1 2 /* 3 Code for manipulating distributed regular arrays in parallel. 4 */ 5 6 #include <petsc-private/dmdaimpl.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 DMBoundaryType 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(PetscObjectComm((PetscObject)da),&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 DMBoundaryType bx,by,bz; 55 MPI_Comm comm; 56 PetscBool coors = PETSC_FALSE; 57 58 PetscFunctionBegin; 59 ierr = PetscObjectGetComm((PetscObject)da,&comm);CHKERRQ(ierr); 60 61 ierr = DMDAGetInfo(da,&dim,&m,&n,&p,&M,&N,&P,&dof,&swidth,&bx,&by,&bz,&stencil);CHKERRQ(ierr); 62 ierr = MPI_Comm_rank(comm,&rank);CHKERRQ(ierr); 63 if (!rank) { 64 ierr = PetscViewerBinaryWrite(viewer,&dim,1,PETSC_INT,PETSC_FALSE);CHKERRQ(ierr); 65 ierr = PetscViewerBinaryWrite(viewer,&m,1,PETSC_INT,PETSC_FALSE);CHKERRQ(ierr); 66 ierr = PetscViewerBinaryWrite(viewer,&n,1,PETSC_INT,PETSC_FALSE);CHKERRQ(ierr); 67 ierr = PetscViewerBinaryWrite(viewer,&p,1,PETSC_INT,PETSC_FALSE);CHKERRQ(ierr); 68 ierr = PetscViewerBinaryWrite(viewer,&dof,1,PETSC_INT,PETSC_FALSE);CHKERRQ(ierr); 69 ierr = PetscViewerBinaryWrite(viewer,&swidth,1,PETSC_INT,PETSC_FALSE);CHKERRQ(ierr); 70 ierr = PetscViewerBinaryWrite(viewer,&bx,1,PETSC_ENUM,PETSC_FALSE);CHKERRQ(ierr); 71 ierr = PetscViewerBinaryWrite(viewer,&by,1,PETSC_ENUM,PETSC_FALSE);CHKERRQ(ierr); 72 ierr = PetscViewerBinaryWrite(viewer,&bz,1,PETSC_ENUM,PETSC_FALSE);CHKERRQ(ierr); 73 ierr = PetscViewerBinaryWrite(viewer,&stencil,1,PETSC_ENUM,PETSC_FALSE);CHKERRQ(ierr); 74 if (da->coordinates) coors = PETSC_TRUE; 75 ierr = PetscViewerBinaryWrite(viewer,&coors,1,PETSC_BOOL,PETSC_FALSE);CHKERRQ(ierr); 76 } 77 78 /* save the coordinates if they exist to disk (in the natural ordering) */ 79 if (da->coordinates) { 80 ierr = VecView(da->coordinates,viewer);CHKERRQ(ierr); 81 } 82 PetscFunctionReturn(0); 83 } 84 85 #undef __FUNCT__ 86 #define __FUNCT__ "DMView_DA_VTK" 87 PetscErrorCode DMView_DA_VTK(DM da, PetscViewer viewer) 88 { 89 PetscInt dim, dof, M = 0, N = 0, P = 0; 90 PetscErrorCode ierr; 91 92 PetscFunctionBegin; 93 ierr = DMDAGetInfo(da, &dim, &M, &N, &P, NULL, NULL, NULL, &dof, NULL, NULL, NULL, NULL, NULL);CHKERRQ(ierr); 94 if (!da->coordinates) SETERRQ(PetscObjectComm((PetscObject)da),PETSC_ERR_SUP, "VTK output requires DMDA coordinates."); 95 /* Write Header */ 96 ierr = PetscViewerASCIIPrintf(viewer,"# vtk DataFile Version 2.0\n");CHKERRQ(ierr); 97 ierr = PetscViewerASCIIPrintf(viewer,"Structured Mesh Example\n");CHKERRQ(ierr); 98 ierr = PetscViewerASCIIPrintf(viewer,"ASCII\n");CHKERRQ(ierr); 99 ierr = PetscViewerASCIIPrintf(viewer,"DATASET STRUCTURED_GRID\n");CHKERRQ(ierr); 100 ierr = PetscViewerASCIIPrintf(viewer,"DIMENSIONS %d %d %d\n", M, N, P);CHKERRQ(ierr); 101 ierr = PetscViewerASCIIPrintf(viewer,"POINTS %d double\n", M*N*P);CHKERRQ(ierr); 102 if (da->coordinates) { 103 DM dac; 104 Vec natural; 105 106 ierr = DMGetCoordinateDM(da, &dac);CHKERRQ(ierr); 107 ierr = DMDACreateNaturalVector(dac, &natural);CHKERRQ(ierr); 108 ierr = PetscObjectSetOptionsPrefix((PetscObject) natural, "coor_");CHKERRQ(ierr); 109 ierr = DMDAGlobalToNaturalBegin(dac, da->coordinates, INSERT_VALUES, natural);CHKERRQ(ierr); 110 ierr = DMDAGlobalToNaturalEnd(dac, da->coordinates, INSERT_VALUES, natural);CHKERRQ(ierr); 111 ierr = PetscViewerPushFormat(viewer, PETSC_VIEWER_ASCII_VTK_COORDS);CHKERRQ(ierr); 112 ierr = VecView(natural, viewer);CHKERRQ(ierr); 113 ierr = PetscViewerPopFormat(viewer);CHKERRQ(ierr); 114 ierr = VecDestroy(&natural);CHKERRQ(ierr); 115 } 116 PetscFunctionReturn(0); 117 } 118 119 #undef __FUNCT__ 120 #define __FUNCT__ "DMDAGetInfo" 121 /*@C 122 DMDAGetInfo - Gets information about a given distributed array. 