1 #define PETSCDM_DLL 2 3 /* 4 Code for manipulating distributed regular arrays in parallel. 5 */ 6 7 #include "private/daimpl.h" /*I "petscdm.h" I*/ 8 9 #if defined(PETSC_HAVE_MATLAB_ENGINE) 10 #include "mat.h" /* MATLAB include file */ 11 12 #undef __FUNCT__ 13 #define __FUNCT__ "DMView_DA_Matlab" 14 PetscErrorCode DMView_DA_Matlab(DM da,PetscViewer viewer) 15 { 16 PetscErrorCode ierr; 17 PetscMPIInt rank; 18 PetscInt dim,m,n,p,dof,swidth; 19 DMDAStencilType stencil; 20 DMDAPeriodicType periodic; 21 mxArray *mx; 22 const char *fnames[] = {"dimension","m","n","p","dof","stencil_width","periodicity","stencil_type"}; 23 24 PetscFunctionBegin; 25 ierr = MPI_Comm_rank(((PetscObject)da)->comm,&rank);CHKERRQ(ierr); 26 if (!rank) { 27 ierr = DMDAGetInfo(da,&dim,&m,&n,&p,0,0,0,&dof,&swidth,&periodic,&stencil);CHKERRQ(ierr); 28 mx = mxCreateStructMatrix(1,1,8,(const char **)fnames); 29 if (!mx) SETERRQ(PETSC_COMM_SELF,PETSC_ERR_LIB,"Unable to generate MATLAB struct array to hold DMDA informations"); 30 mxSetFieldByNumber(mx,0,0,mxCreateDoubleScalar((double)dim)); 31 mxSetFieldByNumber(mx,0,1,mxCreateDoubleScalar((double)m)); 32 mxSetFieldByNumber(mx,0,2,mxCreateDoubleScalar((double)n)); 33 mxSetFieldByNumber(mx,0,3,mxCreateDoubleScalar((double)p)); 34 mxSetFieldByNumber(mx,0,4,mxCreateDoubleScalar((double)dof)); 35 mxSetFieldByNumber(mx,0,5,mxCreateDoubleScalar((double)swidth)); 36 mxSetFieldByNumber(mx,0,6,mxCreateDoubleScalar((double)periodic)); 37 mxSetFieldByNumber(mx,0,7,mxCreateDoubleScalar((double)stencil)); 38 ierr = PetscObjectName((PetscObject)da);CHKERRQ(ierr); 39 ierr = PetscViewerMatlabPutVariable(viewer,((PetscObject)da)->name,mx);CHKERRQ(ierr); 40 } 41 PetscFunctionReturn(0); 42 } 43 #endif 44 45 #undef __FUNCT__ 46 #define __FUNCT__ "DMView_DA_Binary" 47 PetscErrorCode DMView_DA_Binary(DM da,PetscViewer viewer) 48 { 49 PetscErrorCode ierr; 50 PetscMPIInt rank; 51 PetscInt i,dim,m,n,p,dof,swidth,M,N,P; 52 size_t j,len; 53 DMDAStencilType stencil; 54 DMDAPeriodicType periodic; 55 MPI_Comm comm; 56 DM_DA *dd = (DM_DA*)da->data; 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,&periodic,&stencil);CHKERRQ(ierr); 62 ierr = MPI_Comm_rank(comm,&rank);CHKERRQ(ierr); 63 if (!rank) { 64 FILE *file; 65 66 ierr = PetscViewerBinaryGetInfoPointer(viewer,&file);CHKERRQ(ierr); 67 if (file) { 68 char fieldname[PETSC_MAX_PATH_LEN]; 69 70 ierr = PetscFPrintf(PETSC_COMM_SELF,file,"-daload_info %D,%D,%D,%D,%D,%D,%D,%D\n",dim,m,n,p,dof,swidth,stencil,periodic);CHKERRQ(ierr); 71 for (i=0; i<dof; i++) { 72 if (dd->fieldname[i]) { 73 ierr = PetscStrncpy(fieldname,dd->fieldname[i],PETSC_MAX_PATH_LEN);CHKERRQ(ierr); 74 ierr = PetscStrlen(fieldname,&len);CHKERRQ(ierr); 75 len = PetscMin(PETSC_MAX_PATH_LEN,len);CHKERRQ(ierr); 76 for (j=0; j<len; j++) { 77 if (fieldname[j] == ' ') fieldname[j] = '_'; 78 } 79 ierr = PetscFPrintf(PETSC_COMM_SELF,file,"-daload_fieldname_%D %s\n",i,fieldname);CHKERRQ(ierr); 80 } 81 } 82 if (dd->coordinates) { /* save the DMDA's coordinates */ 83 ierr = PetscFPrintf(PETSC_COMM_SELF,file,"-daload_coordinates\n");CHKERRQ(ierr); 84 } 85 } 86 } 87 88 /* save the coordinates if they exist to disk (in the