| Line | Branch | Exec | Source |
|---|---|---|---|
| 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 PEP interface functions.\n\n"; | ||
| 12 | |||
| 13 | #include <slepcpep.h> | ||
| 14 | |||
| 15 | 10 | int main(int argc,char **argv) | |
| 16 | { | ||
| 17 | 10 | Mat A[3],B; /* problem matrices */ | |
| 18 | 10 | PEP pep; /* eigenproblem solver context */ | |
| 19 | 10 | ST st; | |
| 20 | 10 | KSP ksp; | |
| 21 | 10 | Vec Dl,Dr; | |
| 22 | 10 | DS ds; | |
| 23 | 10 | PetscReal tol,alpha; | |
| 24 | 10 | PetscScalar target; | |
| 25 | 10 | PetscInt n=20,i,its,nev,ncv,mpd,Istart,Iend,nmat; | |
| 26 | 10 | PEPWhich which; | |
| 27 | 10 | PEPConvergedReason reason; | |
| 28 | 10 | PEPType type; | |
| 29 | 10 | PEPExtract extr; | |
| 30 | 10 | PEPBasis basis; | |
| 31 | 10 | PEPScale scale; | |
| 32 | 10 | PEPRefine refine; | |
| 33 | 10 | PEPRefineScheme rscheme; | |
| 34 | 10 | PEPConv conv; | |
| 35 | 10 | PEPStop stop; | |
| 36 | 10 | PEPProblemType ptype; | |
| 37 | 10 | PetscViewerAndFormat *vf; | |
| 38 | |||
| 39 |
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10 | PetscFunctionBeginUser; |
| 40 |
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10 | PetscCall(SlepcInitialize(&argc,&argv,NULL,help)); |
| 41 |
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10 | PetscCall(PetscPrintf(PETSC_COMM_WORLD,"\nDiagonal Quadratic Eigenproblem, n=%" PetscInt_FMT "\n\n",n)); |
| 42 | |||
| 43 |
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10 | PetscCall(MatCreate(PETSC_COMM_WORLD,&A[0])); |
| 44 |
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10 | PetscCall(MatSetSizes(A[0],PETSC_DECIDE,PETSC_DECIDE,n,n)); |
| 45 |
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10 | PetscCall(MatSetFromOptions(A[0])); |
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10 | PetscCall(MatGetOwnershipRange(A[0],&Istart,&Iend)); |
| 47 |
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210 | for (i=Istart;i<Iend;i++) PetscCall(MatSetValue(A[0],i,i,i+1,INSERT_VALUES)); |
| 48 |
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10 | PetscCall(MatAssemblyBegin(A[0],MAT_FINAL_ASSEMBLY)); |
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10 | PetscCall(MatAssemblyEnd(A[0],MAT_FINAL_ASSEMBLY)); |
| 50 | |||
| 51 |
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10 | PetscCall(MatCreate(PETSC_COMM_WORLD,&A[1])); |
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10 | PetscCall(MatSetSizes(A[1],PETSC_DECIDE,PETSC_DECIDE,n,n)); |
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10 | PetscCall(MatSetFromOptions(A[1])); |
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10 | PetscCall(MatGetOwnershipRange(A[1],&Istart,&Iend)); |
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210 | for (i=Istart;i<Iend;i++) PetscCall(MatSetValue(A[1],i,i,1.0,INSERT_VALUES)); |
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10 | PetscCall(MatAssemblyBegin(A[1],MAT_FINAL_ASSEMBLY)); |
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10 | PetscCall(MatAssemblyEnd(A[1],MAT_FINAL_ASSEMBLY)); |
| 58 | |||
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10 | PetscCall(MatCreate(PETSC_COMM_WORLD,&A[2])); |
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10 | PetscCall(MatSetSizes(A[2],PETSC_DECIDE,PETSC_DECIDE,n,n)); |
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10 | PetscCall(MatSetFromOptions(A[2])); |
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10 | PetscCall(MatGetOwnershipRange(A[1],&Istart,&Iend)); |
| 63 |
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210 | for (i=Istart;i<Iend;i++) PetscCall(MatSetValue(A[2],i,i,n/(PetscReal)(i+1),INSERT_VALUES)); |
| 64 |
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10 | PetscCall(MatAssemblyBegin(A[2],MAT_FINAL_ASSEMBLY)); |
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10 | PetscCall(MatAssemblyEnd(A[2],MAT_FINAL_ASSEMBLY)); |
| 66 | |||
| 67 |
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10 | PetscCall(MatCreateVecs(A[0],&Dr,&Dl)); |
| 68 |
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10 | PetscCall(VecSet(Dl,1.0)); |
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10 | PetscCall(VecSet(Dr,0.95)); |
| 70 | |||
| 71 | /* - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - | ||
| 72 | Create eigensolver and test interface functions | ||
