| 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 EPS routines | ||
| 12 | */ | ||
| 13 | |||
| 14 | #include <slepc/private/epsimpl.h> /*I "slepceps.h" I*/ | ||
| 15 | |||
| 16 | /* Logging support */ | ||
| 17 | PetscClassId EPS_CLASSID = 0; | ||
| 18 | PetscLogEvent EPS_SetUp = 0,EPS_Solve = 0,EPS_CISS_SVD = 0; | ||
| 19 | |||
| 20 | /* List of registered EPS routines */ | ||
| 21 | PetscFunctionList EPSList = NULL; | ||
| 22 | PetscBool EPSRegisterAllCalled = PETSC_FALSE; | ||
| 23 | |||
| 24 | /* List of registered EPS monitors */ | ||
| 25 | PetscFunctionList EPSMonitorList = NULL; | ||
| 26 | PetscFunctionList EPSMonitorCreateList = NULL; | ||
| 27 | PetscFunctionList EPSMonitorDestroyList = NULL; | ||
| 28 | PetscBool EPSMonitorRegisterAllCalled = PETSC_FALSE; | ||
| 29 | |||
| 30 | /*@ | ||
| 31 | EPSCreate - Creates the `EPS` context. | ||
| 32 | |||
| 33 | Collective | ||
| 34 | |||
| 35 | Input Parameter: | ||
| 36 | . comm - MPI communicator | ||
| 37 | |||
| 38 | Output Parameter: | ||
| 39 | . outeps - location to put the `EPS` context | ||
| 40 | |||
| 41 | Note: | ||
| 42 | The default `EPS` type is `EPSKRYLOVSCHUR`. | ||
| 43 | |||
| 44 | Level: beginner | ||
| 45 | |||
| 46 | .seealso: [](ch:eps), `EPSSetUp()`, `EPSSolve()`, `EPSDestroy()`, `EPS` | ||
| 47 | @*/ | ||
| 48 | 5734 | PetscErrorCode EPSCreate(MPI_Comm comm,EPS *outeps) | |
| 49 | { | ||
| 50 | 5734 | EPS eps; | |
| 51 | |||
| 52 |
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5734 | PetscFunctionBegin; |
| 53 |
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5734 | PetscAssertPointer(outeps,2); |
| 54 |
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5734 | PetscCall(EPSInitializePackage()); |
| 55 |
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5734 | PetscCall(SlepcHeaderCreate(eps,EPS_CLASSID,"EPS","Eigenvalue Problem Solver","EPS",comm,EPSDestroy,EPSView)); |
| 56 | |||
| 57 | 5734 | eps->max_it = PETSC_DETERMINE; | |
| 58 | 5734 | eps->nev = 0; | |
| 59 | 5734 | eps->ncv = PETSC_DETERMINE; | |
| 60 | 5734 | eps->mpd = PETSC_DETERMINE; | |
| 61 | 5734 | eps->nini = 0; | |
| 62 | 5734 | eps->nds = 0; | |
| 63 | 5734 | eps->target = 0.0; | |
| 64 | 5734 | eps->tol = PETSC_DETERMINE; | |
| 65 | 5734 | eps->thres = PETSC_MIN_REAL; | |
| 66 | 5734 | eps->threlative = PETSC_FALSE; | |
| 67 | 5734 | eps->conv = EPS_CONV_REL; | |
| 68 | 5734 | eps->stop = EPS_STOP_BASIC; | |
| 69 | 5734 | eps->which = (EPSWhich)0; | |
| 70 | 5734 | eps->inta = 0.0; | |
| 71 | 5734 | eps->intb = 0.0; | |
| 72 | 5734 | eps->problem_type = (EPSProblemType)0; | |
| 73 | 5734 | eps->extraction = EPS_RITZ; | |
| 74 | 5734 | eps->balance = EPS_BALANCE_NONE; | |
| 75 | 5734 | eps->balance_its = 5; | |
| 76 | 5734 | eps->balance_cutoff = 1e-8; | |
| 77 | 5734 | eps->trueres = PETSC_FALSE; | |
| 78 | 5734 | eps->trackall = PETSC_FALSE; | |
| 79 | 5734 | eps->purify = PETSC_TRUE; | |
| 80 | 5734 | eps->twosided = PETSC_FALSE; | |
| 81 | |||
| 82 | 5734 | eps->converged = EPSConvergedRelative; | |
| 83 | 5734 | eps->convergeduser = NULL; | |
| 84 | 5734 | eps->convergeddestroy= NULL; | |
| 85 | 5734 | eps->stopping = EPSStoppingBasic; | |
| 86 | 5734 | eps->stoppinguser = NULL; | |
| 87 | 5734 | eps->stoppingdestroy = NULL; | |
| 88 | 5734 | eps->arbitrary = NULL; | |
| 89 | 5734 | eps->arbitrarydestroy= NULL; | |
| 90 | 5734 | eps->convergedctx = NULL; | |
| 91 | 5734 | eps->stoppingctx = NULL; | |
| 92 | 5734 | eps->arbitraryctx = NULL; | |
| 93 | 5734 | eps->numbermonitors = 0; | |
| 94 | |||
| 95 | 5734 | eps->st = NULL; | |
| 96 | 5734 | eps->ds = NULL; | |
| 97 | 5734 | eps->V = NULL; | |
| 98 | 5734 | eps->W = NULL; | |
| 99 | 5734 | eps->rg = NULL; | |
| 100 | 5734 | eps->D = NULL; | |
| 101 | 5734 | eps->IS = NULL; | |
| 102 | 5734 | eps->ISL = NULL; | |
| 103 | 5734 | eps->defl = NULL; | |
| 104 | 5734 | eps->eigr = NULL; | |
| 105 | 5734 | eps->eigi = NULL; | |
| 106 | 5734 | eps->errest = NULL; | |
| 107 | 5734 | eps->rr = NULL; | |
| 108 | 5734 | eps->ri = NULL; | |
| 109 | 5734 | eps->perm = NULL; | |
| 110 | 5734 | eps->nwork = 0; | |
| 111 | 5734 | eps->work = NULL; | |
| 112 | 5734 | eps->data = NULL; | |
| 113 | |||
| 114 | 5734 | eps->state = EPS_STATE_INITIAL; | |
| 115 | 5734 | eps->categ = EPS_CATEGORY_KRYLOV; | |
| 116 | 5734 | eps->nconv = 0; | |
| 117 | 5734 | eps->its = 0; | |
| 118 | 5734 | eps->nloc = 0; | |
| 119 | 5734 | eps->nrma = 0.0; | |
| 120 | 5734 | eps->nrmb = 0.0; | |
| 121 | 5734 | eps->useds = PETSC_FALSE; | |
| 122 | 5734 | eps->isgeneralized = PETSC_FALSE; | |
| 123 | 5734 | eps->ispositive = PETSC_FALSE; | |
| 124 | 5734 | eps->ishermitian = PETSC_FALSE; | |
| 125 | 5734 | eps->isstructured = PETSC_FALSE; | |
| 126 | 5734 | eps->reason = EPS_CONVERGED_ITERATING; | |
| 127 | |||
| 128 |
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5734 | PetscCall(PetscNew(&eps->sc)); |
| 129 | 5734 | *outeps = eps; | |
| 130 |
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5734 | PetscFunctionReturn(PETSC_SUCCESS); |
| 131 | } | ||
| 132 | |||
| 133 | /*@ | ||
