1c4762a1bSJed Brown 2c4762a1bSJed Brown static char help[] = "Tests copying and ordering uniprocessor row-based sparse matrices.\n\n"; 3c4762a1bSJed Brown 4c4762a1bSJed Brown #include <petscmat.h> 5c4762a1bSJed Brown 6c4762a1bSJed Brown int main(int argc,char **args) 7c4762a1bSJed Brown { 8c4762a1bSJed Brown Mat C,A; 9c4762a1bSJed Brown PetscInt i,j,m = 5,n = 5,Ii,J; 10c4762a1bSJed Brown PetscScalar v; 11c4762a1bSJed Brown IS perm,iperm; 12c4762a1bSJed Brown 139566063dSJacob Faibussowitsch PetscCall(PetscInitialize(&argc,&args,(char*)0,help)); 149566063dSJacob Faibussowitsch PetscCall(MatCreateSeqAIJ(PETSC_COMM_SELF,m*n,m*n,5,NULL,&C)); 15c4762a1bSJed Brown /* create the matrix for the five point stencil, YET AGAIN*/ 16c4762a1bSJed Brown for (i=0; i<m; i++) { 17c4762a1bSJed Brown for (j=0; j<n; j++) { 18c4762a1bSJed Brown v = -1.0; Ii = j + n*i; 199566063dSJacob Faibussowitsch if (i>0) {J = Ii - n; PetscCall(MatSetValues(C,1,&Ii,1,&J,&v,INSERT_VALUES));} 209566063dSJacob Faibussowitsch if (i<m-1) {J = Ii + n; PetscCall(MatSetValues(C,1,&Ii,1,&J,&v,INSERT_VALUES));} 219566063dSJacob Faibussowitsch if (j>0) {J = Ii - 1; PetscCall(MatSetValues(C,1,&Ii,1,&J,&v,INSERT_VALUES));} 229566063dSJacob Faibussowitsch if (j<n-1) {J = Ii + 1; PetscCall(MatSetValues(C,1,&Ii,1,&J,&v,INSERT_VALUES));} 239566063dSJacob Faibussowitsch v = 4.0; PetscCall(MatSetValues(C,1,&Ii,1,&Ii,&v,INSERT_VALUES)); 24c4762a1bSJed Brown } 25c4762a1bSJed Brown } 269566063dSJacob Faibussowitsch PetscCall(MatAssemblyBegin(C,MAT_FINAL_ASSEMBLY)); 279566063dSJacob Faibussowitsch PetscCall(MatAssemblyEnd(C,MAT_FINAL_ASSEMBLY)); 28c4762a1bSJed Brown 299566063dSJacob Faibussowitsch PetscCall(MatConvert(C,MATSAME,MAT_INITIAL_MATRIX,&A)); 30c4762a1bSJed Brown 319566063dSJacob Faibussowitsch PetscCall(MatGetOrdering(A,MATORDERINGND,&perm,&iperm)); 329566063dSJacob Faibussowitsch PetscCall(ISView(perm,PETSC_VIEWER_STDOUT_SELF)); 339566063dSJacob Faibussowitsch PetscCall(ISView(iperm,PETSC_VIEWER_STDOUT_SELF)); 349566063dSJacob Faibussowitsch PetscCall(MatView(A,PETSC_VIEWER_STDOUT_SELF)); 35c4762a1bSJed Brown 369566063dSJacob Faibussowitsch PetscCall(ISDestroy(&perm)); 379566063dSJacob Faibussowitsch PetscCall(ISDestroy(&iperm)); 389566063dSJacob Faibussowitsch PetscCall(MatDestroy(&C)); 399566063dSJacob Faibussowitsch PetscCall(MatDestroy(&A)); 409566063dSJacob Faibussowitsch PetscCall(PetscFinalize()); 41b122ec5aSJacob Faibussowitsch return 0; 42c4762a1bSJed Brown } 43c4762a1bSJed Brown 44c4762a1bSJed Brown /*TEST 45c4762a1bSJed Brown 46c4762a1bSJed Brown test: 47*8cc725e6SPierre Jolivet filter: grep -v " MPI process" 48c4762a1bSJed Brown 49c4762a1bSJed Brown TEST*/ 50