1 #include <petscdm.h> 2 #include <petscdmda.h> /*I "petscdmda.h" I*/ 3 #include <petsc/private/dmswarmimpl.h> /*I "petscdmswarm.h" I*/ 4 #include "../src/dm/impls/swarm/data_bucket.h" 5 6 static PetscErrorCode private_DMSwarmCreateCellLocalCoords_DA_Q1_Regular(PetscInt dim, PetscInt np[], PetscInt *_npoints, PetscReal **_xi) 7 { 8 PetscReal *xi; 9 PetscInt d, npoints = 0, cnt; 10 PetscReal ds[] = {0.0, 0.0, 0.0}; 11 PetscInt ii, jj, kk; 12 13 PetscFunctionBegin; 14 switch (dim) { 15 case 1: 16 npoints = np[0]; 17 break; 18 case 2: 19 npoints = np[0] * np[1]; 20 break; 21 case 3: 22 npoints = np[0] * np[1] * np[2]; 23 break; 24 } 25 for (d = 0; d < dim; d++) ds[d] = 2.0 / ((PetscReal)np[d]); 26 27 PetscCall(PetscMalloc1(dim * npoints, &xi)); 28 switch (dim) { 29 case 1: 30 cnt = 0; 31 for (ii = 0; ii < np[0]; ii++) { 32 xi[dim * cnt + 0] = -1.0 + 0.5 * ds[d] + ii * ds[0]; 33 cnt++; 34 } 35 break; 36 37 case 2: 38 cnt = 0; 39 for (jj = 0; jj < np[1]; jj++) { 40 for (ii = 0; ii < np[0]; ii++) { 41 xi[dim * cnt + 0] = -1.0 + 0.5 * ds[0] + ii * ds[0]; 42 xi[dim * cnt + 1] = -1.0 + 0.5 * ds[1] + jj * ds[1]; 43 cnt++; 44 } 45 } 46 break; 47 48 case 3: 49 cnt = 0; 50 for (kk = 0; kk < np[2]; kk++) { 51 for (jj = 0; jj < np[1]; jj++) { 52 for (ii = 0; ii < np[0]; ii++) { 53 xi[dim * cnt + 0] = -1.0 + 0.5 * ds[0] + ii * ds[0]; 54 xi[dim * cnt + 1] = -1.0 + 0.5 * ds[1] + jj * ds[1]; 55 xi[dim * cnt + 2] = -1.0 + 0.5 * ds[2] + kk * ds[2]; 56 cnt++; 57 } 58 } 59 } 60 break; 61 } 62 *_npoints = npoints; 63 *_xi = xi; 64 PetscFunctionReturn(PETSC_SUCCESS); 65 } 66 67 static PetscErrorCode private_DMSwarmCreateCellLocalCoords_DA_Q1_Gauss(PetscInt dim, PetscInt np_1d, PetscInt *_npoints, PetscReal **_xi) 68 { 69 PetscQuadrature quadrature; 70 const PetscReal *quadrature_xi; 71 PetscReal *xi; 72 PetscInt d, q, npoints_q; 73 74 PetscFunctionBegin; 75 PetscCall(PetscDTGaussTensorQuadrature(dim, 1, np_1d, -1.0, 1.0, &quadrature)); 76 PetscCall(PetscQuadratureGetData(quadrature, NULL, NULL, &npoints_q, &quadrature_xi, NULL)); 77 PetscCall(PetscMalloc1(dim * npoints_q, &xi)); 78 for (q = 0; q < npoints_q; q++) { 79 for (d = 0; d < dim; d++) xi[dim * q + d] = quadrature_xi[dim * q + d]; 80 } 81 PetscCall(PetscQuadratureDestroy(&quadrature)); 82 *_npoints = npoints_q; 83 *_xi = xi; 84 PetscFunctionReturn(PETSC_SUCCESS); 85 } 86 87 static PetscErrorCode private_DMSwarmInsertPointsUsingCellDM_DA_Q1(DM dm, DM dmc, PetscInt npoints, DMSwarmPICLayoutType layout) 88 { 