1: /*
2: - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
3: SLEPc - Scalable Library for Eigenvalue Problem Computations
4: Copyright (c) 2002-2016, Universitat Politecnica de Valencia, Spain
6: This file is part of SLEPc.
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) ((b)->max_size_V + (b)->max_size_oldX) 28: PetscErrorCode dvd_schm_basic_preconf(dvdDashboard *d,dvdBlackboard *b,PetscInt mpd,PetscInt min_size_V,PetscInt bs,PetscInt ini_size_V,PetscInt size_initV,PetscInt plusk,HarmType_t harmMode,KSP ksp,InitType_t init,PetscBool allResiduals,PetscBool orth,PetscInt cX_proj,PetscInt cX_impr,PetscBool doubleexp) 29: {
31: PetscInt check_sum0,check_sum1;
34: PetscMemzero(b,sizeof(dvdBlackboard));
35: b->state = DVD_STATE_PRECONF;
37: for (check_sum0=-1,check_sum1=DVD_CHECKSUM(b); check_sum0 != check_sum1; check_sum0 = check_sum1, check_sum1 = DVD_CHECKSUM(b)) {
39: /* Setup basic management of V */
40: dvd_managementV_basic(d,b,bs,mpd,min_size_V,plusk,PetscNot(harmMode==DVD_HARM_NONE),allResiduals);
42: /* Setup the initial subspace for V */
43: dvd_initV(d,b,ini_size_V,size_initV,(init==DVD_INITV_KRYLOV)?PETSC_TRUE:PETSC_FALSE);
45: /* Setup the convergence in order to use the SLEPc convergence test */
46: dvd_testconv_slepc(d,b);
48: /* Setup Raileigh-Ritz for selecting the best eigenpairs in V */
49: dvd_calcpairs_qz(d,b,orth,cX_proj,PetscNot(harmMode==DVD_HARM_NONE));
50: if (harmMode != DVD_HARM_NONE) {
51: dvd_harm_conf(d,b,harmMode,PETSC_FALSE,0.0);
52: }
54: /* Setup the method for improving the eigenvectors */
55: if (doubleexp) {
56: dvd_improvex_gd2(d,b,ksp,bs);
57: } else {
58: dvd_improvex_jd(d,b,ksp,bs,cX_impr,PETSC_FALSE);
59: dvd_improvex_jd_proj_uv(d,b,DVD_PROJ_KZX);
60: dvd_improvex_jd_lit_const(d,b,0,0.0,0.0);
61: }
62: }
63: return(0);
64: }
68: PetscErrorCode dvd_schm_basic_conf(dvdDashboard *d,dvdBlackboard *b,PetscInt mpd,PetscInt min_size_V,PetscInt bs,PetscInt ini_size_V,PetscInt size_initV,PetscInt plusk,HarmType_t harmMode,PetscBool fixedTarget,PetscScalar t,KSP ksp,PetscReal fix,InitType_t init,PetscBool allResiduals,PetscBool orth,PetscInt cX_proj,PetscInt cX_impr,PetscBool dynamic,PetscBool doubleexp) 69: {
70: PetscInt check_sum0,check_sum1,maxits;
71: PetscReal tol;
75: b->state = DVD_STATE_CONF;
76: check_sum0 = DVD_CHECKSUM(b);
78: /* Setup basic management of V */
79: dvd_managementV_basic(d,b,bs,mpd,min_size_V,plusk,PetscNot(harmMode==DVD_HARM_NONE),allResiduals);
81: /* Setup the initial subspace for V */
82: dvd_initV(d,b,ini_size_V,size_initV,(init==DVD_INITV_KRYLOV)?PETSC_TRUE:PETSC_FALSE);
84: /* Setup the convergence in order to use the SLEPc convergence test */
85: dvd_testconv_slepc(d,b);
87: /* Setup Raileigh-Ritz for selecting the best eigenpairs in V */
88: dvd_calcpairs_qz(d,b,orth,cX_proj,PetscNot(harmMode==DVD_HARM_NONE));
89: if (harmMode != DVD_HARM_NONE) {
90: dvd_harm_conf(d,b,harmMode,fixedTarget,t);
91: }
93: /* Setup the method for improving the eigenvectors */
94: if (doubleexp) {
95: dvd_improvex_gd2(d,b,ksp,bs);
96: } else {
97: dvd_improvex_jd(d,b,ksp,bs,cX_impr,dynamic);
98: dvd_improvex_jd_proj_uv(d,b,DVD_PROJ_KZX);
99: KSPGetTolerances(ksp,&tol,NULL,NULL,&maxits);
100: dvd_improvex_jd_lit_const(d,b,maxits,tol,fix);
101: }
103: check_sum1 = DVD_CHECKSUM(b);
104: if (check_sum0 != check_sum1) SETERRQ(PETSC_COMM_SELF,1, "Something awful happened");
105: return(0);
106: }