| 134 | EPSSetType - Selects the particular solver to be used in the `EPS` object. | ||
| 135 | |||
| 136 | Logically Collective | ||
| 137 | |||
| 138 | Input Parameters: | ||
| 139 | + eps - the linear eigensolver context | ||
| 140 | - type - a known method | ||
| 141 | |||
| 142 | Options Database Key: | ||
| 143 | . -eps_type \<type\> - sets the method; use `-help` for a list of available methods | ||
| 144 | |||
| 145 | Notes: | ||
| 146 | See `EPSType` for available methods. The default is `EPSKRYLOVSCHUR`. | ||
| 147 | |||
| 148 | Normally, it is best to use the `EPSSetFromOptions()` command and | ||
| 149 | then set the `EPS` type from the options database rather than by using | ||
| 150 | this routine. Using the options database provides the user with | ||
| 151 | maximum flexibility in evaluating the different available methods. | ||
| 152 | The `EPSSetType()` routine is provided for those situations where it | ||
| 153 | is necessary to set the iterative solver independently of the command | ||
| 154 | line or options database. | ||
| 155 | |||
| 156 | Level: intermediate | ||
| 157 | |||
| 158 | .seealso: [](ch:eps), `STSetType()`, `EPSType` | ||
| 159 | @*/ | ||
| 160 | 5874 | PetscErrorCode EPSSetType(EPS eps,EPSType type) | |
| 161 | { | ||
| 162 | 5874 | PetscErrorCode (*r)(EPS); | |
| 163 | 5874 | PetscBool match; | |
| 164 | |||
| 165 |
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5874 | PetscFunctionBegin; |
| 166 |
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5874 | PetscValidHeaderSpecific(eps,EPS_CLASSID,1); |
| 167 |
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5874 | PetscAssertPointer(type,2); |
| 168 | |||
| 169 |
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5874 | PetscCall(PetscObjectTypeCompare((PetscObject)eps,type,&match)); |
| 170 |
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5874 | if (match) PetscFunctionReturn(PETSC_SUCCESS); |
| 171 | |||
| 172 |
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5651 | PetscCall(PetscFunctionListFind(EPSList,type,&r)); |
| 173 |
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5651 | PetscCheck(r,PetscObjectComm((PetscObject)eps),PETSC_ERR_ARG_UNKNOWN_TYPE,"Unknown EPS type given: %s",type); |
| 174 | |||
| 175 |
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5651 | PetscTryTypeMethod(eps,destroy); |
| 176 |
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5651 | PetscCall(PetscMemzero(eps->ops,sizeof(struct _EPSOps))); |
| 177 | |||
| 178 | 5651 | eps->state = EPS_STATE_INITIAL; | |
| 179 |
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5651 | PetscCall(PetscObjectChangeTypeName((PetscObject)eps,type)); |
| 180 |
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5651 | PetscCall((*r)(eps)); |
| 181 |
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1377 | PetscFunctionReturn(PETSC_SUCCESS); |
| 182 | } | ||
| 183 | |||
| 184 | /*@ | ||
| 185 | EPSGetType - Gets the `EPS` type as a string from the `EPS` object. | ||
| 186 | |||
| 187 | Not Collective | ||
| 188 | |||
| 189 | Input Parameter: | ||
| 190 | . eps - the linear eigensolver context | ||
| 191 | |||
| 192 | Output Parameter: | ||
| 193 | . type - name of `EPS` method | ||
| 194 | |||
| 195 | Level: intermediate | ||
| 196 | |||
| 197 | .seealso: [](ch:eps), `EPSSetType()` | ||
| 198 | @*/ | ||
| 199 | 932 | PetscErrorCode EPSGetType(EPS eps,EPSType *type) | |
| 200 | { | ||
| 201 |
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932 | PetscFunctionBegin; |
| 202 |
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932 | PetscValidHeaderSpecific(eps,EPS_CLASSID,1); |
| 203 |
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932 | PetscAssertPointer(type,2); |
| 204 | 932 | *type = ((PetscObject)eps)->type_name; | |
| 205 |
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932 | PetscFunctionReturn(PETSC_SUCCESS); |
| 206 | } | ||
| 207 | |||
| 208 | /*@C | ||
| 209 | EPSRegister - Adds a method to the eigenproblem solver package. | ||
| 210 | |||
| 211 | Not Collective | ||
| 212 | |||
| 213 | Input Parameters: | ||
| 214 | + name - name of a new user-defined solver | ||
| 215 | - function - routine to create the solver context | ||
| 216 | |||
| 217 | Note: | ||
| 218 | `EPSRegister()` may be called multiple times to add several user-defined solvers. | ||
| 219 | |||
| 220 | Example Usage: | ||
| 221 | .vb | ||
| 222 | EPSRegister("my_solver",MySolverCreate); | ||
| 223 | .ve | ||
| 224 | |||
| 225 | Then, your solver can be chosen with the procedural interface via | ||
| 226 | .vb | ||
| 227 | EPSSetType(eps,"my_solver") | ||
| 228 | .ve | ||
| 229 | or at runtime via the option `-eps_type my_solver`. | ||
| 230 | |||
| 231 | Level: advanced | ||
| 232 | |||
| 233 | .seealso: [](ch:eps), `EPSRegisterAll()` | ||
| 234 | @*/ | ||
| 235 | 80571 | PetscErrorCode EPSRegister(const char *name,PetscErrorCode (*function)(EPS)) | |
| 236 | { | ||
| 237 |
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80571 | PetscFunctionBegin; |
| 238 |
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80571 | PetscCall(EPSInitializePackage()); |
| 239 |
