LCOV - code coverage report
Current view: top level - sys/classes/bv/tests - test5.c (source / functions) Hit Total Coverage
Test: SLEPc Lines: 84 87 96.6 %
Date: 2024-05-02 00:43:15 Functions: 1 1 100.0 %
Legend: Lines: hit not hit

          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 BV operations with indefinite inner product.\n\n";
      12             : 
      13             : #include <slepcbv.h>
      14             : 
      15           8 : int main(int argc,char **argv)
      16             : {
      17           8 :   Vec            t,v,w,omega;
      18           8 :   Mat            B,M;
      19           8 :   BV             X,Y;
      20           8 :   PetscInt       i,j,n=10,k=5,l,Istart,Iend;
      21           8 :   PetscScalar    alpha;
      22           8 :   PetscReal      nrm;
      23           8 :   PetscViewer    view;
      24           8 :   PetscBool      verbose;
      25             : 
      26           8 :   PetscFunctionBeginUser;
      27           8 :   PetscCall(SlepcInitialize(&argc,&argv,(char*)0,help));
      28           8 :   PetscCall(PetscOptionsGetInt(NULL,NULL,"-n",&n,NULL));
      29           8 :   PetscCall(PetscOptionsGetInt(NULL,NULL,"-k",&k,NULL));
      30           8 :   PetscCall(PetscOptionsHasName(NULL,NULL,"-verbose",&verbose));
      31           8 :   PetscCall(PetscPrintf(PETSC_COMM_WORLD,"Test BV with indefinite inner product (n=%" PetscInt_FMT ", k=%" PetscInt_FMT ").\n",n,k));
      32             : 
      33             :   /* Create inner product matrix (standard involutionary permutation) */
      34           8 :   PetscCall(MatCreate(PETSC_COMM_WORLD,&B));
      35           8 :   PetscCall(MatSetSizes(B,PETSC_DECIDE,PETSC_DECIDE,n,n));
      36           8 :   PetscCall(MatSetFromOptions(B));
      37           8 :   PetscCall(PetscObjectSetName((PetscObject)B,"B"));
      38             : 
      39           8 :   PetscCall(MatGetOwnershipRange(B,&Istart,&Iend));
      40          88 :   for (i=Istart;i<Iend;i++) PetscCall(MatSetValue(B,i,n-i-1,1.0,INSERT_VALUES));
      41           8 :   PetscCall(MatAssemblyBegin(B,MAT_FINAL_ASSEMBLY));
      42           8 :   PetscCall(MatAssemblyEnd(B,MAT_FINAL_ASSEMBLY));
      43           8 :   PetscCall(MatCreateVecs(B,&t,NULL));
      44             : 
      45             :   /* Create BV object X */
      46           8 :   PetscCall(BVCreate(PETSC_COMM_WORLD,&X));
      47           8 :   PetscCall(PetscObjectSetName((PetscObject)X,"X"));
      48           8 :   PetscCall(BVSetSizesFromVec(X,t,k));
      49           8 :   PetscCall(BVSetFromOptions(X));
      50           8 :   PetscCall(BVSetMatrix(X,B,PETSC_TRUE));
      51             : 
      52             :   /* Set up viewer */
      53           8 :   PetscCall(PetscViewerASCIIGetStdout(PETSC_COMM_WORLD,&view));
      54           8 :   if (verbose) PetscCall(PetscViewerPushFormat(view,PETSC_VIEWER_ASCII_MATLAB));
      55             : 
      56             :   /* Fill X entries */
      57             :   l = -3;
      58          48 :   for (j=0;j<k;j++) {
      59          40 :     PetscCall(BVGetColumn(X,j,&v));
      60          40 :     PetscCall(VecSet(v,-1.0));
      61         240 :     for (i=0;i<n/2;i++) {
      62         200 :       if (i+j<n) {
      63         200 :         l = (l + 3*i+j-2) % n;
      64         200 :         PetscCall(VecSetValue(v,i+j,(PetscScalar)l,INSERT_VALUES));
      65             :       }
      66             :     }
      67          40 :     PetscCall(VecAssemblyBegin(v));
      68          40 :     PetscCall(VecAssemblyEnd(v));
      69          40 :     PetscCall(BVRestoreColumn(X,j,&v));
      70             :   }
      71           8 :   if (verbose) {
      72           0 :     PetscCall(MatView(B,view));
      73           0 :     PetscCall(BVView(X,view));
      74             :   }
      75             : 
      76             :   /* Test BVNormColumn */
      77           8 :   PetscCall(BVNormColumn(X,0,NORM_2,&nrm));
      78           8 :   PetscCall(PetscPrintf(PETSC_COMM_WORLD,"B-Norm of X[0] = %g\n",(double)nrm));
      79             : 
      80             :   /* Test BVOrthogonalizeColumn */
      81          48 :   for (j=0;j<k;j++) {
