Actual source code: dvd_schm.c

  1: /*
  2:    - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
  3:    SLEPc - Scalable Library for Eigenvalue Problem Computations
  4:    Copyright (c) 2002-2011, Universitat Politecnica de Valencia, Spain

  6:    This file is part of SLEPc.
  7:       
  8:    SLEPc is free software: you can redistribute it and/or modify it under  the
  9:    terms of version 3 of the GNU Lesser General Public License as published by
 10:    the Free Software Foundation.

 12:    SLEPc  is  distributed in the hope that it will be useful, but WITHOUT  ANY 
 13:    WARRANTY;  without even the implied warranty of MERCHANTABILITY or  FITNESS 
 14:    FOR  A  PARTICULAR PURPOSE. See the GNU Lesser General Public  License  for 
 15:    more details.

 17:    You  should have received a copy of the GNU Lesser General  Public  License
 18:    along with SLEPc. If not, see <http://www.gnu.org/licenses/>.
 19:    - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
 20: */

 22:  #include davidson.h

 24: #define DVD_CHECKSUM(b) \
 25:   ( (b)->max_size_V + (b)->max_size_auxV + (b)->max_size_auxS + \
 26:     (b)->own_vecs + (b)->own_scalars + (b)->max_size_oldX )

 30: PetscErrorCode dvd_schm_basic_preconf(dvdDashboard *d, dvdBlackboard *b,
 31:   PetscInt mpd, PetscInt min_size_V, PetscInt bs,
 32:   PetscInt ini_size_V, PetscInt size_initV, PetscInt plusk,
 33:   HarmType_t harmMode, KSP ksp, InitType_t init, PetscBool allResiduals,
 34:   orthoV_type_t orth, PetscInt cX_proj, PetscInt cX_impr)
 35: {
 37:   PetscInt       check_sum0, check_sum1;


 41:   PetscMemzero(b, sizeof(dvdBlackboard));
 42:   b->state = DVD_STATE_PRECONF;

 44:   for(check_sum0=-1,check_sum1=DVD_CHECKSUM(b); check_sum0 != check_sum1;
 45:       check_sum0 = check_sum1, check_sum1 = DVD_CHECKSUM(b)) {
 46:     b->own_vecs = b->own_scalars = 0;

 48:     /* Setup basic management of V */
 49:     dvd_managementV_basic(d, b, bs, mpd, min_size_V, plusk,
 50:                                harmMode==DVD_HARM_NONE?PETSC_FALSE:PETSC_TRUE,
 51:                                allResiduals);
 52: 
 53: 
 54:     /* Setup the initial subspace for V */
 55:     dvd_initV(d, b, ini_size_V, size_initV,
 56:                      init==DVD_INITV_KRYLOV?PETSC_TRUE:PETSC_FALSE);
 57: 
 58:     /* Setup the convergence in order to use the SLEPc convergence test */
 59:     dvd_testconv_slepc(d, b);
 60: 
 61:     /* Setup Raileigh-Ritz for selecting the best eigenpairs in V */
 62:     dvd_calcpairs_qz(d, b, orth, PETSC_NULL, cX_proj,
 63:                 harmMode==DVD_HARM_NONE?PETSC_FALSE:PETSC_TRUE);
 64:     if (harmMode != DVD_HARM_NONE) {
 65:       dvd_harm_conf(d, b, harmMode, PETSC_FALSE, 0.0);
 66:     }
 67: 
 68:     /* Setup the method for improving the eigenvectors */
 69:     dvd_improvex_jd(d, b, ksp, bs, cX_impr, PETSC_FALSE);
 70:     dvd_improvex_jd_proj_uv(d, b, DVD_PROJ_KZX);
 71:     dvd_improvex_jd_lit_const(d, b, 0, 0.0, 0.0);
 72:   }

 74:   return(0);
 75: }


 80: PetscErrorCode dvd_schm_basic_conf(dvdDashboard *d, dvdBlackboard *b,
 81:   PetscInt mpd, PetscInt min_size_V, PetscInt bs,
 82:   PetscInt ini_size_V, PetscInt size_initV, PetscInt plusk,
 83:   IP ip, HarmType_t harmMode, PetscBool fixedTarget, PetscScalar t, KSP ksp,
 84:   PetscReal fix, InitType_t init, PetscBool allResiduals, orthoV_type_t orth,
 85:   PetscInt cX_proj, PetscInt cX_impr, PetscBool dynamic)
 86: {
 87:   PetscInt        check_sum0, check_sum1, maxits;
 88:   Vec             *fv;
 89:   PetscScalar     *fs;
 90:   PetscReal       tol;
 91:   PetscErrorCode  ierr;


 95:   b->state = DVD_STATE_CONF;
 96:   check_sum0 = DVD_CHECKSUM(b);
 97:   b->own_vecs = 0; b->own_scalars = 0;
 98:   fv = b->free_vecs; fs = b->free_scalars;

100:   /* Setup basic management of V */
101:   dvd_managementV_basic(d, b, bs, mpd, min_size_V, plusk,
102:                         harmMode==DVD_HARM_NONE?PETSC_FALSE:PETSC_TRUE,
103:                         allResiduals);
104: 

106:   /* Setup the initial subspace for V */
107:   dvd_initV(d, b, ini_size_V, size_initV,
108:                    init==DVD_INITV_KRYLOV?PETSC_TRUE:PETSC_FALSE);

110:   /* Setup the convergence in order to use the SLEPc convergence test */
111:   dvd_testconv_slepc(d, b);

113:   /* Setup Raileigh-Ritz for selecting the best eigenpairs in V */
114:   dvd_calcpairs_qz(d, b, orth, ip, cX_proj,
115:                 harmMode==DVD_HARM_NONE?PETSC_FALSE:PETSC_TRUE);
116:   if (harmMode != DVD_HARM_NONE) {
117:     dvd_harm_conf(d, b, harmMode, fixedTarget, t);
118:   }

120:   /* Setup the method for improving the eigenvectors */
121:   dvd_improvex_jd(d, b, ksp, bs, cX_impr, dynamic);
122:   dvd_improvex_jd_proj_uv(d, b, DVD_PROJ_KZX);
123: 
124:   KSPGetTolerances(ksp, &tol, PETSC_NULL, PETSC_NULL, &maxits);
125: 
126:   dvd_improvex_jd_lit_const(d, b, maxits, tol, fix);

128:   check_sum1 = DVD_CHECKSUM(b);
129:   if ((check_sum0 != check_sum1) ||
130:       (b->free_vecs - fv > b->own_vecs) ||
131:       (b->free_scalars - fs > b->own_scalars))
132:     SETERRQ(PETSC_COMM_WORLD,1, "Something awful happened");
133: 
134:   return(0);
135: }