89 PetscInt dim, npoints_q; 90 PetscInt nel, npe, e, q, k, d; 91 const PetscInt *element_list; 92 PetscReal **basis; 93 PetscReal *xi; 94 Vec coor; 95 const PetscScalar *_coor; 96 PetscReal *elcoor; 97 PetscReal *swarm_coor; 98 PetscInt *swarm_cellid; 99 PetscInt pcnt; 100 101 PetscFunctionBegin; 102 PetscCall(DMGetDimension(dm, &dim)); 103 switch (layout) { 104 case DMSWARMPIC_LAYOUT_REGULAR: { 105 PetscInt np_dir[3]; 106 np_dir[0] = np_dir[1] = np_dir[2] = npoints; 107 PetscCall(private_DMSwarmCreateCellLocalCoords_DA_Q1_Regular(dim, np_dir, &npoints_q, &xi)); 108 } break; 109 case DMSWARMPIC_LAYOUT_GAUSS: 110 PetscCall(private_DMSwarmCreateCellLocalCoords_DA_Q1_Gauss(dim, npoints, &npoints_q, &xi)); 111 break; 112 113 case DMSWARMPIC_LAYOUT_SUBDIVISION: { 114 PetscInt s, nsub; 115 PetscInt np_dir[3]; 116 nsub = npoints; 117 np_dir[0] = 1; 118 for (s = 0; s < nsub; s++) np_dir[0] *= 2; 119 np_dir[1] = np_dir[0]; 120 np_dir[2] = np_dir[0]; 121 PetscCall(private_DMSwarmCreateCellLocalCoords_DA_Q1_Regular(dim, np_dir, &npoints_q, &xi)); 122 } break; 123 default: 124 SETERRQ(PetscObjectComm((PetscObject)dm), PETSC_ERR_SUP, "A valid DMSwarmPIC layout must be provided"); 125 } 126 127 PetscCall(DMDAGetElements(dmc, &nel, &npe, &element_list)); 128 PetscCall(PetscMalloc1(dim * npe, &elcoor)); 129 PetscCall(PetscMalloc1(npoints_q, &basis)); 130 for (q = 0; q < npoints_q; q++) { 131 PetscCall(PetscMalloc1(npe, &basis[q])); 132 133 switch (dim) { 134 case 1: 135 basis[q][0] = 0.5 * (1.0 - xi[dim * q + 0]); 136 basis[q][1] = 0.5 * (1.0 + xi[dim * q + 0]); 137 break; 138 case 2: 139 basis[q][0] = 0.25 * (1.0 - xi[dim * q + 0]) * (1.0 - xi[dim * q + 1]); 140 basis[q][1] = 0.25 * (1.0 + xi[dim * q + 0]) * (1.0 - xi[dim * q + 1]); 141 basis[q][2] = 0.25 * (1.0 + xi[dim * q + 0]) * (1.0 + xi[dim * q + 1]); 142 basis[q][3] = 0.25 * (1.0 - xi[dim * q + 0]) * (1.0 + xi[dim * q + 1]); 143 break; 144 145 case 3: 146 basis[q][0] = 0.125 * (1.0 - xi[dim * q + 0]) * (1.0 - xi[dim * q + 1]) * (1.0 - xi[dim * q + 2]); 147 basis[q][1] = 0.125 * (1.0 + xi[dim * q + 0]) * (1.0 - xi[dim * q + 1]) * (1.0 - xi[dim * q + 2]); 148 basis[q][2] = 0.125 * (1.0 + xi[dim * q + 0]) * (1.0 + xi[dim * q + 1]) * (1.0 - xi[dim * q + 2]); 149 basis[q][3] = 0.125 * (1.0 - xi[dim * q + 0]) * (1.0 + xi[dim * q + 1]) * (1.0 - xi[dim * q + 2]); 150 basis[q][4] = 0.125 * (1.0 - xi[dim * q + 0]) * (1.0 - xi[dim * q + 1]) * (1.0 + xi[dim * q + 2]); 151 basis[q][5] = 0.125 * (1.0 + xi[dim * q + 0]) * (1.0 - xi[dim * q + 1]) * (1.0 + xi[dim * q + 2]); 152 basis[q][6] = 0.125 * (1.0 + xi[dim * q + 0]) * (1.0 + xi[dim * q + 1]) * (1.0 + xi[dim * q + 2]); 153 basis[q][7] = 0.125 * (1.0 - xi[dim * q + 0]) * (1.0 + xi[dim * q + 1]) * (1.0 + xi[dim * q + 2]); 154 break; 155 } 156 } 157 158 PetscCall(DMSwarmSetLocalSizes(dm, npoints_q * nel, -1)); 159 PetscCall(DMSwarmGetField(dm, DMSwarmPICField_coor, NULL, NULL, (void **)&swarm_coor)); 160 PetscCall(DMSwarmGetField(dm, DMSwarmPICField_cellid, NULL, NULL, (void **)&swarm_cellid)); 161 162 PetscCall(DMGetCoordinatesLocal(dmc, &coor)); 163 PetscCall(VecGetArrayRead(coor, &_coor)); 164 pcnt = 0; 165 for (e = 0; e < nel; e++) { 166 const PetscInt *element = &element_list[npe * e]; 167 168 for (k = 0; k < npe; k++) { 169 for (d = 0; d < dim; d++) elcoor[dim * k + d] = PetscRealPart(_coor[dim * element[k] + d]); 170 } 171 172 for (q = 0; q < npoints_q; q++) { 173 for (d = 0; d < dim; d++) swarm_coor[dim * pcnt + d] = 0.0; 174 for (k = 0; k < npe; k++) { 175 for (d = 0; d < dim; d++) swarm_coor[dim * pcnt + d] += basis[q][k] * elcoor[dim * k + d]; 176 } 177 swarm_cellid[pcnt] = e; 178 pcnt++; 179 } 180 } 181 PetscCall(VecRestoreArrayRead(coor, &_coor)); 182 PetscCall(DMSwarmRestoreField(dm, DMSwarmPICField_cellid, NULL, NULL, (void **)&swarm_cellid)); 183 PetscCall(DMSwarmRestoreField(dm, DMSwarmPICField_coor, NULL, NULL, (void **)&swarm_coor)); 184 PetscCall(DMDARestoreElements(dmc, &nel, &npe, &element_list)); 185 186 PetscCall(PetscFree(xi)); 187 PetscCall(PetscFree(elcoor)); 188 for (q = 0; q < npoints_q; q++) PetscCall(PetscFree(basis[q])); 189 PetscCall(PetscFree(basis)); 190 PetscFunctionReturn(PETSC_SUCCESS); 191 } 192 193 PetscErrorCode private_DMSwarmInsertPointsUsingCellDM_DA(DM dm, DM celldm, DMSwarmPICLayoutType layout, PetscInt layout_param) 194 { 195 DMDAElementType etype; 196 PetscInt dim; 197 198 PetscFunctionBegin; 199 PetscCall(DMDAGetElementType(celldm, &etype)); 200 PetscCall(DMGetDimension(celldm, &dim)); 201 switch (etype) { 202 case DMDA_ELEMENT_P1: 203 SETERRQ(PetscObjectComm((PetscObject)dm), PETSC_ERR_SUP, "DA support is not currently available for DMDA_ELEMENT_P1"); 204 case DMDA_ELEMENT_Q1: 205 PetscCheck(dim != 1, PetscObjectComm((PetscObject)dm), PETSC_ERR_SUP, "Support only available for dim = 2, 3"); 206 PetscCall(private_DMSwarmInsertPointsUsingCellDM_DA_Q1(dm, celldm, layout_param, layout)); 207 break; 208 } 209 PetscFunctionReturn(PETSC_SUCCESS); 210 } 211