Actual source code: slepc-interface.c
1: /*
2: Modification of the *temp* implementation of the BLOPEX multivector in order
3: to wrap created PETSc vectors as multivectors.
5: - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
6: SLEPc - Scalable Library for Eigenvalue Problem Computations
7: Copyright (c) 2002-2009, Universidad Politecnica de Valencia, Spain
9: This file is part of SLEPc.
10:
11: SLEPc is free software: you can redistribute it and/or modify it under the
12: terms of version 3 of the GNU Lesser General Public License as published by
13: the Free Software Foundation.
15: SLEPc is distributed in the hope that it will be useful, but WITHOUT ANY
16: WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
17: FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for
18: more details.
20: You should have received a copy of the GNU Lesser General Public License
21: along with SLEPc. If not, see <http://www.gnu.org/licenses/>.
22: - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
23: */
25: #include "petscsys.h"
26: #include "petscvec.h"
27: #include "petscmat.h"
28: #include <assert.h>
29: #include <stdlib.h>
30: #include "petscblaslapack.h"
31: #include "interpreter.h"
32: #include "temp_multivector.h"
33: #include "../src/contrib/blopex/petsc-interface/petsc-interface.h"
34: #include "slepc-interface.h"
36: static void* mv_TempMultiVectorCreateFromPETScVector( void* ii_, int n, void* sample )
37: {
38: int i;
39: Vec *vecs = (Vec*)sample;
41: mv_TempMultiVector* x;
42: mv_InterfaceInterpreter* ii = (mv_InterfaceInterpreter*)ii_;
44: x = (mv_TempMultiVector*) malloc(sizeof(mv_TempMultiVector));
45: assert( x != NULL );
46:
47: x->interpreter = ii;
48: x->numVectors = n;
49:
50: x->vector = (void**) calloc( n, sizeof(void*) );
51: assert( x->vector != NULL );
53: x->ownsVectors = 1;
54: x->mask = NULL;
55: x->ownsMask = 0;
57: for ( i = 0; i < n; i++ ) {
58: x->vector[i] = (void*)vecs[i];
59: }
61: return x;
62: }
64: static void mv_TempMultiPETSCVectorDestroy( void* x_ )
65: {
66: mv_TempMultiVector* x = (mv_TempMultiVector*)x_;
68: if ( x == NULL )
69: return;
71: if ( x->ownsVectors && x->vector != NULL ) {
72: free(x->vector);
73: }
74: if ( x->mask && x->ownsMask )
75: free(x->mask);
76: free(x);
77: }
80: /*
81: Create an InterfaceInterpreter using the PETSc implementation
82: but with a modified CreateMultiVector that doesn't create any
83: new vector.
84: */
85: int SLEPCSetupInterpreter( mv_InterfaceInterpreter *i )
86: {
88: i->CreateVector = PETSC_MimicVector;
89: i->DestroyVector = PETSC_DestroyVector;
90: i->InnerProd = PETSC_InnerProd;
91: i->CopyVector = PETSC_CopyVector;
92: i->ClearVector = PETSC_ClearVector;
93: i->SetRandomValues = PETSC_SetRandomValues;
94: i->ScaleVector = PETSC_ScaleVector;
95: i->Axpy = PETSC_Axpy;
97: /* Multivector part */
99: i->CreateMultiVector = mv_TempMultiVectorCreateFromPETScVector;
100: i->CopyCreateMultiVector = mv_TempMultiVectorCreateCopy;
101: i->DestroyMultiVector = mv_TempMultiVectorDestroy;
103: i->Width = mv_TempMultiVectorWidth;
104: i->Height = mv_TempMultiVectorHeight;
105: i->SetMask = mv_TempMultiVectorSetMask;
106: i->CopyMultiVector = mv_TempMultiVectorCopy;
107: i->ClearMultiVector = mv_TempMultiVectorClear;
108: i->SetRandomVectors = mv_TempMultiVectorSetRandom;
109: i->MultiInnerProd = mv_TempMultiVectorByMultiVector;
110: i->MultiInnerProdDiag = mv_TempMultiVectorByMultiVectorDiag;
111: i->MultiVecMat = mv_TempMultiVectorByMatrix;
112: i->MultiVecMatDiag = mv_TempMultiVectorByDiagonal;
113: i->MultiAxpy = mv_TempMultiVectorAxpy;
114: i->MultiXapy = mv_TempMultiVectorXapy;
115: i->Eval = mv_TempMultiVectorEval;
117: return 0;
118: }
120: /*
121: Change the multivector destructor in order to destroy the multivector
122: structure without destroy the PETSc vectors.
123: */
124: void SLEPCSetupInterpreterForDignifiedDeath( mv_InterfaceInterpreter *i )
125: {
126: i->DestroyMultiVector = mv_TempMultiPETSCVectorDestroy;
127: }