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*9566063dSJacob Faibussowitsch PetscCall(PetscInitialize(&argc,&argv,(char*)0,help)); 18c4762a1bSJed Brown /* Create viewers */ 19*9566063dSJacob Faibussowitsch PetscCall(PetscViewerDrawOpen(PETSC_COMM_WORLD,0,"",PETSC_DECIDE,PETSC_DECIDE,600,200,&viewer)); 20*9566063dSJacob Faibussowitsch PetscCall(PetscViewerDrawGetDraw(viewer,0,&draw)); 21*9566063dSJacob Faibussowitsch PetscCall(PetscDrawSetDoubleBuffer(draw)); 22c4762a1bSJed Brown 23c4762a1bSJed Brown /* Read options */ 24*9566063dSJacob Faibussowitsch PetscCall(PetscOptionsGetInt(NULL,NULL,"-M",&M,NULL)); 25*9566063dSJacob Faibussowitsch PetscCall(PetscOptionsGetInt(NULL,NULL,"-N",&N,NULL)); 26*9566063dSJacob Faibussowitsch PetscCall(PetscOptionsGetInt(NULL,NULL,"-dof",&dof,NULL)); 27*9566063dSJacob Faibussowitsch PetscCall(PetscOptionsGetInt(NULL,NULL,"-s",&s,NULL)); 28*9566063dSJacob Faibussowitsch PetscCall(PetscOptionsGetInt(NULL,NULL,"-periodic_x",&wrap,NULL)); 29*9566063dSJacob Faibussowitsch PetscCall(PetscOptionsGetInt(NULL,NULL,"-periodic_y",&wrap,NULL)); 30c4762a1bSJed Brown 31c4762a1bSJed Brown /* Create distributed array and get vectors */ 32*9566063dSJacob Faibussowitsch PetscCall(DMDACreate2d(PETSC_COMM_WORLD,(DMBoundaryType)bx,(DMBoundaryType)by,DMDA_STENCIL_BOX,M,N,PETSC_DECIDE,PETSC_DECIDE,dof,s,NULL,NULL,&da)); 33*9566063dSJacob Faibussowitsch PetscCall(DMSetFromOptions(da)); 34*9566063dSJacob Faibussowitsch PetscCall(DMSetUp(da)); 35*9566063dSJacob Faibussowitsch PetscCall(DMDASetUniformCoordinates(da,0.0,1.0,0.0,1.0,0.0,0.0)); 36c4762a1bSJed Brown for (i=0; i<dof; i++) { 37c4762a1bSJed Brown sprintf(fname,"Field %d",(int)i); 38*9566063dSJacob Faibussowitsch PetscCall(DMDASetFieldName(da,i,fname)); 39c4762a1bSJed Brown } 40c4762a1bSJed Brown 41*9566063dSJacob Faibussowitsch PetscCall(DMView(da,viewer)); 42*9566063dSJacob Faibussowitsch PetscCall(DMCreateGlobalVector(da,&global)); 43*9566063dSJacob Faibussowitsch PetscCall(DMCreateLocalVector(da,&local)); 44*9566063dSJacob Faibussowitsch PetscCall(DMGetCoordinates(da,&coors)); 45*9566063dSJacob Faibussowitsch PetscCall(DMGetCoordinateDM(da,&dac)); 46c4762a1bSJed Brown 47c4762a1bSJed Brown /* Set values into global vectors */ 48*9566063dSJacob Faibussowitsch PetscCall(DMDAVecGetArrayDOFRead(dac,coors,&xy)); 49*9566063dSJacob Faibussowitsch PetscCall(DMDAVecGetArrayDOF(da,global,&aglobal)); 50*9566063dSJacob Faibussowitsch PetscCall(DMDAGetCorners(da,&xs,&ys,0,&m,&n,0)); 51c4762a1bSJed Brown for (k=0; k<dof; k++) { 52c4762a1bSJed Brown for (j=ys; j<ys+n; j++) { 53c4762a1bSJed Brown for (i=xs; i<xs+m; i++) { 54c4762a1bSJed Brown aglobal[j][i][k] = PetscSinScalar(2.0*PETSC_PI*(k+1)*xy[j][i][0]); 55c4762a1bSJed Brown } 56c4762a1bSJed Brown } 57c4762a1bSJed Brown } 58*9566063dSJacob Faibussowitsch PetscCall(DMDAVecRestoreArrayDOF(da,global,&aglobal)); 59*9566063dSJacob Faibussowitsch PetscCall(DMDAVecRestoreArrayDOFRead(dac,coors,&xy)); 60*9566063dSJacob Faibussowitsch PetscCall(DMGlobalToLocalBegin(da,global,INSERT_VALUES,local)); 61*9566063dSJacob Faibussowitsch PetscCall(DMGlobalToLocalEnd(da,global,INSERT_VALUES,local)); 62c4762a1bSJed Brown 63*9566063dSJacob Faibussowitsch PetscCall(VecSet(global,0.0)); 64*9566063dSJacob Faibussowitsch PetscCall(DMLocalToGlobalBegin(da,local,INSERT_VALUES,global)); 65*9566063dSJacob Faibussowitsch PetscCall(DMLocalToGlobalEnd(da,local,INSERT_VALUES,global)); 66*9566063dSJacob Faibussowitsch PetscCall(VecView(global,PETSC_VIEWER_STDOUT_WORLD)); 67*9566063dSJacob Faibussowitsch PetscCall(VecView(global,viewer)); 68c4762a1bSJed Brown 69c4762a1bSJed Brown /* Free memory */ 70*9566063dSJacob Faibussowitsch PetscCall(PetscViewerDestroy(&viewer)); 71*9566063dSJacob Faibussowitsch PetscCall(VecDestroy(&global)); 72*9566063dSJacob Faibussowitsch PetscCall(VecDestroy(&local)); 73*9566063dSJacob Faibussowitsch PetscCall(DMDestroy(&da)); 74*9566063dSJacob Faibussowitsch PetscCall(PetscFinalize()); 75b122ec5aSJacob Faibussowitsch return 0; 76c4762a1bSJed Brown } 77c4762a1bSJed Brown 78c4762a1bSJed Brown /*TEST 79c4762a1bSJed Brown 80c4762a1bSJed Brown test: 81c4762a1bSJed Brown args: -dof 2 82c4762a1bSJed Brown filter: grep -v -i Object 83c4762a1bSJed Brown requires: x 84c4762a1bSJed Brown 85c4762a1bSJed Brown test: 86c4762a1bSJed Brown suffix: 2 87c4762a1bSJed Brown nsize: 2 88c4762a1bSJed Brown args: -dof 2 89c4762a1bSJed Brown filter: grep -v -i Object 90c4762a1bSJed Brown requires: x 91c4762a1bSJed Brown 92c4762a1bSJed Brown test: 93c4762a1bSJed Brown suffix: 3 94c4762a1bSJed Brown nsize: 3 95c4762a1bSJed Brown args: -dof 2 96c4762a1bSJed Brown filter: grep -v -i Object 97c4762a1bSJed Brown requires: x 98c4762a1bSJed Brown 99c4762a1bSJed Brown TEST*/ 100