1 2 /* 3 Code for manipulating distributed regular arrays in parallel. 4 */ 5 6 #include <private/daimpl.h> /*I "petscdmda.h" I*/ 7 8 #if defined(PETSC_HAVE_MATLAB_ENGINE) 9 #include <mat.h> /* MATLAB include file */ 10 11 #undef __FUNCT__ 12 #define __FUNCT__ "DMView_DA_Matlab" 13 PetscErrorCode DMView_DA_Matlab(DM da,PetscViewer viewer) 14 { 15 PetscErrorCode ierr; 16 PetscMPIInt rank; 17 PetscInt dim,m,n,p,dof,swidth; 18 DMDAStencilType stencil; 19 DMDABoundaryType bx,by,bz; 20 mxArray *mx; 21 const char *fnames[] = {"dimension","m","n","p","dof","stencil_width","bx","by","bz","stencil_type"}; 22 23 PetscFunctionBegin; 24 ierr = MPI_Comm_rank(((PetscObject)da)->comm,&rank);CHKERRQ(ierr); 25 if (!rank) { 26 ierr = DMDAGetInfo(da,&dim,&m,&n,&p,0,0,0,&dof,&swidth,&bx,&by,&bz,&stencil);CHKERRQ(ierr); 27 mx = mxCreateStructMatrix(1,1,8,(const char **)fnames); 28 if (!mx) SETERRQ(PETSC_COMM_SELF,PETSC_ERR_LIB,"Unable to generate MATLAB struct array to hold DMDA informations"); 29 mxSetFieldByNumber(mx,0,0,mxCreateDoubleScalar((double)dim)); 30 mxSetFieldByNumber(mx,0,1,mxCreateDoubleScalar((double)m)); 31 mxSetFieldByNumber(mx,0,2,mxCreateDoubleScalar((double)n)); 32 mxSetFieldByNumber(mx,0,3,mxCreateDoubleScalar((double)p)); 33 mxSetFieldByNumber(mx,0,4,mxCreateDoubleScalar((double)dof)); 34 mxSetFieldByNumber(mx,0,5,mxCreateDoubleScalar((double)swidth)); 35 mxSetFieldByNumber(mx,0,6,mxCreateDoubleScalar((double)bx)); 36 mxSetFieldByNumber(mx,0,7,mxCreateDoubleScalar((double)by)); 37 mxSetFieldByNumber(mx,0,8,mxCreateDoubleScalar((double)bz)); 38 mxSetFieldByNumber(mx,0,9,mxCreateDoubleScalar((double)stencil)); 39 ierr = PetscObjectName((PetscObject)da);CHKERRQ(ierr); 40 ierr = PetscViewerMatlabPutVariable(viewer,((PetscObject)da)->name,mx);CHKERRQ(ierr); 41 } 42 PetscFunctionReturn(0); 43 } 44 #endif 45 46 #undef __FUNCT__ 47 #define __FUNCT__ "DMView_DA_Binary" 48 PetscErrorCode DMView_DA_Binary(DM da,PetscViewer viewer) 49 { 50 PetscErrorCode ierr; 51 PetscMPIInt rank; 52 PetscInt dim,m,n,p,dof,swidth,M,N,P; 53 DMDAStencilType stencil; 54 DMDABoundaryType bx,by,bz; 55 MPI_Comm comm; 56 DM_DA *dd = (DM_DA*)da->data; 57 PetscInt classid = DM_FILE_CLASSID,subclassid = DMDA_FILE_CLASSID ; 58 PetscBool coors = PETSC_FALSE; 59 60 PetscFunctionBegin; 61 ierr = PetscObjectGetComm((PetscObject)da,&comm);CHKERRQ(ierr); 62 63 ierr = DMDAGetInfo(da,&dim,&m,&n,&p,&M,&N,&P,&dof,&swidth,&bx,&by,&bz,&stencil);CHKERRQ(ierr); 64 ierr = MPI_Comm_rank(comm,&rank);CHKERRQ(ierr); 65 if (!rank) { 66 67 ierr = PetscViewerBinaryWrite(viewer,&classid,1,PETSC_INT,PETSC_FALSE);CHKERRQ(ierr); 68 ierr = PetscViewerBinaryWrite(viewer,&subclassid,1,PETSC_INT,PETSC_FALSE);CHKERRQ(ierr); 69 ierr = PetscViewerBinaryWrite(viewer,&dim,1,PETSC_INT,PETSC_FALSE);CHKERRQ(ierr); 70 ierr = PetscViewerBinaryWrite(viewer,&m,1,PETSC_INT,PETSC_FALSE);CHKERRQ(ierr); 71 ierr = PetscViewerBinaryWrite(viewer,&n,1,PETSC_INT,PETSC_FALSE);CHKERRQ(ierr); 72 ierr = PetscViewerBinaryWrite(viewer,&p,1,PETSC_INT,PETSC_FALSE);CHKERRQ(ierr); 73 ierr = PetscViewerBinaryWrite(viewer,&dof,1,PETSC_INT,PETSC_FALSE);CHKERRQ(ierr); 74 ierr = PetscViewerBinaryWrite(viewer,&swidth,1,PETSC_INT,PETSC_FALSE);CHKERRQ(ierr); 75 ierr = PetscViewerBinaryWrite(viewer,&bx,1,PETSC_ENUM,PETSC_FALSE);CHKERRQ(ierr); 76 ierr = PetscViewerBinaryWrite(viewer,&by,1,PETSC_ENUM,PETSC_FALSE);CHKERRQ(ierr); 77 ierr = PetscViewerBinaryWrite(viewer,&bz,1,PETSC_ENUM,PETSC_FALSE);CHKERRQ(ierr); 78 ierr = PetscViewerBinaryWrite(viewer,&stencil,1,PETSC_ENUM,PETSC_FALSE);CHKERRQ(ierr); 79 if (dd->coordinates) coors = PETSC_TRUE; 80 ierr = PetscViewerBinaryWrite(viewer,&coors,1,PETSC_BOOL,PETSC_FALSE);CHKERRQ(ierr); 81 } 82 83 /* save the coordinates if they exist to disk (in the natural ordering) */ 84 if (dd->coordinates) { 85 ierr = VecView(dd->coordinates,viewer);CHKERRQ(ierr); 86 } 87 PetscFunctionReturn(0); 88 } 89 90 #undef __FUNCT__ 91 #define __FUNCT__ "DMView_DA_VTK" 92 PetscErrorCode DMView_DA_VTK(DM da, PetscViewer viewer) 93 { 94 PetscInt dim, dof, M = 0, N = 0, P = 0; 95 PetscErrorCode ierr; 96 DM_DA *dd = (DM_DA*)da->data; 97 98 PetscFunctionBegin; 99 ierr = DMDAGetInfo(da, &dim, &M, &N, &P, PETSC_NULL, PETSC_NULL, PETSC_NULL, &dof, PETSC_NULL, PETSC_NULL, PETSC_NULL, PETSC_NULL, PETSC_NULL);CHKERRQ(ierr); 100 /* if (dim != 3) {SETERRQ(PETSC_COMM_SELF,PETSC_ERR_SUP, "VTK output only works for three dimensional DMDAs.");} */ 101 if (!dd->coordinates) SETERRQ(((PetscObject)da)->comm,PETSC_ERR_SUP, "VTK output requires DMDA coordinates."); 102 /* Write Header */ 103 ierr = PetscViewerASCIIPrintf(viewer,"# vtk DataFile Version 2.0\n");CHKERRQ(ierr); 104 ierr = PetscViewerASCIIPrintf(viewer,"Structured Mesh Example\n");CHKERRQ(ierr); 105 ierr = PetscViewerASCIIPrintf(viewer,"ASCII\n");CHKERRQ(ierr); 106 ierr = PetscViewerASCIIPrintf(viewer,"DATASET STRUCTURED_GRID\n");CHKERRQ(ierr); 107 ierr = PetscViewerASCIIPrintf(viewer,"DIMENSIONS %d %d %d\n", M, N, P);CHKERRQ(ierr); 108 ierr = PetscViewerASCIIPrintf(viewer,"POINTS %d double\n", M*N*P);CHKERRQ(ierr); 109 if (dd->coordinates) { 110 DM dac; 111 Vec natural; 112 113 ierr = DMDAGetCoordinateDA(da, &dac);CHKERRQ(ierr); 114 ierr = DMDACreateNaturalVector(dac, &natural);CHKERRQ(ierr); 115 ierr = PetscObjectSetOptionsPrefix((PetscObject) natural, "coor_");CHKERRQ(ierr); 116 ierr = DMDAGlobalToNaturalBegin(dac, dd->coordinates, INSERT_VALUES, natural);CHKERRQ(ierr); 117 ierr = DMDAGlobalToNaturalEnd(dac, dd->coordinates, INSERT_VALUES, natural);CHKERRQ(ierr); 118 ierr = PetscViewerPushFormat(viewer, PETSC_VIEWER_ASCII_VTK_COORDS);CHKERRQ(ierr); 119 ierr = VecView(natural, viewer);CHKERRQ(ierr); 120 ierr = PetscViewerPopFormat(viewer);CHKERRQ(ierr); 121 ierr = VecDestroy(&natural);CHKERRQ(ierr); 122 } 123 PetscFunctionReturn(0); 124 } 125 126 #undef __FUNCT__ 127 #define __FUNCT__ "DMDAGetInfo" 128 /*@C 129 DMDAGetInfo - Gets information about a given distributed array. 