| 73 | - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - */ | ||
| 74 |
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10 | PetscCall(PEPCreate(PETSC_COMM_WORLD,&pep)); |
| 75 |
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10 | PetscCall(PEPSetOperators(pep,3,A)); |
| 76 |
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10 | PetscCall(PEPGetNumMatrices(pep,&nmat)); |
| 77 |
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10 | PetscCall(PetscPrintf(PETSC_COMM_WORLD," Polynomial of degree %" PetscInt_FMT "\n",nmat-1)); |
| 78 |
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10 | PetscCall(PEPGetOperators(pep,0,&B)); |
| 79 |
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10 | PetscCall(MatView(B,NULL)); |
| 80 | |||
| 81 |
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10 | PetscCall(PEPSetType(pep,PEPTOAR)); |
| 82 |
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10 | PetscCall(PEPGetType(pep,&type)); |
| 83 |
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10 | PetscCall(PetscPrintf(PETSC_COMM_WORLD," Type set to %s\n",type)); |
| 84 | |||
| 85 |
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10 | PetscCall(PEPGetProblemType(pep,&ptype)); |
| 86 |
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10 | PetscCall(PetscPrintf(PETSC_COMM_WORLD," Problem type before changing = %d",(int)ptype)); |
| 87 |
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10 | PetscCall(PEPSetProblemType(pep,PEP_HERMITIAN)); |
| 88 |
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10 | PetscCall(PEPGetProblemType(pep,&ptype)); |
| 89 |
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10 | PetscCall(PetscPrintf(PETSC_COMM_WORLD," ... changed to %d.\n",(int)ptype)); |
| 90 | |||
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10 | PetscCall(PEPGetExtract(pep,&extr)); |
| 92 |
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10 | PetscCall(PetscPrintf(PETSC_COMM_WORLD," Extraction before changing = %d",(int)extr)); |
| 93 |
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10 | PetscCall(PEPSetExtract(pep,PEP_EXTRACT_STRUCTURED)); |
| 94 |
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10 | PetscCall(PEPGetExtract(pep,&extr)); |
| 95 |
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10 | PetscCall(PetscPrintf(PETSC_COMM_WORLD," ... changed to %d\n",(int)extr)); |
| 96 | |||
| 97 |
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10 | PetscCall(PEPSetScale(pep,PEP_SCALE_BOTH,.1,Dl,Dr,5,1.0)); |
| 98 |
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10 | PetscCall(PEPGetScale(pep,&scale,&alpha,NULL,NULL,&its,NULL)); |
| 99 |
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10 | PetscCall(PetscPrintf(PETSC_COMM_WORLD," Scaling: %s, alpha=%g, its=%" PetscInt_FMT "\n",PEPScaleTypes[scale],(double)alpha,its)); |
| 100 | |||
| 101 |
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10 | PetscCall(PEPSetBasis(pep,PEP_BASIS_CHEBYSHEV1)); |
| 102 |
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10 | PetscCall(PEPGetBasis(pep,&basis)); |
| 103 |
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10 | PetscCall(PetscPrintf(PETSC_COMM_WORLD," Polynomial basis: %s\n",PEPBasisTypes[basis])); |
| 104 | |||
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10 | PetscCall(PEPSetRefine(pep,PEP_REFINE_SIMPLE,1,1e-9,2,PEP_REFINE_SCHEME_SCHUR)); |
| 106 |
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10 | PetscCall(PEPGetRefine(pep,&refine,NULL,&tol,&its,&rscheme)); |
| 107 |
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10 | PetscCall(PetscPrintf(PETSC_COMM_WORLD," Refinement: %s, tol=%g, its=%" PetscInt_FMT ", scheme=%s\n",PEPRefineTypes[refine],(double)tol,its,PEPRefineSchemes[rscheme])); |
| 108 | |||
| 109 |
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10 | PetscCall(PEPSetTarget(pep,4.8)); |
| 110 |
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10 | PetscCall(PEPGetTarget(pep,&target)); |
| 111 |
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10 | PetscCall(PEPSetWhichEigenpairs(pep,PEP_TARGET_MAGNITUDE)); |
| 112 |
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10 | PetscCall(PEPGetWhichEigenpairs(pep,&which)); |
| 113 |
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10 | PetscCall(PetscPrintf(PETSC_COMM_WORLD," Which = %d, target = %g\n",(int)which,(double)PetscRealPart(target))); |