natural ordering) */ 89 if (dd->coordinates) { 90 DM dac; 91 const PetscInt *lx,*ly,*lz; 92 Vec natural; 93 94 /* create the appropriate DMDA to map to natural ordering */ 95 ierr = DMDAGetOwnershipRanges(da,&lx,&ly,&lz);CHKERRQ(ierr); 96 if (dim == 1) { 97 ierr = DMDACreate1d(comm,DMDA_NONPERIODIC,m,dim,0,lx,&dac);CHKERRQ(ierr); 98 } else if (dim == 2) { 99 ierr = DMDACreate2d(comm,DMDA_NONPERIODIC,DMDA_STENCIL_BOX,m,n,M,N,dim,0,lx,ly,&dac);CHKERRQ(ierr); 100 } else if (dim == 3) { 101 ierr = DMDACreate3d(comm,DMDA_NONPERIODIC,DMDA_STENCIL_BOX,m,n,p,M,N,P,dim,0,lx,ly,lz,&dac);CHKERRQ(ierr); 102 } else SETERRQ1(comm,PETSC_ERR_ARG_CORRUPT,"Dimension is not 1 2 or 3: %D\n",dim); 103 ierr = DMDACreateNaturalVector(dac,&natural);CHKERRQ(ierr); 104 ierr = PetscObjectSetOptionsPrefix((PetscObject)natural,"coor_");CHKERRQ(ierr); 105 ierr = DMDAGlobalToNaturalBegin(dac,dd->coordinates,INSERT_VALUES,natural);CHKERRQ(ierr); 106 ierr = DMDAGlobalToNaturalEnd(dac,dd->coordinates,INSERT_VALUES,natural);CHKERRQ(ierr); 107 ierr = VecView(natural,viewer);CHKERRQ(ierr); 108 ierr = VecDestroy(natural);CHKERRQ(ierr); 109 ierr = DMDestroy(dac);CHKERRQ(ierr); 110 } 111 PetscFunctionReturn(0); 112 } 113 114 #undef __FUNCT__ 115 #define __FUNCT__ "DMView_DA_VTK" 116 PetscErrorCode DMView_DA_VTK(DM da, PetscViewer viewer) 117 { 118 PetscInt dim, dof, M = 0, N = 0, P = 0; 119 PetscErrorCode ierr; 120 DM_DA *dd = (DM_DA*)da->data; 121 122 PetscFunctionBegin; 123 ierr = DMDAGetInfo(da, &dim, &M, &N, &P, PETSC_NULL, PETSC_NULL, PETSC_NULL, &dof, PETSC_NULL, PETSC_NULL, PETSC_NULL);CHKERRQ(ierr); 124 /* if (dim != 3) {SETERRQ(PETSC_COMM_SELF,PETSC_ERR_SUP, "VTK output only works for three dimensional DMDAs.");} */ 125 if (!dd->coordinates) SETERRQ(((PetscObject)da)->comm,PETSC_ERR_SUP, "VTK output requires DMDA coordinates."); 126 /* Write Header */ 127 ierr = PetscViewerASCIIPrintf(viewer,"# vtk DataFile Version 2.0\n");CHKERRQ(ierr); 128 ierr = PetscViewerASCIIPrintf(viewer,"Structured Mesh Example\n");CHKERRQ(ierr); 129 ierr = PetscViewerASCIIPrintf(viewer,"ASCII\n");CHKERRQ(ierr); 130 ierr = PetscViewerASCIIPrintf(viewer,"DATASET STRUCTURED_GRID\n");CHKERRQ(ierr); 131 ierr = PetscViewerASCIIPrintf(viewer,"DIMENSIONS %d %d %d\n", M, N, P);CHKERRQ(ierr); 132 ierr = PetscViewerASCIIPrintf(viewer,"POINTS %d double\n", M*N*P);CHKERRQ(ierr); 133 if (dd->coordinates) { 134 DM dac; 135 Vec natural; 136 137 ierr = DMDAGetCoordinateDA(da, &dac);CHKERRQ(ierr); 138 ierr = DMDACreateNaturalVector(dac, &natural);CHKERRQ(ierr); 139 ierr = PetscObjectSetOptionsPrefix((PetscObject) natural, "coor_");CHKERRQ(ierr); 140 ierr = DMDAGlobalToNaturalBegin(dac, dd->coordinates, INSERT_VALUES, natural);CHKERRQ(ierr); 141 ierr = DMDAGlobalToNaturalEnd(dac, dd->coordinates, INSERT_VALUES, natural);CHKERRQ(ierr); 142 ierr = PetscViewerPushFormat(viewer, PETSC_VIEWER_ASCII_VTK_COORDS);CHKERRQ(ierr); 143 ierr = VecView(natural, viewer);CHKERRQ(ierr); 144 ierr = PetscViewerPopFormat(viewer);CHKERRQ(ierr); 145 ierr = VecDestroy(natural);CHKERRQ(ierr); 146 } 147 PetscFunctionReturn(0); 148 } 149 150 #undef __FUNCT__ 151 #define __FUNCT__ "DMDAGetInfo" 152 /*@C 153 DMDAGetInfo - Gets information about a given distributed array. 