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80571 | PetscCall(PetscFunctionListAdd(&EPSList,name,function)); |
| 240 |
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19853 | PetscFunctionReturn(PETSC_SUCCESS); |
| 241 | } | ||
| 242 | |||
| 243 | /*@C | ||
| 244 | EPSMonitorRegister - Registers an `EPS` monitor routine that may be accessed with | ||
| 245 | `EPSMonitorSetFromOptions()`. | ||
| 246 | |||
| 247 | Not Collective | ||
| 248 | |||
| 249 | Input Parameters: | ||
| 250 | + name - name of a new monitor routine | ||
| 251 | . vtype - a `PetscViewerType` for the output | ||
| 252 | . format - a `PetscViewerFormat` for the output | ||
| 253 | . monitor - monitor routine, see `EPSMonitorRegisterFn` | ||
| 254 | . create - creation routine, or `NULL` | ||
| 255 | - destroy - destruction routine, or `NULL` | ||
| 256 | |||
| 257 | Notes: | ||
| 258 | `EPSMonitorRegister()` may be called multiple times to add several user-defined monitors. | ||
| 259 | |||
| 260 | The calling sequence for the given function matches the calling sequence of `EPSMonitorFn` | ||
| 261 | functions passed to `EPSMonitorSet()` with the additional requirement that its final argument | ||
| 262 | be a `PetscViewerAndFormat`. | ||
| 263 | |||
| 264 | Example Usage: | ||
| 265 | .vb | ||
| 266 | EPSMonitorRegister("my_monitor",PETSCVIEWERASCII,PETSC_VIEWER_ASCII_INFO_DETAIL,MyMonitor,NULL,NULL); | ||
| 267 | .ve | ||
| 268 | |||
| 269 | Then, your monitor can be chosen with the procedural interface via | ||
| 270 | .vb | ||
| 271 | EPSMonitorSetFromOptions(eps,"-eps_monitor_my_monitor","my_monitor",NULL) | ||
| 272 | .ve | ||
| 273 | or at runtime via the option `-eps_monitor_my_monitor`. | ||
| 274 | |||
| 275 | Level: advanced | ||
| 276 | |||
| 277 | .seealso: [](ch:eps), `EPSMonitorSet()`, `EPSMonitorRegisterAll()`, `EPSMonitorSetFromOptions()` | ||
| 278 | @*/ | ||
| 279 | 31386 | PetscErrorCode EPSMonitorRegister(const char name[],PetscViewerType vtype,PetscViewerFormat format,EPSMonitorRegisterFn *monitor,EPSMonitorRegisterCreateFn *create,EPSMonitorRegisterDestroyFn *destroy) | |
| 280 | { | ||
| 281 | 31386 | char key[PETSC_MAX_PATH_LEN]; | |
| 282 | |||
| 283 |
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31386 | PetscFunctionBegin; |
| 284 |
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31386 | PetscCall(EPSInitializePackage()); |
| 285 |
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31386 | PetscCall(SlepcMonitorMakeKey_Internal(name,vtype,format,key)); |
| 286 |
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31386 | PetscCall(PetscFunctionListAdd(&EPSMonitorList,key,monitor)); |
| 287 |
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31386 | if (create) PetscCall(PetscFunctionListAdd(&EPSMonitorCreateList,key,create)); |
| 288 |
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31386 | if (destroy) PetscCall(PetscFunctionListAdd(&EPSMonitorDestroyList,key,destroy)); |
| 289 |
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7680 | PetscFunctionReturn(PETSC_SUCCESS); |
| 290 | } | ||
| 291 | |||
| 292 | /*@ | ||
| 293 | EPSReset - Resets the `EPS` context to the initial state (prior to setup) | ||
| 294 | and destroys any allocated `Vec`s and `Mat`s. | ||
| 295 | |||
| 296 | Collective | ||
| 297 | |||
| 298 | Input Parameter: | ||
| 299 | . eps - the linear eigensolver context | ||
| 300 | |||
| 301 | Note: | ||
| 302 | This can be used when a problem of different matrix size wants to be solved. | ||
| 303 | All options that have previously been set are preserved, so in a next use | ||
| 304 | the solver configuration is the same, but new sizes for matrices and vectors | ||
| 305 | are allowed. | ||
| 306 | |||
| 307 | Level: advanced | ||
| 308 | |||
| 309 | .seealso: [](ch:eps), `EPSDestroy()` | ||
| 310 | @*/ | ||
| 311 | 7208 | PetscErrorCode EPSReset(EPS eps) | |
| 312 | { | ||
| 313 |
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7208 | PetscFunctionBegin; |
| 314 |
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7208 | if (eps) PetscValidHeaderSpecific(eps,EPS_CLASSID,1); |
| 315 |
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5482 | if (!eps) PetscFunctionReturn(PETSC_SUCCESS); |
| 316 |
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7208 | PetscTryTypeMethod(eps,reset); |
| 317 |
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7208 | if (eps->st) PetscCall(STReset(eps->st)); |
| 318 |
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7208 | PetscCall(VecDestroy(&eps->D)); |
| 319 |
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7208 | PetscCall(BVDestroy(&eps->V)); |
| 320 |
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7208 | PetscCall(BVDestroy(&eps->W)); |
| 321 |
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|
7208 | PetscCall(VecDestroyVecs(eps->nwork,&eps->work)); |
| 322 | 7208 | eps->nwork = 0; | |
| 323 | 7208 | eps->state = EPS_STATE_INITIAL; | |
| 324 |
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7208 | PetscFunctionReturn(PETSC_SUCCESS); |
| 325 | } | ||
| 326 | |||
| 327 | /*@ | ||
