Date: 2015-09-03T15:04:59+00:00

Actual source code: petsc-interface.c
slepc-3.6.1 2015-09-03
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      1: /* @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@ */
      2: /* @@@ BLOPEX (version 1.1) LGPL Version 2.1 or above.See www.gnu.org. */
      3: /* @@@ Copyright 2010 BLOPEX team http://code.google.com/p/blopex/     */
      4: /* @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@ */
      5: /* This code was developed by Merico Argentati, Andrew Knyazev, Ilya Lashuk and Evgueni Ovtchinnikov */

      7: #include <petscvec.h>
      8: #include <petscblaslapack.h>
      9: #include "blopex_interpreter.h"
     10: #include "blopex_temp_multivector.h"
     11: #include "blopex_fortran_matrix.h"

     13: static PetscRandom LOBPCG_RandomContext = NULL;

     15: BlopexInt PETSC_dpotrf_interface (char *uplo,BlopexInt *n,double *a,BlopexInt * lda,BlopexInt *info)
     16: {
     17:   PetscBLASInt n_,lda_,info_;

     19:   /* type conversion */
     20:   n_ = *n;
     21:   lda_ = *lda;
     22:   info_ = *info;

     24:   LAPACKpotrf_(uplo,&n_,(PetscScalar*)a,&lda_,&info_);

     26:   *info = info_;
     27:   return 0;
     28: }

     30: BlopexInt PETSC_zpotrf_interface (char *uplo,BlopexInt *n,komplex *a,BlopexInt* lda,BlopexInt *info)
     31: {
     32:   PetscBLASInt n_,lda_,info_;

     34:   /* type conversion */
     35:   n_ = *n;
     36:   lda_ = (PetscBLASInt)*lda;

     38:   LAPACKpotrf_(uplo,&n_,(PetscScalar*)a,&lda_,&info_);

     40:   *info = info_;
     41:   return 0;
     42: }

     44: BlopexInt PETSC_dsygv_interface (BlopexInt *itype,char *jobz,char *uplo,BlopexInt *n,double *a,BlopexInt *lda,double *b,BlopexInt *ldb,double *w,double *work,BlopexInt *lwork,BlopexInt *info)
     45: {
     46: #if !defined(PETSC_USE_COMPLEX)
     47:   PetscBLASInt itype_,n_,lda_,ldb_,lwork_,info_;

     49:   itype_ = *itype;
     50:   n_ = *n;
     51:   lda_ = *lda;
     52:   ldb_ = *ldb;
     53:   lwork_ = *lwork;
     54:   info_ = *info;

     56:   LAPACKsygv_(&itype_,jobz,uplo,&n_,(PetscScalar*)a,&lda_,(PetscScalar*)b,&ldb_,(PetscScalar*)w,(PetscScalar*)work,&lwork_,&info_);

     58:   *info = info_;
     59: #endif
     60:   return 0;
     61: }

     63: BlopexInt PETSC_zsygv_interface (BlopexInt *itype,char *jobz,char *uplo,BlopexInt *n,komplex *a,BlopexInt *lda,komplex *b,BlopexInt *ldb,double *w,komplex *work,BlopexInt *lwork,double *rwork,BlopexInt *info)
     64: {
     65: #if defined(PETSC_USE_COMPLEX)
     66:   PetscBLASInt itype_,n_,lda_,ldb_,lwork_,info_;

     68:   itype_ = *itype;
     69:   n_ = *n;
     70:   lda_ = *lda;
     71:   ldb_ = *ldb;
     72:   lwork_ = *lwork;
     73:   info_ = *info;

     75:   LAPACKsygv_(&itype_,jobz,uplo,&n_,(PetscScalar*)a,&lda_,(PetscScalar*)b,&ldb_,(PetscReal*)w,(PetscScalar*)work,&lwork_,(PetscReal*)rwork,&info_);

     77:   *info = info_;
     78: #endif
     79:   return 0;
     80: }

     82: void *PETSC_MimicVector(void *vvector)
     83: {
     84:   PetscErrorCode  ierr;
     85:   Vec temp;

     87:   VecDuplicate((Vec)vvector,&temp);CHKERRABORT(PETSC_COMM_SELF,ierr);
     88:   return (void*)temp;
     89: }

     91: BlopexInt PETSC_DestroyVector(void *vvector)
     92: {
     94:   Vec v = (Vec)vvector;

     96:   VecDestroy(&v);
     97:   return 0;
     98: }

    100: BlopexInt PETSC_InnerProd(void *x,void *y,void *result)
    101: {

    104:   VecDot((Vec)x,(Vec)y,(PetscScalar*)result);
    105:   return 0;
    106: }

    108: BlopexInt PETSC_CopyVector(void *x,void *y)
    109: {
    110:   PetscErrorCode  ierr;

    112:   VecCopy((Vec)x,(Vec)y);
    113:   return 0;
    114: }

    116: BlopexInt PETSC_ClearVector(void *x)
    117: {
    118:   PetscErrorCode  ierr;

