Line data    Source code

       1             : /*
       2             :    - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
       3             :    SLEPc - Scalable Library for Eigenvalue Problem Computations
       4             :    Copyright (c) 2002-, Universitat Politecnica de Valencia, Spain
       5             : 
       6             :    This file is part of SLEPc.
       7             :    SLEPc is distributed under a 2-clause BSD license (see LICENSE).
       8             :    - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
       9             : */
      10             : 
      11             : static char help[] = "Test EPS view and monitor functionality.\n\n";
      12             : 
      13             : #include <slepceps.h>
      14             : 
      15           2 : int main(int argc,char **argv)
      16             : {
      17           2 :   Mat            A;
      18           2 :   EPS            eps;
      19           2 :   PetscInt       n=6,Istart,Iend,i;
      20             : 
      21           2 :   PetscFunctionBeginUser;
      22           2 :   PetscCall(SlepcInitialize(&argc,&argv,NULL,help));
      23           2 :   PetscCall(PetscOptionsGetInt(NULL,NULL,"-n",&n,NULL));
      24           2 :   PetscCall(PetscPrintf(PETSC_COMM_WORLD,"\nEPS of diagonal problem, n=%" PetscInt_FMT "\n\n",n));
      25             : 
      26             :   /* - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
      27             :         Generate the matrix
      28             :      - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - */
      29           2 :   PetscCall(MatCreate(PETSC_COMM_WORLD,&A));
      30           2 :   PetscCall(MatSetSizes(A,PETSC_DECIDE,PETSC_DECIDE,n,n));
      31           2 :   PetscCall(MatSetFromOptions(A));
      32           2 :   PetscCall(MatGetOwnershipRange(A,&Istart,&Iend));
      33          28 :   for (i=Istart;i<Iend;i++) PetscCall(MatSetValue(A,i,i,i+1,INSERT_VALUES));
      34           2 :   PetscCall(MatAssemblyBegin(A,MAT_FINAL_ASSEMBLY));
      35           2 :   PetscCall(MatAssemblyEnd(A,MAT_FINAL_ASSEMBLY));
      36             : 
      37             :   /* - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
      38             :                      Create the EPS solver
      39             :      - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - */
      40           2 :   PetscCall(EPSCreate(PETSC_COMM_WORLD,&eps));
      41           2 :   PetscCall(PetscObjectSetName((PetscObject)eps,"eps"));
      42           2 :   PetscCall(EPSSetOperators(eps,A,NULL));
      43           2 :   PetscCall(EPSSetFromOptions(eps));
      44             : 
      45             :   /* - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
      46             :                 Solve the eigensystem and display solution
      47             :      - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - */
      48           2 :   PetscCall(EPSSolve(eps));
      49           2 :   PetscCall(EPSErrorView(eps,EPS_ERROR_RELATIVE,NULL));
      50           2 :   PetscCall(EPSDestroy(&eps));
      51           2 :   PetscCall(MatDestroy(&A));
      52           2 :   PetscCall(SlepcFinalize());
      53             :   return 0;
      54             : }
      55             : 
      56             : /*TEST
      57             : 
      58             :    test:
      59             :       suffix: 1
      60             :       args: -eps_error_backward ::ascii_info_detail -eps_largest_real -eps_balance oneside -eps_view_values -eps_monitor_conv -eps_error_absolute ::ascii_matlab -eps_monitor_all -eps_converged_reason -eps_view
      61             :       requires: !single
      62             :       filter: grep -v "tolerance" | sed -e "s/hermitian/symmetric/" -e "s/[+-]0\.0*i//g" -e "s/\([1-6]\.\)[+-][0-9]\.[0-9]*e-[0-9]*i/\\1/g" -e "s/[0-9]\.[0-9]*e-\([0-9]*\)/removed/g"
      63             : 
      64             :    test:
      65             :       suffix: 2
      66             :       args: -n 20 -eps_largest_real -eps_monitor -eps_view_values ::ascii_matlab
      67             :       requires: double
      68             :       filter: sed -e "s/[+-][0-9]\.[0-9]*e-[0-9]*i//" -e "s/[0-9]\.[0-9]*e-\([0-9]*\)/removed/g" -e "s/2\.[0-9]*e+01/2.0000000000000000e+01/" -e "s/1\.9999999999[0-9]*e+01/2.0000000000000000e+01/"
      69             : 
      70             :    test:
      71             :       suffix: 3
      72             :       args: -n 20 -eps_largest_real -eps_monitor draw::draw_lg -eps_monitor_all draw::draw_lg -eps_view_values draw -draw_save myeigen.ppm -draw_virtual
      73             :       requires: x double
      74             : 
      75             : TEST*/