| 328 | EPSDestroy - Destroys the `EPS` context. | ||
| 329 | |||
| 330 | Collective | ||
| 331 | |||
| 332 | Input Parameter: | ||
| 333 | . eps - the linear eigensolver context | ||
| 334 | |||
| 335 | Level: beginner | ||
| 336 | |||
| 337 | .seealso: [](ch:eps), `EPSCreate()`, `EPSSetUp()`, `EPSSolve()` | ||
| 338 | @*/ | ||
| 339 | 6388 | PetscErrorCode EPSDestroy(EPS *eps) | |
| 340 | { | ||
| 341 |
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6388 | PetscFunctionBegin; |
| 342 |
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6388 | if (!*eps) PetscFunctionReturn(PETSC_SUCCESS); |
| 343 |
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6071 | PetscValidHeaderSpecific(*eps,EPS_CLASSID,1); |
| 344 |
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6071 | if (--((PetscObject)*eps)->refct > 0) { *eps = NULL; PetscFunctionReturn(PETSC_SUCCESS); } |
| 345 |
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5734 | PetscCall(EPSReset(*eps)); |
| 346 |
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5734 | PetscTryTypeMethod(*eps,destroy); |
| 347 |
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|
5734 | if ((*eps)->eigr) PetscCall(PetscFree4((*eps)->eigr,(*eps)->eigi,(*eps)->errest,(*eps)->perm)); |
| 348 |
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5734 | if ((*eps)->rr) PetscCall(PetscFree2((*eps)->rr,(*eps)->ri)); |
| 349 |
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5734 | PetscCall(STDestroy(&(*eps)->st)); |
| 350 |
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5734 | PetscCall(RGDestroy(&(*eps)->rg)); |
| 351 |
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5734 | PetscCall(DSDestroy(&(*eps)->ds)); |
| 352 |
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5734 | PetscCall(PetscFree((*eps)->sc)); |
| 353 | /* just in case the initial vectors have not been used */ | ||
| 354 |
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5734 | PetscCall(SlepcBasisDestroy_Private(&(*eps)->nds,&(*eps)->defl)); |
| 355 |
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5734 | PetscCall(SlepcBasisDestroy_Private(&(*eps)->nini,&(*eps)->IS)); |
| 356 |
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5734 | PetscCall(SlepcBasisDestroy_Private(&(*eps)->ninil,&(*eps)->ISL)); |
| 357 |
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5734 | if ((*eps)->convergeddestroy) PetscCall((*(*eps)->convergeddestroy)(&(*eps)->convergedctx)); |
| 358 |
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5734 | if ((*eps)->stoppingdestroy) PetscCall((*(*eps)->stoppingdestroy)(&(*eps)->stoppingctx)); |
| 359 |
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5734 | if ((*eps)->arbitrarydestroy) PetscCall((*(*eps)->arbitrarydestroy)(&(*eps)->arbitraryctx)); |
| 360 |
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5734 | PetscCall(EPSMonitorCancel(*eps)); |
| 361 |
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5734 | PetscCall(PetscHeaderDestroy(eps)); |
| 362 |
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1375 | PetscFunctionReturn(PETSC_SUCCESS); |
| 363 | } | ||
| 364 | |||
| 365 | /*@ | ||
| 366 | EPSSetTarget - Sets the value of the target. | ||
| 367 | |||
| 368 | Logically Collective | ||
| 369 | |||
| 370 | Input Parameters: | ||
| 371 | + eps - the linear eigensolver context | ||
| 372 | - target - the value of the target | ||
| 373 | |||
| 374 | Options Database Key: | ||
| 375 | . -eps_target \<target\> - the value of the target | ||
| 376 | |||
| 377 | Notes: | ||
| 378 | The target is a scalar value used to determine the portion of the spectrum | ||
| 379 | of interest. It is used in combination with `EPSSetWhichEigenpairs()`. | ||
| 380 | |||
| 381 | When PETSc is built with real scalars, it is not possible to specify a | ||
| 382 | complex target. | ||
| 383 | |||
| 384 | In the case of complex scalars, a complex value can be provided in the | ||
| 385 | command line with `[+/-][realnumber][+/-]realnumberi` with no spaces, e.g. | ||
| 386 | `-eps_target 1.0+2.0i`. | ||
| 387 | |||
| 388 | Level: intermediate | ||
| 389 | |||
| 390 | .seealso: [](ch:eps), `EPSGetTarget()`, `EPSSetWhichEigenpairs()` | ||
| 391 | @*/ | ||
| 392 | 1388 | PetscErrorCode EPSSetTarget(EPS eps,PetscScalar target) | |
| 393 | { | ||
| 394 |
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1388 | PetscFunctionBegin; |
| 395 |
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1388 | PetscValidHeaderSpecific(eps,EPS_CLASSID,1); |
| 396 |
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1388 | PetscValidLogicalCollectiveScalar(eps,target,2); |
| 397 | 1388 | eps->target = target; | |
| 398 |
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1388 | if (!eps->st) PetscCall(EPSGetST(eps,&eps->st)); |
| 399 |
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1388 | PetscCall(STSetDefaultShift(eps->st,target)); |
| 400 |
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354 | PetscFunctionReturn(PETSC_SUCCESS); |
| 401 | } | ||
| 402 | |||
| 403 | /*@ | ||
| 404 | EPSGetTarget - Gets the value of the target. | ||
| 405 | |||
| 406 | Not Collective | ||
| 407 | |||