    120:   VecSet((Vec)x,0.0);
    121:   return 0;
    122: }

    124: BlopexInt PETSC_SetRandomValues(void* v,BlopexInt seed)
    125: {

    128:   /* note: without previous call to LOBPCG_InitRandomContext LOBPCG_RandomContext will be null,
    129:     and VecSetRandom will use internal petsc random context */

    131:   VecSetRandom((Vec)v,LOBPCG_RandomContext);
    132:   return 0;
    133: }

    135: BlopexInt PETSC_ScaleVector(double alpha,void *x)
    136: {

    139:   VecScale((Vec)x,alpha);
    140:   return 0;
    141: }

    143: BlopexInt PETSC_Axpy(void *alpha,void *x,void *y)
    144: {

    147:   VecAXPY((Vec)y,*(PetscScalar*)alpha,(Vec)x);
    148:   return 0;
    149: }

    151: BlopexInt PETSC_VectorSize(void *x)
    152: {
    153:   PetscInt N;
    154:   VecGetSize((Vec)x,&N);
    155:   return N;
    156: }

    158: int LOBPCG_InitRandomContext(MPI_Comm comm,PetscRandom rand)
    159: {
    161:   /* PetscScalar rnd_bound = 1.0; */

    163:   if (rand) {
    164:     PetscObjectReference((PetscObject)rand);
    165:     PetscRandomDestroy(&LOBPCG_RandomContext);
    166:     LOBPCG_RandomContext = rand;
    167:   } else {
    168:     PetscRandomCreate(comm,&LOBPCG_RandomContext);
    169:   }
    170:   return 0;
    171: }

    173: int LOBPCG_SetFromOptionsRandomContext(void)
    174: {
    176:   PetscRandomSetFromOptions(LOBPCG_RandomContext);

    178: #if defined(PETSC_USE_COMPLEX)
    179:   PetscRandomSetInterval(LOBPCG_RandomContext,(PetscScalar)-1.0-1.0*PETSC_i,(PetscScalar)1.0+1.0*PETSC_i);
    180: #else
    181:   PetscRandomSetInterval(LOBPCG_RandomContext,(PetscScalar)-1.0,(PetscScalar)1.0);
    182: #endif
    183:   return 0;
    184: }

    186: int LOBPCG_DestroyRandomContext(void)
    187: {

    190:   PetscRandomDestroy(&LOBPCG_RandomContext);
    191:   return 0;
    192: }

    194: int PETSCSetupInterpreter(mv_InterfaceInterpreter *i)
    195: {
    196:   i->CreateVector = PETSC_MimicVector;
    197:   i->DestroyVector = PETSC_DestroyVector;
    198:   i->InnerProd = PETSC_InnerProd;
    199:   i->CopyVector = PETSC_CopyVector;
    200:   i->ClearVector = PETSC_ClearVector;
    201:   i->SetRandomValues = PETSC_SetRandomValues;
    202:   i->ScaleVector = PETSC_ScaleVector;
    203:   i->Axpy = PETSC_Axpy;
    204:   i->VectorSize = PETSC_VectorSize;

    206:   /* Multivector part */

    208:   i->CreateMultiVector = mv_TempMultiVectorCreateFromSampleVector;
    209:   i->CopyCreateMultiVector = mv_TempMultiVectorCreateCopy;
    210:   i->DestroyMultiVector = mv_TempMultiVectorDestroy;

    212:   i->Width = mv_TempMultiVectorWidth;
    213:   i->Height = mv_TempMultiVectorHeight;
    214:   i->SetMask = mv_TempMultiVectorSetMask;
    215:   i->CopyMultiVector = mv_TempMultiVectorCopy;
    216:   i->ClearMultiVector = mv_TempMultiVectorClear;
    217:   i->SetRandomVectors = mv_TempMultiVectorSetRandom;
    218:   i->Eval = mv_TempMultiVectorEval;

    220: #if defined(PETSC_USE_COMPLEX)
    221:   i->MultiInnerProd = mv_TempMultiVectorByMultiVector_complex;
    222:   i->MultiInnerProdDiag = mv_TempMultiVectorByMultiVectorDiag_complex;
    223:   i->MultiVecMat = mv_TempMultiVectorByMatrix_complex;
    224:   i->MultiVecMatDiag = mv_TempMultiVectorByDiagonal_complex;
    225:   i->MultiAxpy = mv_TempMultiVectorAxpy_complex;
    226:   i->MultiXapy = mv_TempMultiVectorXapy_complex;
    227: #else
    228:   i->MultiInnerProd = mv_TempMultiVectorByMultiVector;
    229:   i->MultiInnerProdDiag = mv_TempMultiVectorByMultiVectorDiag;
    230:   i->MultiVecMat = mv_TempMultiVectorByMatrix;
    231:   i->MultiVecMatDiag = mv_TempMultiVectorByDiagonal;
    232:   i->MultiAxpy = mv_TempMultiVectorAxpy;
    233:   i->MultiXapy = mv_TempMultiVectorXapy;
    234: #endif

    236:   return 0;
    237: }