Date: 2024-12-02T08:56:43+00:00

Actual source code: slepcds.h
slepc-3.22.2 2024-12-02
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      1: /*
      2:    - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
      3:    SLEPc - Scalable Library for Eigenvalue Problem Computations
      4:    Copyright (c) 2002-, Universitat Politecnica de Valencia, Spain

      6:    This file is part of SLEPc.
      7:    SLEPc is distributed under a 2-clause BSD license (see LICENSE).
      8:    - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
      9: */
     10: /*
     11:    User interface for the direct solver object in SLEPc
     12: */

     14: #pragma once

     16: #include <slepcsc.h>
     17: #include <slepcfn.h>
     18: #include <slepcrg.h>

     20: /* SUBMANSEC = DS */

     22: #define DS_MAX_SOLVE 6

     24: SLEPC_EXTERN PetscErrorCode DSInitializePackage(void);
     25: SLEPC_EXTERN PetscErrorCode DSFinalizePackage(void);

     27: /*S
     28:     DS - Direct solver (or dense system), to represent low-dimensional
     29:     eigenproblems that must be solved within iterative solvers. This is an
     30:     auxiliary object and is not normally needed by application programmers.

     32:     Level: beginner

     34: .seealso:  DSCreate()
     35: S*/
     36: typedef struct _p_DS* DS;

     38: /*J
     39:     DSType - String with the name of the type of direct solver. Roughly,
     40:     there are as many types as problem types are available within SLEPc.

     42:     Level: advanced

     44: .seealso: DSSetType(), DS
     45: J*/
     46: typedef const char* DSType;
     47: #define DSHEP    "hep"
     48: #define DSNHEP   "nhep"
     49: #define DSGHEP   "ghep"
     50: #define DSGHIEP  "ghiep"
     51: #define DSGNHEP  "gnhep"
     52: #define DSNHEPTS "nhepts"
     53: #define DSSVD    "svd"
     54: #define DSHSVD   "hsvd"
     55: #define DSGSVD   "gsvd"
     56: #define DSPEP    "pep"
     57: #define DSNEP    "nep"

     59: /* Logging support */
     60: SLEPC_EXTERN PetscClassId DS_CLASSID;

     62: /*E
     63:     DSStateType - Indicates in which state the direct solver is

     65:     Level: advanced

     67: .seealso: DSSetState()
     68: E*/
     69: typedef enum { DS_STATE_RAW,
     70:                DS_STATE_INTERMEDIATE,
     71:                DS_STATE_CONDENSED,
     72:                DS_STATE_TRUNCATED } DSStateType;
     73: SLEPC_EXTERN const char *DSStateTypes[];

     75: /*E
     76:     DSMatType - Used to refer to one of the matrices stored internally in DS

     78:     Notes:
     79:     The matrices preferentially refer to
     80: +   DS_MAT_A  - first matrix of eigenproblem/singular value problem
     81: .   DS_MAT_B  - second matrix of a generalized eigenproblem
     82: .   DS_MAT_C  - third matrix of a quadratic eigenproblem (deprecated)
     83: .   DS_MAT_T  - tridiagonal matrix
     84: .   DS_MAT_D  - diagonal matrix
     85: .   DS_MAT_Q  - orthogonal matrix of (right) Schur vectors
     86: .   DS_MAT_Z  - orthogonal matrix of left Schur vectors
     87: .   DS_MAT_X  - right eigenvectors
     88: .   DS_MAT_Y  - left eigenvectors
     89: .   DS_MAT_U  - left singular vectors
     90: .   DS_MAT_V  - right singular vectors
     91: .   DS_MAT_W  - workspace matrix
     92: -   DS_MAT_Ex - extra matrices (x=0,..,9)

     94:     All matrices can have space to hold ld x ld elements, except for
     95:     DS_MAT_T that has space for 3 x ld elements (ld = leading dimension)
     96:     and DS_MAT_D that has space for just ld elements.

     98:     In DSPEP problems, matrices A, B, W can have space for d*ld x d*ld,
     99:     where d is the polynomial degree, and X can have ld x d*ld.
    100:     Also DSNEP has exceptions. Check the manual page of each DS type
    101:     for details.