| 408 | Input Parameter: | ||
| 409 | . eps - the linear eigensolver context | ||
| 410 | |||
| 411 | Output Parameter: | ||
| 412 | . target - the value of the target | ||
| 413 | |||
| 414 | Note: | ||
| 415 | If the target was not set by the user, then zero is returned. | ||
| 416 | |||
| 417 | Level: intermediate | ||
| 418 | |||
| 419 | .seealso: [](ch:eps), `EPSSetTarget()` | ||
| 420 | @*/ | ||
| 421 | 10985 | PetscErrorCode EPSGetTarget(EPS eps,PetscScalar* target) | |
| 422 | { | ||
| 423 |
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10985 | PetscFunctionBegin; |
| 424 |
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10985 | PetscValidHeaderSpecific(eps,EPS_CLASSID,1); |
| 425 |
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10985 | PetscAssertPointer(target,2); |
| 426 | 10985 | *target = eps->target; | |
| 427 |
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10985 | PetscFunctionReturn(PETSC_SUCCESS); |
| 428 | } | ||
| 429 | |||
| 430 | /*@ | ||
| 431 | EPSSetInterval - Defines the computational interval for spectrum slicing. | ||
| 432 | |||
| 433 | Logically Collective | ||
| 434 | |||
| 435 | Input Parameters: | ||
| 436 | + eps - the linear eigensolver context | ||
| 437 | . inta - left end of the interval | ||
| 438 | - intb - right end of the interval | ||
| 439 | |||
| 440 | Options Database Key: | ||
| 441 | . -eps_interval <a,b> - set $[a,b]$ as the interval of interest | ||
| 442 | |||
| 443 | Notes: | ||
| 444 | Spectrum slicing is a technique employed for computing all eigenvalues of | ||
| 445 | symmetric eigenproblems in a given interval, see section [](#sec:slice). | ||
| 446 | This function provides the interval to be considered. It must be used in | ||
| 447 | combination with `EPS_ALL`, see `EPSSetWhichEigenpairs()`. | ||
| 448 | |||
| 449 | A computational interval is also needed when using polynomial filters, | ||
| 450 | see `STFILTER` and section [](#sec:filter). | ||
| 451 | |||
| 452 | In the command-line option, two values must be provided. For an open interval, | ||
| 453 | one can give an infinite, e.g., `-eps_interval 1.0,inf` or `-eps_interval -inf,1.0`. | ||
| 454 | An open interval in the programmatic interface can be specified with | ||
| 455 | `PETSC_MAX_REAL` and -`PETSC_MAX_REAL`. | ||
| 456 | |||
| 457 | Level: intermediate | ||
| 458 | |||
| 459 | .seealso: [](ch:eps), [](#sec:slice), [](#sec:filter), `EPSGetInterval()`, `EPSSetWhichEigenpairs()`, `STFILTER` | ||
| 460 | @*/ | ||
| 461 | 425 | PetscErrorCode EPSSetInterval(EPS eps,PetscReal inta,PetscReal intb) | |
| 462 | { | ||
| 463 |
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425 | PetscFunctionBegin; |
| 464 |
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425 | PetscValidHeaderSpecific(eps,EPS_CLASSID,1); |
| 465 |
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425 | PetscValidLogicalCollectiveReal(eps,inta,2); |
| 466 |
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425 | PetscValidLogicalCollectiveReal(eps,intb,3); |
| 467 |
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425 | PetscCheck(inta<intb,PetscObjectComm((PetscObject)eps),PETSC_ERR_ARG_WRONG,"Badly defined interval, must be inta<intb"); |
| 468 |
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425 | if (eps->inta != inta || eps->intb != intb) { |
| 469 | 401 | eps->inta = inta; | |
| 470 | 401 | eps->intb = intb; | |
| 471 | 401 | eps->state = EPS_STATE_INITIAL; | |
| 472 | } | ||
| 473 |
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|
97 | PetscFunctionReturn(PETSC_SUCCESS); |
| 474 | } | ||
| 475 | |||
| 476 | /*@ | ||
| 477 | EPSGetInterval - Gets the computational interval for spectrum slicing. | ||
| 478 | |||
| 479 | Not Collective | ||
| 480 | |||
| 481 | Input Parameter: | ||
| 482 | . eps - the linear eigensolver context | ||
| 483 | |||
| 484 | Output Parameters: | ||
| 485 | + inta - left end of the interval | ||
| 486 | - intb - right end of the interval | ||
| 487 | |||
| 488 | Level: intermediate | ||
| 489 | |||
| 490 | Note: | ||
| 491 | If the interval was not set by the user, then zeros are returned. | ||
| 492 | |||
| 493 | .seealso: [](ch:eps), `EPSSetInterval()` | ||
| 494 | @*/ | ||
| 495 | 77 | PetscErrorCode EPSGetInterval(EPS eps,PetscReal* inta,PetscReal* intb) | |
| 496 | { | ||
| 497 |
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77 | PetscFunctionBegin; |
| 498 |
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77 | PetscValidHeaderSpecific(eps,EPS_CLASSID,1); |
| 499 |
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77 | if (inta) *inta = eps->inta; |
| 500 |
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77 | if (intb) *intb = eps->intb; |
| 501 |
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77 | PetscFunctionReturn(PETSC_SUCCESS); |
| 502 | } | ||
| 503 | |||
| 504 | /*@ | ||
| 505 | EPSSetST - Associates a spectral transformation object to the eigensolver. | ||
| 506 | |||
| 507 | Collective | ||
| 508 | |||
| 509 | Input Parameters: | ||
| 510 | + eps - the linear eigensolver context | ||
