1 2 static char help[] = "Tests the various routines in MatBAIJ format.\n\ 3 Input arguments are:\n\ 4 -f <input_file> : file to load. For example see $PETSC_DIR/share/petsc/datafiles/matrices\n\n"; 5 6 #include <petscmat.h> 7 8 int main(int argc,char **args) 9 { 10 Mat A,B,C; 11 PetscViewer va,vb,vc; 12 Vec x,y; 13 PetscInt i,j,row,m,n,ncols1,ncols2,ct,m2,n2; 14 const PetscInt *cols1,*cols2; 15 char file[PETSC_MAX_PATH_LEN]; 16 PetscBool tflg; 17 PetscScalar rval; 18 const PetscScalar *vals1,*vals2; 19 PetscReal norm1,norm2,rnorm; 20 PetscRandom r; 21 22 PetscFunctionBeginUser; 23 PetscCall(PetscInitialize(&argc,&args,(char*)0,help)); 24 PetscCall(PetscOptionsGetString(NULL,NULL,"-f",file,sizeof(file),NULL)); 25 26 /* Load the matrix as AIJ format */ 27 PetscCall(PetscViewerBinaryOpen(PETSC_COMM_WORLD,file,FILE_MODE_READ,&va)); 28 PetscCall(MatCreate(PETSC_COMM_WORLD,&A)); 29 PetscCall(MatSetType(A,MATSEQAIJ)); 30 PetscCall(MatLoad(A,va)); 31 PetscCall(PetscViewerDestroy(&va)); 32 33 /* Load the matrix as BAIJ format */ 34 PetscCall(PetscViewerBinaryOpen(PETSC_COMM_WORLD,file,FILE_MODE_READ,&vb)); 35 PetscCall(MatCreate(PETSC_COMM_WORLD,&B)); 36 PetscCall(MatSetType(B,MATSEQBAIJ)); 37 PetscCall(MatLoad(B,vb)); 38 PetscCall(PetscViewerDestroy(&vb)); 39 40 /* Load the matrix as BAIJ format */ 41 PetscCall(PetscViewerBinaryOpen(PETSC_COMM_WORLD,file,FILE_MODE_READ,&vc)); 42 PetscCall(MatCreate(PETSC_COMM_WORLD,&C)); 43 PetscCall(MatSetType(C,MATSEQBAIJ)); 44 PetscCall(MatSetFromOptions(C)); 45 PetscCall(MatLoad(C,vc)); 46 PetscCall(PetscViewerDestroy(&vc)); 47 48 PetscCall(MatGetSize(A,&m,&n)); 49 PetscCall(MatGetSize(B,&m2,&n2)); 50 PetscCheck(m==m2,PETSC_COMM_SELF,PETSC_ERR_ARG_SIZ,"Matrices are of different size. Cannot run this example"); 51 52 /* Test MatEqual() */ 53 PetscCall(MatEqual(B,C,&tflg)); 54 PetscCheck(tflg,PETSC_COMM_SELF,PETSC_ERR_PLIB,"MatEqual() failed"); 55 56 /* Test MatGetDiagonal() */ 57 PetscCall(VecCreateSeq(PETSC_COMM_SELF,m,&x)); 58 PetscCall(VecCreateSeq(PETSC_COMM_SELF,m,&y)); 59 60 PetscCall(MatGetDiagonal(A,x)); 61 PetscCall(MatGetDiagonal(B,y)); 62 63 PetscCall(VecEqual(x,y,&tflg)); 64 PetscCheck(tflg,PETSC_COMM_SELF,PETSC_ERR_PLIB,"MatGetDiagonal() failed"); 65 66 /* Test MatDiagonalScale() */ 67 PetscCall(PetscRandomCreate(PETSC_COMM_SELF,&r)); 68 PetscCall(PetscRandomSetFromOptions(r)); 69 PetscCall(VecSetRandom(x,r)); 70 PetscCall(VecSetRandom(y,r)); 71 72 PetscCall(MatDiagonalScale(A,x,y)); 73 PetscCall(MatDiagonalScale(B,x,y)); 74 PetscCall(MatMult(A,x,y)); 75 PetscCall(VecNorm(y,NORM_2,&norm1)); 76 PetscCall(MatMult(B,x,y)); 77 PetscCall(VecNorm(y,NORM_2,&norm2)); 78 rnorm = ((norm1-norm2)*100)/norm1; 79 PetscCheck(rnorm >= -0.1 && rnorm <= 0.01,PETSC_COMM_SELF,PETSC_ERR_PLIB,"MatDiagonalScale() failed Norm1 %g Norm2 %g",(double)norm1,(double)norm2); 80 81 /* Test MatGetRow()/ MatRestoreRow() */ 82 for (ct=0; ct<100; ct++) { 83 PetscCall(PetscRandomGetValue(r,&rval)); 84 row = (int)(rval*m); 85 PetscCall(MatGetRow(A,row,&ncols1,&cols1,&vals1)); 86 PetscCall(MatGetRow(B,row,&ncols2,&cols2,&vals2)); 87 88 for (i=0,j=0; i<ncols1 && j<ncols2; i++) { 89 while (cols2[j] != cols1[i]) j++; 90 PetscCheck(vals1[i] == vals2[j],PETSC_COMM_SELF,PETSC_ERR_PLIB,"MatGetRow() failed - vals incorrect."); 91 } 92 PetscCheck(i>=ncols1,PETSC_COMM_SELF,PETSC_ERR_PLIB,"MatGetRow() failed - cols incorrect"); 93 94 PetscCall(MatRestoreRow(A,row,&ncols1,&cols1,&vals1)); 95 PetscCall(MatRestoreRow(B,row,&ncols2,&cols2,&vals2)); 96 } 97 98 PetscCall(MatDestroy(&A)); 99 PetscCall(MatDestroy(&B)); 100 PetscCall(MatDestroy(&C)); 101 PetscCall(VecDestroy(&x)); 102 PetscCall(VecDestroy(&y)); 103 PetscCall(PetscRandomDestroy(&r)); 104 PetscCall(PetscFinalize()); 105 return 0; 106 } 107 108 /*TEST 109 110 build: 111 requires: !complex 112 113 test: 114 args: -f ${DATAFILESPATH}/matrices/cfd.1.10 -mat_block_size 5 115 requires: !complex double datafilespath !defined(PETSC_USE_64BIT_INDICES) 116 117 TEST*/ 118