130 131 Not Collective 132 133 Input Parameter: 134 . da - the distributed array 135 136 Output Parameters: 137 + dim - dimension of the distributed array (1, 2, or 3) 138 . M, N, P - global dimension in each direction of the array 139 . m, n, p - corresponding number of procs in each dimension 140 . dof - number of degrees of freedom per node 141 . s - stencil width 142 . bx,by,bz - type of ghost nodes at boundary, one of DMDA_BOUNDARY_NONE, DMDA_BOUNDARY_GHOSTED, 143 DMDA_BOUNDARY_MIRROR, DMDA_BOUNDARY_PERIODIC 144 - st - stencil type, either DMDA_STENCIL_STAR or DMDA_STENCIL_BOX 145 146 Level: beginner 147 148 Note: 149 Use PETSC_NULL (PETSC_NULL_INTEGER in Fortran) in place of any output parameter that is not of interest. 150 151 .keywords: distributed array, get, information 152 153 .seealso: DMView(), DMDAGetCorners(), DMDAGetLocalInfo() 154 @*/ 155 PetscErrorCode DMDAGetInfo(DM da,PetscInt *dim,PetscInt *M,PetscInt *N,PetscInt *P,PetscInt *m,PetscInt *n,PetscInt *p,PetscInt *dof,PetscInt *s,DMDABoundaryType *bx,DMDABoundaryType *by,DMDABoundaryType *bz,DMDAStencilType *st) 156 { 157 DM_DA *dd = (DM_DA*)da->data; 158 159 PetscFunctionBegin; 160 PetscValidHeaderSpecific(da,DM_CLASSID,1); 161 if (dim) *dim = dd->dim; 162 if (M) *M = dd->M; 163 if (N) *N = dd->N; 164 if (P) *P = dd->P; 165 if (m) *m = dd->m; 166 if (n) *n = dd->n; 167 if (p) *p = dd->p; 168 if (dof) *dof = dd->w; 169 if (s) *s = dd->s; 170 if (bx) *bx = dd->bx; 171 if (by) *by = dd->by; 172 if (bz) *bz = dd->bz; 173 if (st) *st = dd->stencil_type; 174 PetscFunctionReturn(0); 175 } 176 177 #undef __FUNCT__ 178 #define __FUNCT__ "DMDAGetLocalInfo" 179 /*@C 180 DMDAGetLocalInfo - Gets information about a given distributed array and this processors location in it 181 182 Not Collective 183 184 Input Parameter: 185 . da - the distributed array 186 187 Output Parameters: 188 . dainfo - structure containing the information 189 190 Level: beginner 191 192 .keywords: distributed array, get, information 193 194 .seealso: DMDAGetInfo(), DMDAGetCorners() 195 @*/ 196 PetscErrorCode DMDAGetLocalInfo(DM da,DMDALocalInfo *info) 197 { 198 PetscInt w; 199 DM_DA *dd = (DM_DA*)da->data; 200 201 PetscFunctionBegin; 202 PetscValidHeaderSpecific(da,DM_CLASSID,1); 203 PetscValidPointer(info,2); 204 info->da = da; 205 info->dim = dd->dim; 206 info->mx = dd->M; 207 info->my = dd->N; 208 info->mz = dd->P; 209 info->dof = dd->w; 210 info->sw = dd->s; 211 info->bx = dd->bx; 212 info->by = dd->by; 213 info->bz = dd->bz; 214 info->st = dd->stencil_type; 215 216 /* since the xs, xe ... have all been multiplied by the number of degrees 217 of freedom per cell, w = dd->w, we divide that out before returning.*/ 218 w = dd->w; 219 info->xs = dd->xs/w; 220 info->xm = (dd->xe - dd->xs)/w; 221 /* the y and z have NOT been multiplied by w */ 222 info->ys = dd->ys; 223 info->ym = (dd->ye - dd->ys); 224 info->zs = dd->zs; 225 info->zm = (dd->ze - dd->zs); 226 227 info->gxs = dd->Xs/w; 228 info->gxm = (dd->Xe - dd->Xs)/w; 229 /* the y and z have NOT been multiplied by w */ 230 info->gys = dd->Ys; 231 info->gym = (dd->Ye - dd->Ys); 232 info->gzs = dd->Zs; 233 info->gzm = (dd->Ze - dd->Zs); 234 PetscFunctionReturn(0); 235 } 236 237