| 511 | - st - the spectral transformation object | ||
| 512 | |||
| 513 | Note: | ||
| 514 | Use `EPSGetST()` to retrieve the spectral transformation context at a later time | ||
| 515 | (for example, to free it at the end of the computations). | ||
| 516 | |||
| 517 | Level: advanced | ||
| 518 | |||
| 519 | .seealso: [](ch:eps), `EPSGetST()` | ||
| 520 | @*/ | ||
| 521 | 10 | PetscErrorCode EPSSetST(EPS eps,ST st) | |
| 522 | { | ||
| 523 |
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10 | PetscFunctionBegin; |
| 524 |
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10 | PetscValidHeaderSpecific(eps,EPS_CLASSID,1); |
| 525 |
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10 | PetscValidHeaderSpecific(st,ST_CLASSID,2); |
| 526 |
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10 | PetscCheckSameComm(eps,1,st,2); |
| 527 |
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10 | PetscCall(PetscObjectReference((PetscObject)st)); |
| 528 |
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10 | PetscCall(STDestroy(&eps->st)); |
| 529 | 10 | eps->st = st; | |
| 530 |
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10 | PetscFunctionReturn(PETSC_SUCCESS); |
| 531 | } | ||
| 532 | |||
| 533 | /*@ | ||
| 534 | EPSGetST - Obtain the spectral transformation (`ST`) object associated | ||
| 535 | to the eigensolver object. | ||
| 536 | |||
| 537 | Not Collective | ||
| 538 | |||
| 539 | Input Parameter: | ||
| 540 | . eps - the linear eigensolver context | ||
| 541 | |||
| 542 | Output Parameter: | ||
| 543 | . st - spectral transformation context | ||
| 544 | |||
| 545 | Level: intermediate | ||
| 546 | |||
| 547 | .seealso: [](ch:eps), `EPSSetST()` | ||
| 548 | @*/ | ||
| 549 | 34130 | PetscErrorCode EPSGetST(EPS eps,ST *st) | |
| 550 | { | ||
| 551 |
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34130 | PetscFunctionBegin; |
| 552 |
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34130 | PetscValidHeaderSpecific(eps,EPS_CLASSID,1); |
| 553 |
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34130 | PetscAssertPointer(st,2); |
| 554 |
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34130 | if (!eps->st) { |
| 555 |
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5633 | PetscCall(STCreate(PetscObjectComm((PetscObject)eps),&eps->st)); |
| 556 |
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5633 | PetscCall(PetscObjectIncrementTabLevel((PetscObject)eps->st,(PetscObject)eps,0)); |
| 557 |
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5633 | PetscCall(PetscObjectSetOptions((PetscObject)eps->st,((PetscObject)eps)->options)); |
| 558 | } | ||
| 559 | 34130 | *st = eps->st; | |
| 560 |
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34130 | PetscFunctionReturn(PETSC_SUCCESS); |
| 561 | } | ||
| 562 | |||
| 563 | /*@ | ||
| 564 | EPSSetBV - Associates a basis vectors object to the eigensolver. | ||
| 565 | |||
| 566 | Collective | ||
| 567 | |||
| 568 | Input Parameters: | ||
| 569 | + eps - the linear eigensolver context | ||
| 570 | - V - the basis vectors object | ||
| 571 | |||
| 572 | Level: advanced | ||
| 573 | |||
| 574 | .seealso: [](ch:eps), `EPSGetBV()` | ||
| 575 | @*/ | ||
| 576 | ✗ | PetscErrorCode EPSSetBV(EPS eps,BV V) | |
| 577 | { | ||
| 578 | ✗ | PetscFunctionBegin; | |
| 579 | ✗ | PetscValidHeaderSpecific(eps,EPS_CLASSID,1); | |
| 580 | ✗ | PetscValidHeaderSpecific(V,BV_CLASSID,2); | |
| 581 | ✗ | PetscCheckSameComm(eps,1,V,2); | |
| 582 | ✗ | PetscCall(PetscObjectReference((PetscObject)V)); | |
| 583 | ✗ | PetscCall(BVDestroy(&eps->V)); | |
| 584 | ✗ | eps->V = V; | |
| 585 | ✗ | PetscFunctionReturn(PETSC_SUCCESS); | |
| 586 | } | ||
| 587 | |||
| 588 | /*@ | ||
| 589 | EPSGetBV - Obtain the basis vectors object associated to the eigensolver object. | ||
| 590 | |||
| 591 | Not Collective | ||
| 592 | |||
| 593 | Input Parameter: | ||
| 594 | . eps - the linear eigensolver context | ||
| 595 | |||
| 596 | Output Parameter: | ||
| 597 | . V - basis vectors context | ||
| 598 | |||
| 599 | Level: advanced | ||
| 600 | |||
| 601 | .seealso: [](ch:eps), `EPSSetBV()` | ||
| 602 | @*/ | ||
| 603 | 6076 | PetscErrorCode EPSGetBV(EPS eps,BV *V) | |
| 604 | { | ||
| 605 |
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6076 | PetscFunctionBegin; |
| 606 |
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6076 | PetscValidHeaderSpecific(eps,EPS_CLASSID,1); |
| 607 |
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6076 | PetscAssertPointer(V,2); |
| 608 |
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6076 | if (!eps->V) { |
| 609 |
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5911 | PetscCall(BVCreate(PetscObjectComm((PetscObject)eps),&eps->V)); |
| 610 |
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5911 | PetscCall(PetscObjectIncrementTabLevel((PetscObject)eps->V,(PetscObject)eps,0)); |
| 611 |
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5911 | PetscCall(PetscObjectSetOptions((PetscObject)eps->V,((PetscObject)eps)->options)); |
| 612 | } | ||
| 613 | 6076 | *V = eps->V; | |
| 614 |
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6076 | PetscFunctionReturn(PETSC_SUCCESS); |
