Actual source code: ex33.c

  1: static char help[] = "Tests for high order geometry\n\n";

  3: #include <petscdmplex.h>
  4: #include <petscds.h>

  6: typedef struct {
  7:   PetscReal volume; /* Analytical volume of the mesh */
  8:   PetscReal tol;    /* Tolerance for volume check */
  9: } AppCtx;

 11: PetscErrorCode ProcessOptions(MPI_Comm comm, AppCtx *options)
 12: {
 13:   PetscFunctionBegin;
 14:   options->volume = -1.0;
 15:   options->tol    = PETSC_SMALL;

 17:   PetscOptionsBegin(comm, "", "Meshing Interpolation Test Options", "DMPLEX");
 18:   PetscCall(PetscOptionsReal("-volume", "The analytical volume of the mesh", "ex33.c", options->volume, &options->volume, NULL));
 19:   PetscCall(PetscOptionsReal("-tol", "The tolerance for the volume check", "ex33.c", options->tol, &options->tol, NULL));
 20:   PetscOptionsEnd();
 21:   PetscFunctionReturn(PETSC_SUCCESS);
 22: }

 24: PetscErrorCode CreateMesh(MPI_Comm comm, AppCtx *ctx, DM *dm)
 25: {
 26:   PetscFunctionBegin;
 27:   PetscCall(DMCreate(comm, dm));
 28:   PetscCall(DMSetType(*dm, DMPLEX));
 29:   PetscCall(DMSetFromOptions(*dm));
 30:   PetscCall(DMViewFromOptions(*dm, NULL, "-dm_view"));
 31:   PetscFunctionReturn(PETSC_SUCCESS);
 32: }

 34: static void volume(PetscInt dim, PetscInt Nf, PetscInt NfAux, const PetscInt uOff[], const PetscInt uOff_x[], const PetscScalar u[], const PetscScalar u_t[], const PetscScalar u_x[], const PetscInt aOff[], const PetscInt aOff_x[], const PetscScalar a[], const PetscScalar a_t[], const PetscScalar a_x[], PetscReal t, const PetscReal x[], PetscInt numConstants, const PetscScalar constants[], PetscScalar vol[])
 35: {
 36:   vol[0] = 1.;
 37: }

 39: static PetscErrorCode CreateDiscretization(DM dm, AppCtx *ctx)
 40: {
 41:   PetscDS        ds;
 42:   PetscFE        fe;
 43:   DMPolytopeType ct;
 44:   PetscInt       dim, cStart;

 46:   PetscFunctionBeginUser;
 47:   PetscCall(DMGetDimension(dm, &dim));
 48:   PetscCall(DMPlexGetHeightStratum(dm, 0, &cStart, NULL));
 49:   PetscCall(DMPlexGetCellType(dm, cStart, &ct));
 50:   PetscCall(PetscFECreateByCell(PETSC_COMM_SELF, dim, 1, ct, NULL, PETSC_DETERMINE, &fe));
 51:   PetscCall(PetscFESetName(fe, "scalar"));
 52:   PetscCall(DMAddField(dm, NULL, (PetscObject)fe));
 53:   PetscCall(PetscFEDestroy(&fe));
 54:   PetscCall(DMCreateDS(dm));
 55:   PetscCall(DMGetDS(dm, &ds));
 56:   PetscCall(PetscDSSetObjective(ds, 0, volume));
 57:   PetscFunctionReturn(PETSC_SUCCESS);
 58: }

 60: static PetscErrorCode CheckVolume(DM dm, AppCtx *ctx)
 61: {
 62:   Vec         u;
 63:   PetscScalar result;
 64:   PetscReal   vol, tol = ctx->tol;

 66:   PetscFunctionBeginUser;
 67:   PetscCall(DMGetGlobalVector(dm, &u));
 68:   PetscCall(DMPlexComputeIntegralFEM(dm, u, &result, ctx));
 69:   vol = PetscRealPart(result);
 70:   PetscCall(DMRestoreGlobalVector(dm, &u));
 71:   PetscCall(PetscPrintf(PetscObjectComm((PetscObject)dm), "Volume: %g\n", (double)vol));
 72:   PetscCheck(ctx->volume <= 0.0 || PetscAbsReal(ctx->volume - vol) <= tol, PetscObjectComm((PetscObject)dm), PETSC_ERR_PLIB, "Calculated volume %g != %g actual volume (error %g > %g tol)", (double)vol, (double)ctx->volume, (double)PetscAbsReal(ctx->volume - vol), (double)tol);
 73:   PetscFunctionReturn(PETSC_SUCCESS);
 74: }