    103:     Level: advanced

    105: .seealso: DSAllocate(), DSGetArray(), DSGetArrayReal(), DSVectors()
    106: E*/
    107: typedef enum { DS_MAT_A,
    108:                DS_MAT_B,
    109:                DS_MAT_C,
    110:                DS_MAT_T,
    111:                DS_MAT_D,
    112:                DS_MAT_Q,
    113:                DS_MAT_Z,
    114:                DS_MAT_X,
    115:                DS_MAT_Y,
    116:                DS_MAT_U,
    117:                DS_MAT_V,
    118:                DS_MAT_W,
    119:                DS_MAT_E0,
    120:                DS_MAT_E1,
    121:                DS_MAT_E2,
    122:                DS_MAT_E3,
    123:                DS_MAT_E4,
    124:                DS_MAT_E5,
    125:                DS_MAT_E6,
    126:                DS_MAT_E7,
    127:                DS_MAT_E8,
    128:                DS_MAT_E9,
    129:                DS_NUM_MAT } DSMatType;

    131: /* Convenience for indexing extra matrices */
    132: SLEPC_EXTERN DSMatType DSMatExtra[];
    133: #define DS_NUM_EXTRA  10

    135: /*E
    136:     DSParallelType - Indicates the parallel mode that the direct solver will use

    138:     Level: advanced

    140: .seealso: DSSetParallel()
    141: E*/
    142: typedef enum { DS_PARALLEL_REDUNDANT,
    143:                DS_PARALLEL_SYNCHRONIZED,
    144:                DS_PARALLEL_DISTRIBUTED } DSParallelType;
    145: SLEPC_EXTERN const char *DSParallelTypes[];

    147: SLEPC_EXTERN PetscErrorCode DSCreate(MPI_Comm,DS*);
    148: SLEPC_EXTERN PetscErrorCode DSSetType(DS,DSType);
    149: SLEPC_EXTERN PetscErrorCode DSGetType(DS,DSType*);
    150: SLEPC_EXTERN PetscErrorCode DSSetOptionsPrefix(DS,const char *);
    151: SLEPC_EXTERN PetscErrorCode DSAppendOptionsPrefix(DS,const char *);
    152: SLEPC_EXTERN PetscErrorCode DSGetOptionsPrefix(DS,const char *[]);
    153: SLEPC_EXTERN PetscErrorCode DSSetFromOptions(DS);
    154: SLEPC_EXTERN PetscErrorCode DSView(DS,PetscViewer);
    155: SLEPC_EXTERN PetscErrorCode DSViewFromOptions(DS,PetscObject,const char[]);
    156: SLEPC_EXTERN PetscErrorCode DSViewMat(DS,PetscViewer,DSMatType);
    157: SLEPC_EXTERN PetscErrorCode DSDestroy(DS*);
    158: SLEPC_EXTERN PetscErrorCode DSReset(DS);
    159: SLEPC_EXTERN PetscErrorCode DSDuplicate(DS,DS*);