| 615 | } | ||
| 616 | |||
| 617 | /*@ | ||
| 618 | EPSSetRG - Associates a region object to the eigensolver. | ||
| 619 | |||
| 620 | Collective | ||
| 621 | |||
| 622 | Input Parameters: | ||
| 623 | + eps - the linear eigensolver context | ||
| 624 | - rg - the region object | ||
| 625 | |||
| 626 | Note: | ||
| 627 | Use `EPSGetRG()` to retrieve the region context at a later time (for example, | ||
| 628 | to free it at the end of the computations). | ||
| 629 | |||
| 630 | Level: advanced | ||
| 631 | |||
| 632 | .seealso: [](ch:eps), `EPSGetRG()` | ||
| 633 | @*/ | ||
| 634 | 40 | PetscErrorCode EPSSetRG(EPS eps,RG rg) | |
| 635 | { | ||
| 636 |
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40 | PetscFunctionBegin; |
| 637 |
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40 | PetscValidHeaderSpecific(eps,EPS_CLASSID,1); |
| 638 |
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40 | if (rg) { |
| 639 |
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40 | PetscValidHeaderSpecific(rg,RG_CLASSID,2); |
| 640 |
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40 | PetscCheckSameComm(eps,1,rg,2); |
| 641 | } | ||
| 642 |
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40 | PetscCall(PetscObjectReference((PetscObject)rg)); |
| 643 |
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40 | PetscCall(RGDestroy(&eps->rg)); |
| 644 | 40 | eps->rg = rg; | |
| 645 |
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40 | PetscFunctionReturn(PETSC_SUCCESS); |
| 646 | } | ||
| 647 | |||
| 648 | /*@ | ||
| 649 | EPSGetRG - Obtain the region object associated to the eigensolver. | ||
| 650 | |||
| 651 | Not Collective | ||
| 652 | |||
| 653 | Input Parameter: | ||
| 654 | . eps - the linear eigensolver context | ||
| 655 | |||
| 656 | Output Parameter: | ||
| 657 | . rg - region context | ||
| 658 | |||
| 659 | Level: advanced | ||
| 660 | |||
| 661 | .seealso: [](ch:eps), `EPSSetRG()` | ||
| 662 | @*/ | ||
| 663 | 5635 | PetscErrorCode EPSGetRG(EPS eps,RG *rg) | |
| 664 | { | ||
| 665 |
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5635 | PetscFunctionBegin; |
| 666 |
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5635 | PetscValidHeaderSpecific(eps,EPS_CLASSID,1); |
| 667 |
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5635 | PetscAssertPointer(rg,2); |
| 668 |
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5635 | if (!eps->rg) { |
| 669 |
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5635 | PetscCall(RGCreate(PetscObjectComm((PetscObject)eps),&eps->rg)); |
| 670 |
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5635 | PetscCall(PetscObjectIncrementTabLevel((PetscObject)eps->rg,(PetscObject)eps,0)); |
| 671 |
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5635 | PetscCall(PetscObjectSetOptions((PetscObject)eps->rg,((PetscObject)eps)->options)); |
| 672 | } | ||
| 673 | 5635 | *rg = eps->rg; | |
| 674 |
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5635 | PetscFunctionReturn(PETSC_SUCCESS); |
| 675 | } | ||
| 676 | |||
| 677 | /*@ | ||
| 678 | EPSSetDS - Associates a direct solver object to the eigensolver. | ||
| 679 | |||
| 680 | Collective | ||
| 681 | |||
| 682 | Input Parameters: | ||
| 683 | + eps - the linear eigensolver context | ||
| 684 | - ds - the direct solver object | ||
| 685 | |||
| 686 | Note: | ||
| 687 | Use `EPSGetDS()` to retrieve the direct solver context at a later time (for example, | ||
| 688 | to free it at the end of the computations). | ||
| 689 | |||
| 690 | Level: advanced | ||
| 691 | |||
| 692 | .seealso: [](ch:eps), `EPSGetDS()` | ||
| 693 | @*/ | ||
| 694 | ✗ | PetscErrorCode EPSSetDS(EPS eps,DS ds) | |
| 695 | { | ||
| 696 | ✗ | PetscFunctionBegin; | |
| 697 | ✗ | PetscValidHeaderSpecific(eps,EPS_CLASSID,1); | |
| 698 | ✗ | PetscValidHeaderSpecific(ds,DS_CLASSID,2); | |
| 699 | ✗ | PetscCheckSameComm(eps,1,ds,2); | |
| 700 | ✗ | PetscCall(PetscObjectReference((PetscObject)ds)); | |
| 701 | ✗ | PetscCall(DSDestroy(&eps->ds)); | |
| 702 | ✗ | eps->ds = ds; | |
| 703 | ✗ | PetscFunctionReturn(PETSC_SUCCESS); | |
| 704 | } | ||
| 705 | |||
| 706 | /*@ | ||
| 707 | EPSGetDS - Obtain the direct solver object associated to the eigensolver object. | ||
| 708 | |||
| 709 | Not Collective | ||
| 710 | |||
| 711 | Input Parameter: | ||
| 712 | . eps - the linear eigensolver context | ||
| 713 | |||
| 714 | Output Parameter: | ||
| 715 | . ds - direct solver context | ||
| 716 | |||
| 717 | Level: advanced | ||
| 718 | |||
| 719 | .seealso: [](ch:eps), `EPSSetDS()` | ||
| 720 | @*/ | ||
| 721 | 5306 | PetscErrorCode EPSGetDS(EPS eps,DS *ds) | |
| 722 | { | ||
| 723 |
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5306 | PetscFunctionBegin; |
| 724 |
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5306 | PetscValidHeaderSpecific(eps,EPS_CLASSID,1); |
| 725 |
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5306 | PetscAssertPointer(ds,2); |
| 726 |
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5306 | if (!eps->ds) { |
| 727 |