154 155 Not Collective 156 157 Input Parameter: 158 . da - the distributed array 159 160 Output Parameters: 161 + dim - dimension of the distributed array (1, 2, or 3) 162 . M, N, P - global dimension in each direction of the array 163 . m, n, p - corresponding number of procs in each dimension 164 . dof - number of degrees of freedom per node 165 . s - stencil width 166 . wrap - type of periodicity, one of DMDA_NONPERIODIC, DMDA_XPERIODIC, DMDA_YPERIODIC, 167 DMDA_XYPERIODIC, DMDA_XYZPERIODIC, DMDA_XZPERIODIC, DMDA_YZPERIODIC,DMDA_ZPERIODIC 168 - st - stencil type, either DMDA_STENCIL_STAR or DMDA_STENCIL_BOX 169 170 Level: beginner 171 172 Note: 173 Use PETSC_NULL (PETSC_NULL_INTEGER in Fortran) in place of any output parameter that is not of interest. 174 175 .keywords: distributed array, get, information 176 177 .seealso: DMView(), DMDAGetCorners(), DMDAGetLocalInfo() 178 @*/ 179 PetscErrorCode DMDAGetInfo(DM da,PetscInt *dim,PetscInt *M,PetscInt *N,PetscInt *P,PetscInt *m,PetscInt *n,PetscInt *p,PetscInt *dof,PetscInt *s,DMDAPeriodicType *wrap,DMDAStencilType *st) 180 { 181 DM_DA *dd = (DM_DA*)da->data; 182 183 PetscFunctionBegin; 184 PetscValidHeaderSpecific(da,DM_CLASSID,1); 185 if (dim) *dim = dd->dim; 186 if (M) *M = dd->M; 187 if (N) *N = dd->N; 188 if (P) *P = dd->P; 189 if (m) *m = dd->m; 190 if (n) *n = dd->n; 191 if (p) *p = dd->p; 192 if (dof) *dof = dd->w; 193 if (s) *s = dd->s; 194 if (wrap) *wrap = dd->wrap; 195 if (st) *st = dd->stencil_type; 196 PetscFunctionReturn(0); 197 } 198 199 #undef __FUNCT__ 200 #define __FUNCT__ "DMDAGetLocalInfo" 201 /*@C 202 DMDAGetLocalInfo - Gets information about a given distributed array and this processors location in it 203 204 Not Collective 205 206 Input Parameter: 207 . da - the distributed array 208 209 Output Parameters: 210 . dainfo - structure containing the information 211 212 Level: beginner 213 214 .keywords: distributed array, get, information 215 216 .seealso: DMDAGetInfo(), DMDAGetCorners() 217 @*/ 218 PetscErrorCode DMDAGetLocalInfo(DM da,DMDALocalInfo *info) 219 { 220 PetscInt w; 221 DM_DA *dd = (DM_DA*)da->data; 222 223 PetscFunctionBegin; 224 PetscValidHeaderSpecific(da,DM_CLASSID,1); 225 PetscValidPointer(info,2); 226 info->da = da; 227 info->dim = dd->dim; 228 info->mx = dd->M; 229 info->my = dd->N; 230 info->mz = dd->P; 231 info->dof = dd->w; 232 info->sw = dd->s; 233 info->pt = dd->wrap; 234 info->st = dd->stencil_type; 235 236 /* since the xs, xe ... have all been multiplied by the number of degrees 237 of freedom per cell, w = dd->w, we divide that out before returning.*/ 238 w = dd->w; 239 info->xs = dd->xs/w; 240 info->xm = (dd->xe - dd->xs)/w; 241 /* the y and z have NOT been multiplied by w */ 242 info->ys = dd->ys; 243 info->ym = (dd->ye - dd->ys); 244 info->zs = dd->zs; 245 info->zm = (dd->ze - dd->zs); 246 247 info->gxs = dd->Xs/w; 248 info->gxm = (dd->Xe - dd->Xs)/w; 249 /* the y and z have NOT been multiplied by w */ 250 info->gys = dd->Ys; 251 info->gym = (dd->Ye - dd->Ys); 252 info->gzs = dd->Zs; 253 info->gzm = (dd->Ze - dd->Zs); 254 PetscFunctionReturn(0); 255 } 256 257