 76: int main(int argc, char **argv)
 77: {
 78:   DM     dm;
 79:   AppCtx user;

 81:   PetscFunctionBeginUser;
 82:   PetscCall(PetscInitialize(&argc, &argv, NULL, help));
 83:   PetscCall(ProcessOptions(PETSC_COMM_WORLD, &user));
 84:   PetscCall(CreateMesh(PETSC_COMM_WORLD, &user, &dm));
 85:   PetscCall(CreateDiscretization(dm, &user));
 86:   PetscCall(CheckVolume(dm, &user));
 87:   PetscCall(DMDestroy(&dm));
 88:   PetscCall(PetscFinalize());
 89:   return 0;
 90: }

 92: /*TEST

 94:   testset:
 95:     args: -dm_plex_simplex 0 -dm_plex_box_faces 1,1 -dm_plex_box_lower -1.,-1. -dm_plex_box_upper 1.,1. -volume 4.

 97:     test:
 98:       suffix: square_0
 99:       args: -dm_coord_petscspace_degree 1

101:     test:
102:       suffix: square_1
103:       args: -dm_coord_petscspace_degree 2

105:     test:
106:       suffix: square_2
107:       args: -dm_refine 1 -dm_coord_petscspace_degree 1

109:     test:
110:       suffix: square_3
111:       args: -dm_refine 1 -dm_coord_petscspace_degree 2

113:   testset:
114:     args: -dm_plex_dim 3 -dm_plex_simplex 0 -dm_plex_box_faces 1,1,1 -dm_plex_box_lower -1.,-1.,-1. -dm_plex_box_upper 1.,1.,1. -volume 8.

116:     test:
117:       suffix: cube_0
118:       args: -dm_coord_petscspace_degree 1

120:     test:
121:       suffix: cube_1
122:       args: -dm_coord_petscspace_degree 2

124:     test:
125:       suffix: cube_2
126:       args: -dm_refine 1 -dm_coord_petscspace_degree 1

128:     test:
129:       suffix: cube_3
130:       args: -dm_refine 1 -dm_coord_petscspace_degree 2

132:   testset:
133:     args: -dm_plex_simplex 0 -dm_plex_box_faces 1,1 -dm_plex_box_lower -1.,-1. -dm_plex_box_upper 1.,1. \
134:           -volume 4. -dm_coord_remap -dm_coord_map shear -dm_coord_map_params 0.0,0.0,3.0

136:     test:
137:       suffix: shear_0
138:       args: -dm_coord_petscspace_degree 1

140:     test:
141:       suffix: shear_1
142:       args: -dm_coord_petscspace_degree 2

144:     test:
145:       suffix: shear_2
146:       args: -dm_refine 1 -dm_coord_petscspace_degree 1

148:     test:
149:       suffix: shear_3
150:       args: -dm_refine 1 -dm_coord_petscspace_degree 2

152:   testset:
153:     args: -dm_plex_dim 3 -dm_plex_simplex 0 -dm_plex_box_faces 1,1,1 -dm_plex_box_lower -1.,-1.,-1. -dm_plex_box_upper 1.,1.,1. \
154:           -volume 8. -dm_coord_remap -dm_coord_map shear -dm_coord_map_params 0.0,0.0,3.0,4.0

156:     test:
157:       suffix: shear_4
158:       args: -dm_coord_petscspace_degree 1

160:     test:
161:       suffix: shear_5
162:       args: -dm_coord_petscspace_degree 2

164:     test:
165:       suffix: shear_6
166:       args: -dm_refine 1 -dm_coord_petscspace_degree 1

168:     test:
169:       suffix: shear_7
170:       args: -dm_refine 1 -dm_coord_petscspace_degree 2

172:   testset:
173:     args: -dm_plex_simplex 0 -dm_plex_box_faces 1,1 -dm_plex_box_lower 1.,-1. -dm_plex_box_upper 3.,1. \
174:           -dm_coord_petscspace_degree 1 -volume 8. -dm_coord_remap -dm_coord_map flare

176:     test:
177:       suffix: flare_0
178:       args:

180:     test:
181:       suffix: flare_1
182:       args: -dm_refine 2

184:   testset:
185:     # Area: 3/4 \pi = 2.3562
186:     args: -dm_plex_simplex 0 -dm_plex_box_faces 1,1 -petscfe_default_quadrature_order 2 \
187:           -volume 2.35619449019235 -dm_coord_remap -dm_coord_map annulus

189:     test:
190:       # Area: (a+b)/2 h = 3/\sqrt{2} (sqrt{2} - 1/\sqrt{2}) = 3/2
191:       suffix: annulus_0
192:       requires: double
193:       args: -dm_coord_petscspace_degree 1 -volume 1.5

195:     test:
196:       suffix: annulus_1
197:       requires: double
198:       args: -dm_refine 3 -dm_coord_petscspace_degree 1 -tol .016

200:     test:
201:       suffix: annulus_2
202:       requires: double
203:       args: -dm_refine 3 -dm_coord_petscspace_degree 2 -tol .0038

205:     test:
206:       suffix: annulus_3
207:       requires: double
208:       args: -dm_refine 3 -dm_coord_petscspace_degree 3 -tol 2.2e-6

210:     test:
211:       suffix: annulus_4
212:       requires: double
213:       args: -dm_refine 2 -dm_coord_petscspace_degree 2 -tol .00012

215:     test:
216:       suffix: annulus_5
217:       requires: double
218:       args: -dm_refine 2 -dm_coord_petscspace_degree 3 -petscfe_default_quadrature_order 3 -tol 1.2e-7

220:   testset:
221:     # Volume: 4/3 \pi (8 - 1)/2 = 14/3 \pi = 14.66076571675238
222:     args: -dm_plex_dim 3 -dm_plex_simplex 0 -dm_plex_box_faces 1,1,1 -dm_plex_box_lower -1.,-1.,-1. -dm_plex_box_upper 1.,1.,1. \
223:           -volume 14.66076571675238 -dm_coord_remap -dm_coord_map shell

225:     test:
226:       suffix: shell_0
227:       requires: double
228:       args: -dm_refine 1 -dm_coord_petscspace_degree 1 -petscfe_default_quadrature_order 1 -volume 5.633164922 -tol 1.0e-7

230:     test:
231:       suffix: shell_1
232:       requires: double
233:       args: -dm_refine 2 -dm_coord_petscspace_degree 1 -petscfe_default_quadrature_order 1 -tol 3.1

235:     test:
236:       suffix: shell_2
237:       requires: double
238:       args: -dm_refine 2 -dm_coord_petscspace_degree 2 -petscfe_default_quadrature_order 2 -tol .1

240:     test:
241:       suffix: shell_3
242:       requires: double
243:       args: -dm_refine 2 -dm_coord_petscspace_degree 3 -petscfe_default_quadrature_order 3 -tol .02

245:     test:
246:       suffix: shell_4
247:       requires: double
248:       args: -dm_refine 2 -dm_coord_petscspace_degree 4 -petscfe_default_quadrature_order 4 -tol .006

250:   test:
251:     # Volume: 1.0
252:     suffix: gmsh_q2
253:     requires: double
254:     args: -dm_plex_filename ${wPETSC_DIR}/share/petsc/datafiles/meshes/quads-q2.msh -dm_plex_gmsh_project -volume 1.0 -tol 1e-6

256:   test:
257:     # Volume: 1.0
258:     suffix: gmsh_q3
259:     requires: double
260:     nsize: {{1 2}}
261:     args: -dm_plex_filename ${wPETSC_DIR}/share/petsc/datafiles/meshes/quads-q3.msh -dm_plex_gmsh_project -volume 1.0 -tol 1e-6

263:   test:
264:     # Volume: 1.0
265:     suffix: gmsh_3d_q2
266:     requires: double
267:     args: -dm_plex_filename ${wPETSC_DIR}/share/petsc/datafiles/meshes/cube_q2.msh -dm_plex_gmsh_project -volume 1.0 -tol 1e-6

269:   test:
270:     # Volume: 1.0
271:     suffix: gmsh_3d_q3
272:     requires: double
273:     nsize: {{1 2}}
274:     args: -dm_plex_filename ${wPETSC_DIR}/share/petsc/datafiles/meshes/cube_q3.msh -dm_plex_gmsh_project -volume 1.0 -tol 1e-6

276: TEST*/