xref: /petsc/src/dm/tutorials/swarm_ex2.c (revision b122ec5aa1bd4469eb4e0673542fb7de3f411254)
1c4762a1bSJed Brown 
2c4762a1bSJed Brown static char help[] = "Tests DMSwarm\n\n";
3c4762a1bSJed Brown 
4c4762a1bSJed Brown #include <petscdm.h>
5c4762a1bSJed Brown #include <petscdmda.h>
6c4762a1bSJed Brown #include <petscdmswarm.h>
7c4762a1bSJed Brown 
8c4762a1bSJed Brown /*
9c4762a1bSJed Brown  Checks for variable blocksize
10c4762a1bSJed Brown */
11c4762a1bSJed Brown PetscErrorCode ex2_1(void)
12c4762a1bSJed Brown {
13c4762a1bSJed Brown   DM             dms;
14c4762a1bSJed Brown   Vec            x;
15c4762a1bSJed Brown   PetscMPIInt    rank;
16c4762a1bSJed Brown   PetscInt       p,bs,nlocal;
17c4762a1bSJed Brown 
18362febeeSStefano Zampini   PetscFunctionBegin;
195f80ce2aSJacob Faibussowitsch   CHKERRMPI(MPI_Comm_rank(PETSC_COMM_WORLD,&rank));
20c4762a1bSJed Brown 
215f80ce2aSJacob Faibussowitsch   CHKERRQ(DMCreate(PETSC_COMM_WORLD,&dms));
225f80ce2aSJacob Faibussowitsch   CHKERRQ(DMSetType(dms,DMSWARM));
235f80ce2aSJacob Faibussowitsch   CHKERRQ(DMSwarmInitializeFieldRegister(dms));
245f80ce2aSJacob Faibussowitsch   CHKERRQ(DMSwarmRegisterPetscDatatypeField(dms,"viscosity",1,PETSC_REAL));
255f80ce2aSJacob Faibussowitsch   CHKERRQ(DMSwarmRegisterPetscDatatypeField(dms,"strain",3,PETSC_REAL));
265f80ce2aSJacob Faibussowitsch   CHKERRQ(DMSwarmFinalizeFieldRegister(dms));
275f80ce2aSJacob Faibussowitsch   CHKERRQ(DMSwarmSetLocalSizes(dms,5+rank,4));
285f80ce2aSJacob Faibussowitsch   CHKERRQ(DMView(dms,PETSC_VIEWER_STDOUT_WORLD));
295f80ce2aSJacob Faibussowitsch   CHKERRQ(DMSwarmGetLocalSize(dms,&nlocal));
30c4762a1bSJed Brown 
31c4762a1bSJed Brown   {
32c4762a1bSJed Brown     PetscReal *array;
335f80ce2aSJacob Faibussowitsch     CHKERRQ(DMSwarmGetField(dms,"viscosity",&bs,NULL,(void**)&array));
34c4762a1bSJed Brown     for (p=0; p<nlocal; p++) {
35c4762a1bSJed Brown       array[p] = 11.1 + p*0.1 + rank*100.0;
36c4762a1bSJed Brown     }
375f80ce2aSJacob Faibussowitsch     CHKERRQ(DMSwarmRestoreField(dms,"viscosity",&bs,NULL,(void**)&array));
38c4762a1bSJed Brown   }
39c4762a1bSJed Brown 
40c4762a1bSJed Brown   {
41c4762a1bSJed Brown     PetscReal *array;
425f80ce2aSJacob Faibussowitsch     CHKERRQ(DMSwarmGetField(dms,"strain",&bs,NULL,(void**)&array));
43c4762a1bSJed Brown     for (p=0; p<nlocal; p++) {
44c4762a1bSJed Brown       array[bs*p+0] = 2.0e-2 + p*0.001 + rank*1.0;
45c4762a1bSJed Brown       array[bs*p+1] = 2.0e-2 + p*0.002 + rank*1.0;
46c4762a1bSJed Brown       array[bs*p+2] = 2.0e-2 + p*0.003 + rank*1.0;
47c4762a1bSJed Brown     }
485f80ce2aSJacob Faibussowitsch     CHKERRQ(DMSwarmRestoreField(dms,"strain",&bs,NULL,(void**)&array));
49c4762a1bSJed Brown   }
50c4762a1bSJed Brown 
515f80ce2aSJacob Faibussowitsch   CHKERRQ(DMSwarmCreateGlobalVectorFromField(dms,"viscosity",&x));
525f80ce2aSJacob Faibussowitsch   CHKERRQ(VecView(x,PETSC_VIEWER_STDOUT_WORLD));
535f80ce2aSJacob Faibussowitsch   CHKERRQ(DMSwarmDestroyGlobalVectorFromField(dms,"viscosity",&x));
54c4762a1bSJed Brown 
555f80ce2aSJacob Faibussowitsch   CHKERRQ(DMSwarmCreateGlobalVectorFromField(dms,"strain",&x));
565f80ce2aSJacob Faibussowitsch   CHKERRQ(VecView(x,PETSC_VIEWER_STDOUT_WORLD));
575f80ce2aSJacob Faibussowitsch   CHKERRQ(DMSwarmDestroyGlobalVectorFromField(dms,"strain",&x));
58c4762a1bSJed Brown 
595f80ce2aSJacob Faibussowitsch   CHKERRQ(DMSwarmVectorDefineField(dms,"strain"));
605f80ce2aSJacob Faibussowitsch   CHKERRQ(DMCreateGlobalVector(dms,&x));
615f80ce2aSJacob Faibussowitsch   CHKERRQ(VecView(x,PETSC_VIEWER_STDOUT_WORLD));
625f80ce2aSJacob Faibussowitsch   CHKERRQ(VecDestroy(&x));
635f80ce2aSJacob Faibussowitsch   CHKERRQ(DMDestroy(&dms));
64c4762a1bSJed Brown   PetscFunctionReturn(0);
65c4762a1bSJed Brown }
66c4762a1bSJed Brown 
67c4762a1bSJed Brown int main(int argc,char **argv)
68c4762a1bSJed Brown {
69c4762a1bSJed Brown 
70*b122ec5aSJacob Faibussowitsch   CHKERRQ(PetscInitialize(&argc,&argv,(char*)0,help));
715f80ce2aSJacob Faibussowitsch   CHKERRQ(ex2_1());
72*b122ec5aSJacob Faibussowitsch   CHKERRQ(PetscFinalize());
73*b122ec5aSJacob Faibussowitsch   return 0;
74c4762a1bSJed Brown }
75c4762a1bSJed Brown 
76c4762a1bSJed Brown /*TEST
77c4762a1bSJed Brown 
78c4762a1bSJed Brown    test:
79c4762a1bSJed Brown       requires: !complex double
80c4762a1bSJed Brown       nsize: 3
81c4762a1bSJed Brown       filter: grep -v atomic
82c4762a1bSJed Brown       filter_output: grep -v atomic
83c4762a1bSJed Brown 
84c4762a1bSJed Brown TEST*/
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