      82          40 :     PetscCall(BVOrthogonalizeColumn(X,j,NULL,&nrm,NULL));
      83          40 :     alpha = 1.0/nrm;
      84          40 :     PetscCall(BVScaleColumn(X,j,alpha));
      85             :   }
      86           8 :   if (verbose) PetscCall(BVView(X,view));
      87             : 
      88             :   /* Create a copy on Y */
      89           8 :   PetscCall(BVDuplicate(X,&Y));
      90           8 :   PetscCall(PetscObjectSetName((PetscObject)Y,"Y"));
      91           8 :   PetscCall(BVCopy(X,Y));
      92             : 
      93             :   /* Check orthogonality */
      94           8 :   PetscCall(MatCreateSeqDense(PETSC_COMM_SELF,k,k,NULL,&M));
      95           8 :   PetscCall(BVDot(Y,Y,M));
      96           8 :   PetscCall(VecCreateSeq(PETSC_COMM_SELF,k,&omega));
      97           8 :   PetscCall(BVGetSignature(Y,omega));
      98           8 :   PetscCall(VecScale(omega,-1.0));
      99           8 :   PetscCall(MatDiagonalSet(M,omega,ADD_VALUES));
     100           8 :   PetscCall(MatNorm(M,NORM_1,&nrm));
     101           8 :   if (nrm<100*PETSC_MACHINE_EPSILON) PetscCall(PetscPrintf(PETSC_COMM_WORLD,"Level of orthogonality < 100*eps\n"));
     102           0 :   else PetscCall(PetscPrintf(PETSC_COMM_WORLD,"Level of orthogonality: %g\n",(double)nrm));
     103             : 
     104             :   /* Test BVSetSignature */
     105           8 :   PetscCall(VecScale(omega,-1.0));
     106           8 :   PetscCall(BVSetSignature(Y,omega));
     107           8 :   PetscCall(VecDestroy(&omega));
     108             : 
     109             :   /* Test BVApplyMatrix */
     110           8 :   PetscCall(VecDuplicate(t,&w));
     111           8 :   PetscCall(BVGetColumn(X,0,&v));
     112           8 :   PetscCall(BVApplyMatrix(X,v,w));
     113           8 :   PetscCall(BVApplyMatrix(X,w,t));
     114           8 :   PetscCall(VecAXPY(t,-1.0,v));
     115           8 :   PetscCall(BVRestoreColumn(X,0,&v));
     116           8 :   PetscCall(VecNorm(t,NORM_2,&nrm));
     117           8 :   PetscCheck(PetscAbsReal(nrm)<10*PETSC_MACHINE_EPSILON,PETSC_COMM_WORLD,PETSC_ERR_FP,"Wrong value, nrm = %g",(double)nrm);
     118             : 
     119           8 :   PetscCall(BVApplyMatrixBV(X,Y));
     120           8 :   PetscCall(BVGetColumn(Y,0,&v));
     121           8 :   PetscCall(VecAXPY(w,-1.0,v));
     122           8 :   PetscCall(BVRestoreColumn(Y,0,&v));
     123           8 :   PetscCall(VecNorm(w,NORM_2,&nrm));
     124           8 :   PetscCheck(PetscAbsReal(nrm)<10*PETSC_MACHINE_EPSILON,PETSC_COMM_WORLD,PETSC_ERR_FP,"Wrong value, nrm = %g",(double)nrm);
     125             : 
     126           8 :   PetscCall(BVDestroy(&X));
     127           8 :   PetscCall(BVDestroy(&Y));
     128           8 :   PetscCall(MatDestroy(&M));
     129           8 :   PetscCall(MatDestroy(&B));
     130           8 :   PetscCall(VecDestroy(&w));
     131           8 :   PetscCall(VecDestroy(&t));
     132           8 :   PetscCall(SlepcFinalize());
     133             :   return 0;
     134             : }
     135             : 
     136             : /*TEST
     137             : 
     138             :    testset:
     139             :       output_file: output/test5_1.out
     140             :       args: -bv_orthog_refine always
     141             :       test:
     142             :          suffix: 1
     143             :          args: -bv_type {{vecs contiguous svec mat}shared output}
     144             :       test:
     145             :          suffix: 1_cuda
     146             :          args: -bv_type {{svec mat}} -mat_type aijcusparse
     147             :          requires: cuda
     148             :       test:
     149             :          suffix: 2
     150             :          args: -bv_type {{vecs contiguous svec mat}shared output} -bv_orthog_type mgs
     151             :       test:
     152             :          suffix: 2_cuda
     153             :          args: -bv_type {{svec mat}} -mat_type aijcusparse -bv_orthog_type mgs
     154             :          requires: cuda
     155             : 
     156             : TEST*/

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