    161: SLEPC_EXTERN PetscErrorCode DSAllocate(DS,PetscInt);
    162: SLEPC_EXTERN PetscErrorCode DSGetLeadingDimension(DS,PetscInt*);
    163: SLEPC_EXTERN PetscErrorCode DSSetState(DS,DSStateType);
    164: SLEPC_EXTERN PetscErrorCode DSGetState(DS,DSStateType*);
    165: SLEPC_EXTERN PetscErrorCode DSSetDimensions(DS,PetscInt,PetscInt,PetscInt);
    166: SLEPC_EXTERN PetscErrorCode DSGetDimensions(DS,PetscInt*,PetscInt*,PetscInt*,PetscInt*);
    167: SLEPC_EXTERN PetscErrorCode DSSetBlockSize(DS,PetscInt);
    168: SLEPC_EXTERN PetscErrorCode DSGetBlockSize(DS,PetscInt*);
    169: SLEPC_EXTERN PetscErrorCode DSGetTruncateSize(DS,PetscInt,PetscInt,PetscInt*);
    170: SLEPC_EXTERN PetscErrorCode DSTruncate(DS,PetscInt,PetscBool);
    171: SLEPC_EXTERN PetscErrorCode DSSetIdentity(DS,DSMatType);
    172: SLEPC_EXTERN PetscErrorCode DSSetMethod(DS,PetscInt);
    173: SLEPC_EXTERN PetscErrorCode DSGetMethod(DS,PetscInt*);
    174: SLEPC_EXTERN PetscErrorCode DSSetParallel(DS,DSParallelType);
    175: SLEPC_EXTERN PetscErrorCode DSGetParallel(DS,DSParallelType*);
    176: SLEPC_EXTERN PetscErrorCode DSSetCompact(DS,PetscBool);
    177: SLEPC_EXTERN PetscErrorCode DSGetCompact(DS,PetscBool*);
    178: SLEPC_EXTERN PetscErrorCode DSSetExtraRow(DS,PetscBool);
    179: SLEPC_EXTERN PetscErrorCode DSGetExtraRow(DS,PetscBool*);
    180: SLEPC_EXTERN PetscErrorCode DSSetRefined(DS,PetscBool);
    181: SLEPC_EXTERN PetscErrorCode DSGetRefined(DS,PetscBool*);
    182: SLEPC_EXTERN PetscErrorCode DSGetMat(DS,DSMatType,Mat*);
    183: SLEPC_EXTERN PetscErrorCode DSRestoreMat(DS,DSMatType,Mat*);
    184: SLEPC_EXTERN PetscErrorCode DSGetMatAndColumn(DS,DSMatType,PetscInt,Mat*,Vec*);
    185: SLEPC_EXTERN PetscErrorCode DSRestoreMatAndColumn(DS,DSMatType,PetscInt,Mat*,Vec*);
    186: SLEPC_EXTERN PetscErrorCode DSGetArray(DS,DSMatType,PetscScalar*[]);
    187: SLEPC_EXTERN PetscErrorCode DSRestoreArray(DS,DSMatType,PetscScalar*[]);
    188: SLEPC_EXTERN PetscErrorCode DSGetArrayReal(DS,DSMatType,PetscReal*[]);
    189: SLEPC_EXTERN PetscErrorCode DSRestoreArrayReal(DS,DSMatType,PetscReal*[]);
    190: SLEPC_EXTERN PetscErrorCode DSVectors(DS,DSMatType,PetscInt*,PetscReal*);
    191: SLEPC_EXTERN PetscErrorCode DSSolve(DS,PetscScalar*,PetscScalar*);
    192: SLEPC_EXTERN PetscErrorCode DSSort(DS,PetscScalar*,PetscScalar*,PetscScalar*,PetscScalar*,PetscInt*);
    193: SLEPC_EXTERN PetscErrorCode DSSortWithPermutation(DS,PetscInt*,PetscScalar*,PetscScalar*);
    194: SLEPC_EXTERN PetscErrorCode DSSynchronize(DS,PetscScalar*,PetscScalar*);
    195: PETSC_DEPRECATED_FUNCTION(3, 18, 0, "DSGetMat()+MatDenseGetSubMatrix()+MatCopy()", ) static inline PetscErrorCode DSCopyMat(DS ds,DSMatType m,PetscInt mr,PetscInt mc,Mat A,PetscInt Ar,PetscInt Ac,PetscInt rows,PetscInt cols,PetscBool out)
    196: {
    197:   Mat M,M0,A0;

    199:   PetscFunctionBegin;
    200:   PetscCall(DSGetMat(ds,m,&M));
    201:   PetscCall(MatDenseGetSubMatrix(M,mr,mr+rows,mc,mc+cols,&M0));
    202:   PetscCall(MatDenseGetSubMatrix(A,Ar,Ar+rows,Ac,Ac+cols,&A0));
    203:   if (out) PetscCall(MatCopy(M0,A0,SAME_NONZERO_PATTERN));
    204:   else PetscCall(MatCopy(A0,M0,SAME_NONZERO_PATTERN));
    205:   PetscCall(MatDenseRestoreSubMatrix(M,&M0));
    206:   PetscCall(MatDenseRestoreSubMatrix(A,&A0));
    207:   PetscCall(DSRestoreMat(ds,m,&M));
    208:   PetscFunctionReturn(PETSC_SUCCESS);
    209: }
    210: SLEPC_EXTERN PetscErrorCode DSMatGetSize(DS,DSMatType,PetscInt*,PetscInt*);
    211: SLEPC_EXTERN PetscErrorCode DSMatIsHermitian(DS,DSMatType,PetscBool*);
    212: SLEPC_EXTERN PetscErrorCode DSSetSlepcSC(DS,SlepcSC);
    213: SLEPC_EXTERN PetscErrorCode DSGetSlepcSC(DS,SlepcSC*);
    214: SLEPC_EXTERN PetscErrorCode DSUpdateExtraRow(DS);
    215: SLEPC_EXTERN PetscErrorCode DSCond(DS,PetscReal*);
    216: SLEPC_EXTERN PetscErrorCode DSTranslateHarmonic(DS,PetscScalar,PetscReal,PetscBool,PetscScalar*,PetscReal*);
    217: SLEPC_EXTERN PetscErrorCode DSTranslateRKS(DS,PetscScalar);
    218: SLEPC_EXTERN PetscErrorCode DSOrthogonalize(DS,DSMatType,PetscInt,PetscInt*);
    219: SLEPC_EXTERN PetscErrorCode DSPseudoOrthogonalize(DS,DSMatType,PetscInt,PetscReal*,PetscInt*,PetscReal*);

