1 2 static char help[] = "Tests MatIncreaseOverlap(), MatCreateSubMatrices() for MatBAIJ format.\n"; 3 4 #include <petscmat.h> 5 6 int main(int argc,char **args) 7 { 8 Mat A,B,*submatA,*submatB; 9 PetscInt bs=1,m=43,ov=1,i,j,k,*rows,*cols,M,nd=5,*idx,mm,nn,lsize; 10 PetscScalar *vals,rval; 11 IS *is1,*is2; 12 PetscRandom rdm; 13 Vec xx,s1,s2; 14 PetscReal s1norm,s2norm,rnorm,tol = PETSC_SQRT_MACHINE_EPSILON; 15 PetscBool flg; 16 17 PetscCall(PetscInitialize(&argc,&args,(char*)0,help)); 18 PetscCall(PetscOptionsGetInt(NULL,NULL,"-mat_block_size",&bs,NULL)); 19 PetscCall(PetscOptionsGetInt(NULL,NULL,"-mat_size",&m,NULL)); 20 PetscCall(PetscOptionsGetInt(NULL,NULL,"-ov",&ov,NULL)); 21 PetscCall(PetscOptionsGetInt(NULL,NULL,"-nd",&nd,NULL)); 22 M = m*bs; 23 24 PetscCall(MatCreateSeqBAIJ(PETSC_COMM_SELF,bs,M,M,1,NULL,&A)); 25 PetscCall(MatSetOption(A,MAT_NEW_NONZERO_ALLOCATION_ERR,PETSC_FALSE)); 26 PetscCall(MatCreateSeqAIJ(PETSC_COMM_SELF,M,M,15,NULL,&B)); 27 PetscCall(MatSetOption(B,MAT_NEW_NONZERO_ALLOCATION_ERR,PETSC_FALSE)); 28 PetscCall(PetscRandomCreate(PETSC_COMM_SELF,&rdm)); 29 PetscCall(PetscRandomSetFromOptions(rdm)); 30 31 PetscCall(PetscMalloc1(bs,&rows)); 32 PetscCall(PetscMalloc1(bs,&cols)); 33 PetscCall(PetscMalloc1(bs*bs,&vals)); 34 PetscCall(PetscMalloc1(M,&idx)); 35 36 /* Now set blocks of values */ 37 for (i=0; i<20*bs; i++) { 38 PetscCall(PetscRandomGetValue(rdm,&rval)); 39 cols[0] = bs*(int)(PetscRealPart(rval)*m); 40 PetscCall(PetscRandomGetValue(rdm,&rval)); 41 rows[0] = bs*(int)(PetscRealPart(rval)*m); 42 for (j=1; j<bs; j++) { 43 rows[j] = rows[j-1]+1; 44 cols[j] = cols[j-1]+1; 45 } 46 47 for (j=0; j<bs*bs; j++) { 48 PetscCall(PetscRandomGetValue(rdm,&rval)); 49 vals[j] = rval; 50 } 51 PetscCall(MatSetValues(A,bs,rows,bs,cols,vals,ADD_VALUES)); 52 PetscCall(MatSetValues(B,bs,rows,bs,cols,vals,ADD_VALUES)); 53 } 54 55 PetscCall(MatAssemblyBegin(A,MAT_FINAL_ASSEMBLY)); 56 PetscCall(MatAssemblyEnd(A,MAT_FINAL_ASSEMBLY)); 57 PetscCall(MatAssemblyBegin(B,MAT_FINAL_ASSEMBLY)); 58 PetscCall(MatAssemblyEnd(B,MAT_FINAL_ASSEMBLY)); 59 60 /* Test MatIncreaseOverlap() */ 61 PetscCall(PetscMalloc1(nd,&is1)); 62 PetscCall(PetscMalloc1(nd,&is2)); 63 64 for (i=0; i<nd; i++) { 65 PetscCall(PetscRandomGetValue(rdm,&rval)); 66 lsize = (int)(PetscRealPart(rval)*m); 67 for (j=0; j<lsize; j++) { 68 PetscCall(PetscRandomGetValue(rdm,&rval)); 69 idx[j*bs] = bs*(int)(PetscRealPart(rval)*m); 70 for (k=1; k<bs; k++) idx[j*bs+k] = idx[j*bs]+k; 71 } 72 PetscCall(ISCreateGeneral(PETSC_COMM_SELF,lsize*bs,idx,PETSC_COPY_VALUES,is1+i)); 73 PetscCall(ISCreateGeneral(PETSC_COMM_SELF,lsize*bs,idx,PETSC_COPY_VALUES,is2+i)); 74 } 75 PetscCall(MatIncreaseOverlap(A,nd,is1,ov)); 76 PetscCall(MatIncreaseOverlap(B,nd,is2,ov)); 77 78 for (i=0; i<nd; ++i) { 79 PetscCall(ISEqual(is1[i],is2[i],&flg)); 