123 124 Not Collective 125 126 Input Parameter: 127 . da - the distributed array 128 129 Output Parameters: 130 + dim - dimension of the distributed array (1, 2, or 3) 131 . M, N, P - global dimension in each direction of the array 132 . m, n, p - corresponding number of procs in each dimension 133 . dof - number of degrees of freedom per node 134 . s - stencil width 135 . bx,by,bz - type of ghost nodes at boundary, one of DM_BOUNDARY_NONE, DM_BOUNDARY_GHOSTED, 136 DM_BOUNDARY_MIRROR, DM_BOUNDARY_PERIODIC 137 - st - stencil type, either DMDA_STENCIL_STAR or DMDA_STENCIL_BOX 138 139 Level: beginner 140 141 Note: 142 Use NULL (NULL_INTEGER in Fortran) in place of any output parameter that is not of interest. 143 144 .keywords: distributed array, get, information 145 146 .seealso: DMView(), DMDAGetCorners(), DMDAGetLocalInfo() 147 @*/ 148 PetscErrorCode DMDAGetInfo(DM da,PetscInt *dim,PetscInt *M,PetscInt *N,PetscInt *P,PetscInt *m,PetscInt *n,PetscInt *p,PetscInt *dof,PetscInt *s,DMBoundaryType *bx,DMBoundaryType *by,DMBoundaryType *bz,DMDAStencilType *st) 149 { 150 DM_DA *dd = (DM_DA*)da->data; 151 152 PetscFunctionBegin; 153 PetscValidHeaderSpecific(da,DM_CLASSID,1); 154 if (dim) *dim = da->dim; 155 if (M) { 156 if (dd->Mo < 0) *M = dd->M; 157 else *M = dd->Mo; 158 } 159 if (N) { 160 if (dd->No < 0) *N = dd->N; 161 else *N = dd->No; 162 } 163 if (P) { 164 if (dd->Po < 0) *P = dd->P; 165 else *P = dd->Po; 166 } 167 if (m) *m = dd->m; 168 if (n) *n = dd->n; 169 if (p) *p = dd->p; 170 if (dof) *dof = dd->w; 171 if (s) *s = dd->s; 172 if (bx) *bx = dd->bx; 173 if (by) *by = dd->by; 174 if (bz) *bz = dd->bz; 175 if (st) *st = dd->stencil_type; 176 PetscFunctionReturn(0); 177 } 178 179 #undef __FUNCT__ 180 #define __FUNCT__ "DMDAGetLocalInfo" 181 /*@C 182 DMDAGetLocalInfo - Gets information about a given distributed array and this processors location in it 183 184 Not Collective 185 186 Input Parameter: 187 . da - the distributed array 188 189 Output Parameters: 190 . dainfo - structure containing the information 191 192 Level: beginner 193 194 .keywords: distributed array, get, information 195 196 .seealso: DMDAGetInfo(), DMDAGetCorners() 197 @*/ 198 PetscErrorCode DMDAGetLocalInfo(DM da,DMDALocalInfo *info) 199 { 200 PetscInt w; 201 DM_DA *dd = (DM_DA*)da->data; 202 203 PetscFunctionBegin; 204 PetscValidHeaderSpecific(da,DM_CLASSID,1); 205 PetscValidPointer(info,2); 206 info->da = da; 207 info->dim = da->dim; 208 if (dd->Mo < 0) info->mx = dd->M; 209 else info->mx = dd->Mo; 210 if (dd->No < 0) info->my = dd->N; 211 else info->my = dd->No; 212 if (dd->Po < 0) info->mz = dd->P; 213 else info->mz = dd->Po; 214 info->dof = dd->w; 215 info->sw = dd->s; 216 info->bx = dd->bx; 217 info->by = dd->by; 218 info->bz = dd->bz; 219 info->st = dd->stencil_type; 220 221 /* since the xs, xe ... have all been multiplied by the number of degrees 222 of freedom per cell, w = dd->w, we divide that out before returning.*/ 223 w = dd->w; 224 info->xs = dd->xs/w + dd->xo; 225 info->xm = (dd->xe - dd->xs)/w; 226 /* the y and z have NOT been multiplied by w */ 227 info->ys = dd->ys + dd->yo; 228 info->ym = (dd->ye - dd->ys); 229 info->zs = dd->zs + dd->zo; 230 info->zm = (dd->ze - dd->zs); 231 232 info->gxs = dd->Xs/w + dd->xo; 233 info->gxm = (dd->Xe - dd->Xs)/w; 234 /* the y and z have NOT been multiplied by w */ 235 info->gys = dd->Ys + dd->yo; 236 info->gym = (dd->Ye - dd->Ys); 237 info->gzs = dd->Zs + dd->zo; 238 info->gzm = (dd->Ze - dd->Zs); 239 PetscFunctionReturn(0); 240 } 241