| 114 | |||
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10 | PetscCall(PEPSetDimensions(pep,4,PETSC_DETERMINE,PETSC_DETERMINE)); |
| 116 |
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10 | PetscCall(PEPGetDimensions(pep,&nev,&ncv,&mpd)); |
| 117 |
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10 | PetscCall(PetscPrintf(PETSC_COMM_WORLD," Dimensions: nev=%" PetscInt_FMT ", ncv=%" PetscInt_FMT ", mpd=%" PetscInt_FMT "\n",nev,ncv,mpd)); |
| 118 | |||
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10 | PetscCall(PEPSetTolerances(pep,2.2e-4,200)); |
| 120 |
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10 | PetscCall(PEPGetTolerances(pep,&tol,&its)); |
| 121 |
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10 | PetscCall(PetscPrintf(PETSC_COMM_WORLD," Tolerance = %.5f, max_its = %" PetscInt_FMT "\n",(double)tol,its)); |
| 122 | |||
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10 | PetscCall(PEPSetConvergenceTest(pep,PEP_CONV_ABS)); |
| 124 |
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10 | PetscCall(PEPGetConvergenceTest(pep,&conv)); |
| 125 |
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10 | PetscCall(PEPSetStoppingTest(pep,PEP_STOP_BASIC)); |
| 126 |
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10 | PetscCall(PEPGetStoppingTest(pep,&stop)); |
| 127 |
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10 | PetscCall(PetscPrintf(PETSC_COMM_WORLD," Convergence test = %d, stopping test = %d\n",(int)conv,(int)stop)); |
| 128 | |||
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10 | PetscCall(PetscViewerAndFormatCreate(PETSC_VIEWER_STDOUT_WORLD,PETSC_VIEWER_DEFAULT,&vf)); |
| 130 |
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10 | PetscCall(PEPMonitorSet(pep,(PetscErrorCode (*)(PEP,PetscInt,PetscInt,PetscScalar*,PetscScalar*,PetscReal*,PetscInt,void*))PEPMonitorFirst,vf,(PetscCtxDestroyFn*)PetscViewerAndFormatDestroy)); |
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10 | PetscCall(PEPMonitorCancel(pep)); |
| 132 | |||
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10 | PetscCall(PEPGetST(pep,&st)); |
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10 | PetscCall(STGetKSP(st,&ksp)); |
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10 | PetscCall(KSPSetTolerances(ksp,1e-8,1e-35,PETSC_CURRENT,PETSC_CURRENT)); |
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10 | PetscCall(STView(st,NULL)); |
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10 | PetscCall(PEPGetDS(pep,&ds)); |
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10 | PetscCall(DSView(ds,NULL)); |
| 139 | |||
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10 | PetscCall(PEPSetFromOptions(pep)); |
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10 | PetscCall(PEPSolve(pep)); |
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10 | PetscCall(PEPGetConvergedReason(pep,&reason)); |
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10 | PetscCall(PetscPrintf(PETSC_COMM_WORLD," Finished - converged reason = %d\n",(int)reason)); |
| 144 | |||
| 145 | /* - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - | ||
| 146 | Display solution and clean up | ||
| 147 | - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - */ | ||
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10 | PetscCall(PEPErrorView(pep,PEP_ERROR_RELATIVE,NULL)); |
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10 | PetscCall(PEPDestroy(&pep)); |
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10 | PetscCall(MatDestroy(&A[0])); |
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10 | PetscCall(MatDestroy(&A[1])); |
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10 | PetscCall(MatDestroy(&A[2])); |
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10 | PetscCall(VecDestroy(&Dl)); |
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10 | PetscCall(VecDestroy(&Dr)); |
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10 | PetscCall(SlepcFinalize()); |
| 156 | return 0; | ||
| 157 | } | ||
| 158 | |||
| 159 | /*TEST | ||
| 160 | |||
| 161 | test: | ||
| 162 | suffix: 1 | ||
| 163 | args: -pep_tol 1e-6 -pep_ncv 22 | ||
| 164 | filter: sed -e "s/[+-]0\.0*i//g" | ||
| 165 | |||
| 166 | TEST*/ | ||
| 167 |