1c4762a1bSJed Brown static char help[] = "Tests MatPermute() for a square matrix in parallel.\n\n"; 2c4762a1bSJed Brown #include <petscmat.h> 3c4762a1bSJed Brown /* Results: 4c4762a1bSJed Brown Sequential: 5c4762a1bSJed Brown - seqaij: correct permutation 6c4762a1bSJed Brown - seqbaij: permutation not supported for this MATTYPE 7c4762a1bSJed Brown - seqsbaij: permutation not supported for this MATTYPE 8c4762a1bSJed Brown Parallel: 9c4762a1bSJed Brown - mpiaij: incorrect permutation (disable this op for now) 10c4762a1bSJed Brown - seqbaij: correct permutation, but all manner of memory leaks 11c4762a1bSJed Brown (disable this op for now, because it appears broken for nonsquare matrices; see ex151) 12c4762a1bSJed Brown - seqsbaij: permutation not supported for this MATTYPE 13c4762a1bSJed Brown 14c4762a1bSJed Brown */ 15c4762a1bSJed Brown int main(int argc,char **argv) 16c4762a1bSJed Brown { 17c4762a1bSJed Brown const struct {PetscInt i,j; PetscScalar v;} entries[] = {{0,3,1.},{1,2,2.},{2,1,3.},{2,4,4.},{3,0,5.},{3,3,6.},{4,1,7.},{4,4,8.}}; 18c4762a1bSJed Brown const PetscInt ixrow[5] = {4,2,1,3,0},ixcol[5] = {3,2,1,4,0}; 19c4762a1bSJed Brown Mat A,B; 20c4762a1bSJed Brown PetscErrorCode ierr; 21c4762a1bSJed Brown PetscInt i,rstart,rend,cstart,cend; 22c4762a1bSJed Brown IS isrow,iscol; 23c4762a1bSJed Brown PetscViewer viewer,sviewer; 24c4762a1bSJed Brown PetscBool view_sparse; 25c4762a1bSJed Brown 26c4762a1bSJed Brown ierr = PetscInitialize(&argc,&argv,(char*)0,help);if (ierr) return ierr; 27c4762a1bSJed Brown /* ------- Assemble matrix, --------- */ 28*5f80ce2aSJacob Faibussowitsch CHKERRQ(MatCreate(PETSC_COMM_WORLD,&A)); 29*5f80ce2aSJacob Faibussowitsch CHKERRQ(MatSetSizes(A,PETSC_DECIDE,PETSC_DECIDE,5,5)); 30*5f80ce2aSJacob Faibussowitsch CHKERRQ(MatSetFromOptions(A)); 31*5f80ce2aSJacob Faibussowitsch CHKERRQ(MatSetUp(A)); 32*5f80ce2aSJacob Faibussowitsch CHKERRQ(MatGetOwnershipRange(A,&rstart,&rend)); 33*5f80ce2aSJacob Faibussowitsch CHKERRQ(MatGetOwnershipRangeColumn(A,&cstart,&cend)); 34c4762a1bSJed Brown 35c4762a1bSJed Brown for (i=0; i<(PetscInt)(sizeof(entries)/sizeof(entries[0])); i++) { 36*5f80ce2aSJacob Faibussowitsch CHKERRQ(MatSetValue(A,entries[i].i,entries[i].j,entries[i].v,INSERT_VALUES)); 37c4762a1bSJed Brown } 38*5f80ce2aSJacob Faibussowitsch CHKERRQ(MatAssemblyBegin(A,MAT_FINAL_ASSEMBLY)); 39*5f80ce2aSJacob Faibussowitsch CHKERRQ(MatAssemblyEnd(A,MAT_FINAL_ASSEMBLY)); 40c4762a1bSJed Brown 41c4762a1bSJed Brown /* ------ Prepare index sets ------ */ 42*5f80ce2aSJacob Faibussowitsch CHKERRQ(ISCreateGeneral(PETSC_COMM_WORLD,rend-rstart,ixrow+rstart,PETSC_USE_POINTER,&isrow)); 43*5f80ce2aSJacob Faibussowitsch CHKERRQ(ISCreateGeneral(PETSC_COMM_SELF,5,ixcol,PETSC_USE_POINTER,&iscol)); 44*5f80ce2aSJacob Faibussowitsch CHKERRQ(ISSetPermutation(isrow)); 45*5f80ce2aSJacob Faibussowitsch CHKERRQ(ISSetPermutation(iscol)); 46c4762a1bSJed Brown 47*5f80ce2aSJacob Faibussowitsch CHKERRQ(PetscViewerASCIIGetStdout(PETSC_COMM_WORLD,&viewer)); 48c4762a1bSJed Brown view_sparse = PETSC_FALSE; 49*5f80ce2aSJacob Faibussowitsch CHKERRQ(PetscOptionsGetBool(NULL,NULL, "-view_sparse", &view_sparse, NULL)); 50c4762a1bSJed Brown if (!view_sparse) { 51*5f80ce2aSJacob Faibussowitsch CHKERRQ(PetscViewerPushFormat(viewer,PETSC_VIEWER_ASCII_DENSE)); 52c4762a1bSJed Brown } 53*5f80ce2aSJacob Faibussowitsch CHKERRQ(PetscViewerASCIIPrintf(viewer,"Original matrix\n")); 54*5f80ce2aSJacob Faibussowitsch CHKERRQ(MatView(A,viewer)); 55c4762a1bSJed Brown 56*5f80ce2aSJacob Faibussowitsch CHKERRQ(MatPermute(A,isrow,iscol,&B)); 57*5f80ce2aSJacob Faibussowitsch CHKERRQ(PetscViewerASCIIPrintf(viewer,"Permuted matrix\n")); 58*5f80ce2aSJacob Faibussowitsch CHKERRQ(MatView(B,viewer)); 59c4762a1bSJed Brown if (!view_sparse) { 60*5f80ce2aSJacob Faibussowitsch CHKERRQ(PetscViewerPopFormat(viewer)); 61c4762a1bSJed Brown } 62c4762a1bSJed Brown 63*5f80ce2aSJacob Faibussowitsch CHKERRQ(PetscViewerASCIIPrintf(viewer,"Row permutation\n")); 64*5f80ce2aSJacob Faibussowitsch CHKERRQ(ISView(isrow,viewer)); 65*5f80ce2aSJacob Faibussowitsch CHKERRQ(PetscViewerASCIIPrintf(viewer,"Column permutation\n")); 66*5f80ce2aSJacob Faibussowitsch CHKERRQ(PetscViewerGetSubViewer(viewer,PETSC_COMM_SELF,&sviewer)); 67*5f80ce2aSJacob Faibussowitsch CHKERRQ(ISView(iscol,sviewer)); 68*5f80ce2aSJacob Faibussowitsch CHKERRQ(PetscViewerRestoreSubViewer(viewer,PETSC_COMM_SELF,&sviewer)); 69c4762a1bSJed Brown 70c4762a1bSJed Brown /* Free data structures */ 71*5f80ce2aSJacob Faibussowitsch CHKERRQ(ISDestroy(&isrow)); 72*5f80ce2aSJacob Faibussowitsch CHKERRQ(ISDestroy(&iscol)); 73*5f80ce2aSJacob Faibussowitsch CHKERRQ(MatDestroy(&A)); 74*5f80ce2aSJacob Faibussowitsch CHKERRQ(MatDestroy(&B)); 75c4762a1bSJed Brown 76c4762a1bSJed Brown ierr = PetscFinalize(); 77c4762a1bSJed Brown return ierr; 78c4762a1bSJed Brown } 79