80 PetscCheck(flg,PETSC_COMM_SELF,PETSC_ERR_PLIB,"i=%" PetscInt_FMT ", flg =%d",i,(int)flg); 81 } 82 83 for (i=0; i<nd; ++i) { 84 PetscCall(ISSort(is1[i])); 85 PetscCall(ISSort(is2[i])); 86 } 87 88 PetscCall(MatCreateSubMatrices(A,nd,is1,is1,MAT_INITIAL_MATRIX,&submatA)); 89 PetscCall(MatCreateSubMatrices(B,nd,is2,is2,MAT_INITIAL_MATRIX,&submatB)); 90 91 /* Test MatMult() */ 92 for (i=0; i<nd; i++) { 93 PetscCall(MatGetSize(submatA[i],&mm,&nn)); 94 PetscCall(VecCreateSeq(PETSC_COMM_SELF,mm,&xx)); 95 PetscCall(VecDuplicate(xx,&s1)); 96 PetscCall(VecDuplicate(xx,&s2)); 97 for (j=0; j<3; j++) { 98 PetscCall(VecSetRandom(xx,rdm)); 99 PetscCall(MatMult(submatA[i],xx,s1)); 100 PetscCall(MatMult(submatB[i],xx,s2)); 101 PetscCall(VecNorm(s1,NORM_2,&s1norm)); 102 PetscCall(VecNorm(s2,NORM_2,&s2norm)); 103 rnorm = s2norm-s1norm; 104 if (rnorm<-tol || rnorm>tol) { 105 PetscCall(PetscPrintf(PETSC_COMM_SELF,"Error:MatMult - Norm1=%16.14e Norm2=%16.14e\n",(double)s1norm,(double)s2norm)); 106 } 107 } 108 PetscCall(VecDestroy(&xx)); 109 PetscCall(VecDestroy(&s1)); 110 PetscCall(VecDestroy(&s2)); 111 } 112 /* Now test MatCreateSubmatrices with MAT_REUSE_MATRIX option */ 113 PetscCall(MatCreateSubMatrices(A,nd,is1,is1,MAT_REUSE_MATRIX,&submatA)); 114 PetscCall(MatCreateSubMatrices(B,nd,is2,is2,MAT_REUSE_MATRIX,&submatB)); 115 116 /* Test MatMult() */ 117 for (i=0; i<nd; i++) { 118 PetscCall(MatGetSize(submatA[i],&mm,&nn)); 119 PetscCall(VecCreateSeq(PETSC_COMM_SELF,mm,&xx)); 120 PetscCall(VecDuplicate(xx,&s1)); 121 PetscCall(VecDuplicate(xx,&s2)); 122 for (j=0; j<3; j++) { 123 PetscCall(VecSetRandom(xx,rdm)); 124 PetscCall(MatMult(submatA[i],xx,s1)); 125 PetscCall(MatMult(submatB[i],xx,s2)); 126 PetscCall(VecNorm(s1,NORM_2,&s1norm)); 127 PetscCall(VecNorm(s2,NORM_2,&s2norm)); 128 rnorm = s2norm-s1norm; 129 if (rnorm<-tol || rnorm>tol) { 130 PetscCall(PetscPrintf(PETSC_COMM_SELF,"Error:MatMult - Norm1=%16.14e Norm2=%16.14e\n",(double)s1norm,(double)s2norm)); 131 } 132 } 133 PetscCall(VecDestroy(&xx)); 134 PetscCall(VecDestroy(&s1)); 135 PetscCall(VecDestroy(&s2)); 136 } 137 138 /* Free allocated memory */ 139 for (i=0; i<nd; ++i) { 140 PetscCall(ISDestroy(&is1[i])); 141 PetscCall(ISDestroy(&is2[i])); 142 } 143 PetscCall(MatDestroySubMatrices(nd,&submatA)); 144 PetscCall(MatDestroySubMatrices(nd,&submatB)); 145 PetscCall(PetscFree(is1)); 146 PetscCall(PetscFree(is2)); 147 PetscCall(PetscFree(idx)); 148 PetscCall(PetscFree(rows)); 149 PetscCall(PetscFree(cols)); 150 PetscCall(PetscFree(vals)); 151 PetscCall(MatDestroy(&A)); 152 PetscCall(MatDestroy(&B)); 153 PetscCall(PetscRandomDestroy(&rdm)); 154 PetscCall(PetscFinalize()); 155 return 0; 156 } 157 158 /*TEST 159 160 test: 161 args: -mat_block_size {{1 2 5 7 8}} -ov {{1 3}} -mat_size {{11 13}} -nd {{7}} 162 163 TEST*/ 164