then the preconditioner is | ||
| 952 | built from T(lambda), i.e., both matrices and functions passed in | ||
| 953 | NEPSetSplitOperator(). | ||
| 954 | |||
| 955 | The structure flag provides information about P_i's nonzero pattern | ||
| 956 | in the same way as in NEPSetSplitOperator(). | ||
| 957 | |||
| 958 | If the functions defining the preconditioner operator were different | ||
| 959 | from the ones given in NEPSetSplitOperator(), then the split form | ||
| 960 | cannot be used. Use the callback interface instead. | ||
| 961 | |||
| 962 | Use ntp=0 to reset a previously set split preconditioner. | ||
| 963 | |||
| 964 | Level: advanced | ||
| 965 | |||
| 966 | .seealso: NEPGetSplitPreconditionerTerm(), NEPGetSplitPreconditionerInfo(), NEPSetSplitOperator() | ||
| 967 | @*/ | ||
| 968 | 55 | PetscErrorCode NEPSetSplitPreconditioner(NEP nep,PetscInt ntp,Mat P[],MatStructure strp) | |
| 969 | { | ||
| 970 | 55 | PetscInt i,n=0,m,m0=0,mloc,nloc,mloc0=0; | |
| 971 | |||
| 972 |
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55 | PetscFunctionBegin; |
| 973 |
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55 | PetscValidHeaderSpecific(nep,NEP_CLASSID,1); |
| 974 |
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|
55 | PetscValidLogicalCollectiveInt(nep,ntp,2); |
| 975 |
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55 | PetscCheck(ntp>=0,PetscObjectComm((PetscObject)nep),PETSC_ERR_ARG_OUTOFRANGE,"Negative value of ntp = %" PetscInt_FMT,ntp); |
| 976 |
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55 | PetscCheck(nep->fui==NEP_USER_INTERFACE_SPLIT,PetscObjectComm((PetscObject)nep),PETSC_ERR_ORDER,"Must call NEPSetSplitOperator first"); |
| 977 |
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55 | PetscCheck(ntp==0 || nep->nt==ntp,PetscObjectComm((PetscObject)nep),PETSC_ERR_SUP,"The number of terms must be the same as in NEPSetSplitOperator()"); |
| 978 |
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11 | if (ntp) PetscAssertPointer(P,3); |
| 979 |
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11 | PetscValidLogicalCollectiveEnum(nep,strp,4); |
| 980 | |||
| 981 |
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220 | for (i=0;i<ntp;i++) { |
| 982 |
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165 | PetscValidHeaderSpecific(P[i],MAT_CLASSID,3); |
| 983 |
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165 | PetscCheckSameComm(nep,1,P[i],3); |
| 984 |
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165 | PetscCall(MatGetSize(P[i],&m,&n)); |
| 985 |
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165 | PetscCall(MatGetLocalSize(P[i],&mloc,&nloc)); |
| 986 |
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165 | PetscCheck(m==n,PetscObjectComm((PetscObject)nep),PETSC_ERR_ARG_WRONG,"P[%" PetscInt_FMT "] is a non-square matrix (%" PetscInt_FMT " rows, %" PetscInt_FMT " cols)",i,m,n); |
| 987 |
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165 | PetscCheck(mloc==nloc,PetscObjectComm((PetscObject)nep),PETSC_ERR_ARG_WRONG,"P[%" PetscInt_FMT "] does not have equal row and column local sizes (%" PetscInt_FMT ", %" PetscInt_FMT ")",i,mloc,nloc); |
| 988 |
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165 | if (!i) { m0 = m; mloc0 = mloc; } |
| 989 |
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165 | PetscCheck(m==m0,PetscObjectComm((PetscObject)nep),PETSC_ERR_ARG_INCOMP,"Dimensions of P[%" PetscInt_FMT "] do not match with previous matrices (%" PetscInt_FMT ", %" PetscInt_FMT ")",i,m,m0); |
| 990 |
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165 | PetscCheck(mloc==mloc0,PetscObjectComm((PetscObject)nep),PETSC_ERR_ARG_INCOMP,"Local dimensions of P[%" PetscInt_FMT "] do not match with previous matrices (%" PetscInt_FMT ", %" PetscInt_FMT ")",i,mloc,mloc0); |
| 991 |
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165 | PetscCall(PetscObjectReference((PetscObject)P[i])); |
| 992 | } | ||
| 993 | |||
| 994 |
