Date: 2022-08-09T09:05:38+00:00

Actual source code: test25.c
slepc-3.17.2 2022-08-09
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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:   SlepcInitialize(&argc,&argv,(char*)0,help);
     30:   PetscPrintf(PETSC_COMM_WORLD,"\nGNHEP problem with contour integral\n\n");

     32:   /* - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
     33:         Load the matrices that define the eigensystem, Ax=kBx
     34:      - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - */

     36:   PetscOptionsGetString(NULL,NULL,"-f1",filename,sizeof(filename),&flg);

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

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

     62:   /* - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
     63:                 Create the eigensolver and solve the problem
     64:      - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - */

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

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

     80:   EPSSetFromOptions(eps);

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

     90:   /* - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
     91:                     Display solution and clean up
     92:      - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - */

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

    102: /*TEST

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

    115:    testset:
    116:       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
    117:       output_file: output/test25_2.out
    118:       test:
    119:          suffix: 2
    120:          requires: double complex datafilespath !defined(PETSC_USE_64BIT_INDICES)
    121:       test:
    122:          suffix: 2_cuda
    123:          args: -mat_type aijcusparse -st_pc_factor_mat_solver_type cusparse
    124:          requires: cuda double complex datafilespath !defined(PETSC_USE_64BIT_INDICES)

    126: TEST*/