Date: 2024-12-02T08:57:04+00:00

Actual source code: test25.c
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: */

     11: static char help[] = "Solves a GNHEP problem with contour integral. "
     12:   "Based on ex7.\n"
     13:   "The command line options are:\n"
     14:   "  -f1 <filename> -f2 <filename>, PETSc binary files containing A and B.\n\n";

     16: #include <slepceps.h>

     18: int main(int argc,char **argv)
     19: {
     20:   EPS               eps;
     21:   RG                rg;
     22:   Mat               A,B;
     23:   PetscBool         flg;
     24:   EPSCISSExtraction extr;
     25:   EPSCISSQuadRule   quad;
     26:   char              filename[PETSC_MAX_PATH_LEN];
     27:   PetscViewer       viewer;

     29:   PetscFunctionBeginUser;
     30:   PetscCall(SlepcInitialize(&argc,&argv,NULL,help));
     31:   PetscCall(PetscPrintf(PETSC_COMM_WORLD,"\nGNHEP problem with contour integral\n\n"));

     33:   /* - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
     34:         Load the matrices that define the eigensystem, Ax=kBx
     35:      - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - */

     37:   PetscCall(PetscOptionsGetString(NULL,NULL,"-f1",filename,sizeof(filename),&flg));
     38:   PetscCheck(flg,PETSC_COMM_WORLD,PETSC_ERR_USER_INPUT,"Must indicate a file name for matrix A with the -f1 option");

     40: #if defined(PETSC_USE_COMPLEX)
     41:   PetscCall(PetscPrintf(PETSC_COMM_WORLD," Reading COMPLEX matrices from binary files...\n"));
     42: #else
     43:   PetscCall(PetscPrintf(PETSC_COMM_WORLD," Reading REAL matrices from binary files...\n"));
     44: #endif
     45:   PetscCall(PetscViewerBinaryOpen(PETSC_COMM_WORLD,filename,FILE_MODE_READ,&viewer));
     46:   PetscCall(MatCreate(PETSC_COMM_WORLD,&A));
     47:   PetscCall(MatSetFromOptions(A));
     48:   PetscCall(MatLoad(A,viewer));
     49:   PetscCall(PetscViewerDestroy(&viewer));

     51:   PetscCall(PetscOptionsGetString(NULL,NULL,"-f2",filename,sizeof(filename),&flg));
     52:   if (flg) {
     53:     PetscCall(PetscViewerBinaryOpen(PETSC_COMM_WORLD,filename,FILE_MODE_READ,&viewer));
     54:     PetscCall(MatCreate(PETSC_COMM_WORLD,&B));
     55:     PetscCall(MatSetFromOptions(B));
     56:     PetscCall(MatLoad(B,viewer));
     57:     PetscCall(PetscViewerDestroy(&viewer));
     58:   } else {
     59:     PetscCall(PetscPrintf(PETSC_COMM_WORLD," Matrix B was not provided, setting B=I\n\n"));
     60:     B = NULL;
     61:   }

     63:   /* - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
     64:                 Create the eigensolver and solve the problem
     65:      - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - */

     67:   PetscCall(EPSCreate(PETSC_COMM_WORLD,&eps));
     68:   PetscCall(EPSSetOperators(eps,A,B));
     69:   PetscCall(EPSSetProblemType(eps,EPS_GNHEP));
     70:   PetscCall(EPSSetTolerances(eps,1e-9,PETSC_CURRENT));

     72:   /* set CISS solver with various options */
     73:   PetscCall(EPSSetType(eps,EPSCISS));
     74:   PetscCall(EPSCISSSetExtraction(eps,EPS_CISS_EXTRACTION_HANKEL));
     75:   PetscCall(EPSCISSSetQuadRule(eps,EPS_CISS_QUADRULE_CHEBYSHEV));
     76:   PetscCall(EPSCISSSetUseST(eps,PETSC_TRUE));
     77:   PetscCall(EPSGetRG(eps,&rg));
     78:   PetscCall(RGSetType(rg,RGINTERVAL));
     79:   PetscCall(RGIntervalSetEndpoints(rg,-3000.0,0.0,0.0,0.0));

     81:   PetscCall(EPSSetFromOptions(eps));

     83:   PetscCall(EPSSolve(eps));
     84:   PetscCall(PetscObjectTypeCompare((PetscObject)eps,EPSCISS,&flg));
     85:   if (flg) {
     86:     PetscCall(EPSCISSGetExtraction(eps,&extr));
     87:     PetscCall(EPSCISSGetQuadRule(eps,&quad));
     88:     PetscCall(PetscPrintf(PETSC_COMM_WORLD," Solved with CISS using %s extraction with %s quadrature rule\n\n",EPSCISSExtractions[extr],EPSCISSQuadRules[quad]));
     89:   }

     91:   /* - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
     92:                     Display solution and clean up
     93:      - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - */

     95:   PetscCall(EPSErrorView(eps,EPS_ERROR_BACKWARD,NULL));
     96:   PetscCall(EPSDestroy(&eps));
     97:   PetscCall(MatDestroy(&A));
     98:   PetscCall(MatDestroy(&B));
     99:   PetscCall(SlepcFinalize());
    100:   return 0;
    101: }

    103: /*TEST

    105:    testset:
    106:       args: -f1 ${SLEPC_DIR}/share/slepc/datafiles/matrices/bfw62a.petsc -f2 ${SLEPC_DIR}/share/slepc/datafiles/matrices/bfw62b.petsc
    107:       output_file: output/test25_1.out
    108:       test:
    109:          suffix: 1
    110:          requires: double !complex !defined(PETSC_USE_64BIT_INDICES)
    111:       test:
    112:          suffix: 1_cuda
    113:          args: -mat_type aijcusparse -st_pc_factor_mat_solver_type cusparse
    114:          requires: cuda double !complex !defined(PETSC_USE_64BIT_INDICES)
    115:       test:
    116:          suffix: 1_hip
    117:          args: -mat_type aijhipsparse -st_pc_factor_mat_solver_type hipsparse
    118:          requires: hip double !complex !defined(PETSC_USE_64BIT_INDICES)

    120:    testset:
    121:       args: -f1 ${DATAFILESPATH}/matrices/complex/qc324.petsc -rg_type ellipse -rg_ellipse_center 1-0.09i -rg_ellipse_radius 0.15 -rg_ellipse_vscale 0.1
    122:       output_file: output/test25_2.out
    123:       test:
    124:          suffix: 2
    125:          requires: double complex datafilespath !defined(PETSC_USE_64BIT_INDICES)
    126:       test:
    127:          suffix: 2_cuda
    128:          args: -mat_type aijcusparse -st_pc_factor_mat_solver_type cusparse
    129:          requires: cuda double complex datafilespath !defined(PETSC_USE_64BIT_INDICES)
    130:       test:
    131:          suffix: 2_hip
    132:          args: -mat_type aijhipsparse -st_pc_factor_mat_solver_type hipsparse
    133:          requires: hip double complex datafilespath !defined(PETSC_USE_64BIT_INDICES)

    135: TEST*/