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55 | PetscCheck(!nep->state,PetscObjectComm((PetscObject)nep),PETSC_ERR_ORDER,"To call this function after NEPSetUp(), you must call NEPSetSplitOperator() again"); |
| 995 |
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55 | if (nep->P) PetscCall(MatDestroyMatrices(nep->nt,&nep->P)); |
| 996 | |||
| 997 | /* allocate space and copy matrices */ | ||
| 998 |
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55 | if (ntp) { |
| 999 |
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55 | PetscCall(PetscMalloc1(ntp,&nep->P)); |
| 1000 |
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220 | for (i=0;i<ntp;i++) nep->P[i] = P[i]; |
| 1001 | } | ||
| 1002 | 55 | nep->mstrp = strp; | |
| 1003 | 55 | nep->state = NEP_STATE_INITIAL; | |
| 1004 |
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55 | PetscFunctionReturn(PETSC_SUCCESS); |
| 1005 | } | ||
| 1006 | |||
| 1007 | /*@ | ||
| 1008 | NEPGetSplitPreconditionerTerm - Gets the matrices associated with | ||
| 1009 | the split preconditioner. | ||
| 1010 | |||
| 1011 | Not Collective | ||
| 1012 | |||
| 1013 | Input Parameters: | ||
| 1014 | + nep - the nonlinear eigensolver context | ||
| 1015 | - k - the index of the requested term (starting in 0) | ||
| 1016 | |||
| 1017 | Output Parameter: | ||
| 1018 | . P - the matrix of the requested term | ||
| 1019 | |||
| 1020 | Level: advanced | ||
| 1021 | |||
| 1022 | .seealso: NEPSetSplitPreconditioner(), NEPGetSplitPreconditionerInfo() | ||
| 1023 | @*/ | ||
| 1024 | 55 | PetscErrorCode NEPGetSplitPreconditionerTerm(NEP nep,PetscInt k,Mat *P) | |
| 1025 | { | ||
| 1026 |
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55 | PetscFunctionBegin; |
| 1027 |
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55 | PetscValidHeaderSpecific(nep,NEP_CLASSID,1); |
| 1028 |
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55 | PetscValidLogicalCollectiveInt(nep,k,2); |
| 1029 |
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55 | PetscAssertPointer(P,3); |
| 1030 |
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55 | NEPCheckSplit(nep,1); |
| 1031 |
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55 | PetscCheck(k>=0 && k<nep->nt,PetscObjectComm((PetscObject)nep),PETSC_ERR_ARG_OUTOFRANGE,"k must be between 0 and %" PetscInt_FMT,nep->nt-1); |
| 1032 |
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55 | PetscCheck(nep->P,PetscObjectComm((PetscObject)nep),PETSC_ERR_ORDER,"You have not called NEPSetSplitPreconditioner()"); |
| 1033 | 55 | *P = nep->P[k]; | |
| 1034 |
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55 | PetscFunctionReturn(PETSC_SUCCESS); |
| 1035 | } | ||
| 1036 | |||
| 1037 | /*@ | ||
| 1038 | NEPGetSplitPreconditionerInfo - Returns the number of terms of the split | ||
| 1039 | preconditioner, as well as the structure flag for matrices. | ||
| 1040 | |||
| 1041 | Not Collective | ||
| 1042 | |||
| 1043 | Input Parameter: | ||
| 1044 | . nep - the nonlinear eigensolver context | ||
| 1045 | |||
| 1046 | Output Parameters: | ||
| 1047 | + n - the number of terms passed in NEPSetSplitPreconditioner() | ||
| 1048 | - strp - the matrix structure flag passed in NEPSetSplitPreconditioner() | ||
| 1049 | |||
| 1050 | Level: advanced | ||
| 1051 | |||
| 1052 | .seealso: NEPSetSplitPreconditioner(), NEPGetSplitPreconditionerTerm() | ||
| 1053 | @*/ | ||
| 1054 | 55 | PetscErrorCode NEPGetSplitPreconditionerInfo(NEP nep,PetscInt *n,MatStructure *strp) | |
| 1055 | { | ||
| 1056 |
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55 | PetscFunctionBegin; |
| 1057 |
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55 | PetscValidHeaderSpecific(nep,NEP_CLASSID,1); |
| 1058 |
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55 | NEPCheckSplit(nep,1); |
| 1059 |
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55 | if (n) *n = nep->P? nep->nt: 0; |
| 1060 |
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55 | if (strp) *strp = nep->mstrp; |
| 1061 |
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55 | PetscFunctionReturn(PETSC_SUCCESS); |
| 1062 | } | ||
| 1063 |