1c4762a1bSJed Brown 2c4762a1bSJed Brown static char help[] = "Tests various 2-dimensional DMDA routines.\n\n"; 3c4762a1bSJed Brown 4c4762a1bSJed Brown #include <petscdmda.h> 5c4762a1bSJed Brown #include <petscdraw.h> 6c4762a1bSJed Brown 7c4762a1bSJed Brown int main(int argc,char **argv) 8c4762a1bSJed Brown { 9c4762a1bSJed Brown PetscInt M = 10,N = 8,dof=1,s=1,bx=0,by=0,i,n,j,k,m,wrap,xs,ys; 10c4762a1bSJed Brown DM da,dac; 11c4762a1bSJed Brown PetscViewer viewer; 12c4762a1bSJed Brown Vec local,global,coors; 13c4762a1bSJed Brown PetscScalar ***xy,***aglobal; 14c4762a1bSJed Brown PetscDraw draw; 15c4762a1bSJed Brown char fname[32]; 16c4762a1bSJed Brown 17*327415f7SBarry Smith PetscFunctionBeginUser; 189566063dSJacob Faibussowitsch PetscCall(PetscInitialize(&argc,&argv,(char*)0,help)); 19c4762a1bSJed Brown /* Create viewers */ 209566063dSJacob Faibussowitsch PetscCall(PetscViewerDrawOpen(PETSC_COMM_WORLD,0,"",PETSC_DECIDE,PETSC_DECIDE,600,200,&viewer)); 219566063dSJacob Faibussowitsch PetscCall(PetscViewerDrawGetDraw(viewer,0,&draw)); 229566063dSJacob Faibussowitsch PetscCall(PetscDrawSetDoubleBuffer(draw)); 23c4762a1bSJed Brown 24c4762a1bSJed Brown /* Read options */ 259566063dSJacob Faibussowitsch PetscCall(PetscOptionsGetInt(NULL,NULL,"-M",&M,NULL)); 269566063dSJacob Faibussowitsch PetscCall(PetscOptionsGetInt(NULL,NULL,"-N",&N,NULL)); 279566063dSJacob Faibussowitsch PetscCall(PetscOptionsGetInt(NULL,NULL,"-dof",&dof,NULL)); 289566063dSJacob Faibussowitsch PetscCall(PetscOptionsGetInt(NULL,NULL,"-s",&s,NULL)); 299566063dSJacob Faibussowitsch PetscCall(PetscOptionsGetInt(NULL,NULL,"-periodic_x",&wrap,NULL)); 309566063dSJacob Faibussowitsch PetscCall(PetscOptionsGetInt(NULL,NULL,"-periodic_y",&wrap,NULL)); 31c4762a1bSJed Brown 32c4762a1bSJed Brown /* Create distributed array and get vectors */ 339566063dSJacob Faibussowitsch PetscCall(DMDACreate2d(PETSC_COMM_WORLD,(DMBoundaryType)bx,(DMBoundaryType)by,DMDA_STENCIL_BOX,M,N,PETSC_DECIDE,PETSC_DECIDE,dof,s,NULL,NULL,&da)); 349566063dSJacob Faibussowitsch PetscCall(DMSetFromOptions(da)); 359566063dSJacob Faibussowitsch PetscCall(DMSetUp(da)); 369566063dSJacob Faibussowitsch PetscCall(DMDASetUniformCoordinates(da,0.0,1.0,0.0,1.0,0.0,0.0)); 37c4762a1bSJed Brown for (i=0; i<dof; i++) { 38c4762a1bSJed Brown sprintf(fname,"Field %d",(int)i); 399566063dSJacob Faibussowitsch PetscCall(DMDASetFieldName(da,i,fname)); 40c4762a1bSJed Brown } 41c4762a1bSJed Brown 429566063dSJacob Faibussowitsch PetscCall(DMView(da,viewer)); 439566063dSJacob Faibussowitsch PetscCall(DMCreateGlobalVector(da,&global)); 449566063dSJacob Faibussowitsch PetscCall(DMCreateLocalVector(da,&local)); 459566063dSJacob Faibussowitsch