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5306 | PetscCall(DSCreate(PetscObjectComm((PetscObject)eps),&eps->ds)); |
| 728 |
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5306 | PetscCall(PetscObjectIncrementTabLevel((PetscObject)eps->ds,(PetscObject)eps,0)); |
| 729 |
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5306 | PetscCall(PetscObjectSetOptions((PetscObject)eps->ds,((PetscObject)eps)->options)); |
| 730 | } | ||
| 731 | 5306 | *ds = eps->ds; | |
| 732 |
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5306 | PetscFunctionReturn(PETSC_SUCCESS); |
| 733 | } | ||
| 734 | |||
| 735 | /*@ | ||
| 736 | EPSIsGeneralized - Ask if the `EPS` object corresponds to a generalized | ||
| 737 | eigenvalue problem. | ||
| 738 | |||
| 739 | Not Collective | ||
| 740 | |||
| 741 | Input Parameter: | ||
| 742 | . eps - the linear eigensolver context | ||
| 743 | |||
| 744 | Output Parameter: | ||
| 745 | . is - `PETSC_TRUE` if the problem is generalized | ||
| 746 | |||
| 747 | Level: intermediate | ||
| 748 | |||
| 749 | .seealso: [](ch:eps), `EPSIsHermitian()`, `EPSIsPositive()`, `EPSIsStructured()` | ||
| 750 | @*/ | ||
| 751 | 13 | PetscErrorCode EPSIsGeneralized(EPS eps,PetscBool* is) | |
| 752 | { | ||
| 753 |
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13 | PetscFunctionBegin; |
| 754 |
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13 | PetscValidHeaderSpecific(eps,EPS_CLASSID,1); |
| 755 |
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13 | PetscAssertPointer(is,2); |
| 756 | 13 | *is = eps->isgeneralized; | |
| 757 |
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13 | PetscFunctionReturn(PETSC_SUCCESS); |
| 758 | } | ||
| 759 | |||
| 760 | /*@ | ||
| 761 | EPSIsHermitian - Ask if the `EPS` object corresponds to a Hermitian | ||
| 762 | eigenvalue problem. | ||
| 763 | |||
| 764 | Not Collective | ||
| 765 | |||
| 766 | Input Parameter: | ||
| 767 | . eps - the linear eigensolver context | ||
| 768 | |||
| 769 | Output Parameter: | ||
| 770 | . is - `PETSC_TRUE` if the problem is Hermitian | ||
| 771 | |||
| 772 | Level: intermediate | ||
| 773 | |||
| 774 | .seealso: [](ch:eps), `EPSIsGeneralized()`, `EPSIsPositive()`, `EPSIsStructured()` | ||
| 775 | @*/ | ||
| 776 | 13 | PetscErrorCode EPSIsHermitian(EPS eps,PetscBool* is) | |
| 777 | { | ||
| 778 |
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13 | PetscFunctionBegin; |
| 779 |
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13 | PetscValidHeaderSpecific(eps,EPS_CLASSID,1); |
| 780 |
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13 | PetscAssertPointer(is,2); |
| 781 | 13 | *is = eps->ishermitian; | |
| 782 |
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13 | PetscFunctionReturn(PETSC_SUCCESS); |
| 783 | } | ||
| 784 | |||
| 785 | /*@ | ||
| 786 | EPSIsPositive - Ask if the `EPS` object corresponds to an eigenvalue | ||
| 787 | problem type that requires a positive (semi-) definite matrix $B$. | ||
| 788 | |||
| 789 | Not Collective | ||
| 790 | |||
| 791 | Input Parameter: | ||
| 792 | . eps - the linear eigensolver context | ||
| 793 | |||
| 794 | Output Parameter: | ||
| 795 | . is - `PETSC_TRUE` if the problem is positive (semi-) definite | ||
| 796 | |||
| 797 | Level: intermediate | ||
| 798 | |||
| 799 | .seealso: [](ch:eps), `EPSIsGeneralized()`, `EPSIsHermitian()`, `EPSIsStructured()` | ||
| 800 | @*/ | ||
| 801 | 13 | PetscErrorCode EPSIsPositive(EPS eps,PetscBool* is) | |
| 802 | { | ||
| 803 |
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13 | PetscFunctionBegin; |
| 804 |
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13 | PetscValidHeaderSpecific(eps,EPS_CLASSID,1); |
| 805 |
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13 | PetscAssertPointer(is,2); |
| 806 | 13 | *is = eps->ispositive; | |
| 807 |
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13 | PetscFunctionReturn(PETSC_SUCCESS); |
| 808 | } | ||
| 809 | |||
| 810 | /*@ | ||
| 811 | EPSIsStructured - Ask if the `EPS` object corresponds to a structured | ||
| 812 | eigenvalue problem. | ||
| 813 | |||
| 814 | Not Collective | ||
| 815 | |||
| 816 | Input Parameter: | ||
| 817 | . eps - the linear eigensolver context | ||
| 818 | |||
| 819 | Output Parameter: | ||
| 820 | . is - `PETSC_TRUE` if the problem is structured | ||
| 821 | |||
| 822 | Note: | ||
| 823 | The result will be true if the problem type has been set to some | ||
| 824 | structured type such as `EPS_BSE`. This is independent of whether the | ||
| 825 | input matrix has been built with a certain structure with a helper function. | ||
| 826 | |||
| 827 | Level: intermediate | ||
| 828 | |||
| 829 | .seealso: [](ch:eps), `EPSIsGeneralized()`, `EPSIsHermitian()`, `EPSIsPositive()`, `EPSSetProblemType()` | ||
| 830 | @*/ | ||
| 831 | ✗ | PetscErrorCode EPSIsStructured(EPS eps,PetscBool* is) | |
| 832 | { | ||
| 833 | ✗ | PetscFunctionBegin; | |
| 834 | ✗ | PetscValidHeaderSpecific(eps,EPS_CLASSID,1); | |
| 835 | ✗ | PetscAssertPointer(is,2); | |
| 836 | ✗ | *is = eps->isstructured; | |
| 837 | ✗ | PetscFunctionReturn(PETSC_SUCCESS); | |
| 838 | } | ||
| 839 |