Actual source code: swarmpic_da.c
1: #include <petscdm.h>
2: #include <petscdmda.h>
3: #include <petsc/private/dmswarmimpl.h>
4: #include "../src/dm/impls/swarm/data_bucket.h"
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;
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]);
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;
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;
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: }
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;
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: }
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;
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;
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: }
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]));
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;
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: }
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));
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];
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: }
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));
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: }
193: PetscErrorCode private_DMSwarmInsertPointsUsingCellDM_DA(DM dm, DM celldm, DMSwarmPICLayoutType layout, PetscInt layout_param)
194: {
195: DMDAElementType etype;
196: PetscInt dim;
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: }