PetscCall(DMGetCoordinates(da,&coors)); 469566063dSJacob Faibussowitsch PetscCall(DMGetCoordinateDM(da,&dac)); 47c4762a1bSJed Brown 48c4762a1bSJed Brown /* Set values into global vectors */ 499566063dSJacob Faibussowitsch PetscCall(DMDAVecGetArrayDOFRead(dac,coors,&xy)); 509566063dSJacob Faibussowitsch PetscCall(DMDAVecGetArrayDOF(da,global,&aglobal)); 519566063dSJacob Faibussowitsch PetscCall(DMDAGetCorners(da,&xs,&ys,0,&m,&n,0)); 52c4762a1bSJed Brown for (k=0; k<dof; k++) { 53c4762a1bSJed Brown for (j=ys; j<ys+n; j++) { 54c4762a1bSJed Brown for (i=xs; i<xs+m; i++) { 55c4762a1bSJed Brown aglobal[j][i][k] = PetscSinScalar(2.0*PETSC_PI*(k+1)*xy[j][i][0]); 56c4762a1bSJed Brown } 57c4762a1bSJed Brown } 58c4762a1bSJed Brown } 599566063dSJacob Faibussowitsch PetscCall(DMDAVecRestoreArrayDOF(da,global,&aglobal)); 609566063dSJacob Faibussowitsch PetscCall(DMDAVecRestoreArrayDOFRead(dac,coors,&xy)); 619566063dSJacob Faibussowitsch PetscCall(DMGlobalToLocalBegin(da,global,INSERT_VALUES,local)); 629566063dSJacob Faibussowitsch PetscCall(DMGlobalToLocalEnd(da,global,INSERT_VALUES,local)); 63c4762a1bSJed Brown 649566063dSJacob Faibussowitsch PetscCall(VecSet(global,0.0)); 659566063dSJacob Faibussowitsch PetscCall(DMLocalToGlobalBegin(da,local,INSERT_VALUES,global)); 669566063dSJacob Faibussowitsch PetscCall(DMLocalToGlobalEnd(da,local,INSERT_VALUES,global)); 679566063dSJacob Faibussowitsch PetscCall(VecView(global,PETSC_VIEWER_STDOUT_WORLD)); 689566063dSJacob Faibussowitsch PetscCall(VecView(global,viewer)); 69c4762a1bSJed Brown 70c4762a1bSJed Brown /* Free memory */ 719566063dSJacob Faibussowitsch PetscCall(PetscViewerDestroy(&viewer)); 729566063dSJacob Faibussowitsch PetscCall(VecDestroy(&global)); 739566063dSJacob Faibussowitsch PetscCall(VecDestroy(&local)); 749566063dSJacob Faibussowitsch PetscCall(DMDestroy(&da)); 759566063dSJacob Faibussowitsch PetscCall(PetscFinalize()); 76b122ec5aSJacob Faibussowitsch return 0; 77c4762a1bSJed Brown } 78c4762a1bSJed Brown 79c4762a1bSJed Brown /*TEST 80c4762a1bSJed Brown 81c4762a1bSJed Brown test: 82c4762a1bSJed Brown args: -dof 2 83c4762a1bSJed Brown filter: grep -v -i Object 84c4762a1bSJed Brown requires: x 85c4762a1bSJed Brown 86c4762a1bSJed Brown test: 87c4762a1bSJed Brown suffix: 2 88c4762a1bSJed Brown nsize: 2 89c4762a1bSJed Brown args: -dof 2 90c4762a1bSJed Brown filter: grep -v -i Object 91c4762a1bSJed Brown requires: x 92c4762a1bSJed Brown 93c4762a1bSJed Brown test: 94c4762a1bSJed Brown suffix: 3 95c4762a1bSJed Brown nsize: 3 96c4762a1bSJed Brown args: -dof 2 97c4762a1bSJed Brown filter: grep -v -i Object 98c4762a1bSJed Brown requires: x 99c4762a1bSJed Brown 100c4762a1bSJed Brown TEST*/ 101