    221: /* --------- options specific to particular solvers -------- */

    223: SLEPC_EXTERN PetscErrorCode DSSVDSetDimensions(DS,PetscInt);
    224: SLEPC_EXTERN PetscErrorCode DSSVDGetDimensions(DS,PetscInt*);
    225: SLEPC_EXTERN PetscErrorCode DSGSVDSetDimensions(DS,PetscInt,PetscInt);
    226: SLEPC_EXTERN PetscErrorCode DSGSVDGetDimensions(DS,PetscInt*,PetscInt*);
    227: SLEPC_EXTERN PetscErrorCode DSHSVDSetDimensions(DS,PetscInt);
    228: SLEPC_EXTERN PetscErrorCode DSHSVDGetDimensions(DS,PetscInt*);
    229: SLEPC_EXTERN PetscErrorCode DSHSVDSetReorthogonalize(DS,PetscBool);
    230: SLEPC_EXTERN PetscErrorCode DSHSVDGetReorthogonalize(DS,PetscBool*);

    232: SLEPC_EXTERN PetscErrorCode DSPEPSetDegree(DS,PetscInt);
    233: SLEPC_EXTERN PetscErrorCode DSPEPGetDegree(DS,PetscInt*);
    234: SLEPC_EXTERN PetscErrorCode DSPEPSetCoefficients(DS,PetscReal*);
    235: SLEPC_EXTERN PetscErrorCode DSPEPGetCoefficients(DS,PetscReal**);

    237: SLEPC_EXTERN PetscErrorCode DSNEPSetFN(DS,PetscInt,FN*);
    238: SLEPC_EXTERN PetscErrorCode DSNEPGetFN(DS,PetscInt,FN*);
    239: SLEPC_EXTERN PetscErrorCode DSNEPGetNumFN(DS,PetscInt*);
    240: SLEPC_EXTERN PetscErrorCode DSNEPSetMinimality(DS,PetscInt);
    241: SLEPC_EXTERN PetscErrorCode DSNEPGetMinimality(DS,PetscInt*);
    242: SLEPC_EXTERN PetscErrorCode DSNEPSetRefine(DS,PetscReal,PetscInt);
    243: SLEPC_EXTERN PetscErrorCode DSNEPGetRefine(DS,PetscReal*,PetscInt*);
    244: SLEPC_EXTERN PetscErrorCode DSNEPSetIntegrationPoints(DS,PetscInt);
    245: SLEPC_EXTERN PetscErrorCode DSNEPGetIntegrationPoints(DS,PetscInt*);
    246: SLEPC_EXTERN PetscErrorCode DSNEPSetSamplingSize(DS,PetscInt);
    247: SLEPC_EXTERN PetscErrorCode DSNEPGetSamplingSize(DS,PetscInt*);
    248: SLEPC_EXTERN PetscErrorCode DSNEPSetRG(DS,RG);
    249: SLEPC_EXTERN PetscErrorCode DSNEPGetRG(DS,RG*);

    251: /*S
    252:   DSNEPMatrixFunctionFn - A prototype of a DSNEP compute matrix function that would be passed to DSNEPSetComputeMatrixFunction()

    254:   Calling Sequence:
    255: +   ds     - the direct solver object
    256: .   lambda - point where T(lambda) or T'(lambda) must be evaluated
    257: .   deriv  - if true compute T'(lambda), otherwise compute T(lambda)
    258: .   mat    - the DS matrix where the result must be stored
    259: -   ctx    - [optional] user-defined context for private data for the
    260:              matrix evaluation routine (may be `NULL`)

    262:   Level: developer

    264: .seealso: DSNEPSetComputeMatrixFunction()
    265: S*/
    266: PETSC_EXTERN_TYPEDEF typedef PetscErrorCode(DSNEPMatrixFunctionFn)(DS ds,PetscScalar lambda,PetscBool deriv,DSMatType mat,void *ctx);

    268: SLEPC_EXTERN PetscErrorCode DSNEPSetComputeMatrixFunction(DS,DSNEPMatrixFunctionFn*,void*);
    269: SLEPC_EXTERN PetscErrorCode DSNEPGetComputeMatrixFunction(DS,DSNEPMatrixFunctionFn**,void**);

    271: SLEPC_EXTERN PetscFunctionList DSList;
    272: SLEPC_EXTERN PetscErrorCode DSRegister(const char[],PetscErrorCode(*)(DS));